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Symbol = require('./_Symbol');\n\n/** Used for built-in method references. */\nvar objectProto = Object.prototype;\n\n/** Used to check objects for own properties. */\nvar hasOwnProperty = objectProto.hasOwnProperty;\n\n/**\n * Used to resolve the\n * [`toStringTag`](http://ecma-international.org/ecma-262/7.0/#sec-object.prototype.tostring)\n * of values.\n */\nvar nativeObjectToString = objectProto.toString;\n\n/** Built-in value references. */\nvar symToStringTag = Symbol ? Symbol.toStringTag : undefined;\n\n/**\n * A specialized version of `baseGetTag` which ignores `Symbol.toStringTag` values.\n *\n * @private\n * @param {*} value The value to query.\n * @returns {string} Returns the raw `toStringTag`.\n */\nfunction getRawTag(value) {\n  var isOwn = hasOwnProperty.call(value, symToStringTag),\n      tag = value[symToStringTag];\n\n  try {\n    value[symToStringTag] = undefined;\n    var unmasked = true;\n  } catch (e) {}\n\n  var result = nativeObjectToString.call(value);\n  if (unmasked) {\n    if (isOwn) {\n      value[symToStringTag] = tag;\n    } else {\n      delete value[symToStringTag];\n    }\n  }\n  return result;\n}\n\nmodule.exports = getRawTag;\n","export const EPUBJS_VERSION = \"0.3\";\n\n// Dom events to listen for\nexport const DOM_EVENTS = [\"keydown\", \"keyup\", \"keypressed\", \"mouseup\", \"mousedown\", \"mousemove\", \"click\", \"touchend\", \"touchstart\", \"touchmove\"];\n\nexport const EVENTS = {\n  BOOK : {\n    OPEN_FAILED : \"openFailed\"\n  },\n  CONTENTS : {\n    EXPAND : \"expand\",\n    RESIZE : \"resize\",\n    SELECTED : \"selected\",\n    SELECTED_RANGE : \"selectedRange\",\n    LINK_CLICKED : \"linkClicked\"\n  },\n  LOCATIONS : {\n    CHANGED : \"changed\"\n  },\n  MANAGERS : {\n    RESIZE : \"resize\",\n    RESIZED : \"resized\",\n    ORIENTATION_CHANGE : \"orientationchange\",\n    ADDED : \"added\",\n    SCROLL : \"scroll\",\n    SCROLLED : \"scrolled\",\n    REMOVED : \"removed\",\n  },\n  VIEWS : {\n    AXIS: \"axis\",\n    WRITING_MODE: \"writingMode\",\n    LOAD_ERROR : \"loaderror\",\n    RENDERED : \"rendered\",\n    RESIZED : \"resized\",\n    DISPLAYED : \"displayed\",\n    SHOWN : \"shown\",\n    HIDDEN : \"hidden\",\n    MARK_CLICKED : \"markClicked\"\n  },\n  RENDITION : {\n    STARTED : \"started\",\n    ATTACHED : \"attached\",\n    DISPLAYED : \"displayed\",\n    DISPLAY_ERROR : \"displayerror\",\n    RENDERED : \"rendered\",\n    REMOVED : \"removed\",\n    RESIZED : \"resized\",\n    ORIENTATION_CHANGE : \"orientationchange\",\n    LOCATION_CHANGED : \"locationChanged\",\n    RELOCATED : \"relocated\",\n    MARK_CLICKED : \"markClicked\",\n    SELECTED : \"selected\",\n    LAYOUT: \"layout\"\n  },\n  LAYOUT : {\n    UPDATED : \"updated\"\n  },\n  ANNOTATION : {\n    ATTACH : \"attach\",\n    DETACH : \"detach\"\n  }\n}\n","/**\n * Core Utilities and Helpers\n * @module Core\n*/\nimport { DOMParser as XMLDOMParser } from \"@xmldom/xmldom\";\n\n/**\n * Vendor prefixed requestAnimationFrame\n * @returns {function} requestAnimationFrame\n * @memberof Core\n */\nexport const requestAnimationFrame = (typeof window != \"undefined\") ? (window.requestAnimationFrame || window.mozRequestAnimationFrame || window.webkitRequestAnimationFrame || window.msRequestAnimationFrame) : false;\nconst ELEMENT_NODE = 1;\nconst TEXT_NODE = 3;\nconst COMMENT_NODE = 8;\nconst DOCUMENT_NODE = 9;\nconst _URL = typeof URL != \"undefined\" ? URL : (typeof window != \"undefined\" ? (window.URL || window.webkitURL || window.mozURL) : undefined);\n\n/**\n * Generates a UUID\n * based on: http://stackoverflow.com/questions/105034/how-to-create-a-guid-uuid-in-javascript\n * @returns {string} uuid\n * @memberof Core\n */\nexport function uuid() {\n\tvar d = new Date().getTime();\n\tvar uuid = \"xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx\".replace(/[xy]/g, function(c) {\n\t\tvar r = (d + Math.random()*16)%16 | 0;\n\t\td = Math.floor(d/16);\n\t\treturn (c==\"x\" ? r : (r&0x7|0x8)).toString(16);\n\t});\n\treturn uuid;\n}\n\n/**\n * Gets the height of a document\n * @returns {number} height\n * @memberof Core\n */\nexport function documentHeight() {\n\treturn Math.max(\n\t\t\tdocument.documentElement.clientHeight,\n\t\t\tdocument.body.scrollHeight,\n\t\t\tdocument.documentElement.scrollHeight,\n\t\t\tdocument.body.offsetHeight,\n\t\t\tdocument.documentElement.offsetHeight\n\t);\n}\n\n/**\n * Checks if a node is an element\n * @param {object} obj\n * @returns {boolean}\n * @memberof Core\n */\nexport function isElement(obj) {\n\treturn !!(obj && obj.nodeType == 1);\n}\n\n/**\n * @param {any} n\n * @returns {boolean}\n * @memberof Core\n */\nexport function isNumber(n) {\n\treturn !isNaN(parseFloat(n)) && isFinite(n);\n}\n\n/**\n * @param {any} n\n * @returns {boolean}\n * @memberof Core\n */\nexport function isFloat(n) {\n\tlet f = parseFloat(n);\n\n\tif (isNumber(n) === false) {\n\t\treturn false;\n\t}\n\n\tif (typeof n === \"string\" && n.indexOf(\".\") > -1) {\n\t\treturn true;\n\t}\n\n\treturn Math.floor(f) !== f;\n}\n\n/**\n * Get a prefixed css property\n * @param {string} unprefixed\n * @returns {string}\n * @memberof Core\n */\nexport function prefixed(unprefixed) {\n\tvar vendors = [\"Webkit\", \"webkit\", \"Moz\", \"O\", \"ms\" ];\n\tvar prefixes = [\"-webkit-\", \"-webkit-\", \"-moz-\", \"-o-\", \"-ms-\"];\n\tvar lower = unprefixed.toLowerCase();\n\tvar length = vendors.length;\n\n\tif (typeof(document) === \"undefined\" || typeof(document.body.style[lower]) != \"undefined\") {\n\t\treturn unprefixed;\n\t}\n\n\tfor (var i = 0; i < length; i++) {\n\t\tif (typeof(document.body.style[prefixes[i] + lower]) != \"undefined\") {\n\t\t\treturn prefixes[i] + lower;\n\t\t}\n\t}\n\n\treturn unprefixed;\n}\n\n/**\n * Apply defaults to an object\n * @param {object} obj\n * @returns {object}\n * @memberof Core\n */\nexport function defaults(obj) {\n\tfor (var i = 1, length = arguments.length; i < length; i++) {\n\t\tvar source = arguments[i];\n\t\tfor (var prop in source) {\n\t\t\tif (obj[prop] === void 0) obj[prop] = source[prop];\n\t\t}\n\t}\n\treturn obj;\n}\n\n/**\n * Extend properties of an object\n * @param {object} target\n * @returns {object}\n * @memberof Core\n */\nexport function extend(target) {\n\tvar sources = [].slice.call(arguments, 1);\n\tsources.forEach(function (source) {\n\t\tif(!source) return;\n\t\tObject.getOwnPropertyNames(source).forEach(function(propName) {\n\t\t\tObject.defineProperty(target, propName, Object.getOwnPropertyDescriptor(source, propName));\n\t\t});\n\t});\n\treturn target;\n}\n\n/**\n * Fast quicksort insert for sorted array -- based on:\n *  http://stackoverflow.com/questions/1344500/efficient-way-to-insert-a-number-into-a-sorted-array-of-numbers\n * @param {any} item\n * @param {array} array\n * @param {function} [compareFunction]\n * @returns {number} location (in array)\n * @memberof Core\n */\nexport function insert(item, array, compareFunction) {\n\tvar location = locationOf(item, array, compareFunction);\n\tarray.splice(location, 0, item);\n\n\treturn location;\n}\n\n/**\n * Finds where something would fit into a sorted array\n * @param {any} item\n * @param {array} array\n * @param {function} [compareFunction]\n * @param {function} [_start]\n * @param {function} [_end]\n * @returns {number} location (in array)\n * @memberof Core\n */\nexport function locationOf(item, array, compareFunction, _start, _end) {\n\tvar start = _start || 0;\n\tvar end = _end || array.length;\n\tvar pivot = parseInt(start + (end - start) / 2);\n\tvar compared;\n\tif(!compareFunction){\n\t\tcompareFunction = function(a, b) {\n\t\t\tif(a > b) return 1;\n\t\t\tif(a < b) return -1;\n\t\t\tif(a == b) return 0;\n\t\t};\n\t}\n\tif(end-start <= 0) {\n\t\treturn pivot;\n\t}\n\n\tcompared = compareFunction(array[pivot], item);\n\tif(end-start === 1) {\n\t\treturn compared >= 0 ? pivot : pivot + 1;\n\t}\n\tif(compared === 0) {\n\t\treturn pivot;\n\t}\n\tif(compared === -1) {\n\t\treturn locationOf(item, array, compareFunction, pivot, end);\n\t} else{\n\t\treturn locationOf(item, array, compareFunction, start, pivot);\n\t}\n}\n\n/**\n * Finds index of something in a sorted array\n * Returns -1 if not found\n * @param {any} item\n * @param {array} array\n * @param {function} [compareFunction]\n * @param {function} [_start]\n * @param {function} [_end]\n * @returns {number} index (in array) or -1\n * @memberof Core\n */\nexport function indexOfSorted(item, array, compareFunction, _start, _end) {\n\tvar start = _start || 0;\n\tvar end = _end || array.length;\n\tvar pivot = parseInt(start + (end - start) / 2);\n\tvar compared;\n\tif(!compareFunction){\n\t\tcompareFunction = function(a, b) {\n\t\t\tif(a > b) return 1;\n\t\t\tif(a < b) return -1;\n\t\t\tif(a == b) return 0;\n\t\t};\n\t}\n\tif(end-start <= 0) {\n\t\treturn -1; // Not found\n\t}\n\n\tcompared = compareFunction(array[pivot], item);\n\tif(end-start === 1) {\n\t\treturn compared === 0 ? pivot : -1;\n\t}\n\tif(compared === 0) {\n\t\treturn pivot; // Found\n\t}\n\tif(compared === -1) {\n\t\treturn indexOfSorted(item, array, compareFunction, pivot, end);\n\t} else{\n\t\treturn indexOfSorted(item, array, compareFunction, start, pivot);\n\t}\n}\n/**\n * Find the bounds of an element\n * taking padding and margin into account\n * @param {element} el\n * @returns {{ width: Number, height: Number}}\n * @memberof Core\n */\nexport function bounds(el) {\n\n\tvar style = window.getComputedStyle(el);\n\tvar widthProps = [\"width\", \"paddingRight\", \"paddingLeft\", \"marginRight\", \"marginLeft\", \"borderRightWidth\", \"borderLeftWidth\"];\n\tvar heightProps = [\"height\", \"paddingTop\", \"paddingBottom\", \"marginTop\", \"marginBottom\", \"borderTopWidth\", \"borderBottomWidth\"];\n\n\tvar width = 0;\n\tvar height = 0;\n\n\twidthProps.forEach(function(prop){\n\t\twidth += parseFloat(style[prop]) || 0;\n\t});\n\n\theightProps.forEach(function(prop){\n\t\theight += parseFloat(style[prop]) || 0;\n\t});\n\n\treturn {\n\t\theight: height,\n\t\twidth: width\n\t};\n\n}\n\n/**\n * Find the bounds of an element\n * taking padding, margin and borders into account\n * @param {element} el\n * @returns {{ width: Number, height: Number}}\n * @memberof Core\n */\nexport function borders(el) {\n\n\tvar style = window.getComputedStyle(el);\n\tvar widthProps = [\"paddingRight\", \"paddingLeft\", \"marginRight\", \"marginLeft\", \"borderRightWidth\", \"borderLeftWidth\"];\n\tvar heightProps = [\"paddingTop\", \"paddingBottom\", \"marginTop\", \"marginBottom\", \"borderTopWidth\", \"borderBottomWidth\"];\n\n\tvar width = 0;\n\tvar height = 0;\n\n\twidthProps.forEach(function(prop){\n\t\twidth += parseFloat(style[prop]) || 0;\n\t});\n\n\theightProps.forEach(function(prop){\n\t\theight += parseFloat(style[prop]) || 0;\n\t});\n\n\treturn {\n\t\theight: height,\n\t\twidth: width\n\t};\n\n}\n\n/**\n * Find the bounds of any node\n * allows for getting bounds of text nodes by wrapping them in a range\n * @param {node} node\n * @returns {BoundingClientRect}\n * @memberof Core\n */\nexport function nodeBounds(node) {\n\tlet elPos;\n\tlet doc = node.ownerDocument;\n\tif(node.nodeType == Node.TEXT_NODE){\n\t\tlet elRange = doc.createRange();\n\t\telRange.selectNodeContents(node);\n\t\telPos = elRange.getBoundingClientRect();\n\t} else {\n\t\telPos = node.getBoundingClientRect();\n\t}\n\treturn elPos;\n}\n\n/**\n * Find the equivalent of getBoundingClientRect of a browser window\n * @returns {{ width: Number, height: Number, top: Number, left: Number, right: Number, bottom: Number }}\n * @memberof Core\n */\nexport function windowBounds() {\n\n\tvar width = window.innerWidth;\n\tvar height = window.innerHeight;\n\n\treturn {\n\t\ttop: 0,\n\t\tleft: 0,\n\t\tright: width,\n\t\tbottom: height,\n\t\twidth: width,\n\t\theight: height\n\t};\n\n}\n\n/**\n * Gets the index of a node in its parent\n * @param {Node} node\n * @param {string} typeId\n * @return {number} index\n * @memberof Core\n */\nexport function indexOfNode(node, typeId) {\n\tvar parent = node.parentNode;\n\tvar children = parent.childNodes;\n\tvar sib;\n\tvar index = -1;\n\tfor (var i = 0; i < children.length; i++) {\n\t\tsib = children[i];\n\t\tif (sib.nodeType === typeId) {\n\t\t\tindex++;\n\t\t}\n\t\tif (sib == node) break;\n\t}\n\n\treturn index;\n}\n\n/**\n * Gets the index of a text node in its parent\n * @param {node} textNode\n * @returns {number} index\n * @memberof Core\n */\nexport function indexOfTextNode(textNode) {\n\treturn indexOfNode(textNode, TEXT_NODE);\n}\n\n/**\n * Gets the index of an element node in its parent\n * @param {element} elementNode\n * @returns {number} index\n * @memberof Core\n */\nexport function indexOfElementNode(elementNode) {\n\treturn indexOfNode(elementNode, ELEMENT_NODE);\n}\n\n/**\n * Check if extension is xml\n * @param {string} ext\n * @returns {boolean}\n * @memberof Core\n */\nexport function isXml(ext) {\n\treturn [\"xml\", \"opf\", \"ncx\"].indexOf(ext) > -1;\n}\n\n/**\n * Create a new blob\n * @param {any} content\n * @param {string} mime\n * @returns {Blob}\n * @memberof Core\n */\nexport function createBlob(content, mime){\n\treturn new Blob([content], {type : mime });\n}\n\n/**\n * Create a new blob url\n * @param {any} content\n * @param {string} mime\n * @returns {string} url\n * @memberof Core\n */\nexport function createBlobUrl(content, mime){\n\tvar tempUrl;\n\tvar blob = createBlob(content, mime);\n\n\ttempUrl = _URL.createObjectURL(blob);\n\n\treturn tempUrl;\n}\n\n/**\n * Remove a blob url\n * @param {string} url\n * @memberof Core\n */\nexport function revokeBlobUrl(url){\n\treturn _URL.revokeObjectURL(url);\n}\n\n/**\n * Create a new base64 encoded url\n * @param {any} content\n * @param {string} mime\n * @returns {string} url\n * @memberof Core\n */\nexport function createBase64Url(content, mime){\n\tvar data;\n\tvar datauri;\n\n\tif (typeof(content) !== \"string\") {\n\t\t// Only handles strings\n\t\treturn;\n\t}\n\n\tdata = btoa(content);\n\n\tdatauri = \"data:\" + mime + \";base64,\" + data;\n\n\treturn datauri;\n}\n\n/**\n * Get type of an object\n * @param {object} obj\n * @returns {string} type\n * @memberof Core\n */\nexport function type(obj){\n\treturn Object.prototype.toString.call(obj).slice(8, -1);\n}\n\n/**\n * Parse xml (or html) markup\n * @param {string} markup\n * @param {string} mime\n * @param {boolean} forceXMLDom force using xmlDom to parse instead of native parser\n * @returns {document} document\n * @memberof Core\n */\nexport function parse(markup, mime, forceXMLDom) {\n\tvar doc;\n\tvar Parser;\n\n\tif (typeof DOMParser === \"undefined\" || forceXMLDom) {\n\t\tParser = XMLDOMParser;\n\t} else {\n\t\tParser = DOMParser;\n\t}\n\n\t// Remove byte order mark before parsing\n\t// https://www.w3.org/International/questions/qa-byte-order-mark\n\tif(markup.charCodeAt(0) === 0xFEFF) {\n\t\tmarkup = markup.slice(1);\n\t}\n\n\tdoc = new Parser().parseFromString(markup, mime);\n\n\treturn doc;\n}\n\n/**\n * querySelector polyfill\n * @param {element} el\n * @param {string} sel selector string\n * @returns {element} element\n * @memberof Core\n */\nexport function qs(el, sel) {\n\tvar elements;\n\tif (!el) {\n\t\tthrow new Error(\"No Element Provided\");\n\t}\n\n\tif (typeof el.querySelector != \"undefined\") {\n\t\treturn el.querySelector(sel);\n\t} else {\n\t\telements = el.getElementsByTagName(sel);\n\t\tif (elements.length) {\n\t\t\treturn elements[0];\n\t\t}\n\t}\n}\n\n/**\n * querySelectorAll polyfill\n * @param {element} el\n * @param {string} sel selector string\n * @returns {element[]} elements\n * @memberof Core\n */\nexport function qsa(el, sel) {\n\n\tif (typeof el.querySelector != \"undefined\") {\n\t\treturn el.querySelectorAll(sel);\n\t} else {\n\t\treturn el.getElementsByTagName(sel);\n\t}\n}\n\n/**\n * querySelector by property\n * @param {element} el\n * @param {string} sel selector string\n * @param {object[]} props\n * @returns {element[]} elements\n * @memberof Core\n */\nexport function qsp(el, sel, props) {\n\tvar q, filtered;\n\tif (typeof el.querySelector != \"undefined\") {\n\t\tsel += \"[\";\n\t\tfor (var prop in props) {\n\t\t\tsel += prop + \"~='\" + props[prop] + \"'\";\n\t\t}\n\t\tsel += \"]\";\n\t\treturn el.querySelector(sel);\n\t} else {\n\t\tq = el.getElementsByTagName(sel);\n\t\tfiltered = Array.prototype.slice.call(q, 0).filter(function(el) {\n\t\t\tfor (var prop in props) {\n\t\t\t\tif(el.getAttribute(prop) === props[prop]){\n\t\t\t\t\treturn true;\n\t\t\t\t}\n\t\t\t}\n\t\t\treturn false;\n\t\t});\n\n\t\tif (filtered) {\n\t\t\treturn filtered[0];\n\t\t}\n\t}\n}\n\n/**\n * Sprint through all text nodes in a document\n * @memberof Core\n * @param  {element} root element to start with\n * @param  {function} func function to run on each element\n */\nexport function sprint(root, func) {\n\tvar doc = root.ownerDocument || root;\n\tif (typeof(doc.createTreeWalker) !== \"undefined\") {\n\t\ttreeWalker(root, func, NodeFilter.SHOW_TEXT);\n\t} else {\n\t\twalk(root, function(node) {\n\t\t\tif (node && node.nodeType === 3) { // Node.TEXT_NODE\n\t\t\t\tfunc(node);\n\t\t\t}\n\t\t}, true);\n\t}\n}\n\n/**\n * Create a treeWalker\n * @memberof Core\n * @param  {element} root element to start with\n * @param  {function} func function to run on each element\n * @param  {function | object} filter function or object to filter with\n */\nexport function treeWalker(root, func, filter) {\n\tvar treeWalker = document.createTreeWalker(root, filter, null, false);\n\tlet node;\n\twhile ((node = treeWalker.nextNode())) {\n\t\tfunc(node);\n\t}\n}\n\n/**\n * @memberof Core\n * @param {node} node\n * @param {callback} return false for continue,true for break inside callback\n */\nexport function walk(node,callback){\n\tif(callback(node)){\n\t\treturn true;\n\t}\n\tnode = node.firstChild;\n\tif(node){\n\t\tdo{\n\t\t\tlet walked = walk(node,callback);\n\t\t\tif(walked){\n\t\t\t\treturn true;\n\t\t\t}\n\t\t\tnode = node.nextSibling;\n\t\t} while(node);\n\t}\n}\n\n/**\n * Convert a blob to a base64 encoded string\n * @param {Blog} blob\n * @returns {string}\n * @memberof Core\n */\nexport function blob2base64(blob) {\n\treturn new Promise(function(resolve, reject) {\n\t\tvar reader = new FileReader();\n\t\treader.readAsDataURL(blob);\n\t\treader.onloadend = function() {\n\t\t\tresolve(reader.result);\n\t\t};\n\t});\n}\n\n\n/**\n * Creates a new pending promise and provides methods to resolve or reject it.\n * From: https://developer.mozilla.org/en-US/docs/Mozilla/JavaScript_code_modules/Promise.jsm/Deferred#backwards_forwards_compatible\n * @memberof Core\n */\nexport function defer() {\n\t/* A method to resolve the associated Promise with the value passed.\n\t * If the promise is already settled it does nothing.\n\t *\n\t * @param {anything} value : This value is used to resolve the promise\n\t * If the value is a Promise then the associated promise assumes the state\n\t * of Promise passed as value.\n\t */\n\tthis.resolve = null;\n\n\t/* A method to reject the associated Promise with the value passed.\n\t * If the promise is already settled it does nothing.\n\t *\n\t * @param {anything} reason: The reason for the rejection of the Promise.\n\t * Generally its an Error object. If however a Promise is passed, then the Promise\n\t * itself will be the reason for rejection no matter the state of the Promise.\n\t */\n\tthis.reject = null;\n\n\tthis.id = uuid();\n\n\t/* A newly created Pomise object.\n\t * Initially in pending state.\n\t */\n\tthis.promise = new Promise((resolve, reject) => {\n\t\tthis.resolve = resolve;\n\t\tthis.reject = reject;\n\t});\n\tObject.freeze(this);\n}\n\n/**\n * querySelector with filter by epub type\n * @param {element} html\n * @param {string} element element type to find\n * @param {string} type epub type to find\n * @returns {element[]} elements\n * @memberof Core\n */\nexport function querySelectorByType(html, element, type){\n\tvar query;\n\tif (typeof html.querySelector != \"undefined\") {\n\t\tquery = html.querySelector(`${element}[*|type=\"${type}\"]`);\n\t}\n\t// Handle IE not supporting namespaced epub:type in querySelector\n\tif(!query || query.length === 0) {\n\t\tquery = qsa(html, element);\n\t\tfor (var i = 0; i < query.length; i++) {\n\t\t\tif(query[i].getAttributeNS(\"http://www.idpf.org/2007/ops\", \"type\") === type ||\n\t\t\t\t query[i].getAttribute(\"epub:type\") === type) {\n\t\t\t\treturn query[i];\n\t\t\t}\n\t\t}\n\t} else {\n\t\treturn query;\n\t}\n}\n\n/**\n * Find direct descendents of an element\n * @param {element} el\n * @returns {element[]} children\n * @memberof Core\n */\nexport function findChildren(el) {\n\tvar result = [];\n\tvar childNodes = el.childNodes;\n\tfor (var i = 0; i < childNodes.length; i++) {\n\t\tlet node = childNodes[i];\n\t\tif (node.nodeType === 1) {\n\t\t\tresult.push(node);\n\t\t}\n\t}\n\treturn result;\n}\n\n/**\n * Find all parents (ancestors) of an element\n * @param {element} node\n * @returns {element[]} parents\n * @memberof Core\n */\nexport function parents(node) {\n\tvar nodes = [node];\n\tfor (; node; node = node.parentNode) {\n\t\tnodes.unshift(node);\n\t}\n\treturn nodes\n}\n\n/**\n * Find all direct descendents of a specific type\n * @param {element} el\n * @param {string} nodeName\n * @param {boolean} [single]\n * @returns {element[]} children\n * @memberof Core\n */\nexport function filterChildren(el, nodeName, single) {\n\tvar result = [];\n\tvar childNodes = el.childNodes;\n\tfor (var i = 0; i < childNodes.length; i++) {\n\t\tlet node = childNodes[i];\n\t\tif (node.nodeType === 1 && node.nodeName.toLowerCase() === nodeName) {\n\t\t\tif (single) {\n\t\t\t\treturn node;\n\t\t\t} else {\n\t\t\t\tresult.push(node);\n\t\t\t}\n\t\t}\n\t}\n\tif (!single) {\n\t\treturn result;\n\t}\n}\n\n/**\n * Filter all parents (ancestors) with tag name\n * @param {element} node\n * @param {string} tagname\n * @returns {element[]} parents\n * @memberof Core\n */\nexport function getParentByTagName(node, tagname) {\n\tlet parent;\n\tif (node === null || tagname === '') return;\n\tparent = node.parentNode;\n\twhile (parent.nodeType === 1) {\n\t\tif (parent.tagName.toLowerCase() === tagname) {\n\t\t\treturn parent;\n\t\t}\n\t\tparent = parent.parentNode;\n\t}\n}\n\n/**\n * Lightweight Polyfill for DOM Range\n * @class\n * @memberof Core\n */\nexport class RangeObject {\n\tconstructor() {\n\t\tthis.collapsed = false;\n\t\tthis.commonAncestorContainer = undefined;\n\t\tthis.endContainer = undefined;\n\t\tthis.endOffset = undefined;\n\t\tthis.startContainer = undefined;\n\t\tthis.startOffset = undefined;\n\t}\n\n\tsetStart(startNode, startOffset) {\n\t\tthis.startContainer = startNode;\n\t\tthis.startOffset = startOffset;\n\n\t\tif (!this.endContainer) {\n\t\t\tthis.collapse(true);\n\t\t} else {\n\t\t\tthis.commonAncestorContainer = this._commonAncestorContainer();\n\t\t}\n\n\t\tthis._checkCollapsed();\n\t}\n\n\tsetEnd(endNode, endOffset) {\n\t\tthis.endContainer = endNode;\n\t\tthis.endOffset = endOffset;\n\n\t\tif (!this.startContainer) {\n\t\t\tthis.collapse(false);\n\t\t} else {\n\t\t\tthis.collapsed = false;\n\t\t\tthis.commonAncestorContainer = this._commonAncestorContainer();\n\t\t}\n\n\t\tthis._checkCollapsed();\n\t}\n\n\tcollapse(toStart) {\n\t\tthis.collapsed = true;\n\t\tif (toStart) {\n\t\t\tthis.endContainer = this.startContainer;\n\t\t\tthis.endOffset = this.startOffset;\n\t\t\tthis.commonAncestorContainer = this.startContainer.parentNode;\n\t\t} else {\n\t\t\tthis.startContainer = this.endContainer;\n\t\t\tthis.startOffset = this.endOffset;\n\t\t\tthis.commonAncestorContainer = this.endOffset.parentNode;\n\t\t}\n\t}\n\n\tselectNode(referenceNode) {\n\t\tlet parent = referenceNode.parentNode;\n\t\tlet index = Array.prototype.indexOf.call(parent.childNodes, referenceNode);\n\t\tthis.setStart(parent, index);\n\t\tthis.setEnd(parent, index + 1);\n\t}\n\n\tselectNodeContents(referenceNode) {\n\t\tlet end = referenceNode.childNodes[referenceNode.childNodes - 1];\n\t\tlet endIndex = (referenceNode.nodeType === 3) ?\n\t\t\t\treferenceNode.textContent.length : parent.childNodes.length;\n\t\tthis.setStart(referenceNode, 0);\n\t\tthis.setEnd(referenceNode, endIndex);\n\t}\n\n\t_commonAncestorContainer(startContainer, endContainer) {\n\t\tvar startParents = parents(startContainer || this.startContainer);\n\t\tvar endParents = parents(endContainer || this.endContainer);\n\n\t\tif (startParents[0] != endParents[0]) return undefined;\n\n\t\tfor (var i = 0; i < startParents.length; i++) {\n\t\t\tif (startParents[i] != endParents[i]) {\n\t\t\t\treturn startParents[i - 1];\n\t\t\t}\n\t\t}\n\t}\n\n\t_checkCollapsed() {\n\t\tif (this.startContainer === this.endContainer &&\n\t\t\t\tthis.startOffset === this.endOffset) {\n\t\t\tthis.collapsed = true;\n\t\t} else {\n\t\t\tthis.collapsed = false;\n\t\t}\n\t}\n\n\ttoString() {\n\t\t// TODO: implement walking between start and end to find text\n\t}\n}\n","var debounce = require('./debounce'),\n    isObject = require('./isObject');\n\n/** Error message constants. */\nvar FUNC_ERROR_TEXT = 'Expected a function';\n\n/**\n * Creates a throttled function that only invokes `func` at most once per\n * every `wait` milliseconds. The throttled function comes with a `cancel`\n * method to cancel delayed `func` invocations and a `flush` method to\n * immediately invoke them. Provide `options` to indicate whether `func`\n * should be invoked on the leading and/or trailing edge of the `wait`\n * timeout. The `func` is invoked with the last arguments provided to the\n * throttled function. Subsequent calls to the throttled function return the\n * result of the last `func` invocation.\n *\n * **Note:** If `leading` and `trailing` options are `true`, `func` is\n * invoked on the trailing edge of the timeout only if the throttled function\n * is invoked more than once during the `wait` timeout.\n *\n * If `wait` is `0` and `leading` is `false`, `func` invocation is deferred\n * until to the next tick, similar to `setTimeout` with a timeout of `0`.\n *\n * See [David Corbacho's article](https://css-tricks.com/debouncing-throttling-explained-examples/)\n * for details over the differences between `_.throttle` and `_.debounce`.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Function\n * @param {Function} func The function to throttle.\n * @param {number} [wait=0] The number of milliseconds to throttle invocations to.\n * @param {Object} [options={}] The options object.\n * @param {boolean} [options.leading=true]\n *  Specify invoking on the leading edge of the timeout.\n * @param {boolean} [options.trailing=true]\n *  Specify invoking on the trailing edge of the timeout.\n * @returns {Function} Returns the new throttled function.\n * @example\n *\n * // Avoid excessively updating the position while scrolling.\n * jQuery(window).on('scroll', _.throttle(updatePosition, 100));\n *\n * // Invoke `renewToken` when the click event is fired, but not more than once every 5 minutes.\n * var throttled = _.throttle(renewToken, 300000, { 'trailing': false });\n * jQuery(element).on('click', throttled);\n *\n * // Cancel the trailing throttled invocation.\n * jQuery(window).on('popstate', throttled.cancel);\n */\nfunction throttle(func, wait, options) {\n  var leading = true,\n      trailing = true;\n\n  if (typeof func != 'function') {\n    throw new TypeError(FUNC_ERROR_TEXT);\n  }\n  if (isObject(options)) {\n    leading = 'leading' in options ? !!options.leading : leading;\n    trailing = 'trailing' in options ? !!options.trailing : trailing;\n  }\n  return debounce(func, wait, {\n    'leading': leading,\n    'maxWait': wait,\n    'trailing': trailing\n  });\n}\n\nmodule.exports = throttle;\n","import Path from \"./path\";\nimport path from \"path-webpack\";\n\n/**\n * creates a Url object for parsing and manipulation of a url string\n * @param\t{string} urlString\ta url string (relative or absolute)\n * @param\t{string} [baseString] optional base for the url,\n * default to window.location.href\n */\nclass Url {\n\tconstructor(urlString, baseString) {\n\t\tvar absolute = (urlString.indexOf(\"://\") > -1);\n\t\tvar pathname = urlString;\n\t\tvar basePath;\n\n\t\tthis.Url = undefined;\n\t\tthis.href = urlString;\n\t\tthis.protocol = \"\";\n\t\tthis.origin = \"\";\n\t\tthis.hash = \"\";\n\t\tthis.hash = \"\";\n\t\tthis.search = \"\";\n\t\tthis.base = baseString;\n\n\t\tif (!absolute &&\n\t\t\t\tbaseString !== false &&\n\t\t\t\ttypeof(baseString) !== \"string\" &&\n\t\t\t\twindow && window.location) {\n\t\t\tthis.base = window.location.href;\n\t\t}\n\n\t\t// URL Polyfill doesn't throw an error if base is empty\n\t\tif (absolute || this.base) {\n\t\t\ttry {\n\t\t\t\tif (this.base) { // Safari doesn't like an undefined base\n\t\t\t\t\tthis.Url = new URL(urlString, this.base);\n\t\t\t\t} else {\n\t\t\t\t\tthis.Url = new URL(urlString);\n\t\t\t\t}\n\t\t\t\tthis.href = this.Url.href;\n\n\t\t\t\tthis.protocol = this.Url.protocol;\n\t\t\t\tthis.origin = this.Url.origin;\n\t\t\t\tthis.hash = this.Url.hash;\n\t\t\t\tthis.search = this.Url.search;\n\n\t\t\t\tpathname = this.Url.pathname + (this.Url.search ? this.Url.search : '');\n\t\t\t} catch (e) {\n\t\t\t\t// Skip URL parsing\n\t\t\t\tthis.Url = undefined;\n\t\t\t\t// resolve the pathname from the base\n\t\t\t\tif (this.base) {\n\t\t\t\t\tbasePath = new Path(this.base);\n\t\t\t\t\tpathname = basePath.resolve(pathname);\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\n\t\tthis.Path = new Path(pathname);\n\n\t\tthis.directory = this.Path.directory;\n\t\tthis.filename = this.Path.filename;\n\t\tthis.extension = this.Path.extension;\n\n\t}\n\n\t/**\n\t * @returns {Path}\n\t */\n\tpath () {\n\t\treturn this.Path;\n\t}\n\n\t/**\n\t * Resolves a relative path to a absolute url\n\t * @param {string} what\n\t * @returns {string} url\n\t */\n\tresolve (what) {\n\t\tvar isAbsolute = (what.indexOf(\"://\") > -1);\n\t\tvar fullpath;\n\n\t\tif (isAbsolute) {\n\t\t\treturn what;\n\t\t}\n\n\t\tfullpath = path.resolve(this.directory, what);\n\t\treturn this.origin + fullpath;\n\t}\n\n\t/**\n\t * Resolve a path relative to the url\n\t * @param {string} what\n\t * @returns {string} path\n\t */\n\trelative (what) {\n\t\treturn path.relative(what, this.directory);\n\t}\n\n\t/**\n\t * @returns {string}\n\t */\n\ttoString () {\n\t\treturn this.href;\n\t}\n}\n\nexport default Url;\n","/**\n * Checks if `value` is object-like. A value is object-like if it's not `null`\n * and has a `typeof` result of \"object\".\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is object-like, else `false`.\n * @example\n *\n * _.isObjectLike({});\n * // => true\n *\n * _.isObjectLike([1, 2, 3]);\n * // => true\n *\n * _.isObjectLike(_.noop);\n * // => false\n *\n * _.isObjectLike(null);\n * // => false\n */\nfunction isObjectLike(value) {\n  return value != null && typeof value == 'object';\n}\n\nmodule.exports = isObjectLike;\n","\"use strict\";\n\nmodule.exports = function () {\n\tvar assign = Object.assign, obj;\n\tif (typeof assign !== \"function\") return false;\n\tobj = { foo: \"raz\" };\n\tassign(obj, { bar: \"dwa\" }, { trzy: \"trzy\" });\n\treturn obj.foo + obj.bar + obj.trzy === \"razdwatrzy\";\n};\n","'use strict';\nvar global = require('../internals/global');\nvar DOMIterables = require('../internals/dom-iterables');\nvar DOMTokenListPrototype = require('../internals/dom-token-list-prototype');\nvar forEach = require('../internals/array-for-each');\nvar createNonEnumerableProperty = require('../internals/create-non-enumerable-property');\n\nvar handlePrototype = function (CollectionPrototype) {\n  // some Chrome versions have non-configurable methods on DOMTokenList\n  if (CollectionPrototype && CollectionPrototype.forEach !== forEach) try {\n    createNonEnumerableProperty(CollectionPrototype, 'forEach', forEach);\n  } catch (error) {\n    CollectionPrototype.forEach = forEach;\n  }\n};\n\nfor (var COLLECTION_NAME in DOMIterables) {\n  if (DOMIterables[COLLECTION_NAME]) {\n    handlePrototype(global[COLLECTION_NAME] && global[COLLECTION_NAME].prototype);\n  }\n}\n\nhandlePrototype(DOMTokenListPrototype);\n","\"use strict\";\n\nvar isFunction = require(\"../function/is\");\n\nvar classRe = /^\\s*class[\\s{/}]/, functionToString = Function.prototype.toString;\n\nmodule.exports = function (value) {\n\tif (!isFunction(value)) return false;\n\tif (classRe.test(functionToString.call(value))) return false;\n\treturn true;\n};\n","'use strict';\nvar $forEach = require('../internals/array-iteration').forEach;\nvar arrayMethodIsStrict = require('../internals/array-method-is-strict');\n\nvar STRICT_METHOD = arrayMethodIsStrict('forEach');\n\n// `Array.prototype.forEach` method implementation\n// https://tc39.es/ecma262/#sec-array.prototype.foreach\nmodule.exports = !STRICT_METHOD ? function forEach(callbackfn /* , thisArg */) {\n  return $forEach(this, callbackfn, arguments.length > 1 ? arguments[1] : undefined);\n// eslint-disable-next-line es/no-array-prototype-foreach -- safe\n} : [].forEach;\n","import { qs, qsa } from \"./core\";\nimport Url from \"./url\";\nimport Path from \"./path\";\n\nexport function replaceBase(doc, section){\n\tvar base;\n\tvar head;\n\tvar url = section.url;\n\tvar absolute = (url.indexOf(\"://\") > -1);\n\n\tif(!doc){\n\t\treturn;\n\t}\n\n\thead = qs(doc, \"head\");\n\tbase = qs(head, \"base\");\n\n\tif(!base) {\n\t\tbase = doc.createElement(\"base\");\n\t\thead.insertBefore(base, head.firstChild);\n\t}\n\n\t// Fix for Safari crashing if the url doesn't have an origin\n\tif (!absolute && window && window.location) {\n\t\turl = window.location.origin + url;\n\t}\n\n\tbase.setAttribute(\"href\", url);\n}\n\nexport function replaceCanonical(doc, section){\n\tvar head;\n\tvar link;\n\tvar url = section.canonical;\n\n\tif(!doc){\n\t\treturn;\n\t}\n\n\thead = qs(doc, \"head\");\n\tlink = qs(head, \"link[rel='canonical']\");\n\n\tif (link) {\n\t\tlink.setAttribute(\"href\", url);\n\t} else {\n\t\tlink = doc.createElement(\"link\");\n\t\tlink.setAttribute(\"rel\", \"canonical\");\n\t\tlink.setAttribute(\"href\", url);\n\t\thead.appendChild(link);\n\t}\n}\n\nexport function replaceMeta(doc, section){\n\tvar head;\n\tvar meta;\n\tvar id = section.idref;\n\tif(!doc){\n\t\treturn;\n\t}\n\n\thead = qs(doc, \"head\");\n\tmeta = qs(head, \"link[property='dc.identifier']\");\n\n\tif (meta) {\n\t\tmeta.setAttribute(\"content\", id);\n\t} else {\n\t\tmeta = doc.createElement(\"meta\");\n\t\tmeta.setAttribute(\"name\", \"dc.identifier\");\n\t\tmeta.setAttribute(\"content\", id);\n\t\thead.appendChild(meta);\n\t}\n}\n\n// TODO: move me to Contents\nexport function replaceLinks(contents, fn) {\n\n\tvar links = contents.querySelectorAll(\"a[href]\");\n\n\tif (!links.length) {\n\t\treturn;\n\t}\n\n\tvar base = qs(contents.ownerDocument, \"base\");\n\tvar location = base ? base.getAttribute(\"href\") : undefined;\n\tvar replaceLink = function(link){\n\t\tvar href = link.getAttribute(\"href\");\n\n\t\tif(href.indexOf(\"mailto:\") === 0){\n\t\t\treturn;\n\t\t}\n\n\t\tvar absolute = (href.indexOf(\"://\") > -1);\n\n\t\tif(absolute){\n\n\t\t\tlink.setAttribute(\"target\", \"_blank\");\n\n\t\t}else{\n\t\t\tvar linkUrl;\n\t\t\ttry {\n\t\t\t\tlinkUrl = new Url(href, location);\t\n\t\t\t} catch(error) {\n\t\t\t\t// NOOP\n\t\t\t}\n\n\t\t\tlink.onclick = function(){\n\n\t\t\t\tif(linkUrl && linkUrl.hash) {\n\t\t\t\t\tfn(linkUrl.Path.path + linkUrl.hash);\n\t\t\t\t} else if(linkUrl){\n\t\t\t\t\tfn(linkUrl.Path.path);\n\t\t\t\t} else {\n\t\t\t\t\tfn(href);\n\t\t\t\t}\n\n\t\t\t\treturn false;\n\t\t\t};\n\t\t}\n\t}.bind(this);\n\n\tfor (var i = 0; i < links.length; i++) {\n\t\treplaceLink(links[i]);\n\t}\n\n\n}\n\nexport function substitute(content, urls, replacements) {\n\turls.forEach(function(url, i){\n\t\tif (url && replacements[i]) {\n\t\t\t// Account for special characters in the file name.\n\t\t\t// See https://stackoverflow.com/a/6318729.\n\t\t\turl = url.replace(/[-[\\]{}()*+?.,\\\\^$|#\\s]/g, \"\\\\$&\");\n\t\t\tcontent = content.replace(new RegExp(url, \"g\"), replacements[i]);\n\t\t}\n\t});\n\treturn content;\n}\n","\"use strict\";\n\nvar str = \"razdwatrzy\";\n\nmodule.exports = function () {\n\tif (typeof str.contains !== \"function\") return false;\n\treturn str.contains(\"dwa\") === true && str.contains(\"foo\") === false;\n};\n","/**\n * Checks if `value` is the\n * [language type](http://www.ecma-international.org/ecma-262/7.0/#sec-ecmascript-language-types)\n * of `Object`. (e.g. arrays, functions, objects, regexes, `new Number(0)`, and `new String('')`)\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is an object, else `false`.\n * @example\n *\n * _.isObject({});\n * // => true\n *\n * _.isObject([1, 2, 3]);\n * // => true\n *\n * _.isObject(_.noop);\n * // => true\n *\n * _.isObject(null);\n * // => false\n */\nfunction isObject(value) {\n  var type = typeof value;\n  return value != null && (type == 'object' || type == 'function');\n}\n\nmodule.exports = isObject;\n","\"use strict\";\n\nmodule.exports = function (fn) {\n\tif (typeof fn !== \"function\") throw new TypeError(fn + \" is not a function\");\n\treturn fn;\n};\n","'use strict'\n\nexports.byteLength = byteLength\nexports.toByteArray = toByteArray\nexports.fromByteArray = fromByteArray\n\nvar lookup = []\nvar revLookup = []\nvar Arr = typeof Uint8Array !== 'undefined' ? Uint8Array : Array\n\nvar code = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/'\nfor (var i = 0, len = code.length; i < len; ++i) {\n  lookup[i] = code[i]\n  revLookup[code.charCodeAt(i)] = i\n}\n\n// Support decoding URL-safe base64 strings, as Node.js does.\n// See: https://en.wikipedia.org/wiki/Base64#URL_applications\nrevLookup['-'.charCodeAt(0)] = 62\nrevLookup['_'.charCodeAt(0)] = 63\n\nfunction getLens (b64) {\n  var len = b64.length\n\n  if (len % 4 > 0) {\n    throw new Error('Invalid string. Length must be a multiple of 4')\n  }\n\n  // Trim off extra bytes after placeholder bytes are found\n  // See: https://github.com/beatgammit/base64-js/issues/42\n  var validLen = b64.indexOf('=')\n  if (validLen === -1) validLen = len\n\n  var placeHoldersLen = validLen === len\n    ? 0\n    : 4 - (validLen % 4)\n\n  return [validLen, placeHoldersLen]\n}\n\n// base64 is 4/3 + up to two characters of the original data\nfunction byteLength (b64) {\n  var lens = getLens(b64)\n  var validLen = lens[0]\n  var placeHoldersLen = lens[1]\n  return ((validLen + placeHoldersLen) * 3 / 4) - placeHoldersLen\n}\n\nfunction _byteLength (b64, validLen, placeHoldersLen) {\n  return ((validLen + placeHoldersLen) * 3 / 4) - placeHoldersLen\n}\n\nfunction toByteArray (b64) {\n  var tmp\n  var lens = getLens(b64)\n  var validLen = lens[0]\n  var placeHoldersLen = lens[1]\n\n  var arr = new Arr(_byteLength(b64, validLen, placeHoldersLen))\n\n  var curByte = 0\n\n  // if there are placeholders, only get up to the last complete 4 chars\n  var len = placeHoldersLen > 0\n    ? validLen - 4\n    : validLen\n\n  var i\n  for (i = 0; i < len; i += 4) {\n    tmp =\n      (revLookup[b64.charCodeAt(i)] << 18) |\n      (revLookup[b64.charCodeAt(i + 1)] << 12) |\n      (revLookup[b64.charCodeAt(i + 2)] << 6) |\n      revLookup[b64.charCodeAt(i + 3)]\n    arr[curByte++] = (tmp >> 16) & 0xFF\n    arr[curByte++] = (tmp >> 8) & 0xFF\n    arr[curByte++] = tmp & 0xFF\n  }\n\n  if (placeHoldersLen === 2) {\n    tmp =\n      (revLookup[b64.charCodeAt(i)] << 2) |\n      (revLookup[b64.charCodeAt(i + 1)] >> 4)\n    arr[curByte++] = tmp & 0xFF\n  }\n\n  if (placeHoldersLen === 1) {\n    tmp =\n      (revLookup[b64.charCodeAt(i)] << 10) |\n      (revLookup[b64.charCodeAt(i + 1)] << 4) |\n      (revLookup[b64.charCodeAt(i + 2)] >> 2)\n    arr[curByte++] = (tmp >> 8) & 0xFF\n    arr[curByte++] = tmp & 0xFF\n  }\n\n  return arr\n}\n\nfunction tripletToBase64 (num) {\n  return lookup[num >> 18 & 0x3F] +\n    lookup[num >> 12 & 0x3F] +\n    lookup[num >> 6 & 0x3F] +\n    lookup[num & 0x3F]\n}\n\nfunction encodeChunk (uint8, start, end) {\n  var tmp\n  var output = []\n  for (var i = start; i < end; i += 3) {\n    tmp =\n      ((uint8[i] << 16) & 0xFF0000) +\n      ((uint8[i + 1] << 8) & 0xFF00) +\n      (uint8[i + 2] & 0xFF)\n    output.push(tripletToBase64(tmp))\n  }\n  return output.join('')\n}\n\nfunction fromByteArray (uint8) {\n  var tmp\n  var len = uint8.length\n  var extraBytes = len % 3 // if we have 1 byte left, pad 2 bytes\n  var parts = []\n  var maxChunkLength = 16383 // must be multiple of 3\n\n  // go through the array every three bytes, we'll deal with trailing stuff later\n  for (var i = 0, len2 = len - extraBytes; i < len2; i += maxChunkLength) {\n    parts.push(encodeChunk(\n      uint8, i, (i + maxChunkLength) > len2 ? len2 : (i + maxChunkLength)\n    ))\n  }\n\n  // pad the end with zeros, but make sure to not forget the extra bytes\n  if (extraBytes === 1) {\n    tmp = uint8[len - 1]\n    parts.push(\n      lookup[tmp >> 2] +\n      lookup[(tmp << 4) & 0x3F] +\n      '=='\n    )\n  } else if (extraBytes === 2) {\n    tmp = (uint8[len - 2] << 8) + uint8[len - 1]\n    parts.push(\n      lookup[tmp >> 10] +\n      lookup[(tmp >> 4) & 0x3F] +\n      lookup[(tmp << 2) & 0x3F] +\n      '='\n    )\n  }\n\n  return parts.join('')\n}\n","\"use strict\";\n\nmodule.exports = require(\"./is-implemented\")() ? Object.assign : require(\"./shim\");\n","var dom = require('./dom')\nexports.DOMImplementation = dom.DOMImplementation\nexports.XMLSerializer = dom.XMLSerializer\nexports.DOMParser = require('./dom-parser').DOMParser\n","/** Used for built-in method references. */\nvar objectProto = Object.prototype;\n\n/**\n * Used to resolve the\n * [`toStringTag`](http://ecma-international.org/ecma-262/7.0/#sec-object.prototype.tostring)\n * of values.\n */\nvar nativeObjectToString = objectProto.toString;\n\n/**\n * Converts `value` to a string using `Object.prototype.toString`.\n *\n * @private\n * @param {*} value The value to convert.\n * @returns {string} Returns the converted string.\n */\nfunction objectToString(value) {\n  return nativeObjectToString.call(value);\n}\n\nmodule.exports = objectToString;\n","var freeGlobal = require('./_freeGlobal');\n\n/** Detect free variable `self`. */\nvar freeSelf = typeof self == 'object' && self && self.Object === Object && self;\n\n/** Used as a reference to the global object. */\nvar root = freeGlobal || freeSelf || Function('return this')();\n\nmodule.exports = root;\n","import EpubCFI from \"./epubcfi\";\nimport { nodeBounds } from \"./utils/core\";\n\n/**\n * Map text locations to CFI ranges\n * @class\n * @param {Layout} layout Layout to apply\n * @param {string} [direction=\"ltr\"] Text direction\n * @param {string} [axis=\"horizontal\"] vertical or horizontal axis\n * @param {boolean} [dev] toggle developer highlighting\n */\nclass Mapping {\n\tconstructor(layout, direction, axis, dev=false) {\n\t\tthis.layout = layout;\n\t\tthis.horizontal = (axis === \"horizontal\") ? true : false;\n\t\tthis.direction = direction || \"ltr\";\n\t\tthis._dev = dev;\n\t}\n\n\t/**\n\t * Find CFI pairs for entire section at once\n\t */\n\tsection(view) {\n\t\tvar ranges = this.findRanges(view);\n\t\tvar map = this.rangeListToCfiList(view.section.cfiBase, ranges);\n\n\t\treturn map;\n\t}\n\n\t/**\n\t * Find CFI pairs for a page\n\t * @param {Contents} contents Contents from view\n\t * @param {string} cfiBase string of the base for a cfi\n\t * @param {number} start position to start at\n\t * @param {number} end position to end at\n\t */\n\tpage(contents, cfiBase, start, end) {\n\t\tvar root = contents && contents.document ? contents.document.body : false;\n\t\tvar result;\n\n\t\tif (!root) {\n\t\t\treturn;\n\t\t}\n\n\t\tresult = this.rangePairToCfiPair(cfiBase, {\n\t\t\tstart: this.findStart(root, start, end),\n\t\t\tend: this.findEnd(root, start, end)\n\t\t});\n\n\t\tif (this._dev === true) {\n\t\t\tlet doc = contents.document;\n\t\t\tlet startRange = new EpubCFI(result.start).toRange(doc);\n\t\t\tlet endRange = new EpubCFI(result.end).toRange(doc);\n\n\t\t\tlet selection = doc.defaultView.getSelection();\n\t\t\tlet r = doc.createRange();\n\t\t\tselection.removeAllRanges();\n\t\t\tr.setStart(startRange.startContainer, startRange.startOffset);\n\t\t\tr.setEnd(endRange.endContainer, endRange.endOffset);\n\t\t\tselection.addRange(r);\n\t\t}\n\n\t\treturn result;\n\t}\n\n\t/**\n\t * Walk a node, preforming a function on each node it finds\n\t * @private\n\t * @param {Node} root Node to walkToNode\n\t * @param {function} func walk function\n\t * @return {*} returns the result of the walk function\n\t */\n\twalk(root, func) {\n\t\t// IE11 has strange issue, if root is text node IE throws exception on\n\t\t// calling treeWalker.nextNode(), saying\n\t\t// Unexpected call to method or property access instead of returning null value\n\t\tif(root && root.nodeType === Node.TEXT_NODE) {\n\t\t\treturn;\n\t\t}\n\t\t// safeFilter is required so that it can work in IE as filter is a function for IE\n\t\t// and for other browser filter is an object.\n\t\tvar filter = {\n\t\t\tacceptNode: function(node) {\n\t\t\t\tif (node.data.trim().length > 0) {\n\t\t\t\t\treturn NodeFilter.FILTER_ACCEPT;\n\t\t\t\t} else {\n\t\t\t\t\treturn NodeFilter.FILTER_REJECT;\n\t\t\t\t}\n\t\t\t}\n\t\t};\n\t\tvar safeFilter = filter.acceptNode;\n\t\tsafeFilter.acceptNode = filter.acceptNode;\n\n\t\tvar treeWalker = document.createTreeWalker(root, NodeFilter.SHOW_TEXT, safeFilter, false);\n\t\tvar node;\n\t\tvar result;\n\t\twhile ((node = treeWalker.nextNode())) {\n\t\t\tresult = func(node);\n\t\t\tif(result) break;\n\t\t}\n\n\t\treturn result;\n\t}\n\n\tfindRanges(view){\n\t\tvar columns = [];\n\t\tvar scrollWidth = view.contents.scrollWidth();\n\t\tvar spreads = Math.ceil( scrollWidth / this.layout.spreadWidth);\n\t\tvar count = spreads * this.layout.divisor;\n\t\tvar columnWidth = this.layout.columnWidth;\n\t\tvar gap = this.layout.gap;\n\t\tvar start, end;\n\n\t\tfor (var i = 0; i < count.pages; i++) {\n\t\t\tstart = (columnWidth + gap) * i;\n\t\t\tend = (columnWidth * (i+1)) + (gap * i);\n\t\t\tcolumns.push({\n\t\t\t\tstart: this.findStart(view.document.body, start, end),\n\t\t\t\tend: this.findEnd(view.document.body, start, end)\n\t\t\t});\n\t\t}\n\n\t\treturn columns;\n\t}\n\n\t/**\n\t * Find Start Range\n\t * @private\n\t * @param {Node} root root node\n\t * @param {number} start position to start at\n\t * @param {number} end position to end at\n\t * @return {Range}\n\t */\n\tfindStart(root, start, end){\n\t\tvar stack = [root];\n\t\tvar $el;\n\t\tvar found;\n\t\tvar $prev = root;\n\n\t\twhile (stack.length) {\n\n\t\t\t$el = stack.shift();\n\n\t\t\tfound = this.walk($el, (node) => {\n\t\t\t\tvar left, right, top, bottom;\n\t\t\t\tvar elPos;\n\t\t\t\tvar elRange;\n\n\n\t\t\t\telPos = nodeBounds(node);\n\n\t\t\t\tif (this.horizontal && this.direction === \"ltr\") {\n\n\t\t\t\t\tleft = this.horizontal ? elPos.left : elPos.top;\n\t\t\t\t\tright = this.horizontal ? elPos.right : elPos.bottom;\n\n\t\t\t\t\tif( left >= start && left <= end ) {\n\t\t\t\t\t\treturn node;\n\t\t\t\t\t} else if (right > start) {\n\t\t\t\t\t\treturn node;\n\t\t\t\t\t} else {\n\t\t\t\t\t\t$prev = node;\n\t\t\t\t\t\tstack.push(node);\n\t\t\t\t\t}\n\n\t\t\t\t} else if (this.horizontal && this.direction === \"rtl\") {\n\n\t\t\t\t\tleft = elPos.left;\n\t\t\t\t\tright = elPos.right;\n\n\t\t\t\t\tif( right <= end && right >= start ) {\n\t\t\t\t\t\treturn node;\n\t\t\t\t\t} else if (left < end) {\n\t\t\t\t\t\treturn node;\n\t\t\t\t\t} else {\n\t\t\t\t\t\t$prev = node;\n\t\t\t\t\t\tstack.push(node);\n\t\t\t\t\t}\n\n\t\t\t\t} else {\n\n\t\t\t\t\ttop = elPos.top;\n\t\t\t\t\tbottom = elPos.bottom;\n\n\t\t\t\t\tif( top >= start && top <= end ) {\n\t\t\t\t\t\treturn node;\n\t\t\t\t\t} else if (bottom > start) {\n\t\t\t\t\t\treturn node;\n\t\t\t\t\t} else {\n\t\t\t\t\t\t$prev = node;\n\t\t\t\t\t\tstack.push(node);\n\t\t\t\t\t}\n\n\t\t\t\t}\n\n\n\t\t\t});\n\n\t\t\tif(found) {\n\t\t\t\treturn this.findTextStartRange(found, start, end);\n\t\t\t}\n\n\t\t}\n\n\t\t// Return last element\n\t\treturn this.findTextStartRange($prev, start, end);\n\t}\n\n\t/**\n\t * Find End Range\n\t * @private\n\t * @param {Node} root root node\n\t * @param {number} start position to start at\n\t * @param {number} end position to end at\n\t * @return {Range}\n\t */\n\tfindEnd(root, start, end){\n\t\tvar stack = [root];\n\t\tvar $el;\n\t\tvar $prev = root;\n\t\tvar found;\n\n\t\twhile (stack.length) {\n\n\t\t\t$el = stack.shift();\n\n\t\t\tfound = this.walk($el, (node) => {\n\n\t\t\t\tvar left, right, top, bottom;\n\t\t\t\tvar elPos;\n\t\t\t\tvar elRange;\n\n\t\t\t\telPos = nodeBounds(node);\n\n\t\t\t\tif (this.horizontal && this.direction === \"ltr\") {\n\n\t\t\t\t\tleft = Math.round(elPos.left);\n\t\t\t\t\tright = Math.round(elPos.right);\n\n\t\t\t\t\tif(left > end && $prev) {\n\t\t\t\t\t\treturn $prev;\n\t\t\t\t\t} else if(right > end) {\n\t\t\t\t\t\treturn node;\n\t\t\t\t\t} else {\n\t\t\t\t\t\t$prev = node;\n\t\t\t\t\t\tstack.push(node);\n\t\t\t\t\t}\n\n\t\t\t\t} else if (this.horizontal && this.direction === \"rtl\") {\n\n\t\t\t\t\tleft = Math.round(this.horizontal ? elPos.left : elPos.top);\n\t\t\t\t\tright = Math.round(this.horizontal ? elPos.right : elPos.bottom);\n\n\t\t\t\t\tif(right < start && $prev) {\n\t\t\t\t\t\treturn $prev;\n\t\t\t\t\t} else if(left < start) {\n\t\t\t\t\t\treturn node;\n\t\t\t\t\t} else {\n\t\t\t\t\t\t$prev = node;\n\t\t\t\t\t\tstack.push(node);\n\t\t\t\t\t}\n\n\t\t\t\t} else {\n\n\t\t\t\t\ttop = Math.round(elPos.top);\n\t\t\t\t\tbottom = Math.round(elPos.bottom);\n\n\t\t\t\t\tif(top > end && $prev) {\n\t\t\t\t\t\treturn $prev;\n\t\t\t\t\t} else if(bottom > end) {\n\t\t\t\t\t\treturn node;\n\t\t\t\t\t} else {\n\t\t\t\t\t\t$prev = node;\n\t\t\t\t\t\tstack.push(node);\n\t\t\t\t\t}\n\n\t\t\t\t}\n\n\t\t\t});\n\n\n\t\t\tif(found){\n\t\t\t\treturn this.findTextEndRange(found, start, end);\n\t\t\t}\n\n\t\t}\n\n\t\t// end of chapter\n\t\treturn this.findTextEndRange($prev, start, end);\n\t}\n\n\t/**\n\t * Find Text Start Range\n\t * @private\n\t * @param {Node} root root node\n\t * @param {number} start position to start at\n\t * @param {number} end position to end at\n\t * @return {Range}\n\t */\n\tfindTextStartRange(node, start, end){\n\t\tvar ranges = this.splitTextNodeIntoRanges(node);\n\t\tvar range;\n\t\tvar pos;\n\t\tvar left, top, right;\n\n\t\tfor (var i = 0; i < ranges.length; i++) {\n\t\t\trange = ranges[i];\n\n\t\t\tpos = range.getBoundingClientRect();\n\n\t\t\tif (this.horizontal && this.direction === \"ltr\") {\n\n\t\t\t\tleft = pos.left;\n\t\t\t\tif( left >= start ) {\n\t\t\t\t\treturn range;\n\t\t\t\t}\n\n\t\t\t} else if (this.horizontal && this.direction === \"rtl\") {\n\n\t\t\t\tright = pos.right;\n\t\t\t\tif( right <= end ) {\n\t\t\t\t\treturn range;\n\t\t\t\t}\n\n\t\t\t} else {\n\n\t\t\t\ttop = pos.top;\n\t\t\t\tif( top >= start ) {\n\t\t\t\t\treturn range;\n\t\t\t\t}\n\n\t\t\t}\n\n\t\t\t// prev = range;\n\n\t\t}\n\n\t\treturn ranges[0];\n\t}\n\n\t/**\n\t * Find Text End Range\n\t * @private\n\t * @param {Node} root root node\n\t * @param {number} start position to start at\n\t * @param {number} end position to end at\n\t * @return {Range}\n\t */\n\tfindTextEndRange(node, start, end){\n\t\tvar ranges = this.splitTextNodeIntoRanges(node);\n\t\tvar prev;\n\t\tvar range;\n\t\tvar pos;\n\t\tvar left, right, top, bottom;\n\n\t\tfor (var i = 0; i < ranges.length; i++) {\n\t\t\trange = ranges[i];\n\n\t\t\tpos = range.getBoundingClientRect();\n\n\t\t\tif (this.horizontal && this.direction === \"ltr\") {\n\n\t\t\t\tleft = pos.left;\n\t\t\t\tright = pos.right;\n\n\t\t\t\tif(left > end && prev) {\n\t\t\t\t\treturn prev;\n\t\t\t\t} else if(right > end) {\n\t\t\t\t\treturn range;\n\t\t\t\t}\n\n\t\t\t} else if (this.horizontal && this.direction === \"rtl\") {\n\n\t\t\t\tleft = pos.left\n\t\t\t\tright = pos.right;\n\n\t\t\t\tif(right < start && prev) {\n\t\t\t\t\treturn prev;\n\t\t\t\t} else if(left < start) {\n\t\t\t\t\treturn range;\n\t\t\t\t}\n\n\t\t\t} else {\n\n\t\t\t\ttop = pos.top;\n\t\t\t\tbottom = pos.bottom;\n\n\t\t\t\tif(top > end && prev) {\n\t\t\t\t\treturn prev;\n\t\t\t\t} else if(bottom > end) {\n\t\t\t\t\treturn range;\n\t\t\t\t}\n\n\t\t\t}\n\n\n\t\t\tprev = range;\n\n\t\t}\n\n\t\t// Ends before limit\n\t\treturn ranges[ranges.length-1];\n\n\t}\n\n\t/**\n\t * Split up a text node into ranges for each word\n\t * @private\n\t * @param {Node} root root node\n\t * @param {string} [_splitter] what to split on\n\t * @return {Range[]}\n\t */\n\tsplitTextNodeIntoRanges(node, _splitter){\n\t\tvar ranges = [];\n\t\tvar textContent = node.textContent || \"\";\n\t\tvar text = textContent.trim();\n\t\tvar range;\n\t\tvar doc = node.ownerDocument;\n\t\tvar splitter = _splitter || \" \";\n\n\t\tvar pos = text.indexOf(splitter);\n\n\t\tif(pos === -1 || node.nodeType != Node.TEXT_NODE) {\n\t\t\trange = doc.createRange();\n\t\t\trange.selectNodeContents(node);\n\t\t\treturn [range];\n\t\t}\n\n\t\trange = doc.createRange();\n\t\trange.setStart(node, 0);\n\t\trange.setEnd(node, pos);\n\t\tranges.push(range);\n\t\trange = false;\n\n\t\twhile ( pos != -1 ) {\n\n\t\t\tpos = text.indexOf(splitter, pos + 1);\n\t\t\tif(pos > 0) {\n\n\t\t\t\tif(range) {\n\t\t\t\t\trange.setEnd(node, pos);\n\t\t\t\t\tranges.push(range);\n\t\t\t\t}\n\n\t\t\t\trange = doc.createRange();\n\t\t\t\trange.setStart(node, pos+1);\n\t\t\t}\n\t\t}\n\n\t\tif(range) {\n\t\t\trange.setEnd(node, text.length);\n\t\t\tranges.push(range);\n\t\t}\n\n\t\treturn ranges;\n\t}\n\n\n\t/**\n\t * Turn a pair of ranges into a pair of CFIs\n\t * @private\n\t * @param {string} cfiBase base string for an EpubCFI\n\t * @param {object} rangePair { start: Range, end: Range }\n\t * @return {object} { start: \"epubcfi(...)\", end: \"epubcfi(...)\" }\n\t */\n\trangePairToCfiPair(cfiBase, rangePair){\n\n\t\tvar startRange = rangePair.start;\n\t\tvar endRange = rangePair.end;\n\n\t\tstartRange.collapse(true);\n\t\tendRange.collapse(false);\n\n\t\tlet startCfi = new EpubCFI(startRange, cfiBase).toString();\n\t\tlet endCfi = new EpubCFI(endRange, cfiBase).toString();\n\n\t\treturn {\n\t\t\tstart: startCfi,\n\t\t\tend: endCfi\n\t\t};\n\n\t}\n\n\trangeListToCfiList(cfiBase, columns){\n\t\tvar map = [];\n\t\tvar cifPair;\n\n\t\tfor (var i = 0; i < columns.length; i++) {\n\t\t\tcifPair = this.rangePairToCfiPair(cfiBase, columns[i]);\n\n\t\t\tmap.push(cifPair);\n\n\t\t}\n\n\t\treturn map;\n\t}\n\n\t/**\n\t * Set the axis for mapping\n\t * @param {string} axis horizontal | vertical\n\t * @return {boolean} is it horizontal?\n\t */\n\taxis(axis) {\n\t\tif (axis) {\n\t\t\tthis.horizontal = (axis === \"horizontal\") ? true : false;\n\t\t}\n\t\treturn this.horizontal;\n\t}\n}\n\nexport default Mapping;\n","import Book from \"./book\";\nimport Rendition from \"./rendition\";\nimport CFI from \"./epubcfi\";\nimport Contents from \"./contents\";\nimport * as utils from \"./utils/core\";\nimport { EPUBJS_VERSION } from \"./utils/constants\";\n\nimport IframeView from \"./managers/views/iframe\";\nimport DefaultViewManager from \"./managers/default\";\nimport ContinuousViewManager from \"./managers/continuous\";\n\n/**\n * Creates a new Book\n * @param {string|ArrayBuffer} url URL, Path or ArrayBuffer\n * @param {object} options to pass to the book\n * @returns {Book} a new Book object\n * @example ePub(\"/path/to/book.epub\", {})\n */\nfunction ePub(url, options) {\n\treturn new Book(url, options);\n}\n\nePub.VERSION = EPUBJS_VERSION;\n\nif (typeof(global) !== \"undefined\") {\n\tglobal.EPUBJS_VERSION = EPUBJS_VERSION;\n}\n\nePub.Book = Book;\nePub.Rendition = Rendition;\nePub.Contents = Contents;\nePub.CFI = CFI;\nePub.utils = utils;\n\nexport default ePub;\n","var Symbol = require('./_Symbol'),\n    getRawTag = require('./_getRawTag'),\n    objectToString = require('./_objectToString');\n\n/** `Object#toString` result references. */\nvar nullTag = '[object Null]',\n    undefinedTag = '[object Undefined]';\n\n/** Built-in value references. */\nvar symToStringTag = Symbol ? Symbol.toStringTag : undefined;\n\n/**\n * The base implementation of `getTag` without fallbacks for buggy environments.\n *\n * @private\n * @param {*} value The value to query.\n * @returns {string} Returns the `toStringTag`.\n */\nfunction baseGetTag(value) {\n  if (value == null) {\n    return value === undefined ? undefinedTag : nullTag;\n  }\n  return (symToStringTag && symToStringTag in Object(value))\n    ? getRawTag(value)\n    : objectToString(value);\n}\n\nmodule.exports = baseGetTag;\n","'use strict';\n\nif (!process) {\n  var process = {\n    \"cwd\" : function () { return '/' }\n  };\n}\n\nfunction assertPath(path) {\n  if (typeof path !== 'string') {\n    throw new TypeError('Path must be a string. Received ' + path);\n  }\n}\n\n// Resolves . and .. elements in a path with directory names\nfunction normalizeStringPosix(path, allowAboveRoot) {\n  var res = '';\n  var lastSlash = -1;\n  var dots = 0;\n  var code;\n  for (var i = 0; i <= path.length; ++i) {\n    if (i < path.length)\n      code = path.charCodeAt(i);\n    else if (code === 47/*/*/)\n      break;\n    else\n      code = 47/*/*/;\n    if (code === 47/*/*/) {\n      if (lastSlash === i - 1 || dots === 1) {\n        // NOOP\n      } else if (lastSlash !== i - 1 && dots === 2) {\n        if (res.length < 2 ||\n            res.charCodeAt(res.length - 1) !== 46/*.*/ ||\n            res.charCodeAt(res.length - 2) !== 46/*.*/) {\n          if (res.length > 2) {\n            var start = res.length - 1;\n            var j = start;\n            for (; j >= 0; --j) {\n              if (res.charCodeAt(j) === 47/*/*/)\n                break;\n            }\n            if (j !== start) {\n              if (j === -1)\n                res = '';\n              else\n                res = res.slice(0, j);\n              lastSlash = i;\n              dots = 0;\n              continue;\n            }\n          } else if (res.length === 2 || res.length === 1) {\n            res = '';\n            lastSlash = i;\n            dots = 0;\n            continue;\n          }\n        }\n        if (allowAboveRoot) {\n          if (res.length > 0)\n            res += '/..';\n          else\n            res = '..';\n        }\n      } else {\n        if (res.length > 0)\n          res += '/' + path.slice(lastSlash + 1, i);\n        else\n          res = path.slice(lastSlash + 1, i);\n      }\n      lastSlash = i;\n      dots = 0;\n    } else if (code === 46/*.*/ && dots !== -1) {\n      ++dots;\n    } else {\n      dots = -1;\n    }\n  }\n  return res;\n}\n\nfunction _format(sep, pathObject) {\n  var dir = pathObject.dir || pathObject.root;\n  var base = pathObject.base ||\n    ((pathObject.name || '') + (pathObject.ext || ''));\n  if (!dir) {\n    return base;\n  }\n  if (dir === pathObject.root) {\n    return dir + base;\n  }\n  return dir + sep + base;\n}\n\nvar posix = {\n  // path.resolve([from ...], to)\n  resolve: function resolve() {\n    var resolvedPath = '';\n    var resolvedAbsolute = false;\n    var cwd;\n\n    for (var i = arguments.length - 1; i >= -1 && !resolvedAbsolute; i--) {\n      var path;\n      if (i >= 0)\n        path = arguments[i];\n      else {\n        if (cwd === undefined)\n          cwd = process.cwd();\n        path = cwd;\n      }\n\n      assertPath(path);\n\n      // Skip empty entries\n      if (path.length === 0) {\n        continue;\n      }\n\n      resolvedPath = path + '/' + resolvedPath;\n      resolvedAbsolute = path.charCodeAt(0) === 47/*/*/;\n    }\n\n    // At this point the path should be resolved to a full absolute path, but\n    // handle relative paths to be safe (might happen when process.cwd() fails)\n\n    // Normalize the path\n    resolvedPath = normalizeStringPosix(resolvedPath, !resolvedAbsolute);\n\n    if (resolvedAbsolute) {\n      if (resolvedPath.length > 0)\n        return '/' + resolvedPath;\n      else\n        return '/';\n    } else if (resolvedPath.length > 0) {\n      return resolvedPath;\n    } else {\n      return '.';\n    }\n  },\n\n\n  normalize: function normalize(path) {\n    assertPath(path);\n\n    if (path.length === 0)\n      return '.';\n\n    var isAbsolute = path.charCodeAt(0) === 47/*/*/;\n    var trailingSeparator = path.charCodeAt(path.length - 1) === 47/*/*/;\n\n    // Normalize the path\n    path = normalizeStringPosix(path, !isAbsolute);\n\n    if (path.length === 0 && !isAbsolute)\n      path = '.';\n    if (path.length > 0 && trailingSeparator)\n      path += '/';\n\n    if (isAbsolute)\n      return '/' + path;\n    return path;\n  },\n\n\n  isAbsolute: function isAbsolute(path) {\n    assertPath(path);\n    return path.length > 0 && path.charCodeAt(0) === 47/*/*/;\n  },\n\n\n  join: function join() {\n    if (arguments.length === 0)\n      return '.';\n    var joined;\n    for (var i = 0; i < arguments.length; ++i) {\n      var arg = arguments[i];\n      assertPath(arg);\n      if (arg.length > 0) {\n        if (joined === undefined)\n          joined = arg;\n        else\n          joined += '/' + arg;\n      }\n    }\n    if (joined === undefined)\n      return '.';\n    return posix.normalize(joined);\n  },\n\n\n  relative: function relative(from, to) {\n    assertPath(from);\n    assertPath(to);\n\n    if (from === to)\n      return '';\n\n    from = posix.resolve(from);\n    to = posix.resolve(to);\n\n    if (from === to)\n      return '';\n\n    // Trim any leading backslashes\n    var fromStart = 1;\n    for (; fromStart < from.length; ++fromStart) {\n      if (from.charCodeAt(fromStart) !== 47/*/*/)\n        break;\n    }\n    var fromEnd = from.length;\n    var fromLen = (fromEnd - fromStart);\n\n    // Trim any leading backslashes\n    var toStart = 1;\n    for (; toStart < to.length; ++toStart) {\n      if (to.charCodeAt(toStart) !== 47/*/*/)\n        break;\n    }\n    var toEnd = to.length;\n    var toLen = (toEnd - toStart);\n\n    // Compare paths to find the longest common path from root\n    var length = (fromLen < toLen ? fromLen : toLen);\n    var lastCommonSep = -1;\n    var i = 0;\n    for (; i <= length; ++i) {\n      if (i === length) {\n        if (toLen > length) {\n          if (to.charCodeAt(toStart + i) === 47/*/*/) {\n            // We get here if `from` is the exact base path for `to`.\n            // For example: from='/foo/bar'; to='/foo/bar/baz'\n            return to.slice(toStart + i + 1);\n          } else if (i === 0) {\n            // We get here if `from` is the root\n            // For example: from='/'; to='/foo'\n            return to.slice(toStart + i);\n          }\n        } else if (fromLen > length) {\n          if (from.charCodeAt(fromStart + i) === 47/*/*/) {\n            // We get here if `to` is the exact base path for `from`.\n            // For example: from='/foo/bar/baz'; to='/foo/bar'\n            lastCommonSep = i;\n          } else if (i === 0) {\n            // We get here if `to` is the root.\n            // For example: from='/foo'; to='/'\n            lastCommonSep = 0;\n          }\n        }\n        break;\n      }\n      var fromCode = from.charCodeAt(fromStart + i);\n      var toCode = to.charCodeAt(toStart + i);\n      if (fromCode !== toCode)\n        break;\n      else if (fromCode === 47/*/*/)\n        lastCommonSep = i;\n    }\n\n    var out = '';\n    // Generate the relative path based on the path difference between `to`\n    // and `from`\n    for (i = fromStart + lastCommonSep + 1; i <= fromEnd; ++i) {\n      if (i === fromEnd || from.charCodeAt(i) === 47/*/*/) {\n        if (out.length === 0)\n          out += '..';\n        else\n          out += '/..';\n      }\n    }\n\n    // Lastly, append the rest of the destination (`to`) path that comes after\n    // the common path parts\n    if (out.length > 0)\n      return out + to.slice(toStart + lastCommonSep);\n    else {\n      toStart += lastCommonSep;\n      if (to.charCodeAt(toStart) === 47/*/*/)\n        ++toStart;\n      return to.slice(toStart);\n    }\n  },\n\n\n  _makeLong: function _makeLong(path) {\n    return path;\n  },\n\n\n  dirname: function dirname(path) {\n    assertPath(path);\n    if (path.length === 0)\n      return '.';\n    var code = path.charCodeAt(0);\n    var hasRoot = (code === 47/*/*/);\n    var end = -1;\n    var matchedSlash = true;\n    for (var i = path.length - 1; i >= 1; --i) {\n      code = path.charCodeAt(i);\n      if (code === 47/*/*/) {\n        if (!matchedSlash) {\n          end = i;\n          break;\n        }\n      } else {\n        // We saw the first non-path separator\n        matchedSlash = false;\n      }\n    }\n\n    if (end === -1)\n      return hasRoot ? '/' : '.';\n    if (hasRoot && end === 1)\n      return '//';\n    return path.slice(0, end);\n  },\n\n\n  basename: function basename(path, ext) {\n    if (ext !== undefined && typeof ext !== 'string')\n      throw new TypeError('\"ext\" argument must be a string');\n    assertPath(path);\n\n    var start = 0;\n    var end = -1;\n    var matchedSlash = true;\n    var i;\n\n    if (ext !== undefined && ext.length > 0 && ext.length <= path.length) {\n      if (ext.length === path.length && ext === path)\n        return '';\n      var extIdx = ext.length - 1;\n      var firstNonSlashEnd = -1;\n      for (i = path.length - 1; i >= 0; --i) {\n        var code = path.charCodeAt(i);\n        if (code === 47/*/*/) {\n          // If we reached a path separator that was not part of a set of path\n          // separators at the end of the string, stop now\n          if (!matchedSlash) {\n            start = i + 1;\n            break;\n          }\n        } else {\n          if (firstNonSlashEnd === -1) {\n            // We saw the first non-path separator, remember this index in case\n            // we need it if the extension ends up not matching\n            matchedSlash = false;\n            firstNonSlashEnd = i + 1;\n          }\n          if (extIdx >= 0) {\n            // Try to match the explicit extension\n            if (code === ext.charCodeAt(extIdx)) {\n              if (--extIdx === -1) {\n                // We matched the extension, so mark this as the end of our path\n                // component\n                end = i;\n              }\n            } else {\n              // Extension does not match, so our result is the entire path\n              // component\n              extIdx = -1;\n              end = firstNonSlashEnd;\n            }\n          }\n        }\n      }\n\n      if (start === end)\n        end = firstNonSlashEnd;\n      else if (end === -1)\n        end = path.length;\n      return path.slice(start, end);\n    } else {\n      for (i = path.length - 1; i >= 0; --i) {\n        if (path.charCodeAt(i) === 47/*/*/) {\n          // If we reached a path separator that was not part of a set of path\n          // separators at the end of the string, stop now\n          if (!matchedSlash) {\n            start = i + 1;\n            break;\n          }\n        } else if (end === -1) {\n          // We saw the first non-path separator, mark this as the end of our\n          // path component\n          matchedSlash = false;\n          end = i + 1;\n        }\n      }\n\n      if (end === -1)\n        return '';\n      return path.slice(start, end);\n    }\n  },\n\n\n  extname: function extname(path) {\n    assertPath(path);\n    var startDot = -1;\n    var startPart = 0;\n    var end = -1;\n    var matchedSlash = true;\n    // Track the state of characters (if any) we see before our first dot and\n    // after any path separator we find\n    var preDotState = 0;\n    for (var i = path.length - 1; i >= 0; --i) {\n      var code = path.charCodeAt(i);\n      if (code === 47/*/*/) {\n        // If we reached a path separator that was not part of a set of path\n        // separators at the end of the string, stop now\n        if (!matchedSlash) {\n          startPart = i + 1;\n          break;\n        }\n        continue;\n      }\n      if (end === -1) {\n        // We saw the first non-path separator, mark this as the end of our\n        // extension\n        matchedSlash = false;\n        end = i + 1;\n      }\n      if (code === 46/*.*/) {\n        // If this is our first dot, mark it as the start of our extension\n        if (startDot === -1)\n          startDot = i;\n        else if (preDotState !== 1)\n          preDotState = 1;\n      } else if (startDot !== -1) {\n        // We saw a non-dot and non-path separator before our dot, so we should\n        // have a good chance at having a non-empty extension\n        preDotState = -1;\n      }\n    }\n\n    if (startDot === -1 ||\n        end === -1 ||\n        // We saw a non-dot character immediately before the dot\n        preDotState === 0 ||\n        // The (right-most) trimmed path component is exactly '..'\n        (preDotState === 1 &&\n         startDot === end - 1 &&\n         startDot === startPart + 1)) {\n      return '';\n    }\n    return path.slice(startDot, end);\n  },\n\n\n  format: function format(pathObject) {\n    if (pathObject === null || typeof pathObject !== 'object') {\n      throw new TypeError(\n        'Parameter \"pathObject\" must be an object, not ' + typeof(pathObject)\n      );\n    }\n    return _format('/', pathObject);\n  },\n\n\n  parse: function parse(path) {\n    assertPath(path);\n\n    var ret = { root: '', dir: '', base: '', ext: '', name: '' };\n    if (path.length === 0)\n      return ret;\n    var code = path.charCodeAt(0);\n    var isAbsolute = (code === 47/*/*/);\n    var start;\n    if (isAbsolute) {\n      ret.root = '/';\n      start = 1;\n    } else {\n      start = 0;\n    }\n    var startDot = -1;\n    var startPart = 0;\n    var end = -1;\n    var matchedSlash = true;\n    var i = path.length - 1;\n\n    // Track the state of characters (if any) we see before our first dot and\n    // after any path separator we find\n    var preDotState = 0;\n\n    // Get non-dir info\n    for (; i >= start; --i) {\n      code = path.charCodeAt(i);\n      if (code === 47/*/*/) {\n        // If we reached a path separator that was not part of a set of path\n        // separators at the end of the string, stop now\n        if (!matchedSlash) {\n          startPart = i + 1;\n          break;\n        }\n        continue;\n      }\n      if (end === -1) {\n        // We saw the first non-path separator, mark this as the end of our\n        // extension\n        matchedSlash = false;\n        end = i + 1;\n      }\n      if (code === 46/*.*/) {\n        // If this is our first dot, mark it as the start of our extension\n        if (startDot === -1)\n          startDot = i;\n        else if (preDotState !== 1)\n          preDotState = 1;\n      } else if (startDot !== -1) {\n        // We saw a non-dot and non-path separator before our dot, so we should\n        // have a good chance at having a non-empty extension\n        preDotState = -1;\n      }\n    }\n\n    if (startDot === -1 ||\n        end === -1 ||\n        // We saw a non-dot character immediately before the dot\n        preDotState === 0 ||\n        // The (right-most) trimmed path component is exactly '..'\n        (preDotState === 1 &&\n         startDot === end - 1 &&\n         startDot === startPart + 1)) {\n      if (end !== -1) {\n        if (startPart === 0 && isAbsolute)\n          ret.base = ret.name = path.slice(1, end);\n        else\n          ret.base = ret.name = path.slice(startPart, end);\n      }\n    } else {\n      if (startPart === 0 && isAbsolute) {\n        ret.name = path.slice(1, startDot);\n        ret.base = path.slice(1, end);\n      } else {\n        ret.name = path.slice(startPart, startDot);\n        ret.base = path.slice(startPart, end);\n      }\n      ret.ext = path.slice(startDot, end);\n    }\n\n    if (startPart > 0)\n      ret.dir = path.slice(0, startPart - 1);\n    else if (isAbsolute)\n      ret.dir = '/';\n\n    return ret;\n  },\n\n\n  sep: '/',\n  delimiter: ':',\n  posix: null\n};\n\n\nmodule.exports = posix;\n","var root = require('./_root');\n\n/**\n * Gets the timestamp of the number of milliseconds that have elapsed since\n * the Unix epoch (1 January 1970 00:00:00 UTC).\n *\n * @static\n * @memberOf _\n * @since 2.4.0\n * @category Date\n * @returns {number} Returns the timestamp.\n * @example\n *\n * _.defer(function(stamp) {\n *   console.log(_.now() - stamp);\n * }, _.now());\n * // => Logs the number of milliseconds it took for the deferred invocation.\n */\nvar now = function() {\n  return root.Date.now();\n};\n\nmodule.exports = now;\n","'use strict';\nvar $ = require('../internals/export');\nvar forEach = require('../internals/array-for-each');\n\n// `Array.prototype.forEach` method\n// https://tc39.es/ecma262/#sec-array.prototype.foreach\n// eslint-disable-next-line es/no-array-prototype-foreach -- safe\n$({ target: 'Array', proto: true, forced: [].forEach !== forEach }, {\n  forEach: forEach\n});\n","exports.nextTick = function nextTick(fn) {\n    var args = Array.prototype.slice.call(arguments);\n    args.shift();\n    setTimeout(function () {\n        fn.apply(null, args);\n    }, 0);\n};\n\nexports.platform = exports.arch = \nexports.execPath = exports.title = 'browser';\nexports.pid = 1;\nexports.browser = true;\nexports.env = {};\nexports.argv = [];\n\nexports.binding = function (name) {\n\tthrow new Error('No such module. (Possibly not yet loaded)')\n};\n\n(function () {\n    var cwd = '/';\n    var path;\n    exports.cwd = function () { return cwd };\n    exports.chdir = function (dir) {\n        if (!path) path = require('path');\n        cwd = path.resolve(dir, cwd);\n    };\n})();\n\nexports.exit = exports.kill = \nexports.umask = exports.dlopen = \nexports.uptime = exports.memoryUsage = \nexports.uvCounters = function() {};\nexports.features = {};\n","/**\n * Hooks allow for injecting functions that must all complete in order before finishing\n * They will execute in parallel but all must finish before continuing\n * Functions may return a promise if they are async.\n * @param {any} context scope of this\n * @example this.content = new EPUBJS.Hook(this);\n */\nclass Hook {\n\tconstructor(context){\n\t\tthis.context = context || this;\n\t\tthis.hooks = [];\n\t}\n\n\t/**\n\t * Adds a function to be run before a hook completes\n\t * @example this.content.register(function(){...});\n\t */\n\tregister(){\n\t\tfor(var i = 0; i < arguments.length; ++i) {\n\t\t\tif (typeof arguments[i]  === \"function\") {\n\t\t\t\tthis.hooks.push(arguments[i]);\n\t\t\t} else {\n\t\t\t\t// unpack array\n\t\t\t\tfor(var j = 0; j < arguments[i].length; ++j) {\n\t\t\t\t\tthis.hooks.push(arguments[i][j]);\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\t}\n\n\t/**\n\t * Removes a function\n\t * @example this.content.deregister(function(){...});\n\t */\n\tderegister(func){\n\t\tlet hook;\n\t\tfor (let i = 0; i < this.hooks.length; i++) {\n\t\t\thook = this.hooks[i];\n\t\t\tif (hook === func) {\n\t\t\t\tthis.hooks.splice(i, 1);\n\t\t\t\tbreak;\n\t\t\t}\n\t\t}\n\t}\n\n\t/**\n\t * Triggers a hook to run all functions\n\t * @example this.content.trigger(args).then(function(){...});\n\t */\n\ttrigger(){\n\t\tvar args = arguments;\n\t\tvar context = this.context;\n\t\tvar promises = [];\n\n\t\tthis.hooks.forEach(function(task) {\n\t\t\ttry {\n\t\t\t\tvar executing = task.apply(context, args);\n\t\t\t} catch (err) {\n\t\t\t\tconsole.log(err);\n\t\t\t}\n\n\t\t\tif(executing && typeof executing[\"then\"] === \"function\") {\n\t\t\t\t// Task is a function that returns a promise\n\t\t\t\tpromises.push(executing);\n\t\t\t}\n\t\t\t// Otherwise Task resolves immediately, continue\n\t\t});\n\n\n\t\treturn Promise.all(promises);\n\t}\n\n\t// Adds a function to be run before a hook completes\n\tlist(){\n\t\treturn this.hooks;\n\t}\n\n\tclear(){\n\t\treturn this.hooks = [];\n\t}\n}\nexport default Hook;\n","/** Used to match a single whitespace character. */\nvar reWhitespace = /\\s/;\n\n/**\n * Used by `_.trim` and `_.trimEnd` to get the index of the last non-whitespace\n * character of `string`.\n *\n * @private\n * @param {string} string The string to inspect.\n * @returns {number} Returns the index of the last non-whitespace character.\n */\nfunction trimmedEndIndex(string) {\n  var index = string.length;\n\n  while (index-- && reWhitespace.test(string.charAt(index))) {}\n  return index;\n}\n\nmodule.exports = trimmedEndIndex;\n","import EventEmitter from \"event-emitter\";\nimport {isNumber, prefixed, borders, defaults} from \"./utils/core\";\nimport EpubCFI from \"./epubcfi\";\nimport Mapping from \"./mapping\";\nimport {replaceLinks} from \"./utils/replacements\";\nimport { EPUBJS_VERSION, EVENTS, DOM_EVENTS } from \"./utils/constants\";\n\nconst hasNavigator = typeof (navigator) !== \"undefined\";\n\nconst isChrome = hasNavigator && /Chrome/.test(navigator.userAgent);\nconst isWebkit = hasNavigator && !isChrome && /AppleWebKit/.test(navigator.userAgent);\n\nconst ELEMENT_NODE = 1;\nconst TEXT_NODE = 3;\n\n/**\n\t* Handles DOM manipulation, queries and events for View contents\n\t* @class\n\t* @param {document} doc Document\n\t* @param {element} content Parent Element (typically Body)\n\t* @param {string} cfiBase Section component of CFIs\n\t* @param {number} sectionIndex Index in Spine of Conntent's Section\n\t*/\nclass Contents {\n\tconstructor(doc, content, cfiBase, sectionIndex) {\n\t\t// Blank Cfi for Parsing\n\t\tthis.epubcfi = new EpubCFI();\n\n\t\tthis.document = doc;\n\t\tthis.documentElement =  this.document.documentElement;\n\t\tthis.content = content || this.document.body;\n\t\tthis.window = this.document.defaultView;\n\n\t\tthis._size = {\n\t\t\twidth: 0,\n\t\t\theight: 0\n\t\t};\n\n\t\tthis.sectionIndex = sectionIndex || 0;\n\t\tthis.cfiBase = cfiBase || \"\";\n\n\t\tthis.epubReadingSystem(\"epub.js\", EPUBJS_VERSION);\n\t\tthis.called = 0;\n\t\tthis.active = true;\n\t\tthis.listeners();\n\t}\n\n\t/**\n\t\t* Get DOM events that are listened for and passed along\n\t\t*/\n\tstatic get listenedEvents() {\n\t\treturn DOM_EVENTS;\n\t}\n\n\t/**\n\t\t* Get or Set width\n\t\t* @param {number} [w]\n\t\t* @returns {number} width\n\t\t*/\n\twidth(w) {\n\t\t// var frame = this.documentElement;\n\t\tvar frame = this.content;\n\n\t\tif (w && isNumber(w)) {\n\t\t\tw = w + \"px\";\n\t\t}\n\n\t\tif (w) {\n\t\t\tframe.style.width = w;\n\t\t\t// this.content.style.width = w;\n\t\t}\n\n\t\treturn parseInt(this.window.getComputedStyle(frame)[\"width\"]);\n\n\n\t}\n\n\t/**\n\t\t* Get or Set height\n\t\t* @param {number} [h]\n\t\t* @returns {number} height\n\t\t*/\n\theight(h) {\n\t\t// var frame = this.documentElement;\n\t\tvar frame = this.content;\n\n\t\tif (h && isNumber(h)) {\n\t\t\th = h + \"px\";\n\t\t}\n\n\t\tif (h) {\n\t\t\tframe.style.height = h;\n\t\t\t// this.content.style.height = h;\n\t\t}\n\n\t\treturn parseInt(this.window.getComputedStyle(frame)[\"height\"]);\n\n\t}\n\n\t/**\n\t\t* Get or Set width of the contents\n\t\t* @param {number} [w]\n\t\t* @returns {number} width\n\t\t*/\n\tcontentWidth(w) {\n\n\t\tvar content = this.content || this.document.body;\n\n\t\tif (w && isNumber(w)) {\n\t\t\tw = w + \"px\";\n\t\t}\n\n\t\tif (w) {\n\t\t\tcontent.style.width = w;\n\t\t}\n\n\t\treturn parseInt(this.window.getComputedStyle(content)[\"width\"]);\n\n\n\t}\n\n\t/**\n\t\t* Get or Set height of the contents\n\t\t* @param {number} [h]\n\t\t* @returns {number} height\n\t\t*/\n\tcontentHeight(h) {\n\n\t\tvar content = this.content || this.document.body;\n\n\t\tif (h && isNumber(h)) {\n\t\t\th = h + \"px\";\n\t\t}\n\n\t\tif (h) {\n\t\t\tcontent.style.height = h;\n\t\t}\n\n\t\treturn parseInt(this.window.getComputedStyle(content)[\"height\"]);\n\n\t}\n\n\t/**\n\t\t* Get the width of the text using Range\n\t\t* @returns {number} width\n\t\t*/\n\ttextWidth() {\n\t\tlet rect;\n\t\tlet width;\n\t\tlet range = this.document.createRange();\n\t\tlet content = this.content || this.document.body;\n\t\tlet border = borders(content);\n\n\t\t// Select the contents of frame\n\t\trange.selectNodeContents(content);\n\n\t\t// get the width of the text content\n\t\trect = range.getBoundingClientRect();\n\t\twidth = rect.width;\n\n\t\tif (border && border.width) {\n\t\t\twidth += border.width;\n\t\t}\n\n\t\treturn Math.round(width);\n\t}\n\n\t/**\n\t\t* Get the height of the text using Range\n\t\t* @returns {number} height\n\t\t*/\n\ttextHeight() {\n\t\tlet rect;\n\t\tlet height;\n\t\tlet range = this.document.createRange();\n\t\tlet content = this.content || this.document.body;\n\n\t\trange.selectNodeContents(content);\n\n\t\trect = range.getBoundingClientRect();\n\t\theight = rect.bottom;\n\n\t\treturn Math.round(height);\n\t}\n\n\t/**\n\t\t* Get documentElement scrollWidth\n\t\t* @returns {number} width\n\t\t*/\n\tscrollWidth() {\n\t\tvar width = this.documentElement.scrollWidth;\n\n\t\treturn width;\n\t}\n\n\t/**\n\t\t* Get documentElement scrollHeight\n\t\t* @returns {number} height\n\t\t*/\n\tscrollHeight() {\n\t\tvar height = this.documentElement.scrollHeight;\n\n\t\treturn height;\n\t}\n\n\t/**\n\t\t* Set overflow css style of the contents\n\t\t* @param {string} [overflow]\n\t\t*/\n\toverflow(overflow) {\n\n\t\tif (overflow) {\n\t\t\tthis.documentElement.style.overflow = overflow;\n\t\t}\n\n\t\treturn this.window.getComputedStyle(this.documentElement)[\"overflow\"];\n\t}\n\n\t/**\n\t\t* Set overflowX css style of the documentElement\n\t\t* @param {string} [overflow]\n\t\t*/\n\toverflowX(overflow) {\n\n\t\tif (overflow) {\n\t\t\tthis.documentElement.style.overflowX = overflow;\n\t\t}\n\n\t\treturn this.window.getComputedStyle(this.documentElement)[\"overflowX\"];\n\t}\n\n\t/**\n\t\t* Set overflowY css style of the documentElement\n\t\t* @param {string} [overflow]\n\t\t*/\n\toverflowY(overflow) {\n\n\t\tif (overflow) {\n\t\t\tthis.documentElement.style.overflowY = overflow;\n\t\t}\n\n\t\treturn this.window.getComputedStyle(this.documentElement)[\"overflowY\"];\n\t}\n\n\t/**\n\t\t* Set Css styles on the contents element (typically Body)\n\t\t* @param {string} property\n\t\t* @param {string} value\n\t\t* @param {boolean} [priority] set as \"important\"\n\t\t*/\n\tcss(property, value, priority) {\n\t\tvar content = this.content || this.document.body;\n\n\t\tif (value) {\n\t\t\tcontent.style.setProperty(property, value, priority ? \"important\" : \"\");\n\t\t} else {\n\t\t\tcontent.style.removeProperty(property);\n\t\t}\n\n\t\treturn this.window.getComputedStyle(content)[property];\n\t}\n\n\t/**\n\t\t* Get or Set the viewport element\n\t\t* @param {object} [options]\n\t\t* @param {string} [options.width]\n\t\t* @param {string} [options.height]\n\t\t* @param {string} [options.scale]\n\t\t* @param {string} [options.minimum]\n\t\t* @param {string} [options.maximum]\n\t\t* @param {string} [options.scalable]\n\t\t*/\n\tviewport(options) {\n\t\tvar _width, _height, _scale, _minimum, _maximum, _scalable;\n\t\t// var width, height, scale, minimum, maximum, scalable;\n\t\tvar $viewport = this.document.querySelector(\"meta[name='viewport']\");\n\t\tvar parsed = {\n\t\t\t\"width\": undefined,\n\t\t\t\"height\": undefined,\n\t\t\t\"scale\": undefined,\n\t\t\t\"minimum\": undefined,\n\t\t\t\"maximum\": undefined,\n\t\t\t\"scalable\": undefined\n\t\t};\n\t\tvar newContent = [];\n\t\tvar settings = {};\n\n\t\t/*\n\t\t* check for the viewport size\n\t\t* <meta name=\"viewport\" content=\"width=1024,height=697\" />\n\t\t*/\n\t\tif($viewport && $viewport.hasAttribute(\"content\")) {\n\t\t\tlet content = $viewport.getAttribute(\"content\");\n\t\t\tlet _width = content.match(/width\\s*=\\s*([^,]*)/);\n\t\t\tlet _height = content.match(/height\\s*=\\s*([^,]*)/);\n\t\t\tlet _scale = content.match(/initial-scale\\s*=\\s*([^,]*)/);\n\t\t\tlet _minimum = content.match(/minimum-scale\\s*=\\s*([^,]*)/);\n\t\t\tlet _maximum = content.match(/maximum-scale\\s*=\\s*([^,]*)/);\n\t\t\tlet _scalable = content.match(/user-scalable\\s*=\\s*([^,]*)/);\n\n\t\t\tif(_width && _width.length && typeof _width[1] !== \"undefined\"){\n\t\t\t\tparsed.width = _width[1];\n\t\t\t}\n\t\t\tif(_height && _height.length && typeof _height[1] !== \"undefined\"){\n\t\t\t\tparsed.height = _height[1];\n\t\t\t}\n\t\t\tif(_scale && _scale.length && typeof _scale[1] !== \"undefined\"){\n\t\t\t\tparsed.scale = _scale[1];\n\t\t\t}\n\t\t\tif(_minimum && _minimum.length && typeof _minimum[1] !== \"undefined\"){\n\t\t\t\tparsed.minimum = _minimum[1];\n\t\t\t}\n\t\t\tif(_maximum && _maximum.length && typeof _maximum[1] !== \"undefined\"){\n\t\t\t\tparsed.maximum = _maximum[1];\n\t\t\t}\n\t\t\tif(_scalable && _scalable.length && typeof _scalable[1] !== \"undefined\"){\n\t\t\t\tparsed.scalable = _scalable[1];\n\t\t\t}\n\t\t}\n\n\t\tsettings = defaults(options || {}, parsed);\n\n\t\tif (options) {\n\t\t\tif (settings.width) {\n\t\t\t\tnewContent.push(\"width=\" + settings.width);\n\t\t\t}\n\n\t\t\tif (settings.height) {\n\t\t\t\tnewContent.push(\"height=\" + settings.height);\n\t\t\t}\n\n\t\t\tif (settings.scale) {\n\t\t\t\tnewContent.push(\"initial-scale=\" + settings.scale);\n\t\t\t}\n\n\t\t\tif (settings.scalable === \"no\") {\n\t\t\t\tnewContent.push(\"minimum-scale=\" + settings.scale);\n\t\t\t\tnewContent.push(\"maximum-scale=\" + settings.scale);\n\t\t\t\tnewContent.push(\"user-scalable=\" + settings.scalable);\n\t\t\t} else {\n\n\t\t\t\tif (settings.scalable) {\n\t\t\t\t\tnewContent.push(\"user-scalable=\" + settings.scalable);\n\t\t\t\t}\n\n\t\t\t\tif (settings.minimum) {\n\t\t\t\t\tnewContent.push(\"minimum-scale=\" + settings.minimum);\n\t\t\t\t}\n\n\t\t\t\tif (settings.maximum) {\n\t\t\t\t\tnewContent.push(\"minimum-scale=\" + settings.maximum);\n\t\t\t\t}\n\t\t\t}\n\n\t\t\tif (!$viewport) {\n\t\t\t\t$viewport = this.document.createElement(\"meta\");\n\t\t\t\t$viewport.setAttribute(\"name\", \"viewport\");\n\t\t\t\tthis.document.querySelector(\"head\").appendChild($viewport);\n\t\t\t}\n\n\t\t\t$viewport.setAttribute(\"content\", newContent.join(\", \"));\n\n\t\t\tthis.window.scrollTo(0, 0);\n\t\t}\n\n\n\t\treturn settings;\n\t}\n\n\t/**\n\t * Event emitter for when the contents has expanded\n\t * @private\n\t */\n\texpand() {\n\t\tthis.emit(EVENTS.CONTENTS.EXPAND);\n\t}\n\n\t/**\n\t * Add DOM listeners\n\t * @private\n\t */\n\tlisteners() {\n\t\tthis.imageLoadListeners();\n\n\t\tthis.mediaQueryListeners();\n\n\t\t// this.fontLoadListeners();\n\n\t\tthis.addEventListeners();\n\n\t\tthis.addSelectionListeners();\n\n\t\t// this.transitionListeners();\n\n\t\tif (typeof ResizeObserver === \"undefined\") {\n\t\t\tthis.resizeListeners();\n\t\t\tthis.visibilityListeners();\n\t\t} else {\n\t\t\tthis.resizeObservers();\n\t\t}\n\n\t\t// this.mutationObservers();\n\n\t\tthis.linksHandler();\n\t}\n\n\t/**\n\t * Remove DOM listeners\n\t * @private\n\t */\n\tremoveListeners() {\n\n\t\tthis.removeEventListeners();\n\n\t\tthis.removeSelectionListeners();\n\n\t\tif (this.observer) {\n\t\t\tthis.observer.disconnect();\n\t\t}\n\n\t\tclearTimeout(this.expanding);\n\t}\n\n\t/**\n\t * Check if size of contents has changed and\n\t * emit 'resize' event if it has.\n\t * @private\n\t */\n\tresizeCheck() {\n\t\tlet width = this.textWidth();\n\t\tlet height = this.textHeight();\n\n\t\tif (width != this._size.width || height != this._size.height) {\n\n\t\t\tthis._size = {\n\t\t\t\twidth: width,\n\t\t\t\theight: height\n\t\t\t};\n\n\t\t\tthis.onResize && this.onResize(this._size);\n\t\t\tthis.emit(EVENTS.CONTENTS.RESIZE, this._size);\n\t\t}\n\t}\n\n\t/**\n\t * Poll for resize detection\n\t * @private\n\t */\n\tresizeListeners() {\n\t\tvar width, height;\n\t\t// Test size again\n\t\tclearTimeout(this.expanding);\n\t\trequestAnimationFrame(this.resizeCheck.bind(this));\n\t\tthis.expanding = setTimeout(this.resizeListeners.bind(this), 350);\n\t}\n\n\t/**\n\t * Listen for visibility of tab to change\n\t * @private\n\t */\n\tvisibilityListeners() {\n\t\tdocument.addEventListener(\"visibilitychange\", () => {\n\t\t\tif (document.visibilityState === \"visible\" && this.active === false) {\n\t\t\t\tthis.active = true;\n\t\t\t\tthis.resizeListeners();\n\t\t\t} else {\n\t\t\t\tthis.active = false;\n\t\t\t\tclearTimeout(this.expanding);\n\t\t\t}\n\t\t});\n\t}\n\n\t/**\n\t * Use css transitions to detect resize\n\t * @private\n\t */\n\ttransitionListeners() {\n\t\tlet body = this.content;\n\n\t\tbody.style['transitionProperty'] = \"font, font-size, font-size-adjust, font-stretch, font-variation-settings, font-weight, width, height\";\n\t\tbody.style['transitionDuration'] = \"0.001ms\";\n\t\tbody.style['transitionTimingFunction'] = \"linear\";\n\t\tbody.style['transitionDelay'] = \"0\";\n\n\t\tthis._resizeCheck = this.resizeCheck.bind(this);\n\t\tthis.document.addEventListener('transitionend', this._resizeCheck);\n\t}\n\n\t/**\n\t * Listen for media query changes and emit 'expand' event\n\t * Adapted from: https://github.com/tylergaw/media-query-events/blob/master/js/mq-events.js\n\t * @private\n\t */\n\tmediaQueryListeners() {\n\t\tvar sheets = this.document.styleSheets;\n\t\tvar mediaChangeHandler = function(m){\n\t\t\tif(m.matches && !this._expanding) {\n\t\t\t\tsetTimeout(this.expand.bind(this), 1);\n\t\t\t}\n\t\t}.bind(this);\n\n\t\tfor (var i = 0; i < sheets.length; i += 1) {\n\t\t\tvar rules;\n\t\t\t// Firefox errors if we access cssRules cross-domain\n\t\t\ttry {\n\t\t\t\trules = sheets[i].cssRules;\n\t\t\t} catch (e) {\n\t\t\t\treturn;\n\t\t\t}\n\t\t\tif(!rules) return; // Stylesheets changed\n\t\t\tfor (var j = 0; j < rules.length; j += 1) {\n\t\t\t\t//if (rules[j].constructor === CSSMediaRule) {\n\t\t\t\tif(rules[j].media){\n\t\t\t\t\tvar mql = this.window.matchMedia(rules[j].media.mediaText);\n\t\t\t\t\tmql.addListener(mediaChangeHandler);\n\t\t\t\t\t//mql.onchange = mediaChangeHandler;\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\t}\n\n\t/**\n\t * Use ResizeObserver to listen for changes in the DOM and check for resize\n\t * @private\n\t */\n\tresizeObservers() {\n\t\t// create an observer instance\n\t\tthis.observer = new ResizeObserver((e) => {\n\t\t\trequestAnimationFrame(this.resizeCheck.bind(this));\n\t\t});\n\n\t\t// pass in the target node\n\t\tthis.observer.observe(this.document.documentElement);\n\t}\n\n\t/**\n\t * Use MutationObserver to listen for changes in the DOM and check for resize\n\t * @private\n\t */\n\tmutationObservers() {\n\t\t// create an observer instance\n\t\tthis.observer = new MutationObserver((mutations) => {\n\t\t\tthis.resizeCheck();\n\t\t});\n\n\t\t// configuration of the observer:\n\t\tlet config = { attributes: true, childList: true, characterData: true, subtree: true };\n\n\t\t// pass in the target node, as well as the observer options\n\t\tthis.observer.observe(this.document, config);\n\t}\n\n\t/**\n\t * Test if images are loaded or add listener for when they load\n\t * @private\n\t */\n\timageLoadListeners() {\n\t\tvar images = this.document.querySelectorAll(\"img\");\n\t\tvar img;\n\t\tfor (var i = 0; i < images.length; i++) {\n\t\t\timg = images[i];\n\n\t\t\tif (typeof img.naturalWidth !== \"undefined\" &&\n\t\t\t\t\timg.naturalWidth === 0) {\n\t\t\t\timg.onload = this.expand.bind(this);\n\t\t\t}\n\t\t}\n\t}\n\n\t/**\n\t * Listen for font load and check for resize when loaded\n\t * @private\n\t */\n\tfontLoadListeners() {\n\t\tif (!this.document || !this.document.fonts) {\n\t\t\treturn;\n\t\t}\n\n\t\tthis.document.fonts.ready.then(function () {\n\t\t\tthis.resizeCheck();\n\t\t}.bind(this));\n\n\t}\n\n\t/**\n\t * Get the documentElement\n\t * @returns {element} documentElement\n\t */\n\troot() {\n\t\tif(!this.document) return null;\n\t\treturn this.document.documentElement;\n\t}\n\n\t/**\n\t * Get the location offset of a EpubCFI or an #id\n\t * @param {string | EpubCFI} target\n\t * @param {string} [ignoreClass] for the cfi\n\t * @returns { {left: Number, top: Number }\n\t */\n\tlocationOf(target, ignoreClass) {\n\t\tvar position;\n\t\tvar targetPos = {\"left\": 0, \"top\": 0};\n\n\t\tif(!this.document) return targetPos;\n\n\t\tif(this.epubcfi.isCfiString(target)) {\n\t\t\tlet range = new EpubCFI(target).toRange(this.document, ignoreClass);\n\n\t\t\tif(range) {\n\t\t\t\ttry {\n\t\t\t\t\tif (!range.endContainer ||\n\t\t\t\t\t\t(range.startContainer == range.endContainer\n\t\t\t\t\t\t&& range.startOffset == range.endOffset)) {\n\t\t\t\t\t\t// If the end for the range is not set, it results in collapsed becoming\n\t\t\t\t\t\t// true. This in turn leads to inconsistent behaviour when calling\n\t\t\t\t\t\t// getBoundingRect. Wrong bounds lead to the wrong page being displayed.\n\t\t\t\t\t\t// https://developer.microsoft.com/en-us/microsoft-edge/platform/issues/15684911/\n\t\t\t\t\t\tlet pos = range.startContainer.textContent.indexOf(\" \", range.startOffset);\n\t\t\t\t\t\tif (pos == -1) {\n\t\t\t\t\t\t\tpos = range.startContainer.textContent.length;\n\t\t\t\t\t\t}\n\t\t\t\t\t\trange.setEnd(range.startContainer, pos);\n\t\t\t\t\t}\n\t\t\t\t} catch (e) {\n\t\t\t\t\tconsole.error(\"setting end offset to start container length failed\", e);\n\t\t\t\t}\n\n\t\t\t\tif (range.startContainer.nodeType === Node.ELEMENT_NODE) {\n\t\t\t\t\tposition = range.startContainer.getBoundingClientRect();\n\t\t\t\t\ttargetPos.left = position.left;\n\t\t\t\t\ttargetPos.top = position.top;\n\t\t\t\t} else {\n\t\t\t\t\t// Webkit does not handle collapsed range bounds correctly\n\t\t\t\t\t// https://bugs.webkit.org/show_bug.cgi?id=138949\n\n\t\t\t\t\t// Construct a new non-collapsed range\n\t\t\t\t\tif (isWebkit) {\n\t\t\t\t\t\tlet container = range.startContainer;\n\t\t\t\t\t\tlet newRange = new Range();\n\t\t\t\t\t\ttry {\n\t\t\t\t\t\t\tif (container.nodeType === ELEMENT_NODE) {\n\t\t\t\t\t\t\t\tposition = container.getBoundingClientRect();\n\t\t\t\t\t\t\t} else if (range.startOffset + 2 < container.length) {\n\t\t\t\t\t\t\t\tnewRange.setStart(container, range.startOffset);\n\t\t\t\t\t\t\t\tnewRange.setEnd(container, range.startOffset + 2);\n\t\t\t\t\t\t\t\tposition = newRange.getBoundingClientRect();\n\t\t\t\t\t\t\t} else if (range.startOffset - 2 > 0) {\n\t\t\t\t\t\t\t\tnewRange.setStart(container, range.startOffset - 2);\n\t\t\t\t\t\t\t\tnewRange.setEnd(container, range.startOffset);\n\t\t\t\t\t\t\t\tposition = newRange.getBoundingClientRect();\n\t\t\t\t\t\t\t} else { // empty, return the parent element\n\t\t\t\t\t\t\t\tposition = container.parentNode.getBoundingClientRect();\n\t\t\t\t\t\t\t}\n\t\t\t\t\t\t} catch (e) {\n\t\t\t\t\t\t\tconsole.error(e, e.stack);\n\t\t\t\t\t\t}\n\t\t\t\t\t} else {\n\t\t\t\t\t\tposition = range.getBoundingClientRect();\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\n\t\t} else if(typeof target === \"string\" &&\n\t\t\ttarget.indexOf(\"#\") > -1) {\n\n\t\t\tlet id = target.substring(target.indexOf(\"#\")+1);\n\t\t\tlet el = this.document.getElementById(id);\n\t\t\tif(el) {\n\t\t\t\tif (isWebkit) {\n\t\t\t\t\t// Webkit reports incorrect bounding rects in Columns\n\t\t\t\t\tlet newRange = new Range();\n\t\t\t\t\tnewRange.selectNode(el);\n\t\t\t\t\tposition = newRange.getBoundingClientRect();\n\t\t\t\t} else {\n\t\t\t\t\tposition = el.getBoundingClientRect();\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\n\t\tif (position) {\n\t\t\ttargetPos.left = position.left;\n\t\t\ttargetPos.top = position.top;\n\t\t}\n\n\t\treturn targetPos;\n\t}\n\n\t/**\n\t * Append a stylesheet link to the document head\n\t * @param {string} src url\n\t */\n\taddStylesheet(src) {\n\t\treturn new Promise(function(resolve, reject){\n\t\t\tvar $stylesheet;\n\t\t\tvar ready = false;\n\n\t\t\tif(!this.document) {\n\t\t\t\tresolve(false);\n\t\t\t\treturn;\n\t\t\t}\n\n\t\t\t// Check if link already exists\n\t\t\t$stylesheet = this.document.querySelector(\"link[href='\"+src+\"']\");\n\t\t\tif ($stylesheet) {\n\t\t\t\tresolve(true);\n\t\t\t\treturn; // already present\n\t\t\t}\n\n\t\t\t$stylesheet = this.document.createElement(\"link\");\n\t\t\t$stylesheet.type = \"text/css\";\n\t\t\t$stylesheet.rel = \"stylesheet\";\n\t\t\t$stylesheet.href = src;\n\t\t\t$stylesheet.onload = $stylesheet.onreadystatechange = function() {\n\t\t\t\tif ( !ready && (!this.readyState || this.readyState == \"complete\") ) {\n\t\t\t\t\tready = true;\n\t\t\t\t\t// Let apply\n\t\t\t\t\tsetTimeout(() => {\n\t\t\t\t\t\tresolve(true);\n\t\t\t\t\t}, 1);\n\t\t\t\t}\n\t\t\t};\n\n\t\t\tthis.document.head.appendChild($stylesheet);\n\n\t\t}.bind(this));\n\t}\n\n\t_getStylesheetNode(key) {\n\t\tvar styleEl;\n\t\tkey = \"epubjs-inserted-css-\" + (key || '');\n\n\t\tif(!this.document) return false;\n\n\t\t// Check if link already exists\n\t\tstyleEl = this.document.getElementById(key);\n\t\tif (!styleEl) {\n\t\t\tstyleEl = this.document.createElement(\"style\");\n\t\t\tstyleEl.id = key;\n\t\t\t// Append style element to head\n\t\t\tthis.document.head.appendChild(styleEl);\n\t\t}\n\t\treturn styleEl;\n\t}\n\n\t/**\n\t * Append stylesheet css\n\t * @param {string} serializedCss\n\t * @param {string} key If the key is the same, the CSS will be replaced instead of inserted\n\t */\n\taddStylesheetCss(serializedCss, key) {\n\t\tif(!this.document || !serializedCss) return false;\n\n\t\tvar styleEl;\n\t\tstyleEl = this._getStylesheetNode(key);\n\t\tstyleEl.innerHTML = serializedCss;\n\n\t\treturn true;\n\t}\n\n\t/**\n\t * Append stylesheet rules to a generate stylesheet\n\t * Array: https://developer.mozilla.org/en-US/docs/Web/API/CSSStyleSheet/insertRule\n\t * Object: https://github.com/desirable-objects/json-to-css\n\t * @param {array | object} rules\n\t * @param {string} key If the key is the same, the CSS will be replaced instead of inserted\n\t */\n\taddStylesheetRules(rules, key) {\n\t\tvar styleSheet;\n\n\t\tif(!this.document || !rules || rules.length === 0) return;\n\n\t\t// Grab style sheet\n\t\tstyleSheet = this._getStylesheetNode(key).sheet;\n\n\t\tif (Object.prototype.toString.call(rules) === \"[object Array]\") {\n\t\t\tfor (var i = 0, rl = rules.length; i < rl; i++) {\n\t\t\t\tvar j = 1, rule = rules[i], selector = rules[i][0], propStr = \"\";\n\t\t\t\t// If the second argument of a rule is an array of arrays, correct our variables.\n\t\t\t\tif (Object.prototype.toString.call(rule[1][0]) === \"[object Array]\") {\n\t\t\t\t\trule = rule[1];\n\t\t\t\t\tj = 0;\n\t\t\t\t}\n\n\t\t\t\tfor (var pl = rule.length; j < pl; j++) {\n\t\t\t\t\tvar prop = rule[j];\n\t\t\t\t\tpropStr += prop[0] + \":\" + prop[1] + (prop[2] ? \" !important\" : \"\") + \";\\n\";\n\t\t\t\t}\n\n\t\t\t\t// Insert CSS Rule\n\t\t\t\tstyleSheet.insertRule(selector + \"{\" + propStr + \"}\", styleSheet.cssRules.length);\n\t\t\t}\n\t\t} else {\n\t\t\tconst selectors = Object.keys(rules);\n\t\t\tselectors.forEach((selector) => {\n\t\t\t\tconst definition = rules[selector];\n\t\t\t\tif (Array.isArray(definition)) {\n\t\t\t\t\tdefinition.forEach((item) => {\n\t\t\t\t\t\tconst _rules = Object.keys(item);\n\t\t\t\t\t\tconst result = _rules.map((rule) => {\n\t\t\t\t\t\t\treturn `${rule}:${item[rule]}`;\n\t\t\t\t\t\t}).join(';');\n\t\t\t\t\t\tstyleSheet.insertRule(`${selector}{${result}}`, styleSheet.cssRules.length);\n\t\t\t\t\t});\n\t\t\t\t} else {\n\t\t\t\t\tconst _rules = Object.keys(definition);\n\t\t\t\t\tconst result = _rules.map((rule) => {\n\t\t\t\t\t\treturn `${rule}:${definition[rule]}`;\n\t\t\t\t\t}).join(';');\n\t\t\t\t\tstyleSheet.insertRule(`${selector}{${result}}`, styleSheet.cssRules.length);\n\t\t\t\t}\n\t\t\t});\n\t\t}\n\t}\n\n\t/**\n\t * Append a script tag to the document head\n\t * @param {string} src url\n\t * @returns {Promise} loaded\n\t */\n\taddScript(src) {\n\n\t\treturn new Promise(function(resolve, reject){\n\t\t\tvar $script;\n\t\t\tvar ready = false;\n\n\t\t\tif(!this.document) {\n\t\t\t\tresolve(false);\n\t\t\t\treturn;\n\t\t\t}\n\n\t\t\t$script = this.document.createElement(\"script\");\n\t\t\t$script.type = \"text/javascript\";\n\t\t\t$script.async = true;\n\t\t\t$script.src = src;\n\t\t\t$script.onload = $script.onreadystatechange = function() {\n\t\t\t\tif ( !ready && (!this.readyState || this.readyState == \"complete\") ) {\n\t\t\t\t\tready = true;\n\t\t\t\t\tsetTimeout(function(){\n\t\t\t\t\t\tresolve(true);\n\t\t\t\t\t}, 1);\n\t\t\t\t}\n\t\t\t};\n\n\t\t\tthis.document.head.appendChild($script);\n\n\t\t}.bind(this));\n\t}\n\n\t/**\n\t * Add a class to the contents container\n\t * @param {string} className\n\t */\n\taddClass(className) {\n\t\tvar content;\n\n\t\tif(!this.document) return;\n\n\t\tcontent = this.content || this.document.body;\n\n\t\tif (content) {\n\t\t\tcontent.classList.add(className);\n\t\t}\n\n\t}\n\n\t/**\n\t * Remove a class from the contents container\n\t * @param {string} removeClass\n\t */\n\tremoveClass(className) {\n\t\tvar content;\n\n\t\tif(!this.document) return;\n\n\t\tcontent = this.content || this.document.body;\n\n\t\tif (content) {\n\t\t\tcontent.classList.remove(className);\n\t\t}\n\n\t}\n\n\t/**\n\t * Add DOM event listeners\n\t * @private\n\t */\n\taddEventListeners(){\n\t\tif(!this.document) {\n\t\t\treturn;\n\t\t}\n\n\t\tthis._triggerEvent = this.triggerEvent.bind(this);\n\n\t\tDOM_EVENTS.forEach(function(eventName){\n\t\t\tthis.document.addEventListener(eventName, this._triggerEvent, { passive: true });\n\t\t}, this);\n\n\t}\n\n\t/**\n\t * Remove DOM event listeners\n\t * @private\n\t */\n\tremoveEventListeners(){\n\t\tif(!this.document) {\n\t\t\treturn;\n\t\t}\n\t\tDOM_EVENTS.forEach(function(eventName){\n\t\t\tthis.document.removeEventListener(eventName, this._triggerEvent, { passive: true });\n\t\t}, this);\n\t\tthis._triggerEvent = undefined;\n\t}\n\n\t/**\n\t * Emit passed browser events\n\t * @private\n\t */\n\ttriggerEvent(e){\n\t\tthis.emit(e.type, e);\n\t}\n\n\t/**\n\t * Add listener for text selection\n\t * @private\n\t */\n\taddSelectionListeners(){\n\t\tif(!this.document) {\n\t\t\treturn;\n\t\t}\n\t\tthis._onSelectionChange = this.onSelectionChange.bind(this);\n\t\tthis.document.addEventListener(\"selectionchange\", this._onSelectionChange, { passive: true });\n\t}\n\n\t/**\n\t * Remove listener for text selection\n\t * @private\n\t */\n\tremoveSelectionListeners(){\n\t\tif(!this.document) {\n\t\t\treturn;\n\t\t}\n\t\tthis.document.removeEventListener(\"selectionchange\", this._onSelectionChange, { passive: true });\n\t\tthis._onSelectionChange = undefined;\n\t}\n\n\t/**\n\t * Handle getting text on selection\n\t * @private\n\t */\n\tonSelectionChange(e){\n\t\tif (this.selectionEndTimeout) {\n\t\t\tclearTimeout(this.selectionEndTimeout);\n\t\t}\n\t\tthis.selectionEndTimeout = setTimeout(function() {\n\t\t\tvar selection = this.window.getSelection();\n\t\t\tthis.triggerSelectedEvent(selection);\n\t\t}.bind(this), 250);\n\t}\n\n\t/**\n\t * Emit event on text selection\n\t * @private\n\t */\n\ttriggerSelectedEvent(selection){\n\t\tvar range, cfirange;\n\n\t\tif (selection && selection.rangeCount > 0) {\n\t\t\trange = selection.getRangeAt(0);\n\t\t\tif(!range.collapsed) {\n\t\t\t\t// cfirange = this.section.cfiFromRange(range);\n\t\t\t\tcfirange = new EpubCFI(range, this.cfiBase).toString();\n\t\t\t\tthis.emit(EVENTS.CONTENTS.SELECTED, cfirange);\n\t\t\t\tthis.emit(EVENTS.CONTENTS.SELECTED_RANGE, range);\n\t\t\t}\n\t\t}\n\t}\n\n\t/**\n\t * Get a Dom Range from EpubCFI\n\t * @param {EpubCFI} _cfi\n\t * @param {string} [ignoreClass]\n\t * @returns {Range} range\n\t */\n\trange(_cfi, ignoreClass){\n\t\tvar cfi = new EpubCFI(_cfi);\n\t\treturn cfi.toRange(this.document, ignoreClass);\n\t}\n\n\t/**\n\t * Get an EpubCFI from a Dom Range\n\t * @param {Range} range\n\t * @param {string} [ignoreClass]\n\t * @returns {EpubCFI} cfi\n\t */\n\tcfiFromRange(range, ignoreClass){\n\t\treturn new EpubCFI(range, this.cfiBase, ignoreClass).toString();\n\t}\n\n\t/**\n\t * Get an EpubCFI from a Dom node\n\t * @param {node} node\n\t * @param {string} [ignoreClass]\n\t * @returns {EpubCFI} cfi\n\t */\n\tcfiFromNode(node, ignoreClass){\n\t\treturn new EpubCFI(node, this.cfiBase, ignoreClass).toString();\n\t}\n\n\t// TODO: find where this is used - remove?\n\tmap(layout){\n\t\tvar map = new Mapping(layout);\n\t\treturn map.section();\n\t}\n\n\t/**\n\t * Size the contents to a given width and height\n\t * @param {number} [width]\n\t * @param {number} [height]\n\t */\n\tsize(width, height){\n\t\tvar viewport = { scale: 1.0, scalable: \"no\" };\n\n\t\tthis.layoutStyle(\"scrolling\");\n\n\t\tif (width >= 0) {\n\t\t\tthis.width(width);\n\t\t\tviewport.width = width;\n\t\t\tthis.css(\"padding\", \"0 \"+(width/12)+\"px\");\n\t\t}\n\n\t\tif (height >= 0) {\n\t\t\tthis.height(height);\n\t\t\tviewport.height = height;\n\t\t}\n\n\t\tthis.css(\"margin\", \"0\");\n\t\tthis.css(\"box-sizing\", \"border-box\");\n\n\n\t\tthis.viewport(viewport);\n\t}\n\n\t/**\n\t * Apply columns to the contents for pagination\n\t * @param {number} width\n\t * @param {number} height\n\t * @param {number} columnWidth\n\t * @param {number} gap\n\t */\n\tcolumns(width, height, columnWidth, gap, dir){\n\t\tlet COLUMN_AXIS = prefixed(\"column-axis\");\n\t\tlet COLUMN_GAP = prefixed(\"column-gap\");\n\t\tlet COLUMN_WIDTH = prefixed(\"column-width\");\n\t\tlet COLUMN_FILL = prefixed(\"column-fill\");\n\n\t\tlet writingMode = this.writingMode();\n\t\tlet axis = (writingMode.indexOf(\"vertical\") === 0) ? \"vertical\" : \"horizontal\";\n\n\t\tthis.layoutStyle(\"paginated\");\n\n\t\tif (dir === \"rtl\" && axis === \"horizontal\") {\n\t\t\tthis.direction(dir);\n\t\t}\n\n\t\tthis.width(width);\n\t\tthis.height(height);\n\n\t\t// Deal with Mobile trying to scale to viewport\n\t\tthis.viewport({ width: width, height: height, scale: 1.0, scalable: \"no\" });\n\n\t\t// TODO: inline-block needs more testing\n\t\t// Fixes Safari column cut offs, but causes RTL issues\n\t\t// this.css(\"display\", \"inline-block\");\n\n\t\tthis.css(\"overflow-y\", \"hidden\");\n\t\tthis.css(\"margin\", \"0\", true);\n\n\t\tif (axis === \"vertical\") {\n\t\t\tthis.css(\"padding-top\", (gap / 2) + \"px\", true);\n\t\t\tthis.css(\"padding-bottom\", (gap / 2) + \"px\", true);\n\t\t\tthis.css(\"padding-left\", \"20px\");\n\t\t\tthis.css(\"padding-right\", \"20px\");\n\t\t\tthis.css(COLUMN_AXIS, \"vertical\");\n\t\t} else {\n\t\t\tthis.css(\"padding-top\", \"20px\");\n\t\t\tthis.css(\"padding-bottom\", \"20px\");\n\t\t\tthis.css(\"padding-left\", (gap / 2) + \"px\", true);\n\t\t\tthis.css(\"padding-right\", (gap / 2) + \"px\", true);\n\t\t\tthis.css(COLUMN_AXIS, \"horizontal\");\n\t\t}\n\n\t\tthis.css(\"box-sizing\", \"border-box\");\n\t\tthis.css(\"max-width\", \"inherit\");\n\n\t\tthis.css(COLUMN_FILL, \"auto\");\n\n\t\tthis.css(COLUMN_GAP, gap+\"px\");\n\t\tthis.css(COLUMN_WIDTH, columnWidth+\"px\");\n\n\t\t// Fix glyph clipping in WebKit\n\t\t// https://github.com/futurepress/epub.js/issues/983\n\t\tthis.css(\"-webkit-line-box-contain\", \"block glyphs replaced\");\n\t}\n\n\t/**\n\t * Scale contents from center\n\t * @param {number} scale\n\t * @param {number} offsetX\n\t * @param {number} offsetY\n\t */\n\tscaler(scale, offsetX, offsetY){\n\t\tvar scaleStr = \"scale(\" + scale + \")\";\n\t\tvar translateStr = \"\";\n\t\t// this.css(\"position\", \"absolute\"));\n\t\tthis.css(\"transform-origin\", \"top left\");\n\n\t\tif (offsetX >= 0 || offsetY >= 0) {\n\t\t\ttranslateStr = \" translate(\" + (offsetX || 0 )+ \"px, \" + (offsetY || 0 )+ \"px )\";\n\t\t}\n\n\t\tthis.css(\"transform\", scaleStr + translateStr);\n\t}\n\n\t/**\n\t * Fit contents into a fixed width and height\n\t * @param {number} width\n\t * @param {number} height\n\t */\n\tfit(width, height, section){\n\t\tvar viewport = this.viewport();\n\t\tvar viewportWidth = parseInt(viewport.width);\n\t\tvar viewportHeight = parseInt(viewport.height);\n\t\tvar widthScale = width / viewportWidth;\n\t\tvar heightScale = height / viewportHeight;\n\t\tvar scale = widthScale < heightScale ? widthScale : heightScale;\n\n\t\t// the translate does not work as intended, elements can end up unaligned\n\t\t// var offsetY = (height - (viewportHeight * scale)) / 2;\n\t\t// var offsetX = 0;\n\t\t// if (this.sectionIndex % 2 === 1) {\n\t\t// \toffsetX = width - (viewportWidth * scale);\n\t\t// }\n\n\t\tthis.layoutStyle(\"paginated\");\n\n\t\t// scale needs width and height to be set\n\t\tthis.width(viewportWidth);\n\t\tthis.height(viewportHeight);\n\t\tthis.overflow(\"hidden\");\n\n\t\t// Scale to the correct size\n\t\tthis.scaler(scale, 0, 0);\n\t\t// this.scaler(scale, offsetX > 0 ? offsetX : 0, offsetY);\n\n\t\t// background images are not scaled by transform\n\t\tthis.css(\"background-size\", viewportWidth * scale + \"px \" + viewportHeight * scale + \"px\");\n\n\t\tthis.css(\"background-color\", \"transparent\");\n\t\tif (section && section.properties.includes(\"page-spread-left\")) {\n\t\t\t// set margin since scale is weird\n\t\t\tvar marginLeft = width - (viewportWidth * scale);\n\t\t\tthis.css(\"margin-left\", marginLeft + \"px\");\n\t\t}\n\t}\n\n\t/**\n\t * Set the direction of the text\n\t * @param {string} [dir=\"ltr\"] \"rtl\" | \"ltr\"\n\t */\n\tdirection(dir) {\n\t\tif (this.documentElement) {\n\t\t\tthis.documentElement.style[\"direction\"] = dir;\n\t\t}\n\t}\n\n\tmapPage(cfiBase, layout, start, end, dev) {\n\t\tvar mapping = new Mapping(layout, dev);\n\n\t\treturn mapping.page(this, cfiBase, start, end);\n\t}\n\n\t/**\n\t * Emit event when link in content is clicked\n\t * @private\n\t */\n\tlinksHandler() {\n\t\treplaceLinks(this.content, (href) => {\n\t\t\tthis.emit(EVENTS.CONTENTS.LINK_CLICKED, href);\n\t\t});\n\t}\n\n\t/**\n\t * Set the writingMode of the text\n\t * @param {string} [mode=\"horizontal-tb\"] \"horizontal-tb\" | \"vertical-rl\" | \"vertical-lr\"\n\t */\n\twritingMode(mode) {\n\t\tlet WRITING_MODE = prefixed(\"writing-mode\");\n\n\t\tif (mode && this.documentElement) {\n\t\t\tthis.documentElement.style[WRITING_MODE] = mode;\n\t\t}\n\n\t\treturn this.window.getComputedStyle(this.documentElement)[WRITING_MODE] || '';\n\t}\n\n\t/**\n\t * Set the layoutStyle of the content\n\t * @param {string} [style=\"paginated\"] \"scrolling\" | \"paginated\"\n\t * @private\n\t */\n\tlayoutStyle(style) {\n\n\t\tif (style) {\n\t\t\tthis._layoutStyle = style;\n\t\t\tnavigator.epubReadingSystem.layoutStyle = this._layoutStyle;\n\t\t}\n\n\t\treturn this._layoutStyle || \"paginated\";\n\t}\n\n\t/**\n\t * Add the epubReadingSystem object to the navigator\n\t * @param {string} name\n\t * @param {string} version\n\t * @private\n\t */\n\tepubReadingSystem(name, version) {\n\t\tnavigator.epubReadingSystem = {\n\t\t\tname: name,\n\t\t\tversion: version,\n\t\t\tlayoutStyle: this.layoutStyle(),\n\t\t\thasFeature: function (feature) {\n\t\t\t\tswitch (feature) {\n\t\t\t\t\tcase \"dom-manipulation\":\n\t\t\t\t\t\treturn true;\n\t\t\t\t\tcase \"layout-changes\":\n\t\t\t\t\t\treturn true;\n\t\t\t\t\tcase \"touch-events\":\n\t\t\t\t\t\treturn true;\n\t\t\t\t\tcase \"mouse-events\":\n\t\t\t\t\t\treturn true;\n\t\t\t\t\tcase \"keyboard-events\":\n\t\t\t\t\t\treturn true;\n\t\t\t\t\tcase \"spine-scripting\":\n\t\t\t\t\t\treturn false;\n\t\t\t\t\tdefault:\n\t\t\t\t\t\treturn false;\n\t\t\t\t}\n\t\t\t}\n\t\t};\n\t\treturn navigator.epubReadingSystem;\n\t}\n\n\tdestroy() {\n\t\t// this.document.removeEventListener('transitionend', this._resizeCheck);\n\n\t\tthis.removeListeners();\n\n\t}\n}\n\nEventEmitter(Contents.prototype);\n\nexport default Contents;\n","/** Detect free variable `global` from Node.js. */\nvar freeGlobal = typeof global == 'object' && global && global.Object === Object && global;\n\nmodule.exports = freeGlobal;\n","import path from \"path-webpack\";\n\n/**\n * Creates a Path object for parsing and manipulation of a path strings\n *\n * Uses a polyfill for Nodejs path: https://nodejs.org/api/path.html\n * @param\t{string} pathString\ta url string (relative or absolute)\n * @class\n */\nclass Path {\n\tconstructor(pathString) {\n\t\tvar protocol;\n\t\tvar parsed;\n\n\t\tprotocol = pathString.indexOf(\"://\");\n\t\tif (protocol > -1) {\n\t\t\tpathString = new URL(pathString).pathname;\n\t\t}\n\n\t\tparsed = this.parse(pathString);\n\n\t\tthis.path = pathString;\n\n\t\tif (this.isDirectory(pathString)) {\n\t\t\tthis.directory = pathString;\n\t\t} else {\n\t\t\tthis.directory = parsed.dir + \"/\";\n\t\t}\n\n\t\tthis.filename = parsed.base;\n\t\tthis.extension = parsed.ext.slice(1);\n\n\t}\n\n\t/**\n\t * Parse the path: https://nodejs.org/api/path.html#path_path_parse_path\n\t * @param\t{string} what\n\t * @returns {object}\n\t */\n\tparse (what) {\n\t\treturn path.parse(what);\n\t}\n\n\t/**\n\t * @param\t{string} what\n\t * @returns {boolean}\n\t */\n\tisAbsolute (what) {\n\t\treturn path.isAbsolute(what || this.path);\n\t}\n\n\t/**\n\t * Check if path ends with a directory\n\t * @param\t{string} what\n\t * @returns {boolean}\n\t */\n\tisDirectory (what) {\n\t\treturn (what.charAt(what.length-1) === \"/\");\n\t}\n\n\t/**\n\t * Resolve a path against the directory of the Path\n\t *\n\t * https://nodejs.org/api/path.html#path_path_resolve_paths\n\t * @param\t{string} what\n\t * @returns {string} resolved\n\t */\n\tresolve (what) {\n\t\treturn path.resolve(this.directory, what);\n\t}\n\n\t/**\n\t * Resolve a path relative to the directory of the Path\n\t *\n\t * https://nodejs.org/api/path.html#path_path_relative_from_to\n\t * @param\t{string} what\n\t * @returns {string} relative\n\t */\n\trelative (what) {\n\t\tvar isAbsolute = what && (what.indexOf(\"://\") > -1);\n\n\t\tif (isAbsolute) {\n\t\t\treturn what;\n\t\t}\n\n\t\treturn path.relative(this.directory, what);\n\t}\n\n\tsplitPath(filename) {\n\t\treturn this.splitPathRe.exec(filename).slice(1);\n\t}\n\n\t/**\n\t * Return the path string\n\t * @returns {string} path\n\t */\n\ttoString () {\n\t\treturn this.path;\n\t}\n}\n\nexport default Path;\n","\"use strict\";\n\nvar isValue = require(\"../value/is\");\n\n// prettier-ignore\nvar possibleTypes = { \"object\": true, \"function\": true, \"undefined\": true /* document.all */ };\n\nmodule.exports = function (value) {\n\tif (!isValue(value)) return false;\n\treturn hasOwnProperty.call(possibleTypes, typeof value);\n};\n","\"use strict\";\n\nvar _undefined = require(\"../function/noop\")(); // Support ES3 engines\n\nmodule.exports = function (val) { return val !== _undefined && val !== null; };\n","\"use strict\";\n\nvar isPrototype = require(\"../prototype/is\");\n\nmodule.exports = function (value) {\n\tif (typeof value !== \"function\") return false;\n\n\tif (!hasOwnProperty.call(value, \"length\")) return false;\n\n\ttry {\n\t\tif (typeof value.length !== \"number\") return false;\n\t\tif (typeof value.call !== \"function\") return false;\n\t\tif (typeof value.apply !== \"function\") return false;\n\t} catch (error) {\n\t\treturn false;\n\t}\n\n\treturn !isPrototype(value);\n};\n","\"use strict\";\n\nvar isValue = require(\"../is-value\");\n\nvar keys = Object.keys;\n\nmodule.exports = function (object) { return keys(isValue(object) ? Object(object) : object); };\n","'use strict';\n// in old WebKit versions, `element.classList` is not an instance of global `DOMTokenList`\nvar documentCreateElement = require('../internals/document-create-element');\n\nvar classList = documentCreateElement('span').classList;\nvar DOMTokenListPrototype = classList && classList.constructor && classList.constructor.prototype;\n\nmodule.exports = DOMTokenListPrototype === Object.prototype ? undefined : DOMTokenListPrototype;\n","\"use strict\";\n\nmodule.exports = require(\"./is-implemented\")() ? Object.keys : require(\"./shim\");\n","/*!\n\nJSZip v3.10.1 - A JavaScript class for generating and reading zip files\n<http://stuartk.com/jszip>\n\n(c) 2009-2016 Stuart Knightley <stuart [at] stuartk.com>\nDual licenced under the MIT license or GPLv3. See https://raw.github.com/Stuk/jszip/main/LICENSE.markdown.\n\nJSZip uses the library pako released under the MIT license :\nhttps://github.com/nodeca/pako/blob/main/LICENSE\n*/\n\n(function(f){if(typeof exports===\"object\"&&typeof module!==\"undefined\"){module.exports=f()}else if(typeof define===\"function\"&&define.amd){define([],f)}else{var g;if(typeof window!==\"undefined\"){g=window}else if(typeof global!==\"undefined\"){g=global}else if(typeof self!==\"undefined\"){g=self}else{g=this}g.JSZip = f()}})(function(){var define,module,exports;return (function e(t,n,r){function s(o,u){if(!n[o]){if(!t[o]){var a=typeof require==\"function\"&&require;if(!u&&a)return a(o,!0);if(i)return i(o,!0);var f=new Error(\"Cannot find module '\"+o+\"'\");throw f.code=\"MODULE_NOT_FOUND\",f}var l=n[o]={exports:{}};t[o][0].call(l.exports,function(e){var n=t[o][1][e];return s(n?n:e)},l,l.exports,e,t,n,r)}return n[o].exports}var i=typeof require==\"function\"&&require;for(var o=0;o<r.length;o++)s(r[o]);return s})({1:[function(require,module,exports){\n\"use strict\";\nvar utils = require(\"./utils\");\nvar support = require(\"./support\");\n// private property\nvar _keyStr = \"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=\";\n\n\n// public method for encoding\nexports.encode = function(input) {\n    var output = [];\n    var chr1, chr2, chr3, enc1, enc2, enc3, enc4;\n    var i = 0, len = input.length, remainingBytes = len;\n\n    var isArray = utils.getTypeOf(input) !== \"string\";\n    while (i < input.length) {\n        remainingBytes = len - i;\n\n        if (!isArray) {\n            chr1 = input.charCodeAt(i++);\n            chr2 = i < len ? input.charCodeAt(i++) : 0;\n            chr3 = i < len ? input.charCodeAt(i++) : 0;\n        } else {\n            chr1 = input[i++];\n            chr2 = i < len ? input[i++] : 0;\n            chr3 = i < len ? input[i++] : 0;\n        }\n\n        enc1 = chr1 >> 2;\n        enc2 = ((chr1 & 3) << 4) | (chr2 >> 4);\n        enc3 = remainingBytes > 1 ? (((chr2 & 15) << 2) | (chr3 >> 6)) : 64;\n        enc4 = remainingBytes > 2 ? (chr3 & 63) : 64;\n\n        output.push(_keyStr.charAt(enc1) + _keyStr.charAt(enc2) + _keyStr.charAt(enc3) + _keyStr.charAt(enc4));\n\n    }\n\n    return output.join(\"\");\n};\n\n// public method for decoding\nexports.decode = function(input) {\n    var chr1, chr2, chr3;\n    var enc1, enc2, enc3, enc4;\n    var i = 0, resultIndex = 0;\n\n    var dataUrlPrefix = \"data:\";\n\n    if (input.substr(0, dataUrlPrefix.length) === dataUrlPrefix) {\n        // This is a common error: people give a data url\n        // (data:image/png;base64,iVBOR...) with a {base64: true} and\n        // wonders why things don't work.\n        // We can detect that the string input looks like a data url but we\n        // *can't* be sure it is one: removing everything up to the comma would\n        // be too dangerous.\n        throw new Error(\"Invalid base64 input, it looks like a data url.\");\n    }\n\n    input = input.replace(/[^A-Za-z0-9+/=]/g, \"\");\n\n    var totalLength = input.length * 3 / 4;\n    if(input.charAt(input.length - 1) === _keyStr.charAt(64)) {\n        totalLength--;\n    }\n    if(input.charAt(input.length - 2) === _keyStr.charAt(64)) {\n        totalLength--;\n    }\n    if (totalLength % 1 !== 0) {\n        // totalLength is not an integer, the length does not match a valid\n        // base64 content. That can happen if:\n        // - the input is not a base64 content\n        // - the input is *almost* a base64 content, with a extra chars at the\n        //   beginning or at the end\n        // - the input uses a base64 variant (base64url for example)\n        throw new Error(\"Invalid base64 input, bad content length.\");\n    }\n    var output;\n    if (support.uint8array) {\n        output = new Uint8Array(totalLength|0);\n    } else {\n        output = new Array(totalLength|0);\n    }\n\n    while (i < input.length) {\n\n        enc1 = _keyStr.indexOf(input.charAt(i++));\n        enc2 = _keyStr.indexOf(input.charAt(i++));\n        enc3 = _keyStr.indexOf(input.charAt(i++));\n        enc4 = _keyStr.indexOf(input.charAt(i++));\n\n        chr1 = (enc1 << 2) | (enc2 >> 4);\n        chr2 = ((enc2 & 15) << 4) | (enc3 >> 2);\n        chr3 = ((enc3 & 3) << 6) | enc4;\n\n        output[resultIndex++] = chr1;\n\n        if (enc3 !== 64) {\n            output[resultIndex++] = chr2;\n        }\n        if (enc4 !== 64) {\n            output[resultIndex++] = chr3;\n        }\n\n    }\n\n    return output;\n};\n\n},{\"./support\":30,\"./utils\":32}],2:[function(require,module,exports){\n\"use strict\";\n\nvar external = require(\"./external\");\nvar DataWorker = require(\"./stream/DataWorker\");\nvar Crc32Probe = require(\"./stream/Crc32Probe\");\nvar DataLengthProbe = require(\"./stream/DataLengthProbe\");\n\n/**\n * Represent a compressed object, with everything needed to decompress it.\n * @constructor\n * @param {number} compressedSize the size of the data compressed.\n * @param {number} uncompressedSize the size of the data after decompression.\n * @param {number} crc32 the crc32 of the decompressed file.\n * @param {object} compression the type of compression, see lib/compressions.js.\n * @param {String|ArrayBuffer|Uint8Array|Buffer} data the compressed data.\n */\nfunction CompressedObject(compressedSize, uncompressedSize, crc32, compression, data) {\n    this.compressedSize = compressedSize;\n    this.uncompressedSize = uncompressedSize;\n    this.crc32 = crc32;\n    this.compression = compression;\n    this.compressedContent = data;\n}\n\nCompressedObject.prototype = {\n    /**\n     * Create a worker to get the uncompressed content.\n     * @return {GenericWorker} the worker.\n     */\n    getContentWorker: function () {\n        var worker = new DataWorker(external.Promise.resolve(this.compressedContent))\n            .pipe(this.compression.uncompressWorker())\n            .pipe(new DataLengthProbe(\"data_length\"));\n\n        var that = this;\n        worker.on(\"end\", function () {\n            if (this.streamInfo[\"data_length\"] !== that.uncompressedSize) {\n                throw new Error(\"Bug : uncompressed data size mismatch\");\n            }\n        });\n        return worker;\n    },\n    /**\n     * Create a worker to get the compressed content.\n     * @return {GenericWorker} the worker.\n     */\n    getCompressedWorker: function () {\n        return new DataWorker(external.Promise.resolve(this.compressedContent))\n            .withStreamInfo(\"compressedSize\", this.compressedSize)\n            .withStreamInfo(\"uncompressedSize\", this.uncompressedSize)\n            .withStreamInfo(\"crc32\", this.crc32)\n            .withStreamInfo(\"compression\", this.compression)\n        ;\n    }\n};\n\n/**\n * Chain the given worker with other workers to compress the content with the\n * given compression.\n * @param {GenericWorker} uncompressedWorker the worker to pipe.\n * @param {Object} compression the compression object.\n * @param {Object} compressionOptions the options to use when compressing.\n * @return {GenericWorker} the new worker compressing the content.\n */\nCompressedObject.createWorkerFrom = function (uncompressedWorker, compression, compressionOptions) {\n    return uncompressedWorker\n        .pipe(new Crc32Probe())\n        .pipe(new DataLengthProbe(\"uncompressedSize\"))\n        .pipe(compression.compressWorker(compressionOptions))\n        .pipe(new DataLengthProbe(\"compressedSize\"))\n        .withStreamInfo(\"compression\", compression);\n};\n\nmodule.exports = CompressedObject;\n\n},{\"./external\":6,\"./stream/Crc32Probe\":25,\"./stream/DataLengthProbe\":26,\"./stream/DataWorker\":27}],3:[function(require,module,exports){\n\"use strict\";\n\nvar GenericWorker = require(\"./stream/GenericWorker\");\n\nexports.STORE = {\n    magic: \"\\x00\\x00\",\n    compressWorker : function () {\n        return new GenericWorker(\"STORE compression\");\n    },\n    uncompressWorker : function () {\n        return new GenericWorker(\"STORE decompression\");\n    }\n};\nexports.DEFLATE = require(\"./flate\");\n\n},{\"./flate\":7,\"./stream/GenericWorker\":28}],4:[function(require,module,exports){\n\"use strict\";\n\nvar utils = require(\"./utils\");\n\n/**\n * The following functions come from pako, from pako/lib/zlib/crc32.js\n * released under the MIT license, see pako https://github.com/nodeca/pako/\n */\n\n// Use ordinary array, since untyped makes no boost here\nfunction makeTable() {\n    var c, table = [];\n\n    for(var n =0; n < 256; n++){\n        c = n;\n        for(var k =0; k < 8; k++){\n            c = ((c&1) ? (0xEDB88320 ^ (c >>> 1)) : (c >>> 1));\n        }\n        table[n] = c;\n    }\n\n    return table;\n}\n\n// Create table on load. Just 255 signed longs. Not a problem.\nvar crcTable = makeTable();\n\n\nfunction crc32(crc, buf, len, pos) {\n    var t = crcTable, end = pos + len;\n\n    crc = crc ^ (-1);\n\n    for (var i = pos; i < end; i++ ) {\n        crc = (crc >>> 8) ^ t[(crc ^ buf[i]) & 0xFF];\n    }\n\n    return (crc ^ (-1)); // >>> 0;\n}\n\n// That's all for the pako functions.\n\n/**\n * Compute the crc32 of a string.\n * This is almost the same as the function crc32, but for strings. Using the\n * same function for the two use cases leads to horrible performances.\n * @param {Number} crc the starting value of the crc.\n * @param {String} str the string to use.\n * @param {Number} len the length of the string.\n * @param {Number} pos the starting position for the crc32 computation.\n * @return {Number} the computed crc32.\n */\nfunction crc32str(crc, str, len, pos) {\n    var t = crcTable, end = pos + len;\n\n    crc = crc ^ (-1);\n\n    for (var i = pos; i < end; i++ ) {\n        crc = (crc >>> 8) ^ t[(crc ^ str.charCodeAt(i)) & 0xFF];\n    }\n\n    return (crc ^ (-1)); // >>> 0;\n}\n\nmodule.exports = function crc32wrapper(input, crc) {\n    if (typeof input === \"undefined\" || !input.length) {\n        return 0;\n    }\n\n    var isArray = utils.getTypeOf(input) !== \"string\";\n\n    if(isArray) {\n        return crc32(crc|0, input, input.length, 0);\n    } else {\n        return crc32str(crc|0, input, input.length, 0);\n    }\n};\n\n},{\"./utils\":32}],5:[function(require,module,exports){\n\"use strict\";\nexports.base64 = false;\nexports.binary = false;\nexports.dir = false;\nexports.createFolders = true;\nexports.date = null;\nexports.compression = null;\nexports.compressionOptions = null;\nexports.comment = null;\nexports.unixPermissions = null;\nexports.dosPermissions = null;\n\n},{}],6:[function(require,module,exports){\n\"use strict\";\n\n// load the global object first:\n// - it should be better integrated in the system (unhandledRejection in node)\n// - the environment may have a custom Promise implementation (see zone.js)\nvar ES6Promise = null;\nif (typeof Promise !== \"undefined\") {\n    ES6Promise = Promise;\n} else {\n    ES6Promise = require(\"lie\");\n}\n\n/**\n * Let the user use/change some implementations.\n */\nmodule.exports = {\n    Promise: ES6Promise\n};\n\n},{\"lie\":37}],7:[function(require,module,exports){\n\"use strict\";\nvar USE_TYPEDARRAY = (typeof Uint8Array !== \"undefined\") && (typeof Uint16Array !== \"undefined\") && (typeof Uint32Array !== \"undefined\");\n\nvar pako = require(\"pako\");\nvar utils = require(\"./utils\");\nvar GenericWorker = require(\"./stream/GenericWorker\");\n\nvar ARRAY_TYPE = USE_TYPEDARRAY ? \"uint8array\" : \"array\";\n\nexports.magic = \"\\x08\\x00\";\n\n/**\n * Create a worker that uses pako to inflate/deflate.\n * @constructor\n * @param {String} action the name of the pako function to call : either \"Deflate\" or \"Inflate\".\n * @param {Object} options the options to use when (de)compressing.\n */\nfunction FlateWorker(action, options) {\n    GenericWorker.call(this, \"FlateWorker/\" + action);\n\n    this._pako = null;\n    this._pakoAction = action;\n    this._pakoOptions = options;\n    // the `meta` object from the last chunk received\n    // this allow this worker to pass around metadata\n    this.meta = {};\n}\n\nutils.inherits(FlateWorker, GenericWorker);\n\n/**\n * @see GenericWorker.processChunk\n */\nFlateWorker.prototype.processChunk = function (chunk) {\n    this.meta = chunk.meta;\n    if (this._pako === null) {\n        this._createPako();\n    }\n    this._pako.push(utils.transformTo(ARRAY_TYPE, chunk.data), false);\n};\n\n/**\n * @see GenericWorker.flush\n */\nFlateWorker.prototype.flush = function () {\n    GenericWorker.prototype.flush.call(this);\n    if (this._pako === null) {\n        this._createPako();\n    }\n    this._pako.push([], true);\n};\n/**\n * @see GenericWorker.cleanUp\n */\nFlateWorker.prototype.cleanUp = function () {\n    GenericWorker.prototype.cleanUp.call(this);\n    this._pako = null;\n};\n\n/**\n * Create the _pako object.\n * TODO: lazy-loading this object isn't the best solution but it's the\n * quickest. The best solution is to lazy-load the worker list. See also the\n * issue #446.\n */\nFlateWorker.prototype._createPako = function () {\n    this._pako = new pako[this._pakoAction]({\n        raw: true,\n        level: this._pakoOptions.level || -1 // default compression\n    });\n    var self = this;\n    this._pako.onData = function(data) {\n        self.push({\n            data : data,\n            meta : self.meta\n        });\n    };\n};\n\nexports.compressWorker = function (compressionOptions) {\n    return new FlateWorker(\"Deflate\", compressionOptions);\n};\nexports.uncompressWorker = function () {\n    return new FlateWorker(\"Inflate\", {});\n};\n\n},{\"./stream/GenericWorker\":28,\"./utils\":32,\"pako\":38}],8:[function(require,module,exports){\n\"use strict\";\n\nvar utils = require(\"../utils\");\nvar GenericWorker = require(\"../stream/GenericWorker\");\nvar utf8 = require(\"../utf8\");\nvar crc32 = require(\"../crc32\");\nvar signature = require(\"../signature\");\n\n/**\n * Transform an integer into a string in hexadecimal.\n * @private\n * @param {number} dec the number to convert.\n * @param {number} bytes the number of bytes to generate.\n * @returns {string} the result.\n */\nvar decToHex = function(dec, bytes) {\n    var hex = \"\", i;\n    for (i = 0; i < bytes; i++) {\n        hex += String.fromCharCode(dec & 0xff);\n        dec = dec >>> 8;\n    }\n    return hex;\n};\n\n/**\n * Generate the UNIX part of the external file attributes.\n * @param {Object} unixPermissions the unix permissions or null.\n * @param {Boolean} isDir true if the entry is a directory, false otherwise.\n * @return {Number} a 32 bit integer.\n *\n * adapted from http://unix.stackexchange.com/questions/14705/the-zip-formats-external-file-attribute :\n *\n * TTTTsstrwxrwxrwx0000000000ADVSHR\n * ^^^^____________________________ file type, see zipinfo.c (UNX_*)\n *     ^^^_________________________ setuid, setgid, sticky\n *        ^^^^^^^^^________________ permissions\n *                 ^^^^^^^^^^______ not used ?\n *                           ^^^^^^ DOS attribute bits : Archive, Directory, Volume label, System file, Hidden, Read only\n */\nvar generateUnixExternalFileAttr = function (unixPermissions, isDir) {\n\n    var result = unixPermissions;\n    if (!unixPermissions) {\n        // I can't use octal values in strict mode, hence the hexa.\n        //  040775 => 0x41fd\n        // 0100664 => 0x81b4\n        result = isDir ? 0x41fd : 0x81b4;\n    }\n    return (result & 0xFFFF) << 16;\n};\n\n/**\n * Generate the DOS part of the external file attributes.\n * @param {Object} dosPermissions the dos permissions or null.\n * @param {Boolean} isDir true if the entry is a directory, false otherwise.\n * @return {Number} a 32 bit integer.\n *\n * Bit 0     Read-Only\n * Bit 1     Hidden\n * Bit 2     System\n * Bit 3     Volume Label\n * Bit 4     Directory\n * Bit 5     Archive\n */\nvar generateDosExternalFileAttr = function (dosPermissions) {\n    // the dir flag is already set for compatibility\n    return (dosPermissions || 0)  & 0x3F;\n};\n\n/**\n * Generate the various parts used in the construction of the final zip file.\n * @param {Object} streamInfo the hash with information about the compressed file.\n * @param {Boolean} streamedContent is the content streamed ?\n * @param {Boolean} streamingEnded is the stream finished ?\n * @param {number} offset the current offset from the start of the zip file.\n * @param {String} platform let's pretend we are this platform (change platform dependents fields)\n * @param {Function} encodeFileName the function to encode the file name / comment.\n * @return {Object} the zip parts.\n */\nvar generateZipParts = function(streamInfo, streamedContent, streamingEnded, offset, platform, encodeFileName) {\n    var file = streamInfo[\"file\"],\n        compression = streamInfo[\"compression\"],\n        useCustomEncoding = encodeFileName !== utf8.utf8encode,\n        encodedFileName = utils.transformTo(\"string\", encodeFileName(file.name)),\n        utfEncodedFileName = utils.transformTo(\"string\", utf8.utf8encode(file.name)),\n        comment = file.comment,\n        encodedComment = utils.transformTo(\"string\", encodeFileName(comment)),\n        utfEncodedComment = utils.transformTo(\"string\", utf8.utf8encode(comment)),\n        useUTF8ForFileName = utfEncodedFileName.length !== file.name.length,\n        useUTF8ForComment = utfEncodedComment.length !== comment.length,\n        dosTime,\n        dosDate,\n        extraFields = \"\",\n        unicodePathExtraField = \"\",\n        unicodeCommentExtraField = \"\",\n        dir = file.dir,\n        date = file.date;\n\n\n    var dataInfo = {\n        crc32 : 0,\n        compressedSize : 0,\n        uncompressedSize : 0\n    };\n\n    // if the content is streamed, the sizes/crc32 are only available AFTER\n    // the end of the stream.\n    if (!streamedContent || streamingEnded) {\n        dataInfo.crc32 = streamInfo[\"crc32\"];\n        dataInfo.compressedSize = streamInfo[\"compressedSize\"];\n        dataInfo.uncompressedSize = streamInfo[\"uncompressedSize\"];\n    }\n\n    var bitflag = 0;\n    if (streamedContent) {\n        // Bit 3: the sizes/crc32 are set to zero in the local header.\n        // The correct values are put in the data descriptor immediately\n        // following the compressed data.\n        bitflag |= 0x0008;\n    }\n    if (!useCustomEncoding && (useUTF8ForFileName || useUTF8ForComment)) {\n        // Bit 11: Language encoding flag (EFS).\n        bitflag |= 0x0800;\n    }\n\n\n    var extFileAttr = 0;\n    var versionMadeBy = 0;\n    if (dir) {\n        // dos or unix, we set the dos dir flag\n        extFileAttr |= 0x00010;\n    }\n    if(platform === \"UNIX\") {\n        versionMadeBy = 0x031E; // UNIX, version 3.0\n        extFileAttr |= generateUnixExternalFileAttr(file.unixPermissions, dir);\n    } else { // DOS or other, fallback to DOS\n        versionMadeBy = 0x0014; // DOS, version 2.0\n        extFileAttr |= generateDosExternalFileAttr(file.dosPermissions, dir);\n    }\n\n    // date\n    // @see http://www.delorie.com/djgpp/doc/rbinter/it/52/13.html\n    // @see http://www.delorie.com/djgpp/doc/rbinter/it/65/16.html\n    // @see http://www.delorie.com/djgpp/doc/rbinter/it/66/16.html\n\n    dosTime = date.getUTCHours();\n    dosTime = dosTime << 6;\n    dosTime = dosTime | date.getUTCMinutes();\n    dosTime = dosTime << 5;\n    dosTime = dosTime | date.getUTCSeconds() / 2;\n\n    dosDate = date.getUTCFullYear() - 1980;\n    dosDate = dosDate << 4;\n    dosDate = dosDate | (date.getUTCMonth() + 1);\n    dosDate = dosDate << 5;\n    dosDate = dosDate | date.getUTCDate();\n\n    if (useUTF8ForFileName) {\n        // set the unicode path extra field. unzip needs at least one extra\n        // field to correctly handle unicode path, so using the path is as good\n        // as any other information. This could improve the situation with\n        // other archive managers too.\n        // This field is usually used without the utf8 flag, with a non\n        // unicode path in the header (winrar, winzip). This helps (a bit)\n        // with the messy Windows' default compressed folders feature but\n        // breaks on p7zip which doesn't seek the unicode path extra field.\n        // So for now, UTF-8 everywhere !\n        unicodePathExtraField =\n            // Version\n            decToHex(1, 1) +\n            // NameCRC32\n            decToHex(crc32(encodedFileName), 4) +\n            // UnicodeName\n            utfEncodedFileName;\n\n        extraFields +=\n            // Info-ZIP Unicode Path Extra Field\n            \"\\x75\\x70\" +\n            // size\n            decToHex(unicodePathExtraField.length, 2) +\n            // content\n            unicodePathExtraField;\n    }\n\n    if(useUTF8ForComment) {\n\n        unicodeCommentExtraField =\n            // Version\n            decToHex(1, 1) +\n            // CommentCRC32\n            decToHex(crc32(encodedComment), 4) +\n            // UnicodeName\n            utfEncodedComment;\n\n        extraFields +=\n            // Info-ZIP Unicode Path Extra Field\n            \"\\x75\\x63\" +\n            // size\n            decToHex(unicodeCommentExtraField.length, 2) +\n            // content\n            unicodeCommentExtraField;\n    }\n\n    var header = \"\";\n\n    // version needed to extract\n    header += \"\\x0A\\x00\";\n    // general purpose bit flag\n    header += decToHex(bitflag, 2);\n    // compression method\n    header += compression.magic;\n    // last mod file time\n    header += decToHex(dosTime, 2);\n    // last mod file date\n    header += decToHex(dosDate, 2);\n    // crc-32\n    header += decToHex(dataInfo.crc32, 4);\n    // compressed size\n    header += decToHex(dataInfo.compressedSize, 4);\n    // uncompressed size\n    header += decToHex(dataInfo.uncompressedSize, 4);\n    // file name length\n    header += decToHex(encodedFileName.length, 2);\n    // extra field length\n    header += decToHex(extraFields.length, 2);\n\n\n    var fileRecord = signature.LOCAL_FILE_HEADER + header + encodedFileName + extraFields;\n\n    var dirRecord = signature.CENTRAL_FILE_HEADER +\n        // version made by (00: DOS)\n        decToHex(versionMadeBy, 2) +\n        // file header (common to file and central directory)\n        header +\n        // file comment length\n        decToHex(encodedComment.length, 2) +\n        // disk number start\n        \"\\x00\\x00\" +\n        // internal file attributes TODO\n        \"\\x00\\x00\" +\n        // external file attributes\n        decToHex(extFileAttr, 4) +\n        // relative offset of local header\n        decToHex(offset, 4) +\n        // file name\n        encodedFileName +\n        // extra field\n        extraFields +\n        // file comment\n        encodedComment;\n\n    return {\n        fileRecord: fileRecord,\n        dirRecord: dirRecord\n    };\n};\n\n/**\n * Generate the EOCD record.\n * @param {Number} entriesCount the number of entries in the zip file.\n * @param {Number} centralDirLength the length (in bytes) of the central dir.\n * @param {Number} localDirLength the length (in bytes) of the local dir.\n * @param {String} comment the zip file comment as a binary string.\n * @param {Function} encodeFileName the function to encode the comment.\n * @return {String} the EOCD record.\n */\nvar generateCentralDirectoryEnd = function (entriesCount, centralDirLength, localDirLength, comment, encodeFileName) {\n    var dirEnd = \"\";\n    var encodedComment = utils.transformTo(\"string\", encodeFileName(comment));\n\n    // end of central dir signature\n    dirEnd = signature.CENTRAL_DIRECTORY_END +\n        // number of this disk\n        \"\\x00\\x00\" +\n        // number of the disk with the start of the central directory\n        \"\\x00\\x00\" +\n        // total number of entries in the central directory on this disk\n        decToHex(entriesCount, 2) +\n        // total number of entries in the central directory\n        decToHex(entriesCount, 2) +\n        // size of the central directory   4 bytes\n        decToHex(centralDirLength, 4) +\n        // offset of start of central directory with respect to the starting disk number\n        decToHex(localDirLength, 4) +\n        // .ZIP file comment length\n        decToHex(encodedComment.length, 2) +\n        // .ZIP file comment\n        encodedComment;\n\n    return dirEnd;\n};\n\n/**\n * Generate data descriptors for a file entry.\n * @param {Object} streamInfo the hash generated by a worker, containing information\n * on the file entry.\n * @return {String} the data descriptors.\n */\nvar generateDataDescriptors = function (streamInfo) {\n    var descriptor = \"\";\n    descriptor = signature.DATA_DESCRIPTOR +\n        // crc-32                          4 bytes\n        decToHex(streamInfo[\"crc32\"], 4) +\n        // compressed size                 4 bytes\n        decToHex(streamInfo[\"compressedSize\"], 4) +\n        // uncompressed size               4 bytes\n        decToHex(streamInfo[\"uncompressedSize\"], 4);\n\n    return descriptor;\n};\n\n\n/**\n * A worker to concatenate other workers to create a zip file.\n * @param {Boolean} streamFiles `true` to stream the content of the files,\n * `false` to accumulate it.\n * @param {String} comment the comment to use.\n * @param {String} platform the platform to use, \"UNIX\" or \"DOS\".\n * @param {Function} encodeFileName the function to encode file names and comments.\n */\nfunction ZipFileWorker(streamFiles, comment, platform, encodeFileName) {\n    GenericWorker.call(this, \"ZipFileWorker\");\n    // The number of bytes written so far. This doesn't count accumulated chunks.\n    this.bytesWritten = 0;\n    // The comment of the zip file\n    this.zipComment = comment;\n    // The platform \"generating\" the zip file.\n    this.zipPlatform = platform;\n    // the function to encode file names and comments.\n    this.encodeFileName = encodeFileName;\n    // Should we stream the content of the files ?\n    this.streamFiles = streamFiles;\n    // If `streamFiles` is false, we will need to accumulate the content of the\n    // files to calculate sizes / crc32 (and write them *before* the content).\n    // This boolean indicates if we are accumulating chunks (it will change a lot\n    // during the lifetime of this worker).\n    this.accumulate = false;\n    // The buffer receiving chunks when accumulating content.\n    this.contentBuffer = [];\n    // The list of generated directory records.\n    this.dirRecords = [];\n    // The offset (in bytes) from the beginning of the zip file for the current source.\n    this.currentSourceOffset = 0;\n    // The total number of entries in this zip file.\n    this.entriesCount = 0;\n    // the name of the file currently being added, null when handling the end of the zip file.\n    // Used for the emitted metadata.\n    this.currentFile = null;\n\n\n\n    this._sources = [];\n}\nutils.inherits(ZipFileWorker, GenericWorker);\n\n/**\n * @see GenericWorker.push\n */\nZipFileWorker.prototype.push = function (chunk) {\n\n    var currentFilePercent = chunk.meta.percent || 0;\n    var entriesCount = this.entriesCount;\n    var remainingFiles = this._sources.length;\n\n    if(this.accumulate) {\n        this.contentBuffer.push(chunk);\n    } else {\n        this.bytesWritten += chunk.data.length;\n\n        GenericWorker.prototype.push.call(this, {\n            data : chunk.data,\n            meta : {\n                currentFile : this.currentFile,\n                percent : entriesCount ? (currentFilePercent + 100 * (entriesCount - remainingFiles - 1)) / entriesCount : 100\n            }\n        });\n    }\n};\n\n/**\n * The worker started a new source (an other worker).\n * @param {Object} streamInfo the streamInfo object from the new source.\n */\nZipFileWorker.prototype.openedSource = function (streamInfo) {\n    this.currentSourceOffset = this.bytesWritten;\n    this.currentFile = streamInfo[\"file\"].name;\n\n    var streamedContent = this.streamFiles && !streamInfo[\"file\"].dir;\n\n    // don't stream folders (because they don't have any content)\n    if(streamedContent) {\n        var record = generateZipParts(streamInfo, streamedContent, false, this.currentSourceOffset, this.zipPlatform, this.encodeFileName);\n        this.push({\n            data : record.fileRecord,\n            meta : {percent:0}\n        });\n    } else {\n        // we need to wait for the whole file before pushing anything\n        this.accumulate = true;\n    }\n};\n\n/**\n * The worker finished a source (an other worker).\n * @param {Object} streamInfo the streamInfo object from the finished source.\n */\nZipFileWorker.prototype.closedSource = function (streamInfo) {\n    this.accumulate = false;\n    var streamedContent = this.streamFiles && !streamInfo[\"file\"].dir;\n    var record = generateZipParts(streamInfo, streamedContent, true, this.currentSourceOffset, this.zipPlatform, this.encodeFileName);\n\n    this.dirRecords.push(record.dirRecord);\n    if(streamedContent) {\n        // after the streamed file, we put data descriptors\n        this.push({\n            data : generateDataDescriptors(streamInfo),\n            meta : {percent:100}\n        });\n    } else {\n        // the content wasn't streamed, we need to push everything now\n        // first the file record, then the content\n        this.push({\n            data : record.fileRecord,\n            meta : {percent:0}\n        });\n        while(this.contentBuffer.length) {\n            this.push(this.contentBuffer.shift());\n        }\n    }\n    this.currentFile = null;\n};\n\n/**\n * @see GenericWorker.flush\n */\nZipFileWorker.prototype.flush = function () {\n\n    var localDirLength = this.bytesWritten;\n    for(var i = 0; i < this.dirRecords.length; i++) {\n        this.push({\n            data : this.dirRecords[i],\n            meta : {percent:100}\n        });\n    }\n    var centralDirLength = this.bytesWritten - localDirLength;\n\n    var dirEnd = generateCentralDirectoryEnd(this.dirRecords.length, centralDirLength, localDirLength, this.zipComment, this.encodeFileName);\n\n    this.push({\n        data : dirEnd,\n        meta : {percent:100}\n    });\n};\n\n/**\n * Prepare the next source to be read.\n */\nZipFileWorker.prototype.prepareNextSource = function () {\n    this.previous = this._sources.shift();\n    this.openedSource(this.previous.streamInfo);\n    if (this.isPaused) {\n        this.previous.pause();\n    } else {\n        this.previous.resume();\n    }\n};\n\n/**\n * @see GenericWorker.registerPrevious\n */\nZipFileWorker.prototype.registerPrevious = function (previous) {\n    this._sources.push(previous);\n    var self = this;\n\n    previous.on(\"data\", function (chunk) {\n        self.processChunk(chunk);\n    });\n    previous.on(\"end\", function () {\n        self.closedSource(self.previous.streamInfo);\n        if(self._sources.length) {\n            self.prepareNextSource();\n        } else {\n            self.end();\n        }\n    });\n    previous.on(\"error\", function (e) {\n        self.error(e);\n    });\n    return this;\n};\n\n/**\n * @see GenericWorker.resume\n */\nZipFileWorker.prototype.resume = function () {\n    if(!GenericWorker.prototype.resume.call(this)) {\n        return false;\n    }\n\n    if (!this.previous && this._sources.length) {\n        this.prepareNextSource();\n        return true;\n    }\n    if (!this.previous && !this._sources.length && !this.generatedError) {\n        this.end();\n        return true;\n    }\n};\n\n/**\n * @see GenericWorker.error\n */\nZipFileWorker.prototype.error = function (e) {\n    var sources = this._sources;\n    if(!GenericWorker.prototype.error.call(this, e)) {\n        return false;\n    }\n    for(var i = 0; i < sources.length; i++) {\n        try {\n            sources[i].error(e);\n        } catch(e) {\n            // the `error` exploded, nothing to do\n        }\n    }\n    return true;\n};\n\n/**\n * @see GenericWorker.lock\n */\nZipFileWorker.prototype.lock = function () {\n    GenericWorker.prototype.lock.call(this);\n    var sources = this._sources;\n    for(var i = 0; i < sources.length; i++) {\n        sources[i].lock();\n    }\n};\n\nmodule.exports = ZipFileWorker;\n\n},{\"../crc32\":4,\"../signature\":23,\"../stream/GenericWorker\":28,\"../utf8\":31,\"../utils\":32}],9:[function(require,module,exports){\n\"use strict\";\n\nvar compressions = require(\"../compressions\");\nvar ZipFileWorker = require(\"./ZipFileWorker\");\n\n/**\n * Find the compression to use.\n * @param {String} fileCompression the compression defined at the file level, if any.\n * @param {String} zipCompression the compression defined at the load() level.\n * @return {Object} the compression object to use.\n */\nvar getCompression = function (fileCompression, zipCompression) {\n\n    var compressionName = fileCompression || zipCompression;\n    var compression = compressions[compressionName];\n    if (!compression) {\n        throw new Error(compressionName + \" is not a valid compression method !\");\n    }\n    return compression;\n};\n\n/**\n * Create a worker to generate a zip file.\n * @param {JSZip} zip the JSZip instance at the right root level.\n * @param {Object} options to generate the zip file.\n * @param {String} comment the comment to use.\n */\nexports.generateWorker = function (zip, options, comment) {\n\n    var zipFileWorker = new ZipFileWorker(options.streamFiles, comment, options.platform, options.encodeFileName);\n    var entriesCount = 0;\n    try {\n\n        zip.forEach(function (relativePath, file) {\n            entriesCount++;\n            var compression = getCompression(file.options.compression, options.compression);\n            var compressionOptions = file.options.compressionOptions || options.compressionOptions || {};\n            var dir = file.dir, date = file.date;\n\n            file._compressWorker(compression, compressionOptions)\n                .withStreamInfo(\"file\", {\n                    name : relativePath,\n                    dir : dir,\n                    date : date,\n                    comment : file.comment || \"\",\n                    unixPermissions : file.unixPermissions,\n                    dosPermissions : file.dosPermissions\n                })\n                .pipe(zipFileWorker);\n        });\n        zipFileWorker.entriesCount = entriesCount;\n    } catch (e) {\n        zipFileWorker.error(e);\n    }\n\n    return zipFileWorker;\n};\n\n},{\"../compressions\":3,\"./ZipFileWorker\":8}],10:[function(require,module,exports){\n\"use strict\";\n\n/**\n * Representation a of zip file in js\n * @constructor\n */\nfunction JSZip() {\n    // if this constructor is used without `new`, it adds `new` before itself:\n    if(!(this instanceof JSZip)) {\n        return new JSZip();\n    }\n\n    if(arguments.length) {\n        throw new Error(\"The constructor with parameters has been removed in JSZip 3.0, please check the upgrade guide.\");\n    }\n\n    // object containing the files :\n    // {\n    //   \"folder/\" : {...},\n    //   \"folder/data.txt\" : {...}\n    // }\n    // NOTE: we use a null prototype because we do not\n    // want filenames like \"toString\" coming from a zip file\n    // to overwrite methods and attributes in a normal Object.\n    this.files = Object.create(null);\n\n    this.comment = null;\n\n    // Where we are in the hierarchy\n    this.root = \"\";\n    this.clone = function() {\n        var newObj = new JSZip();\n        for (var i in this) {\n            if (typeof this[i] !== \"function\") {\n                newObj[i] = this[i];\n            }\n        }\n        return newObj;\n    };\n}\nJSZip.prototype = require(\"./object\");\nJSZip.prototype.loadAsync = require(\"./load\");\nJSZip.support = require(\"./support\");\nJSZip.defaults = require(\"./defaults\");\n\n// TODO find a better way to handle this version,\n// a require('package.json').version doesn't work with webpack, see #327\nJSZip.version = \"3.10.1\";\n\nJSZip.loadAsync = function (content, options) {\n    return new JSZip().loadAsync(content, options);\n};\n\nJSZip.external = require(\"./external\");\nmodule.exports = JSZip;\n\n},{\"./defaults\":5,\"./external\":6,\"./load\":11,\"./object\":15,\"./support\":30}],11:[function(require,module,exports){\n\"use strict\";\nvar utils = require(\"./utils\");\nvar external = require(\"./external\");\nvar utf8 = require(\"./utf8\");\nvar ZipEntries = require(\"./zipEntries\");\nvar Crc32Probe = require(\"./stream/Crc32Probe\");\nvar nodejsUtils = require(\"./nodejsUtils\");\n\n/**\n * Check the CRC32 of an entry.\n * @param {ZipEntry} zipEntry the zip entry to check.\n * @return {Promise} the result.\n */\nfunction checkEntryCRC32(zipEntry) {\n    return new external.Promise(function (resolve, reject) {\n        var worker = zipEntry.decompressed.getContentWorker().pipe(new Crc32Probe());\n        worker.on(\"error\", function (e) {\n            reject(e);\n        })\n            .on(\"end\", function () {\n                if (worker.streamInfo.crc32 !== zipEntry.decompressed.crc32) {\n                    reject(new Error(\"Corrupted zip : CRC32 mismatch\"));\n                } else {\n                    resolve();\n                }\n            })\n            .resume();\n    });\n}\n\nmodule.exports = function (data, options) {\n    var zip = this;\n    options = utils.extend(options || {}, {\n        base64: false,\n        checkCRC32: false,\n        optimizedBinaryString: false,\n        createFolders: false,\n        decodeFileName: utf8.utf8decode\n    });\n\n    if (nodejsUtils.isNode && nodejsUtils.isStream(data)) {\n        return external.Promise.reject(new Error(\"JSZip can't accept a stream when loading a zip file.\"));\n    }\n\n    return utils.prepareContent(\"the loaded zip file\", data, true, options.optimizedBinaryString, options.base64)\n        .then(function (data) {\n            var zipEntries = new ZipEntries(options);\n            zipEntries.load(data);\n            return zipEntries;\n        }).then(function checkCRC32(zipEntries) {\n            var promises = [external.Promise.resolve(zipEntries)];\n            var files = zipEntries.files;\n            if (options.checkCRC32) {\n                for (var i = 0; i < files.length; i++) {\n                    promises.push(checkEntryCRC32(files[i]));\n                }\n            }\n            return external.Promise.all(promises);\n        }).then(function addFiles(results) {\n            var zipEntries = results.shift();\n            var files = zipEntries.files;\n            for (var i = 0; i < files.length; i++) {\n                var input = files[i];\n\n                var unsafeName = input.fileNameStr;\n                var safeName = utils.resolve(input.fileNameStr);\n\n                zip.file(safeName, input.decompressed, {\n                    binary: true,\n                    optimizedBinaryString: true,\n                    date: input.date,\n                    dir: input.dir,\n                    comment: input.fileCommentStr.length ? input.fileCommentStr : null,\n                    unixPermissions: input.unixPermissions,\n                    dosPermissions: input.dosPermissions,\n                    createFolders: options.createFolders\n                });\n                if (!input.dir) {\n                    zip.file(safeName).unsafeOriginalName = unsafeName;\n                }\n            }\n            if (zipEntries.zipComment.length) {\n                zip.comment = zipEntries.zipComment;\n            }\n\n            return zip;\n        });\n};\n\n},{\"./external\":6,\"./nodejsUtils\":14,\"./stream/Crc32Probe\":25,\"./utf8\":31,\"./utils\":32,\"./zipEntries\":33}],12:[function(require,module,exports){\n\"use strict\";\n\nvar utils = require(\"../utils\");\nvar GenericWorker = require(\"../stream/GenericWorker\");\n\n/**\n * A worker that use a nodejs stream as source.\n * @constructor\n * @param {String} filename the name of the file entry for this stream.\n * @param {Readable} stream the nodejs stream.\n */\nfunction NodejsStreamInputAdapter(filename, stream) {\n    GenericWorker.call(this, \"Nodejs stream input adapter for \" + filename);\n    this._upstreamEnded = false;\n    this._bindStream(stream);\n}\n\nutils.inherits(NodejsStreamInputAdapter, GenericWorker);\n\n/**\n * Prepare the stream and bind the callbacks on it.\n * Do this ASAP on node 0.10 ! A lazy binding doesn't always work.\n * @param {Stream} stream the nodejs stream to use.\n */\nNodejsStreamInputAdapter.prototype._bindStream = function (stream) {\n    var self = this;\n    this._stream = stream;\n    stream.pause();\n    stream\n        .on(\"data\", function (chunk) {\n            self.push({\n                data: chunk,\n                meta : {\n                    percent : 0\n                }\n            });\n        })\n        .on(\"error\", function (e) {\n            if(self.isPaused) {\n                this.generatedError = e;\n            } else {\n                self.error(e);\n            }\n        })\n        .on(\"end\", function () {\n            if(self.isPaused) {\n                self._upstreamEnded = true;\n            } else {\n                self.end();\n            }\n        });\n};\nNodejsStreamInputAdapter.prototype.pause = function () {\n    if(!GenericWorker.prototype.pause.call(this)) {\n        return false;\n    }\n    this._stream.pause();\n    return true;\n};\nNodejsStreamInputAdapter.prototype.resume = function () {\n    if(!GenericWorker.prototype.resume.call(this)) {\n        return false;\n    }\n\n    if(this._upstreamEnded) {\n        this.end();\n    } else {\n        this._stream.resume();\n    }\n\n    return true;\n};\n\nmodule.exports = NodejsStreamInputAdapter;\n\n},{\"../stream/GenericWorker\":28,\"../utils\":32}],13:[function(require,module,exports){\n\"use strict\";\n\nvar Readable = require(\"readable-stream\").Readable;\n\nvar utils = require(\"../utils\");\nutils.inherits(NodejsStreamOutputAdapter, Readable);\n\n/**\n* A nodejs stream using a worker as source.\n* @see the SourceWrapper in http://nodejs.org/api/stream.html\n* @constructor\n* @param {StreamHelper} helper the helper wrapping the worker\n* @param {Object} options the nodejs stream options\n* @param {Function} updateCb the update callback.\n*/\nfunction NodejsStreamOutputAdapter(helper, options, updateCb) {\n    Readable.call(this, options);\n    this._helper = helper;\n\n    var self = this;\n    helper.on(\"data\", function (data, meta) {\n        if (!self.push(data)) {\n            self._helper.pause();\n        }\n        if(updateCb) {\n            updateCb(meta);\n        }\n    })\n        .on(\"error\", function(e) {\n            self.emit(\"error\", e);\n        })\n        .on(\"end\", function () {\n            self.push(null);\n        });\n}\n\n\nNodejsStreamOutputAdapter.prototype._read = function() {\n    this._helper.resume();\n};\n\nmodule.exports = NodejsStreamOutputAdapter;\n\n},{\"../utils\":32,\"readable-stream\":16}],14:[function(require,module,exports){\n\"use strict\";\n\nmodule.exports = {\n    /**\n     * True if this is running in Nodejs, will be undefined in a browser.\n     * In a browser, browserify won't include this file and the whole module\n     * will be resolved an empty object.\n     */\n    isNode : typeof Buffer !== \"undefined\",\n    /**\n     * Create a new nodejs Buffer from an existing content.\n     * @param {Object} data the data to pass to the constructor.\n     * @param {String} encoding the encoding to use.\n     * @return {Buffer} a new Buffer.\n     */\n    newBufferFrom: function(data, encoding) {\n        if (Buffer.from && Buffer.from !== Uint8Array.from) {\n            return Buffer.from(data, encoding);\n        } else {\n            if (typeof data === \"number\") {\n                // Safeguard for old Node.js versions. On newer versions,\n                // Buffer.from(number) / Buffer(number, encoding) already throw.\n                throw new Error(\"The \\\"data\\\" argument must not be a number\");\n            }\n            return new Buffer(data, encoding);\n        }\n    },\n    /**\n     * Create a new nodejs Buffer with the specified size.\n     * @param {Integer} size the size of the buffer.\n     * @return {Buffer} a new Buffer.\n     */\n    allocBuffer: function (size) {\n        if (Buffer.alloc) {\n            return Buffer.alloc(size);\n        } else {\n            var buf = new Buffer(size);\n            buf.fill(0);\n            return buf;\n        }\n    },\n    /**\n     * Find out if an object is a Buffer.\n     * @param {Object} b the object to test.\n     * @return {Boolean} true if the object is a Buffer, false otherwise.\n     */\n    isBuffer : function(b){\n        return Buffer.isBuffer(b);\n    },\n\n    isStream : function (obj) {\n        return obj &&\n            typeof obj.on === \"function\" &&\n            typeof obj.pause === \"function\" &&\n            typeof obj.resume === \"function\";\n    }\n};\n\n},{}],15:[function(require,module,exports){\n\"use strict\";\nvar utf8 = require(\"./utf8\");\nvar utils = require(\"./utils\");\nvar GenericWorker = require(\"./stream/GenericWorker\");\nvar StreamHelper = require(\"./stream/StreamHelper\");\nvar defaults = require(\"./defaults\");\nvar CompressedObject = require(\"./compressedObject\");\nvar ZipObject = require(\"./zipObject\");\nvar generate = require(\"./generate\");\nvar nodejsUtils = require(\"./nodejsUtils\");\nvar NodejsStreamInputAdapter = require(\"./nodejs/NodejsStreamInputAdapter\");\n\n\n/**\n * Add a file in the current folder.\n * @private\n * @param {string} name the name of the file\n * @param {String|ArrayBuffer|Uint8Array|Buffer} data the data of the file\n * @param {Object} originalOptions the options of the file\n * @return {Object} the new file.\n */\nvar fileAdd = function(name, data, originalOptions) {\n    // be sure sub folders exist\n    var dataType = utils.getTypeOf(data),\n        parent;\n\n\n    /*\n     * Correct options.\n     */\n\n    var o = utils.extend(originalOptions || {}, defaults);\n    o.date = o.date || new Date();\n    if (o.compression !== null) {\n        o.compression = o.compression.toUpperCase();\n    }\n\n    if (typeof o.unixPermissions === \"string\") {\n        o.unixPermissions = parseInt(o.unixPermissions, 8);\n    }\n\n    // UNX_IFDIR  0040000 see zipinfo.c\n    if (o.unixPermissions && (o.unixPermissions & 0x4000)) {\n        o.dir = true;\n    }\n    // Bit 4    Directory\n    if (o.dosPermissions && (o.dosPermissions & 0x0010)) {\n        o.dir = true;\n    }\n\n    if (o.dir) {\n        name = forceTrailingSlash(name);\n    }\n    if (o.createFolders && (parent = parentFolder(name))) {\n        folderAdd.call(this, parent, true);\n    }\n\n    var isUnicodeString = dataType === \"string\" && o.binary === false && o.base64 === false;\n    if (!originalOptions || typeof originalOptions.binary === \"undefined\") {\n        o.binary = !isUnicodeString;\n    }\n\n\n    var isCompressedEmpty = (data instanceof CompressedObject) && data.uncompressedSize === 0;\n\n    if (isCompressedEmpty || o.dir || !data || data.length === 0) {\n        o.base64 = false;\n        o.binary = true;\n        data = \"\";\n        o.compression = \"STORE\";\n        dataType = \"string\";\n    }\n\n    /*\n     * Convert content to fit.\n     */\n\n    var zipObjectContent = null;\n    if (data instanceof CompressedObject || data instanceof GenericWorker) {\n        zipObjectContent = data;\n    } else if (nodejsUtils.isNode && nodejsUtils.isStream(data)) {\n        zipObjectContent = new NodejsStreamInputAdapter(name, data);\n    } else {\n        zipObjectContent = utils.prepareContent(name, data, o.binary, o.optimizedBinaryString, o.base64);\n    }\n\n    var object = new ZipObject(name, zipObjectContent, o);\n    this.files[name] = object;\n    /*\n    TODO: we can't throw an exception because we have async promises\n    (we can have a promise of a Date() for example) but returning a\n    promise is useless because file(name, data) returns the JSZip\n    object for chaining. Should we break that to allow the user\n    to catch the error ?\n\n    return external.Promise.resolve(zipObjectContent)\n    .then(function () {\n        return object;\n    });\n    */\n};\n\n/**\n * Find the parent folder of the path.\n * @private\n * @param {string} path the path to use\n * @return {string} the parent folder, or \"\"\n */\nvar parentFolder = function (path) {\n    if (path.slice(-1) === \"/\") {\n        path = path.substring(0, path.length - 1);\n    }\n    var lastSlash = path.lastIndexOf(\"/\");\n    return (lastSlash > 0) ? path.substring(0, lastSlash) : \"\";\n};\n\n/**\n * Returns the path with a slash at the end.\n * @private\n * @param {String} path the path to check.\n * @return {String} the path with a trailing slash.\n */\nvar forceTrailingSlash = function(path) {\n    // Check the name ends with a /\n    if (path.slice(-1) !== \"/\") {\n        path += \"/\"; // IE doesn't like substr(-1)\n    }\n    return path;\n};\n\n/**\n * Add a (sub) folder in the current folder.\n * @private\n * @param {string} name the folder's name\n * @param {boolean=} [createFolders] If true, automatically create sub\n *  folders. Defaults to false.\n * @return {Object} the new folder.\n */\nvar folderAdd = function(name, createFolders) {\n    createFolders = (typeof createFolders !== \"undefined\") ? createFolders : defaults.createFolders;\n\n    name = forceTrailingSlash(name);\n\n    // Does this folder already exist?\n    if (!this.files[name]) {\n        fileAdd.call(this, name, null, {\n            dir: true,\n            createFolders: createFolders\n        });\n    }\n    return this.files[name];\n};\n\n/**\n* Cross-window, cross-Node-context regular expression detection\n* @param  {Object}  object Anything\n* @return {Boolean}        true if the object is a regular expression,\n* false otherwise\n*/\nfunction isRegExp(object) {\n    return Object.prototype.toString.call(object) === \"[object RegExp]\";\n}\n\n// return the actual prototype of JSZip\nvar out = {\n    /**\n     * @see loadAsync\n     */\n    load: function() {\n        throw new Error(\"This method has been removed in JSZip 3.0, please check the upgrade guide.\");\n    },\n\n\n    /**\n     * Call a callback function for each entry at this folder level.\n     * @param {Function} cb the callback function:\n     * function (relativePath, file) {...}\n     * It takes 2 arguments : the relative path and the file.\n     */\n    forEach: function(cb) {\n        var filename, relativePath, file;\n        // ignore warning about unwanted properties because this.files is a null prototype object\n        /* eslint-disable-next-line guard-for-in */\n        for (filename in this.files) {\n            file = this.files[filename];\n            relativePath = filename.slice(this.root.length, filename.length);\n            if (relativePath && filename.slice(0, this.root.length) === this.root) { // the file is in the current root\n                cb(relativePath, file); // TODO reverse the parameters ? need to be clean AND consistent with the filter search fn...\n            }\n        }\n    },\n\n    /**\n     * Filter nested files/folders with the specified function.\n     * @param {Function} search the predicate to use :\n     * function (relativePath, file) {...}\n     * It takes 2 arguments : the relative path and the file.\n     * @return {Array} An array of matching elements.\n     */\n    filter: function(search) {\n        var result = [];\n        this.forEach(function (relativePath, entry) {\n            if (search(relativePath, entry)) { // the file matches the function\n                result.push(entry);\n            }\n\n        });\n        return result;\n    },\n\n    /**\n     * Add a file to the zip file, or search a file.\n     * @param   {string|RegExp} name The name of the file to add (if data is defined),\n     * the name of the file to find (if no data) or a regex to match files.\n     * @param   {String|ArrayBuffer|Uint8Array|Buffer} data  The file data, either raw or base64 encoded\n     * @param   {Object} o     File options\n     * @return  {JSZip|Object|Array} this JSZip object (when adding a file),\n     * a file (when searching by string) or an array of files (when searching by regex).\n     */\n    file: function(name, data, o) {\n        if (arguments.length === 1) {\n            if (isRegExp(name)) {\n                var regexp = name;\n                return this.filter(function(relativePath, file) {\n                    return !file.dir && regexp.test(relativePath);\n                });\n            }\n            else { // text\n                var obj = this.files[this.root + name];\n                if (obj && !obj.dir) {\n                    return obj;\n                } else {\n                    return null;\n                }\n            }\n        }\n        else { // more than one argument : we have data !\n            name = this.root + name;\n            fileAdd.call(this, name, data, o);\n        }\n        return this;\n    },\n\n    /**\n     * Add a directory to the zip file, or search.\n     * @param   {String|RegExp} arg The name of the directory to add, or a regex to search folders.\n     * @return  {JSZip} an object with the new directory as the root, or an array containing matching folders.\n     */\n    folder: function(arg) {\n        if (!arg) {\n            return this;\n        }\n\n        if (isRegExp(arg)) {\n            return this.filter(function(relativePath, file) {\n                return file.dir && arg.test(relativePath);\n            });\n        }\n\n        // else, name is a new folder\n        var name = this.root + arg;\n        var newFolder = folderAdd.call(this, name);\n\n        // Allow chaining by returning a new object with this folder as the root\n        var ret = this.clone();\n        ret.root = newFolder.name;\n        return ret;\n    },\n\n    /**\n     * Delete a file, or a directory and all sub-files, from the zip\n     * @param {string} name the name of the file to delete\n     * @return {JSZip} this JSZip object\n     */\n    remove: function(name) {\n        name = this.root + name;\n        var file = this.files[name];\n        if (!file) {\n            // Look for any folders\n            if (name.slice(-1) !== \"/\") {\n                name += \"/\";\n            }\n            file = this.files[name];\n        }\n\n        if (file && !file.dir) {\n            // file\n            delete this.files[name];\n        } else {\n            // maybe a folder, delete recursively\n            var kids = this.filter(function(relativePath, file) {\n                return file.name.slice(0, name.length) === name;\n            });\n            for (var i = 0; i < kids.length; i++) {\n                delete this.files[kids[i].name];\n            }\n        }\n\n        return this;\n    },\n\n    /**\n     * @deprecated This method has been removed in JSZip 3.0, please check the upgrade guide.\n     */\n    generate: function() {\n        throw new Error(\"This method has been removed in JSZip 3.0, please check the upgrade guide.\");\n    },\n\n    /**\n     * Generate the complete zip file as an internal stream.\n     * @param {Object} options the options to generate the zip file :\n     * - compression, \"STORE\" by default.\n     * - type, \"base64\" by default. Values are : string, base64, uint8array, arraybuffer, blob.\n     * @return {StreamHelper} the streamed zip file.\n     */\n    generateInternalStream: function(options) {\n        var worker, opts = {};\n        try {\n            opts = utils.extend(options || {}, {\n                streamFiles: false,\n                compression: \"STORE\",\n                compressionOptions : null,\n                type: \"\",\n                platform: \"DOS\",\n                comment: null,\n                mimeType: \"application/zip\",\n                encodeFileName: utf8.utf8encode\n            });\n\n            opts.type = opts.type.toLowerCase();\n            opts.compression = opts.compression.toUpperCase();\n\n            // \"binarystring\" is preferred but the internals use \"string\".\n            if(opts.type === \"binarystring\") {\n                opts.type = \"string\";\n            }\n\n            if (!opts.type) {\n                throw new Error(\"No output type specified.\");\n            }\n\n            utils.checkSupport(opts.type);\n\n            // accept nodejs `process.platform`\n            if(\n                opts.platform === \"darwin\" ||\n                opts.platform === \"freebsd\" ||\n                opts.platform === \"linux\" ||\n                opts.platform === \"sunos\"\n            ) {\n                opts.platform = \"UNIX\";\n            }\n            if (opts.platform === \"win32\") {\n                opts.platform = \"DOS\";\n            }\n\n            var comment = opts.comment || this.comment || \"\";\n            worker = generate.generateWorker(this, opts, comment);\n        } catch (e) {\n            worker = new GenericWorker(\"error\");\n            worker.error(e);\n        }\n        return new StreamHelper(worker, opts.type || \"string\", opts.mimeType);\n    },\n    /**\n     * Generate the complete zip file asynchronously.\n     * @see generateInternalStream\n     */\n    generateAsync: function(options, onUpdate) {\n        return this.generateInternalStream(options).accumulate(onUpdate);\n    },\n    /**\n     * Generate the complete zip file asynchronously.\n     * @see generateInternalStream\n     */\n    generateNodeStream: function(options, onUpdate) {\n        options = options || {};\n        if (!options.type) {\n            options.type = \"nodebuffer\";\n        }\n        return this.generateInternalStream(options).toNodejsStream(onUpdate);\n    }\n};\nmodule.exports = out;\n\n},{\"./compressedObject\":2,\"./defaults\":5,\"./generate\":9,\"./nodejs/NodejsStreamInputAdapter\":12,\"./nodejsUtils\":14,\"./stream/GenericWorker\":28,\"./stream/StreamHelper\":29,\"./utf8\":31,\"./utils\":32,\"./zipObject\":35}],16:[function(require,module,exports){\n\"use strict\";\n/*\n * This file is used by module bundlers (browserify/webpack/etc) when\n * including a stream implementation. We use \"readable-stream\" to get a\n * consistent behavior between nodejs versions but bundlers often have a shim\n * for \"stream\". Using this shim greatly improve the compatibility and greatly\n * reduce the final size of the bundle (only one stream implementation, not\n * two).\n */\nmodule.exports = require(\"stream\");\n\n},{\"stream\":undefined}],17:[function(require,module,exports){\n\"use strict\";\nvar DataReader = require(\"./DataReader\");\nvar utils = require(\"../utils\");\n\nfunction ArrayReader(data) {\n    DataReader.call(this, data);\n    for(var i = 0; i < this.data.length; i++) {\n        data[i] = data[i] & 0xFF;\n    }\n}\nutils.inherits(ArrayReader, DataReader);\n/**\n * @see DataReader.byteAt\n */\nArrayReader.prototype.byteAt = function(i) {\n    return this.data[this.zero + i];\n};\n/**\n * @see DataReader.lastIndexOfSignature\n */\nArrayReader.prototype.lastIndexOfSignature = function(sig) {\n    var sig0 = sig.charCodeAt(0),\n        sig1 = sig.charCodeAt(1),\n        sig2 = sig.charCodeAt(2),\n        sig3 = sig.charCodeAt(3);\n    for (var i = this.length - 4; i >= 0; --i) {\n        if (this.data[i] === sig0 && this.data[i + 1] === sig1 && this.data[i + 2] === sig2 && this.data[i + 3] === sig3) {\n            return i - this.zero;\n        }\n    }\n\n    return -1;\n};\n/**\n * @see DataReader.readAndCheckSignature\n */\nArrayReader.prototype.readAndCheckSignature = function (sig) {\n    var sig0 = sig.charCodeAt(0),\n        sig1 = sig.charCodeAt(1),\n        sig2 = sig.charCodeAt(2),\n        sig3 = sig.charCodeAt(3),\n        data = this.readData(4);\n    return sig0 === data[0] && sig1 === data[1] && sig2 === data[2] && sig3 === data[3];\n};\n/**\n * @see DataReader.readData\n */\nArrayReader.prototype.readData = function(size) {\n    this.checkOffset(size);\n    if(size === 0) {\n        return [];\n    }\n    var result = this.data.slice(this.zero + this.index, this.zero + this.index + size);\n    this.index += size;\n    return result;\n};\nmodule.exports = ArrayReader;\n\n},{\"../utils\":32,\"./DataReader\":18}],18:[function(require,module,exports){\n\"use strict\";\nvar utils = require(\"../utils\");\n\nfunction DataReader(data) {\n    this.data = data; // type : see implementation\n    this.length = data.length;\n    this.index = 0;\n    this.zero = 0;\n}\nDataReader.prototype = {\n    /**\n     * Check that the offset will not go too far.\n     * @param {string} offset the additional offset to check.\n     * @throws {Error} an Error if the offset is out of bounds.\n     */\n    checkOffset: function(offset) {\n        this.checkIndex(this.index + offset);\n    },\n    /**\n     * Check that the specified index will not be too far.\n     * @param {string} newIndex the index to check.\n     * @throws {Error} an Error if the index is out of bounds.\n     */\n    checkIndex: function(newIndex) {\n        if (this.length < this.zero + newIndex || newIndex < 0) {\n            throw new Error(\"End of data reached (data length = \" + this.length + \", asked index = \" + (newIndex) + \"). Corrupted zip ?\");\n        }\n    },\n    /**\n     * Change the index.\n     * @param {number} newIndex The new index.\n     * @throws {Error} if the new index is out of the data.\n     */\n    setIndex: function(newIndex) {\n        this.checkIndex(newIndex);\n        this.index = newIndex;\n    },\n    /**\n     * Skip the next n bytes.\n     * @param {number} n the number of bytes to skip.\n     * @throws {Error} if the new index is out of the data.\n     */\n    skip: function(n) {\n        this.setIndex(this.index + n);\n    },\n    /**\n     * Get the byte at the specified index.\n     * @param {number} i the index to use.\n     * @return {number} a byte.\n     */\n    byteAt: function() {\n        // see implementations\n    },\n    /**\n     * Get the next number with a given byte size.\n     * @param {number} size the number of bytes to read.\n     * @return {number} the corresponding number.\n     */\n    readInt: function(size) {\n        var result = 0,\n            i;\n        this.checkOffset(size);\n        for (i = this.index + size - 1; i >= this.index; i--) {\n            result = (result << 8) + this.byteAt(i);\n        }\n        this.index += size;\n        return result;\n    },\n    /**\n     * Get the next string with a given byte size.\n     * @param {number} size the number of bytes to read.\n     * @return {string} the corresponding string.\n     */\n    readString: function(size) {\n        return utils.transformTo(\"string\", this.readData(size));\n    },\n    /**\n     * Get raw data without conversion, <size> bytes.\n     * @param {number} size the number of bytes to read.\n     * @return {Object} the raw data, implementation specific.\n     */\n    readData: function() {\n        // see implementations\n    },\n    /**\n     * Find the last occurrence of a zip signature (4 bytes).\n     * @param {string} sig the signature to find.\n     * @return {number} the index of the last occurrence, -1 if not found.\n     */\n    lastIndexOfSignature: function() {\n        // see implementations\n    },\n    /**\n     * Read the signature (4 bytes) at the current position and compare it with sig.\n     * @param {string} sig the expected signature\n     * @return {boolean} true if the signature matches, false otherwise.\n     */\n    readAndCheckSignature: function() {\n        // see implementations\n    },\n    /**\n     * Get the next date.\n     * @return {Date} the date.\n     */\n    readDate: function() {\n        var dostime = this.readInt(4);\n        return new Date(Date.UTC(\n            ((dostime >> 25) & 0x7f) + 1980, // year\n            ((dostime >> 21) & 0x0f) - 1, // month\n            (dostime >> 16) & 0x1f, // day\n            (dostime >> 11) & 0x1f, // hour\n            (dostime >> 5) & 0x3f, // minute\n            (dostime & 0x1f) << 1)); // second\n    }\n};\nmodule.exports = DataReader;\n\n},{\"../utils\":32}],19:[function(require,module,exports){\n\"use strict\";\nvar Uint8ArrayReader = require(\"./Uint8ArrayReader\");\nvar utils = require(\"../utils\");\n\nfunction NodeBufferReader(data) {\n    Uint8ArrayReader.call(this, data);\n}\nutils.inherits(NodeBufferReader, Uint8ArrayReader);\n\n/**\n * @see DataReader.readData\n */\nNodeBufferReader.prototype.readData = function(size) {\n    this.checkOffset(size);\n    var result = this.data.slice(this.zero + this.index, this.zero + this.index + size);\n    this.index += size;\n    return result;\n};\nmodule.exports = NodeBufferReader;\n\n},{\"../utils\":32,\"./Uint8ArrayReader\":21}],20:[function(require,module,exports){\n\"use strict\";\nvar DataReader = require(\"./DataReader\");\nvar utils = require(\"../utils\");\n\nfunction StringReader(data) {\n    DataReader.call(this, data);\n}\nutils.inherits(StringReader, DataReader);\n/**\n * @see DataReader.byteAt\n */\nStringReader.prototype.byteAt = function(i) {\n    return this.data.charCodeAt(this.zero + i);\n};\n/**\n * @see DataReader.lastIndexOfSignature\n */\nStringReader.prototype.lastIndexOfSignature = function(sig) {\n    return this.data.lastIndexOf(sig) - this.zero;\n};\n/**\n * @see DataReader.readAndCheckSignature\n */\nStringReader.prototype.readAndCheckSignature = function (sig) {\n    var data = this.readData(4);\n    return sig === data;\n};\n/**\n * @see DataReader.readData\n */\nStringReader.prototype.readData = function(size) {\n    this.checkOffset(size);\n    // this will work because the constructor applied the \"& 0xff\" mask.\n    var result = this.data.slice(this.zero + this.index, this.zero + this.index + size);\n    this.index += size;\n    return result;\n};\nmodule.exports = StringReader;\n\n},{\"../utils\":32,\"./DataReader\":18}],21:[function(require,module,exports){\n\"use strict\";\nvar ArrayReader = require(\"./ArrayReader\");\nvar utils = require(\"../utils\");\n\nfunction Uint8ArrayReader(data) {\n    ArrayReader.call(this, data);\n}\nutils.inherits(Uint8ArrayReader, ArrayReader);\n/**\n * @see DataReader.readData\n */\nUint8ArrayReader.prototype.readData = function(size) {\n    this.checkOffset(size);\n    if(size === 0) {\n        // in IE10, when using subarray(idx, idx), we get the array [0x00] instead of [].\n        return new Uint8Array(0);\n    }\n    var result = this.data.subarray(this.zero + this.index, this.zero + this.index + size);\n    this.index += size;\n    return result;\n};\nmodule.exports = Uint8ArrayReader;\n\n},{\"../utils\":32,\"./ArrayReader\":17}],22:[function(require,module,exports){\n\"use strict\";\n\nvar utils = require(\"../utils\");\nvar support = require(\"../support\");\nvar ArrayReader = require(\"./ArrayReader\");\nvar StringReader = require(\"./StringReader\");\nvar NodeBufferReader = require(\"./NodeBufferReader\");\nvar Uint8ArrayReader = require(\"./Uint8ArrayReader\");\n\n/**\n * Create a reader adapted to the data.\n * @param {String|ArrayBuffer|Uint8Array|Buffer} data the data to read.\n * @return {DataReader} the data reader.\n */\nmodule.exports = function (data) {\n    var type = utils.getTypeOf(data);\n    utils.checkSupport(type);\n    if (type === \"string\" && !support.uint8array) {\n        return new StringReader(data);\n    }\n    if (type === \"nodebuffer\") {\n        return new NodeBufferReader(data);\n    }\n    if (support.uint8array) {\n        return new Uint8ArrayReader(utils.transformTo(\"uint8array\", data));\n    }\n    return new ArrayReader(utils.transformTo(\"array\", data));\n};\n\n},{\"../support\":30,\"../utils\":32,\"./ArrayReader\":17,\"./NodeBufferReader\":19,\"./StringReader\":20,\"./Uint8ArrayReader\":21}],23:[function(require,module,exports){\n\"use strict\";\nexports.LOCAL_FILE_HEADER = \"PK\\x03\\x04\";\nexports.CENTRAL_FILE_HEADER = \"PK\\x01\\x02\";\nexports.CENTRAL_DIRECTORY_END = \"PK\\x05\\x06\";\nexports.ZIP64_CENTRAL_DIRECTORY_LOCATOR = \"PK\\x06\\x07\";\nexports.ZIP64_CENTRAL_DIRECTORY_END = \"PK\\x06\\x06\";\nexports.DATA_DESCRIPTOR = \"PK\\x07\\x08\";\n\n},{}],24:[function(require,module,exports){\n\"use strict\";\n\nvar GenericWorker = require(\"./GenericWorker\");\nvar utils = require(\"../utils\");\n\n/**\n * A worker which convert chunks to a specified type.\n * @constructor\n * @param {String} destType the destination type.\n */\nfunction ConvertWorker(destType) {\n    GenericWorker.call(this, \"ConvertWorker to \" + destType);\n    this.destType = destType;\n}\nutils.inherits(ConvertWorker, GenericWorker);\n\n/**\n * @see GenericWorker.processChunk\n */\nConvertWorker.prototype.processChunk = function (chunk) {\n    this.push({\n        data : utils.transformTo(this.destType, chunk.data),\n        meta : chunk.meta\n    });\n};\nmodule.exports = ConvertWorker;\n\n},{\"../utils\":32,\"./GenericWorker\":28}],25:[function(require,module,exports){\n\"use strict\";\n\nvar GenericWorker = require(\"./GenericWorker\");\nvar crc32 = require(\"../crc32\");\nvar utils = require(\"../utils\");\n\n/**\n * A worker which calculate the crc32 of the data flowing through.\n * @constructor\n */\nfunction Crc32Probe() {\n    GenericWorker.call(this, \"Crc32Probe\");\n    this.withStreamInfo(\"crc32\", 0);\n}\nutils.inherits(Crc32Probe, GenericWorker);\n\n/**\n * @see GenericWorker.processChunk\n */\nCrc32Probe.prototype.processChunk = function (chunk) {\n    this.streamInfo.crc32 = crc32(chunk.data, this.streamInfo.crc32 || 0);\n    this.push(chunk);\n};\nmodule.exports = Crc32Probe;\n\n},{\"../crc32\":4,\"../utils\":32,\"./GenericWorker\":28}],26:[function(require,module,exports){\n\"use strict\";\n\nvar utils = require(\"../utils\");\nvar GenericWorker = require(\"./GenericWorker\");\n\n/**\n * A worker which calculate the total length of the data flowing through.\n * @constructor\n * @param {String} propName the name used to expose the length\n */\nfunction DataLengthProbe(propName) {\n    GenericWorker.call(this, \"DataLengthProbe for \" + propName);\n    this.propName = propName;\n    this.withStreamInfo(propName, 0);\n}\nutils.inherits(DataLengthProbe, GenericWorker);\n\n/**\n * @see GenericWorker.processChunk\n */\nDataLengthProbe.prototype.processChunk = function (chunk) {\n    if(chunk) {\n        var length = this.streamInfo[this.propName] || 0;\n        this.streamInfo[this.propName] = length + chunk.data.length;\n    }\n    GenericWorker.prototype.processChunk.call(this, chunk);\n};\nmodule.exports = DataLengthProbe;\n\n\n},{\"../utils\":32,\"./GenericWorker\":28}],27:[function(require,module,exports){\n\"use strict\";\n\nvar utils = require(\"../utils\");\nvar GenericWorker = require(\"./GenericWorker\");\n\n// the size of the generated chunks\n// TODO expose this as a public variable\nvar DEFAULT_BLOCK_SIZE = 16 * 1024;\n\n/**\n * A worker that reads a content and emits chunks.\n * @constructor\n * @param {Promise} dataP the promise of the data to split\n */\nfunction DataWorker(dataP) {\n    GenericWorker.call(this, \"DataWorker\");\n    var self = this;\n    this.dataIsReady = false;\n    this.index = 0;\n    this.max = 0;\n    this.data = null;\n    this.type = \"\";\n\n    this._tickScheduled = false;\n\n    dataP.then(function (data) {\n        self.dataIsReady = true;\n        self.data = data;\n        self.max = data && data.length || 0;\n        self.type = utils.getTypeOf(data);\n        if(!self.isPaused) {\n            self._tickAndRepeat();\n        }\n    }, function (e) {\n        self.error(e);\n    });\n}\n\nutils.inherits(DataWorker, GenericWorker);\n\n/**\n * @see GenericWorker.cleanUp\n */\nDataWorker.prototype.cleanUp = function () {\n    GenericWorker.prototype.cleanUp.call(this);\n    this.data = null;\n};\n\n/**\n * @see GenericWorker.resume\n */\nDataWorker.prototype.resume = function () {\n    if(!GenericWorker.prototype.resume.call(this)) {\n        return false;\n    }\n\n    if (!this._tickScheduled && this.dataIsReady) {\n        this._tickScheduled = true;\n        utils.delay(this._tickAndRepeat, [], this);\n    }\n    return true;\n};\n\n/**\n * Trigger a tick a schedule an other call to this function.\n */\nDataWorker.prototype._tickAndRepeat = function() {\n    this._tickScheduled = false;\n    if(this.isPaused || this.isFinished) {\n        return;\n    }\n    this._tick();\n    if(!this.isFinished) {\n        utils.delay(this._tickAndRepeat, [], this);\n        this._tickScheduled = true;\n    }\n};\n\n/**\n * Read and push a chunk.\n */\nDataWorker.prototype._tick = function() {\n\n    if(this.isPaused || this.isFinished) {\n        return false;\n    }\n\n    var size = DEFAULT_BLOCK_SIZE;\n    var data = null, nextIndex = Math.min(this.max, this.index + size);\n    if (this.index >= this.max) {\n        // EOF\n        return this.end();\n    } else {\n        switch(this.type) {\n        case \"string\":\n            data = this.data.substring(this.index, nextIndex);\n            break;\n        case \"uint8array\":\n            data = this.data.subarray(this.index, nextIndex);\n            break;\n        case \"array\":\n        case \"nodebuffer\":\n            data = this.data.slice(this.index, nextIndex);\n            break;\n        }\n        this.index = nextIndex;\n        return this.push({\n            data : data,\n            meta : {\n                percent : this.max ? this.index / this.max * 100 : 0\n            }\n        });\n    }\n};\n\nmodule.exports = DataWorker;\n\n},{\"../utils\":32,\"./GenericWorker\":28}],28:[function(require,module,exports){\n\"use strict\";\n\n/**\n * A worker that does nothing but passing chunks to the next one. This is like\n * a nodejs stream but with some differences. On the good side :\n * - it works on IE 6-9 without any issue / polyfill\n * - it weights less than the full dependencies bundled with browserify\n * - it forwards errors (no need to declare an error handler EVERYWHERE)\n *\n * A chunk is an object with 2 attributes : `meta` and `data`. The former is an\n * object containing anything (`percent` for example), see each worker for more\n * details. The latter is the real data (String, Uint8Array, etc).\n *\n * @constructor\n * @param {String} name the name of the stream (mainly used for debugging purposes)\n */\nfunction GenericWorker(name) {\n    // the name of the worker\n    this.name = name || \"default\";\n    // an object containing metadata about the workers chain\n    this.streamInfo = {};\n    // an error which happened when the worker was paused\n    this.generatedError = null;\n    // an object containing metadata to be merged by this worker into the general metadata\n    this.extraStreamInfo = {};\n    // true if the stream is paused (and should not do anything), false otherwise\n    this.isPaused = true;\n    // true if the stream is finished (and should not do anything), false otherwise\n    this.isFinished = false;\n    // true if the stream is locked to prevent further structure updates (pipe), false otherwise\n    this.isLocked = false;\n    // the event listeners\n    this._listeners = {\n        \"data\":[],\n        \"end\":[],\n        \"error\":[]\n    };\n    // the previous worker, if any\n    this.previous = null;\n}\n\nGenericWorker.prototype = {\n    /**\n     * Push a chunk to the next workers.\n     * @param {Object} chunk the chunk to push\n     */\n    push : function (chunk) {\n        this.emit(\"data\", chunk);\n    },\n    /**\n     * End the stream.\n     * @return {Boolean} true if this call ended the worker, false otherwise.\n     */\n    end : function () {\n        if (this.isFinished) {\n            return false;\n        }\n\n        this.flush();\n        try {\n            this.emit(\"end\");\n            this.cleanUp();\n            this.isFinished = true;\n        } catch (e) {\n            this.emit(\"error\", e);\n        }\n        return true;\n    },\n    /**\n     * End the stream with an error.\n     * @param {Error} e the error which caused the premature end.\n     * @return {Boolean} true if this call ended the worker with an error, false otherwise.\n     */\n    error : function (e) {\n        if (this.isFinished) {\n            return false;\n        }\n\n        if(this.isPaused) {\n            this.generatedError = e;\n        } else {\n            this.isFinished = true;\n\n            this.emit(\"error\", e);\n\n            // in the workers chain exploded in the middle of the chain,\n            // the error event will go downward but we also need to notify\n            // workers upward that there has been an error.\n            if(this.previous) {\n                this.previous.error(e);\n            }\n\n            this.cleanUp();\n        }\n        return true;\n    },\n    /**\n     * Add a callback on an event.\n     * @param {String} name the name of the event (data, end, error)\n     * @param {Function} listener the function to call when the event is triggered\n     * @return {GenericWorker} the current object for chainability\n     */\n    on : function (name, listener) {\n        this._listeners[name].push(listener);\n        return this;\n    },\n    /**\n     * Clean any references when a worker is ending.\n     */\n    cleanUp : function () {\n        this.streamInfo = this.generatedError = this.extraStreamInfo = null;\n        this._listeners = [];\n    },\n    /**\n     * Trigger an event. This will call registered callback with the provided arg.\n     * @param {String} name the name of the event (data, end, error)\n     * @param {Object} arg the argument to call the callback with.\n     */\n    emit : function (name, arg) {\n        if (this._listeners[name]) {\n            for(var i = 0; i < this._listeners[name].length; i++) {\n                this._listeners[name][i].call(this, arg);\n            }\n        }\n    },\n    /**\n     * Chain a worker with an other.\n     * @param {Worker} next the worker receiving events from the current one.\n     * @return {worker} the next worker for chainability\n     */\n    pipe : function (next) {\n        return next.registerPrevious(this);\n    },\n    /**\n     * Same as `pipe` in the other direction.\n     * Using an API with `pipe(next)` is very easy.\n     * Implementing the API with the point of view of the next one registering\n     * a source is easier, see the ZipFileWorker.\n     * @param {Worker} previous the previous worker, sending events to this one\n     * @return {Worker} the current worker for chainability\n     */\n    registerPrevious : function (previous) {\n        if (this.isLocked) {\n            throw new Error(\"The stream '\" + this + \"' has already been used.\");\n        }\n\n        // sharing the streamInfo...\n        this.streamInfo = previous.streamInfo;\n        // ... and adding our own bits\n        this.mergeStreamInfo();\n        this.previous =  previous;\n        var self = this;\n        previous.on(\"data\", function (chunk) {\n            self.processChunk(chunk);\n        });\n        previous.on(\"end\", function () {\n            self.end();\n        });\n        previous.on(\"error\", function (e) {\n            self.error(e);\n        });\n        return this;\n    },\n    /**\n     * Pause the stream so it doesn't send events anymore.\n     * @return {Boolean} true if this call paused the worker, false otherwise.\n     */\n    pause : function () {\n        if(this.isPaused || this.isFinished) {\n            return false;\n        }\n        this.isPaused = true;\n\n        if(this.previous) {\n            this.previous.pause();\n        }\n        return true;\n    },\n    /**\n     * Resume a paused stream.\n     * @return {Boolean} true if this call resumed the worker, false otherwise.\n     */\n    resume : function () {\n        if(!this.isPaused || this.isFinished) {\n            return false;\n        }\n        this.isPaused = false;\n\n        // if true, the worker tried to resume but failed\n        var withError = false;\n        if(this.generatedError) {\n            this.error(this.generatedError);\n            withError = true;\n        }\n        if(this.previous) {\n            this.previous.resume();\n        }\n\n        return !withError;\n    },\n    /**\n     * Flush any remaining bytes as the stream is ending.\n     */\n    flush : function () {},\n    /**\n     * Process a chunk. This is usually the method overridden.\n     * @param {Object} chunk the chunk to process.\n     */\n    processChunk : function(chunk) {\n        this.push(chunk);\n    },\n    /**\n     * Add a key/value to be added in the workers chain streamInfo once activated.\n     * @param {String} key the key to use\n     * @param {Object} value the associated value\n     * @return {Worker} the current worker for chainability\n     */\n    withStreamInfo : function (key, value) {\n        this.extraStreamInfo[key] = value;\n        this.mergeStreamInfo();\n        return this;\n    },\n    /**\n     * Merge this worker's streamInfo into the chain's streamInfo.\n     */\n    mergeStreamInfo : function () {\n        for(var key in this.extraStreamInfo) {\n            if (!Object.prototype.hasOwnProperty.call(this.extraStreamInfo, key)) {\n                continue;\n            }\n            this.streamInfo[key] = this.extraStreamInfo[key];\n        }\n    },\n\n    /**\n     * Lock the stream to prevent further updates on the workers chain.\n     * After calling this method, all calls to pipe will fail.\n     */\n    lock: function () {\n        if (this.isLocked) {\n            throw new Error(\"The stream '\" + this + \"' has already been used.\");\n        }\n        this.isLocked = true;\n        if (this.previous) {\n            this.previous.lock();\n        }\n    },\n\n    /**\n     *\n     * Pretty print the workers chain.\n     */\n    toString : function () {\n        var me = \"Worker \" + this.name;\n        if (this.previous) {\n            return this.previous + \" -> \" + me;\n        } else {\n            return me;\n        }\n    }\n};\n\nmodule.exports = GenericWorker;\n\n},{}],29:[function(require,module,exports){\n\"use strict\";\n\nvar utils = require(\"../utils\");\nvar ConvertWorker = require(\"./ConvertWorker\");\nvar GenericWorker = require(\"./GenericWorker\");\nvar base64 = require(\"../base64\");\nvar support = require(\"../support\");\nvar external = require(\"../external\");\n\nvar NodejsStreamOutputAdapter = null;\nif (support.nodestream) {\n    try {\n        NodejsStreamOutputAdapter = require(\"../nodejs/NodejsStreamOutputAdapter\");\n    } catch(e) {\n        // ignore\n    }\n}\n\n/**\n * Apply the final transformation of the data. If the user wants a Blob for\n * example, it's easier to work with an U8intArray and finally do the\n * ArrayBuffer/Blob conversion.\n * @param {String} type the name of the final type\n * @param {String|Uint8Array|Buffer} content the content to transform\n * @param {String} mimeType the mime type of the content, if applicable.\n * @return {String|Uint8Array|ArrayBuffer|Buffer|Blob} the content in the right format.\n */\nfunction transformZipOutput(type, content, mimeType) {\n    switch(type) {\n    case \"blob\" :\n        return utils.newBlob(utils.transformTo(\"arraybuffer\", content), mimeType);\n    case \"base64\" :\n        return base64.encode(content);\n    default :\n        return utils.transformTo(type, content);\n    }\n}\n\n/**\n * Concatenate an array of data of the given type.\n * @param {String} type the type of the data in the given array.\n * @param {Array} dataArray the array containing the data chunks to concatenate\n * @return {String|Uint8Array|Buffer} the concatenated data\n * @throws Error if the asked type is unsupported\n */\nfunction concat (type, dataArray) {\n    var i, index = 0, res = null, totalLength = 0;\n    for(i = 0; i < dataArray.length; i++) {\n        totalLength += dataArray[i].length;\n    }\n    switch(type) {\n    case \"string\":\n        return dataArray.join(\"\");\n    case \"array\":\n        return Array.prototype.concat.apply([], dataArray);\n    case \"uint8array\":\n        res = new Uint8Array(totalLength);\n        for(i = 0; i < dataArray.length; i++) {\n            res.set(dataArray[i], index);\n            index += dataArray[i].length;\n        }\n        return res;\n    case \"nodebuffer\":\n        return Buffer.concat(dataArray);\n    default:\n        throw new Error(\"concat : unsupported type '\"  + type + \"'\");\n    }\n}\n\n/**\n * Listen a StreamHelper, accumulate its content and concatenate it into a\n * complete block.\n * @param {StreamHelper} helper the helper to use.\n * @param {Function} updateCallback a callback called on each update. Called\n * with one arg :\n * - the metadata linked to the update received.\n * @return Promise the promise for the accumulation.\n */\nfunction accumulate(helper, updateCallback) {\n    return new external.Promise(function (resolve, reject){\n        var dataArray = [];\n        var chunkType = helper._internalType,\n            resultType = helper._outputType,\n            mimeType = helper._mimeType;\n        helper\n            .on(\"data\", function (data, meta) {\n                dataArray.push(data);\n                if(updateCallback) {\n                    updateCallback(meta);\n                }\n            })\n            .on(\"error\", function(err) {\n                dataArray = [];\n                reject(err);\n            })\n            .on(\"end\", function (){\n                try {\n                    var result = transformZipOutput(resultType, concat(chunkType, dataArray), mimeType);\n                    resolve(result);\n                } catch (e) {\n                    reject(e);\n                }\n                dataArray = [];\n            })\n            .resume();\n    });\n}\n\n/**\n * An helper to easily use workers outside of JSZip.\n * @constructor\n * @param {Worker} worker the worker to wrap\n * @param {String} outputType the type of data expected by the use\n * @param {String} mimeType the mime type of the content, if applicable.\n */\nfunction StreamHelper(worker, outputType, mimeType) {\n    var internalType = outputType;\n    switch(outputType) {\n    case \"blob\":\n    case \"arraybuffer\":\n        internalType = \"uint8array\";\n        break;\n    case \"base64\":\n        internalType = \"string\";\n        break;\n    }\n\n    try {\n        // the type used internally\n        this._internalType = internalType;\n        // the type used to output results\n        this._outputType = outputType;\n        // the mime type\n        this._mimeType = mimeType;\n        utils.checkSupport(internalType);\n        this._worker = worker.pipe(new ConvertWorker(internalType));\n        // the last workers can be rewired without issues but we need to\n        // prevent any updates on previous workers.\n        worker.lock();\n    } catch(e) {\n        this._worker = new GenericWorker(\"error\");\n        this._worker.error(e);\n    }\n}\n\nStreamHelper.prototype = {\n    /**\n     * Listen a StreamHelper, accumulate its content and concatenate it into a\n     * complete block.\n     * @param {Function} updateCb the update callback.\n     * @return Promise the promise for the accumulation.\n     */\n    accumulate : function (updateCb) {\n        return accumulate(this, updateCb);\n    },\n    /**\n     * Add a listener on an event triggered on a stream.\n     * @param {String} evt the name of the event\n     * @param {Function} fn the listener\n     * @return {StreamHelper} the current helper.\n     */\n    on : function (evt, fn) {\n        var self = this;\n\n        if(evt === \"data\") {\n            this._worker.on(evt, function (chunk) {\n                fn.call(self, chunk.data, chunk.meta);\n            });\n        } else {\n            this._worker.on(evt, function () {\n                utils.delay(fn, arguments, self);\n            });\n        }\n        return this;\n    },\n    /**\n     * Resume the flow of chunks.\n     * @return {StreamHelper} the current helper.\n     */\n    resume : function () {\n        utils.delay(this._worker.resume, [], this._worker);\n        return this;\n    },\n    /**\n     * Pause the flow of chunks.\n     * @return {StreamHelper} the current helper.\n     */\n    pause : function () {\n        this._worker.pause();\n        return this;\n    },\n    /**\n     * Return a nodejs stream for this helper.\n     * @param {Function} updateCb the update callback.\n     * @return {NodejsStreamOutputAdapter} the nodejs stream.\n     */\n    toNodejsStream : function (updateCb) {\n        utils.checkSupport(\"nodestream\");\n        if (this._outputType !== \"nodebuffer\") {\n            // an object stream containing blob/arraybuffer/uint8array/string\n            // is strange and I don't know if it would be useful.\n            // I you find this comment and have a good usecase, please open a\n            // bug report !\n            throw new Error(this._outputType + \" is not supported by this method\");\n        }\n\n        return new NodejsStreamOutputAdapter(this, {\n            objectMode : this._outputType !== \"nodebuffer\"\n        }, updateCb);\n    }\n};\n\n\nmodule.exports = StreamHelper;\n\n},{\"../base64\":1,\"../external\":6,\"../nodejs/NodejsStreamOutputAdapter\":13,\"../support\":30,\"../utils\":32,\"./ConvertWorker\":24,\"./GenericWorker\":28}],30:[function(require,module,exports){\n\"use strict\";\n\nexports.base64 = true;\nexports.array = true;\nexports.string = true;\nexports.arraybuffer = typeof ArrayBuffer !== \"undefined\" && typeof Uint8Array !== \"undefined\";\nexports.nodebuffer = typeof Buffer !== \"undefined\";\n// contains true if JSZip can read/generate Uint8Array, false otherwise.\nexports.uint8array = typeof Uint8Array !== \"undefined\";\n\nif (typeof ArrayBuffer === \"undefined\") {\n    exports.blob = false;\n}\nelse {\n    var buffer = new ArrayBuffer(0);\n    try {\n        exports.blob = new Blob([buffer], {\n            type: \"application/zip\"\n        }).size === 0;\n    }\n    catch (e) {\n        try {\n            var Builder = self.BlobBuilder || self.WebKitBlobBuilder || self.MozBlobBuilder || self.MSBlobBuilder;\n            var builder = new Builder();\n            builder.append(buffer);\n            exports.blob = builder.getBlob(\"application/zip\").size === 0;\n        }\n        catch (e) {\n            exports.blob = false;\n        }\n    }\n}\n\ntry {\n    exports.nodestream = !!require(\"readable-stream\").Readable;\n} catch(e) {\n    exports.nodestream = false;\n}\n\n},{\"readable-stream\":16}],31:[function(require,module,exports){\n\"use strict\";\n\nvar utils = require(\"./utils\");\nvar support = require(\"./support\");\nvar nodejsUtils = require(\"./nodejsUtils\");\nvar GenericWorker = require(\"./stream/GenericWorker\");\n\n/**\n * The following functions come from pako, from pako/lib/utils/strings\n * released under the MIT license, see pako https://github.com/nodeca/pako/\n */\n\n// Table with utf8 lengths (calculated by first byte of sequence)\n// Note, that 5 & 6-byte values and some 4-byte values can not be represented in JS,\n// because max possible codepoint is 0x10ffff\nvar _utf8len = new Array(256);\nfor (var i=0; i<256; i++) {\n    _utf8len[i] = (i >= 252 ? 6 : i >= 248 ? 5 : i >= 240 ? 4 : i >= 224 ? 3 : i >= 192 ? 2 : 1);\n}\n_utf8len[254]=_utf8len[254]=1; // Invalid sequence start\n\n// convert string to array (typed, when possible)\nvar string2buf = function (str) {\n    var buf, c, c2, m_pos, i, str_len = str.length, buf_len = 0;\n\n    // count binary size\n    for (m_pos = 0; m_pos < str_len; m_pos++) {\n        c = str.charCodeAt(m_pos);\n        if ((c & 0xfc00) === 0xd800 && (m_pos+1 < str_len)) {\n            c2 = str.charCodeAt(m_pos+1);\n            if ((c2 & 0xfc00) === 0xdc00) {\n                c = 0x10000 + ((c - 0xd800) << 10) + (c2 - 0xdc00);\n                m_pos++;\n            }\n        }\n        buf_len += c < 0x80 ? 1 : c < 0x800 ? 2 : c < 0x10000 ? 3 : 4;\n    }\n\n    // allocate buffer\n    if (support.uint8array) {\n        buf = new Uint8Array(buf_len);\n    } else {\n        buf = new Array(buf_len);\n    }\n\n    // convert\n    for (i=0, m_pos = 0; i < buf_len; m_pos++) {\n        c = str.charCodeAt(m_pos);\n        if ((c & 0xfc00) === 0xd800 && (m_pos+1 < str_len)) {\n            c2 = str.charCodeAt(m_pos+1);\n            if ((c2 & 0xfc00) === 0xdc00) {\n                c = 0x10000 + ((c - 0xd800) << 10) + (c2 - 0xdc00);\n                m_pos++;\n            }\n        }\n        if (c < 0x80) {\n            /* one byte */\n            buf[i++] = c;\n        } else if (c < 0x800) {\n            /* two bytes */\n            buf[i++] = 0xC0 | (c >>> 6);\n            buf[i++] = 0x80 | (c & 0x3f);\n        } else if (c < 0x10000) {\n            /* three bytes */\n            buf[i++] = 0xE0 | (c >>> 12);\n            buf[i++] = 0x80 | (c >>> 6 & 0x3f);\n            buf[i++] = 0x80 | (c & 0x3f);\n        } else {\n            /* four bytes */\n            buf[i++] = 0xf0 | (c >>> 18);\n            buf[i++] = 0x80 | (c >>> 12 & 0x3f);\n            buf[i++] = 0x80 | (c >>> 6 & 0x3f);\n            buf[i++] = 0x80 | (c & 0x3f);\n        }\n    }\n\n    return buf;\n};\n\n// Calculate max possible position in utf8 buffer,\n// that will not break sequence. If that's not possible\n// - (very small limits) return max size as is.\n//\n// buf[] - utf8 bytes array\n// max   - length limit (mandatory);\nvar utf8border = function(buf, max) {\n    var pos;\n\n    max = max || buf.length;\n    if (max > buf.length) { max = buf.length; }\n\n    // go back from last position, until start of sequence found\n    pos = max-1;\n    while (pos >= 0 && (buf[pos] & 0xC0) === 0x80) { pos--; }\n\n    // Fuckup - very small and broken sequence,\n    // return max, because we should return something anyway.\n    if (pos < 0) { return max; }\n\n    // If we came to start of buffer - that means vuffer is too small,\n    // return max too.\n    if (pos === 0) { return max; }\n\n    return (pos + _utf8len[buf[pos]] > max) ? pos : max;\n};\n\n// convert array to string\nvar buf2string = function (buf) {\n    var i, out, c, c_len;\n    var len = buf.length;\n\n    // Reserve max possible length (2 words per char)\n    // NB: by unknown reasons, Array is significantly faster for\n    //     String.fromCharCode.apply than Uint16Array.\n    var utf16buf = new Array(len*2);\n\n    for (out=0, i=0; i<len;) {\n        c = buf[i++];\n        // quick process ascii\n        if (c < 0x80) { utf16buf[out++] = c; continue; }\n\n        c_len = _utf8len[c];\n        // skip 5 & 6 byte codes\n        if (c_len > 4) { utf16buf[out++] = 0xfffd; i += c_len-1; continue; }\n\n        // apply mask on first byte\n        c &= c_len === 2 ? 0x1f : c_len === 3 ? 0x0f : 0x07;\n        // join the rest\n        while (c_len > 1 && i < len) {\n            c = (c << 6) | (buf[i++] & 0x3f);\n            c_len--;\n        }\n\n        // terminated by end of string?\n        if (c_len > 1) { utf16buf[out++] = 0xfffd; continue; }\n\n        if (c < 0x10000) {\n            utf16buf[out++] = c;\n        } else {\n            c -= 0x10000;\n            utf16buf[out++] = 0xd800 | ((c >> 10) & 0x3ff);\n            utf16buf[out++] = 0xdc00 | (c & 0x3ff);\n        }\n    }\n\n    // shrinkBuf(utf16buf, out)\n    if (utf16buf.length !== out) {\n        if(utf16buf.subarray) {\n            utf16buf = utf16buf.subarray(0, out);\n        } else {\n            utf16buf.length = out;\n        }\n    }\n\n    // return String.fromCharCode.apply(null, utf16buf);\n    return utils.applyFromCharCode(utf16buf);\n};\n\n\n// That's all for the pako functions.\n\n\n/**\n * Transform a javascript string into an array (typed if possible) of bytes,\n * UTF-8 encoded.\n * @param {String} str the string to encode\n * @return {Array|Uint8Array|Buffer} the UTF-8 encoded string.\n */\nexports.utf8encode = function utf8encode(str) {\n    if (support.nodebuffer) {\n        return nodejsUtils.newBufferFrom(str, \"utf-8\");\n    }\n\n    return string2buf(str);\n};\n\n\n/**\n * Transform a bytes array (or a representation) representing an UTF-8 encoded\n * string into a javascript string.\n * @param {Array|Uint8Array|Buffer} buf the data de decode\n * @return {String} the decoded string.\n */\nexports.utf8decode = function utf8decode(buf) {\n    if (support.nodebuffer) {\n        return utils.transformTo(\"nodebuffer\", buf).toString(\"utf-8\");\n    }\n\n    buf = utils.transformTo(support.uint8array ? \"uint8array\" : \"array\", buf);\n\n    return buf2string(buf);\n};\n\n/**\n * A worker to decode utf8 encoded binary chunks into string chunks.\n * @constructor\n */\nfunction Utf8DecodeWorker() {\n    GenericWorker.call(this, \"utf-8 decode\");\n    // the last bytes if a chunk didn't end with a complete codepoint.\n    this.leftOver = null;\n}\nutils.inherits(Utf8DecodeWorker, GenericWorker);\n\n/**\n * @see GenericWorker.processChunk\n */\nUtf8DecodeWorker.prototype.processChunk = function (chunk) {\n\n    var data = utils.transformTo(support.uint8array ? \"uint8array\" : \"array\", chunk.data);\n\n    // 1st step, re-use what's left of the previous chunk\n    if (this.leftOver && this.leftOver.length) {\n        if(support.uint8array) {\n            var previousData = data;\n            data = new Uint8Array(previousData.length + this.leftOver.length);\n            data.set(this.leftOver, 0);\n            data.set(previousData, this.leftOver.length);\n        } else {\n            data = this.leftOver.concat(data);\n        }\n        this.leftOver = null;\n    }\n\n    var nextBoundary = utf8border(data);\n    var usableData = data;\n    if (nextBoundary !== data.length) {\n        if (support.uint8array) {\n            usableData = data.subarray(0, nextBoundary);\n            this.leftOver = data.subarray(nextBoundary, data.length);\n        } else {\n            usableData = data.slice(0, nextBoundary);\n            this.leftOver = data.slice(nextBoundary, data.length);\n        }\n    }\n\n    this.push({\n        data : exports.utf8decode(usableData),\n        meta : chunk.meta\n    });\n};\n\n/**\n * @see GenericWorker.flush\n */\nUtf8DecodeWorker.prototype.flush = function () {\n    if(this.leftOver && this.leftOver.length) {\n        this.push({\n            data : exports.utf8decode(this.leftOver),\n            meta : {}\n        });\n        this.leftOver = null;\n    }\n};\nexports.Utf8DecodeWorker = Utf8DecodeWorker;\n\n/**\n * A worker to endcode string chunks into utf8 encoded binary chunks.\n * @constructor\n */\nfunction Utf8EncodeWorker() {\n    GenericWorker.call(this, \"utf-8 encode\");\n}\nutils.inherits(Utf8EncodeWorker, GenericWorker);\n\n/**\n * @see GenericWorker.processChunk\n */\nUtf8EncodeWorker.prototype.processChunk = function (chunk) {\n    this.push({\n        data : exports.utf8encode(chunk.data),\n        meta : chunk.meta\n    });\n};\nexports.Utf8EncodeWorker = Utf8EncodeWorker;\n\n},{\"./nodejsUtils\":14,\"./stream/GenericWorker\":28,\"./support\":30,\"./utils\":32}],32:[function(require,module,exports){\n\"use strict\";\n\nvar support = require(\"./support\");\nvar base64 = require(\"./base64\");\nvar nodejsUtils = require(\"./nodejsUtils\");\nvar external = require(\"./external\");\nrequire(\"setimmediate\");\n\n\n/**\n * Convert a string that pass as a \"binary string\": it should represent a byte\n * array but may have > 255 char codes. Be sure to take only the first byte\n * and returns the byte array.\n * @param {String} str the string to transform.\n * @return {Array|Uint8Array} the string in a binary format.\n */\nfunction string2binary(str) {\n    var result = null;\n    if (support.uint8array) {\n        result = new Uint8Array(str.length);\n    } else {\n        result = new Array(str.length);\n    }\n    return stringToArrayLike(str, result);\n}\n\n/**\n * Create a new blob with the given content and the given type.\n * @param {String|ArrayBuffer} part the content to put in the blob. DO NOT use\n * an Uint8Array because the stock browser of android 4 won't accept it (it\n * will be silently converted to a string, \"[object Uint8Array]\").\n *\n * Use only ONE part to build the blob to avoid a memory leak in IE11 / Edge:\n * when a large amount of Array is used to create the Blob, the amount of\n * memory consumed is nearly 100 times the original data amount.\n *\n * @param {String} type the mime type of the blob.\n * @return {Blob} the created blob.\n */\nexports.newBlob = function(part, type) {\n    exports.checkSupport(\"blob\");\n\n    try {\n        // Blob constructor\n        return new Blob([part], {\n            type: type\n        });\n    }\n    catch (e) {\n\n        try {\n            // deprecated, browser only, old way\n            var Builder = self.BlobBuilder || self.WebKitBlobBuilder || self.MozBlobBuilder || self.MSBlobBuilder;\n            var builder = new Builder();\n            builder.append(part);\n            return builder.getBlob(type);\n        }\n        catch (e) {\n\n            // well, fuck ?!\n            throw new Error(\"Bug : can't construct the Blob.\");\n        }\n    }\n\n\n};\n/**\n * The identity function.\n * @param {Object} input the input.\n * @return {Object} the same input.\n */\nfunction identity(input) {\n    return input;\n}\n\n/**\n * Fill in an array with a string.\n * @param {String} str the string to use.\n * @param {Array|ArrayBuffer|Uint8Array|Buffer} array the array to fill in (will be mutated).\n * @return {Array|ArrayBuffer|Uint8Array|Buffer} the updated array.\n */\nfunction stringToArrayLike(str, array) {\n    for (var i = 0; i < str.length; ++i) {\n        array[i] = str.charCodeAt(i) & 0xFF;\n    }\n    return array;\n}\n\n/**\n * An helper for the function arrayLikeToString.\n * This contains static information and functions that\n * can be optimized by the browser JIT compiler.\n */\nvar arrayToStringHelper = {\n    /**\n     * Transform an array of int into a string, chunk by chunk.\n     * See the performances notes on arrayLikeToString.\n     * @param {Array|ArrayBuffer|Uint8Array|Buffer} array the array to transform.\n     * @param {String} type the type of the array.\n     * @param {Integer} chunk the chunk size.\n     * @return {String} the resulting string.\n     * @throws Error if the chunk is too big for the stack.\n     */\n    stringifyByChunk: function(array, type, chunk) {\n        var result = [], k = 0, len = array.length;\n        // shortcut\n        if (len <= chunk) {\n            return String.fromCharCode.apply(null, array);\n        }\n        while (k < len) {\n            if (type === \"array\" || type === \"nodebuffer\") {\n                result.push(String.fromCharCode.apply(null, array.slice(k, Math.min(k + chunk, len))));\n            }\n            else {\n                result.push(String.fromCharCode.apply(null, array.subarray(k, Math.min(k + chunk, len))));\n            }\n            k += chunk;\n        }\n        return result.join(\"\");\n    },\n    /**\n     * Call String.fromCharCode on every item in the array.\n     * This is the naive implementation, which generate A LOT of intermediate string.\n     * This should be used when everything else fail.\n     * @param {Array|ArrayBuffer|Uint8Array|Buffer} array the array to transform.\n     * @return {String} the result.\n     */\n    stringifyByChar: function(array){\n        var resultStr = \"\";\n        for(var i = 0; i < array.length; i++) {\n            resultStr += String.fromCharCode(array[i]);\n        }\n        return resultStr;\n    },\n    applyCanBeUsed : {\n        /**\n         * true if the browser accepts to use String.fromCharCode on Uint8Array\n         */\n        uint8array : (function () {\n            try {\n                return support.uint8array && String.fromCharCode.apply(null, new Uint8Array(1)).length === 1;\n            } catch (e) {\n                return false;\n            }\n        })(),\n        /**\n         * true if the browser accepts to use String.fromCharCode on nodejs Buffer.\n         */\n        nodebuffer : (function () {\n            try {\n                return support.nodebuffer && String.fromCharCode.apply(null, nodejsUtils.allocBuffer(1)).length === 1;\n            } catch (e) {\n                return false;\n            }\n        })()\n    }\n};\n\n/**\n * Transform an array-like object to a string.\n * @param {Array|ArrayBuffer|Uint8Array|Buffer} array the array to transform.\n * @return {String} the result.\n */\nfunction arrayLikeToString(array) {\n    // Performances notes :\n    // --------------------\n    // String.fromCharCode.apply(null, array) is the fastest, see\n    // see http://jsperf.com/converting-a-uint8array-to-a-string/2\n    // but the stack is limited (and we can get huge arrays !).\n    //\n    // result += String.fromCharCode(array[i]); generate too many strings !\n    //\n    // This code is inspired by http://jsperf.com/arraybuffer-to-string-apply-performance/2\n    // TODO : we now have workers that split the work. Do we still need that ?\n    var chunk = 65536,\n        type = exports.getTypeOf(array),\n        canUseApply = true;\n    if (type === \"uint8array\") {\n        canUseApply = arrayToStringHelper.applyCanBeUsed.uint8array;\n    } else if (type === \"nodebuffer\") {\n        canUseApply = arrayToStringHelper.applyCanBeUsed.nodebuffer;\n    }\n\n    if (canUseApply) {\n        while (chunk > 1) {\n            try {\n                return arrayToStringHelper.stringifyByChunk(array, type, chunk);\n            } catch (e) {\n                chunk = Math.floor(chunk / 2);\n            }\n        }\n    }\n\n    // no apply or chunk error : slow and painful algorithm\n    // default browser on android 4.*\n    return arrayToStringHelper.stringifyByChar(array);\n}\n\nexports.applyFromCharCode = arrayLikeToString;\n\n\n/**\n * Copy the data from an array-like to an other array-like.\n * @param {Array|ArrayBuffer|Uint8Array|Buffer} arrayFrom the origin array.\n * @param {Array|ArrayBuffer|Uint8Array|Buffer} arrayTo the destination array which will be mutated.\n * @return {Array|ArrayBuffer|Uint8Array|Buffer} the updated destination array.\n */\nfunction arrayLikeToArrayLike(arrayFrom, arrayTo) {\n    for (var i = 0; i < arrayFrom.length; i++) {\n        arrayTo[i] = arrayFrom[i];\n    }\n    return arrayTo;\n}\n\n// a matrix containing functions to transform everything into everything.\nvar transform = {};\n\n// string to ?\ntransform[\"string\"] = {\n    \"string\": identity,\n    \"array\": function(input) {\n        return stringToArrayLike(input, new Array(input.length));\n    },\n    \"arraybuffer\": function(input) {\n        return transform[\"string\"][\"uint8array\"](input).buffer;\n    },\n    \"uint8array\": function(input) {\n        return stringToArrayLike(input, new Uint8Array(input.length));\n    },\n    \"nodebuffer\": function(input) {\n        return stringToArrayLike(input, nodejsUtils.allocBuffer(input.length));\n    }\n};\n\n// array to ?\ntransform[\"array\"] = {\n    \"string\": arrayLikeToString,\n    \"array\": identity,\n    \"arraybuffer\": function(input) {\n        return (new Uint8Array(input)).buffer;\n    },\n    \"uint8array\": function(input) {\n        return new Uint8Array(input);\n    },\n    \"nodebuffer\": function(input) {\n        return nodejsUtils.newBufferFrom(input);\n    }\n};\n\n// arraybuffer to ?\ntransform[\"arraybuffer\"] = {\n    \"string\": function(input) {\n        return arrayLikeToString(new Uint8Array(input));\n    },\n    \"array\": function(input) {\n        return arrayLikeToArrayLike(new Uint8Array(input), new Array(input.byteLength));\n    },\n    \"arraybuffer\": identity,\n    \"uint8array\": function(input) {\n        return new Uint8Array(input);\n    },\n    \"nodebuffer\": function(input) {\n        return nodejsUtils.newBufferFrom(new Uint8Array(input));\n    }\n};\n\n// uint8array to ?\ntransform[\"uint8array\"] = {\n    \"string\": arrayLikeToString,\n    \"array\": function(input) {\n        return arrayLikeToArrayLike(input, new Array(input.length));\n    },\n    \"arraybuffer\": function(input) {\n        return input.buffer;\n    },\n    \"uint8array\": identity,\n    \"nodebuffer\": function(input) {\n        return nodejsUtils.newBufferFrom(input);\n    }\n};\n\n// nodebuffer to ?\ntransform[\"nodebuffer\"] = {\n    \"string\": arrayLikeToString,\n    \"array\": function(input) {\n        return arrayLikeToArrayLike(input, new Array(input.length));\n    },\n    \"arraybuffer\": function(input) {\n        return transform[\"nodebuffer\"][\"uint8array\"](input).buffer;\n    },\n    \"uint8array\": function(input) {\n        return arrayLikeToArrayLike(input, new Uint8Array(input.length));\n    },\n    \"nodebuffer\": identity\n};\n\n/**\n * Transform an input into any type.\n * The supported output type are : string, array, uint8array, arraybuffer, nodebuffer.\n * If no output type is specified, the unmodified input will be returned.\n * @param {String} outputType the output type.\n * @param {String|Array|ArrayBuffer|Uint8Array|Buffer} input the input to convert.\n * @throws {Error} an Error if the browser doesn't support the requested output type.\n */\nexports.transformTo = function(outputType, input) {\n    if (!input) {\n        // undefined, null, etc\n        // an empty string won't harm.\n        input = \"\";\n    }\n    if (!outputType) {\n        return input;\n    }\n    exports.checkSupport(outputType);\n    var inputType = exports.getTypeOf(input);\n    var result = transform[inputType][outputType](input);\n    return result;\n};\n\n/**\n * Resolve all relative path components, \".\" and \"..\", in a path. If these relative components\n * traverse above the root then the resulting path will only contain the final path component.\n *\n * All empty components, e.g. \"//\", are removed.\n * @param {string} path A path with / or \\ separators\n * @returns {string} The path with all relative path components resolved.\n */\nexports.resolve = function(path) {\n    var parts = path.split(\"/\");\n    var result = [];\n    for (var index = 0; index < parts.length; index++) {\n        var part = parts[index];\n        // Allow the first and last component to be empty for trailing slashes.\n        if (part === \".\" || (part === \"\" && index !== 0 && index !== parts.length - 1)) {\n            continue;\n        } else if (part === \"..\") {\n            result.pop();\n        } else {\n            result.push(part);\n        }\n    }\n    return result.join(\"/\");\n};\n\n/**\n * Return the type of the input.\n * The type will be in a format valid for JSZip.utils.transformTo : string, array, uint8array, arraybuffer.\n * @param {Object} input the input to identify.\n * @return {String} the (lowercase) type of the input.\n */\nexports.getTypeOf = function(input) {\n    if (typeof input === \"string\") {\n        return \"string\";\n    }\n    if (Object.prototype.toString.call(input) === \"[object Array]\") {\n        return \"array\";\n    }\n    if (support.nodebuffer && nodejsUtils.isBuffer(input)) {\n        return \"nodebuffer\";\n    }\n    if (support.uint8array && input instanceof Uint8Array) {\n        return \"uint8array\";\n    }\n    if (support.arraybuffer && input instanceof ArrayBuffer) {\n        return \"arraybuffer\";\n    }\n};\n\n/**\n * Throw an exception if the type is not supported.\n * @param {String} type the type to check.\n * @throws {Error} an Error if the browser doesn't support the requested type.\n */\nexports.checkSupport = function(type) {\n    var supported = support[type.toLowerCase()];\n    if (!supported) {\n        throw new Error(type + \" is not supported by this platform\");\n    }\n};\n\nexports.MAX_VALUE_16BITS = 65535;\nexports.MAX_VALUE_32BITS = -1; // well, \"\\xFF\\xFF\\xFF\\xFF\\xFF\\xFF\\xFF\\xFF\" is parsed as -1\n\n/**\n * Prettify a string read as binary.\n * @param {string} str the string to prettify.\n * @return {string} a pretty string.\n */\nexports.pretty = function(str) {\n    var res = \"\",\n        code, i;\n    for (i = 0; i < (str || \"\").length; i++) {\n        code = str.charCodeAt(i);\n        res += \"\\\\x\" + (code < 16 ? \"0\" : \"\") + code.toString(16).toUpperCase();\n    }\n    return res;\n};\n\n/**\n * Defer the call of a function.\n * @param {Function} callback the function to call asynchronously.\n * @param {Array} args the arguments to give to the callback.\n */\nexports.delay = function(callback, args, self) {\n    setImmediate(function () {\n        callback.apply(self || null, args || []);\n    });\n};\n\n/**\n * Extends a prototype with an other, without calling a constructor with\n * side effects. Inspired by nodejs' `utils.inherits`\n * @param {Function} ctor the constructor to augment\n * @param {Function} superCtor the parent constructor to use\n */\nexports.inherits = function (ctor, superCtor) {\n    var Obj = function() {};\n    Obj.prototype = superCtor.prototype;\n    ctor.prototype = new Obj();\n};\n\n/**\n * Merge the objects passed as parameters into a new one.\n * @private\n * @param {...Object} var_args All objects to merge.\n * @return {Object} a new object with the data of the others.\n */\nexports.extend = function() {\n    var result = {}, i, attr;\n    for (i = 0; i < arguments.length; i++) { // arguments is not enumerable in some browsers\n        for (attr in arguments[i]) {\n            if (Object.prototype.hasOwnProperty.call(arguments[i], attr) && typeof result[attr] === \"undefined\") {\n                result[attr] = arguments[i][attr];\n            }\n        }\n    }\n    return result;\n};\n\n/**\n * Transform arbitrary content into a Promise.\n * @param {String} name a name for the content being processed.\n * @param {Object} inputData the content to process.\n * @param {Boolean} isBinary true if the content is not an unicode string\n * @param {Boolean} isOptimizedBinaryString true if the string content only has one byte per character.\n * @param {Boolean} isBase64 true if the string content is encoded with base64.\n * @return {Promise} a promise in a format usable by JSZip.\n */\nexports.prepareContent = function(name, inputData, isBinary, isOptimizedBinaryString, isBase64) {\n\n    // if inputData is already a promise, this flatten it.\n    var promise = external.Promise.resolve(inputData).then(function(data) {\n\n\n        var isBlob = support.blob && (data instanceof Blob || [\"[object File]\", \"[object Blob]\"].indexOf(Object.prototype.toString.call(data)) !== -1);\n\n        if (isBlob && typeof FileReader !== \"undefined\") {\n            return new external.Promise(function (resolve, reject) {\n                var reader = new FileReader();\n\n                reader.onload = function(e) {\n                    resolve(e.target.result);\n                };\n                reader.onerror = function(e) {\n                    reject(e.target.error);\n                };\n                reader.readAsArrayBuffer(data);\n            });\n        } else {\n            return data;\n        }\n    });\n\n    return promise.then(function(data) {\n        var dataType = exports.getTypeOf(data);\n\n        if (!dataType) {\n            return external.Promise.reject(\n                new Error(\"Can't read the data of '\" + name + \"'. Is it \" +\n                          \"in a supported JavaScript type (String, Blob, ArrayBuffer, etc) ?\")\n            );\n        }\n        // special case : it's way easier to work with Uint8Array than with ArrayBuffer\n        if (dataType === \"arraybuffer\") {\n            data = exports.transformTo(\"uint8array\", data);\n        } else if (dataType === \"string\") {\n            if (isBase64) {\n                data = base64.decode(data);\n            }\n            else if (isBinary) {\n                // optimizedBinaryString === true means that the file has already been filtered with a 0xFF mask\n                if (isOptimizedBinaryString !== true) {\n                    // this is a string, not in a base64 format.\n                    // Be sure that this is a correct \"binary string\"\n                    data = string2binary(data);\n                }\n            }\n        }\n        return data;\n    });\n};\n\n},{\"./base64\":1,\"./external\":6,\"./nodejsUtils\":14,\"./support\":30,\"setimmediate\":54}],33:[function(require,module,exports){\n\"use strict\";\nvar readerFor = require(\"./reader/readerFor\");\nvar utils = require(\"./utils\");\nvar sig = require(\"./signature\");\nvar ZipEntry = require(\"./zipEntry\");\nvar support = require(\"./support\");\n//  class ZipEntries {{{\n/**\n * All the entries in the zip file.\n * @constructor\n * @param {Object} loadOptions Options for loading the stream.\n */\nfunction ZipEntries(loadOptions) {\n    this.files = [];\n    this.loadOptions = loadOptions;\n}\nZipEntries.prototype = {\n    /**\n     * Check that the reader is on the specified signature.\n     * @param {string} expectedSignature the expected signature.\n     * @throws {Error} if it is an other signature.\n     */\n    checkSignature: function(expectedSignature) {\n        if (!this.reader.readAndCheckSignature(expectedSignature)) {\n            this.reader.index -= 4;\n            var signature = this.reader.readString(4);\n            throw new Error(\"Corrupted zip or bug: unexpected signature \" + \"(\" + utils.pretty(signature) + \", expected \" + utils.pretty(expectedSignature) + \")\");\n        }\n    },\n    /**\n     * Check if the given signature is at the given index.\n     * @param {number} askedIndex the index to check.\n     * @param {string} expectedSignature the signature to expect.\n     * @return {boolean} true if the signature is here, false otherwise.\n     */\n    isSignature: function(askedIndex, expectedSignature) {\n        var currentIndex = this.reader.index;\n        this.reader.setIndex(askedIndex);\n        var signature = this.reader.readString(4);\n        var result = signature === expectedSignature;\n        this.reader.setIndex(currentIndex);\n        return result;\n    },\n    /**\n     * Read the end of the central directory.\n     */\n    readBlockEndOfCentral: function() {\n        this.diskNumber = this.reader.readInt(2);\n        this.diskWithCentralDirStart = this.reader.readInt(2);\n        this.centralDirRecordsOnThisDisk = this.reader.readInt(2);\n        this.centralDirRecords = this.reader.readInt(2);\n        this.centralDirSize = this.reader.readInt(4);\n        this.centralDirOffset = this.reader.readInt(4);\n\n        this.zipCommentLength = this.reader.readInt(2);\n        // warning : the encoding depends of the system locale\n        // On a linux machine with LANG=en_US.utf8, this field is utf8 encoded.\n        // On a windows machine, this field is encoded with the localized windows code page.\n        var zipComment = this.reader.readData(this.zipCommentLength);\n        var decodeParamType = support.uint8array ? \"uint8array\" : \"array\";\n        // To get consistent behavior with the generation part, we will assume that\n        // this is utf8 encoded unless specified otherwise.\n        var decodeContent = utils.transformTo(decodeParamType, zipComment);\n        this.zipComment = this.loadOptions.decodeFileName(decodeContent);\n    },\n    /**\n     * Read the end of the Zip 64 central directory.\n     * Not merged with the method readEndOfCentral :\n     * The end of central can coexist with its Zip64 brother,\n     * I don't want to read the wrong number of bytes !\n     */\n    readBlockZip64EndOfCentral: function() {\n        this.zip64EndOfCentralSize = this.reader.readInt(8);\n        this.reader.skip(4);\n        // this.versionMadeBy = this.reader.readString(2);\n        // this.versionNeeded = this.reader.readInt(2);\n        this.diskNumber = this.reader.readInt(4);\n        this.diskWithCentralDirStart = this.reader.readInt(4);\n        this.centralDirRecordsOnThisDisk = this.reader.readInt(8);\n        this.centralDirRecords = this.reader.readInt(8);\n        this.centralDirSize = this.reader.readInt(8);\n        this.centralDirOffset = this.reader.readInt(8);\n\n        this.zip64ExtensibleData = {};\n        var extraDataSize = this.zip64EndOfCentralSize - 44,\n            index = 0,\n            extraFieldId,\n            extraFieldLength,\n            extraFieldValue;\n        while (index < extraDataSize) {\n            extraFieldId = this.reader.readInt(2);\n            extraFieldLength = this.reader.readInt(4);\n            extraFieldValue = this.reader.readData(extraFieldLength);\n            this.zip64ExtensibleData[extraFieldId] = {\n                id: extraFieldId,\n                length: extraFieldLength,\n                value: extraFieldValue\n            };\n        }\n    },\n    /**\n     * Read the end of the Zip 64 central directory locator.\n     */\n    readBlockZip64EndOfCentralLocator: function() {\n        this.diskWithZip64CentralDirStart = this.reader.readInt(4);\n        this.relativeOffsetEndOfZip64CentralDir = this.reader.readInt(8);\n        this.disksCount = this.reader.readInt(4);\n        if (this.disksCount > 1) {\n            throw new Error(\"Multi-volumes zip are not supported\");\n        }\n    },\n    /**\n     * Read the local files, based on the offset read in the central part.\n     */\n    readLocalFiles: function() {\n        var i, file;\n        for (i = 0; i < this.files.length; i++) {\n            file = this.files[i];\n            this.reader.setIndex(file.localHeaderOffset);\n            this.checkSignature(sig.LOCAL_FILE_HEADER);\n            file.readLocalPart(this.reader);\n            file.handleUTF8();\n            file.processAttributes();\n        }\n    },\n    /**\n     * Read the central directory.\n     */\n    readCentralDir: function() {\n        var file;\n\n        this.reader.setIndex(this.centralDirOffset);\n        while (this.reader.readAndCheckSignature(sig.CENTRAL_FILE_HEADER)) {\n            file = new ZipEntry({\n                zip64: this.zip64\n            }, this.loadOptions);\n            file.readCentralPart(this.reader);\n            this.files.push(file);\n        }\n\n        if (this.centralDirRecords !== this.files.length) {\n            if (this.centralDirRecords !== 0 && this.files.length === 0) {\n                // We expected some records but couldn't find ANY.\n                // This is really suspicious, as if something went wrong.\n                throw new Error(\"Corrupted zip or bug: expected \" + this.centralDirRecords + \" records in central dir, got \" + this.files.length);\n            } else {\n                // We found some records but not all.\n                // Something is wrong but we got something for the user: no error here.\n                // console.warn(\"expected\", this.centralDirRecords, \"records in central dir, got\", this.files.length);\n            }\n        }\n    },\n    /**\n     * Read the end of central directory.\n     */\n    readEndOfCentral: function() {\n        var offset = this.reader.lastIndexOfSignature(sig.CENTRAL_DIRECTORY_END);\n        if (offset < 0) {\n            // Check if the content is a truncated zip or complete garbage.\n            // A \"LOCAL_FILE_HEADER\" is not required at the beginning (auto\n            // extractible zip for example) but it can give a good hint.\n            // If an ajax request was used without responseType, we will also\n            // get unreadable data.\n            var isGarbage = !this.isSignature(0, sig.LOCAL_FILE_HEADER);\n\n            if (isGarbage) {\n                throw new Error(\"Can't find end of central directory : is this a zip file ? \" +\n                                \"If it is, see https://stuk.github.io/jszip/documentation/howto/read_zip.html\");\n            } else {\n                throw new Error(\"Corrupted zip: can't find end of central directory\");\n            }\n\n        }\n        this.reader.setIndex(offset);\n        var endOfCentralDirOffset = offset;\n        this.checkSignature(sig.CENTRAL_DIRECTORY_END);\n        this.readBlockEndOfCentral();\n\n\n        /* extract from the zip spec :\n            4)  If one of the fields in the end of central directory\n                record is too small to hold required data, the field\n                should be set to -1 (0xFFFF or 0xFFFFFFFF) and the\n                ZIP64 format record should be created.\n            5)  The end of central directory record and the\n                Zip64 end of central directory locator record must\n                reside on the same disk when splitting or spanning\n                an archive.\n         */\n        if (this.diskNumber === utils.MAX_VALUE_16BITS || this.diskWithCentralDirStart === utils.MAX_VALUE_16BITS || this.centralDirRecordsOnThisDisk === utils.MAX_VALUE_16BITS || this.centralDirRecords === utils.MAX_VALUE_16BITS || this.centralDirSize === utils.MAX_VALUE_32BITS || this.centralDirOffset === utils.MAX_VALUE_32BITS) {\n            this.zip64 = true;\n\n            /*\n            Warning : the zip64 extension is supported, but ONLY if the 64bits integer read from\n            the zip file can fit into a 32bits integer. This cannot be solved : JavaScript represents\n            all numbers as 64-bit double precision IEEE 754 floating point numbers.\n            So, we have 53bits for integers and bitwise operations treat everything as 32bits.\n            see https://developer.mozilla.org/en-US/docs/JavaScript/Reference/Operators/Bitwise_Operators\n            and http://www.ecma-international.org/publications/files/ECMA-ST/ECMA-262.pdf section 8.5\n            */\n\n            // should look for a zip64 EOCD locator\n            offset = this.reader.lastIndexOfSignature(sig.ZIP64_CENTRAL_DIRECTORY_LOCATOR);\n            if (offset < 0) {\n                throw new Error(\"Corrupted zip: can't find the ZIP64 end of central directory locator\");\n            }\n            this.reader.setIndex(offset);\n            this.checkSignature(sig.ZIP64_CENTRAL_DIRECTORY_LOCATOR);\n            this.readBlockZip64EndOfCentralLocator();\n\n            // now the zip64 EOCD record\n            if (!this.isSignature(this.relativeOffsetEndOfZip64CentralDir, sig.ZIP64_CENTRAL_DIRECTORY_END)) {\n                // console.warn(\"ZIP64 end of central directory not where expected.\");\n                this.relativeOffsetEndOfZip64CentralDir = this.reader.lastIndexOfSignature(sig.ZIP64_CENTRAL_DIRECTORY_END);\n                if (this.relativeOffsetEndOfZip64CentralDir < 0) {\n                    throw new Error(\"Corrupted zip: can't find the ZIP64 end of central directory\");\n                }\n            }\n            this.reader.setIndex(this.relativeOffsetEndOfZip64CentralDir);\n            this.checkSignature(sig.ZIP64_CENTRAL_DIRECTORY_END);\n            this.readBlockZip64EndOfCentral();\n        }\n\n        var expectedEndOfCentralDirOffset = this.centralDirOffset + this.centralDirSize;\n        if (this.zip64) {\n            expectedEndOfCentralDirOffset += 20; // end of central dir 64 locator\n            expectedEndOfCentralDirOffset += 12 /* should not include the leading 12 bytes */ + this.zip64EndOfCentralSize;\n        }\n\n        var extraBytes = endOfCentralDirOffset - expectedEndOfCentralDirOffset;\n\n        if (extraBytes > 0) {\n            // console.warn(extraBytes, \"extra bytes at beginning or within zipfile\");\n            if (this.isSignature(endOfCentralDirOffset, sig.CENTRAL_FILE_HEADER)) {\n                // The offsets seem wrong, but we have something at the specified offset.\n                // So… we keep it.\n            } else {\n                // the offset is wrong, update the \"zero\" of the reader\n                // this happens if data has been prepended (crx files for example)\n                this.reader.zero = extraBytes;\n            }\n        } else if (extraBytes < 0) {\n            throw new Error(\"Corrupted zip: missing \" + Math.abs(extraBytes) + \" bytes.\");\n        }\n    },\n    prepareReader: function(data) {\n        this.reader = readerFor(data);\n    },\n    /**\n     * Read a zip file and create ZipEntries.\n     * @param {String|ArrayBuffer|Uint8Array|Buffer} data the binary string representing a zip file.\n     */\n    load: function(data) {\n        this.prepareReader(data);\n        this.readEndOfCentral();\n        this.readCentralDir();\n        this.readLocalFiles();\n    }\n};\n// }}} end of ZipEntries\nmodule.exports = ZipEntries;\n\n},{\"./reader/readerFor\":22,\"./signature\":23,\"./support\":30,\"./utils\":32,\"./zipEntry\":34}],34:[function(require,module,exports){\n\"use strict\";\nvar readerFor = require(\"./reader/readerFor\");\nvar utils = require(\"./utils\");\nvar CompressedObject = require(\"./compressedObject\");\nvar crc32fn = require(\"./crc32\");\nvar utf8 = require(\"./utf8\");\nvar compressions = require(\"./compressions\");\nvar support = require(\"./support\");\n\nvar MADE_BY_DOS = 0x00;\nvar MADE_BY_UNIX = 0x03;\n\n/**\n * Find a compression registered in JSZip.\n * @param {string} compressionMethod the method magic to find.\n * @return {Object|null} the JSZip compression object, null if none found.\n */\nvar findCompression = function(compressionMethod) {\n    for (var method in compressions) {\n        if (!Object.prototype.hasOwnProperty.call(compressions, method)) {\n            continue;\n        }\n        if (compressions[method].magic === compressionMethod) {\n            return compressions[method];\n        }\n    }\n    return null;\n};\n\n// class ZipEntry {{{\n/**\n * An entry in the zip file.\n * @constructor\n * @param {Object} options Options of the current file.\n * @param {Object} loadOptions Options for loading the stream.\n */\nfunction ZipEntry(options, loadOptions) {\n    this.options = options;\n    this.loadOptions = loadOptions;\n}\nZipEntry.prototype = {\n    /**\n     * say if the file is encrypted.\n     * @return {boolean} true if the file is encrypted, false otherwise.\n     */\n    isEncrypted: function() {\n        // bit 1 is set\n        return (this.bitFlag & 0x0001) === 0x0001;\n    },\n    /**\n     * say if the file has utf-8 filename/comment.\n     * @return {boolean} true if the filename/comment is in utf-8, false otherwise.\n     */\n    useUTF8: function() {\n        // bit 11 is set\n        return (this.bitFlag & 0x0800) === 0x0800;\n    },\n    /**\n     * Read the local part of a zip file and add the info in this object.\n     * @param {DataReader} reader the reader to use.\n     */\n    readLocalPart: function(reader) {\n        var compression, localExtraFieldsLength;\n\n        // we already know everything from the central dir !\n        // If the central dir data are false, we are doomed.\n        // On the bright side, the local part is scary  : zip64, data descriptors, both, etc.\n        // The less data we get here, the more reliable this should be.\n        // Let's skip the whole header and dash to the data !\n        reader.skip(22);\n        // in some zip created on windows, the filename stored in the central dir contains \\ instead of /.\n        // Strangely, the filename here is OK.\n        // I would love to treat these zip files as corrupted (see http://www.info-zip.org/FAQ.html#backslashes\n        // or APPNOTE#4.4.17.1, \"All slashes MUST be forward slashes '/'\") but there are a lot of bad zip generators...\n        // Search \"unzip mismatching \"local\" filename continuing with \"central\" filename version\" on\n        // the internet.\n        //\n        // I think I see the logic here : the central directory is used to display\n        // content and the local directory is used to extract the files. Mixing / and \\\n        // may be used to display \\ to windows users and use / when extracting the files.\n        // Unfortunately, this lead also to some issues : http://seclists.org/fulldisclosure/2009/Sep/394\n        this.fileNameLength = reader.readInt(2);\n        localExtraFieldsLength = reader.readInt(2); // can't be sure this will be the same as the central dir\n        // the fileName is stored as binary data, the handleUTF8 method will take care of the encoding.\n        this.fileName = reader.readData(this.fileNameLength);\n        reader.skip(localExtraFieldsLength);\n\n        if (this.compressedSize === -1 || this.uncompressedSize === -1) {\n            throw new Error(\"Bug or corrupted zip : didn't get enough information from the central directory \" + \"(compressedSize === -1 || uncompressedSize === -1)\");\n        }\n\n        compression = findCompression(this.compressionMethod);\n        if (compression === null) { // no compression found\n            throw new Error(\"Corrupted zip : compression \" + utils.pretty(this.compressionMethod) + \" unknown (inner file : \" + utils.transformTo(\"string\", this.fileName) + \")\");\n        }\n        this.decompressed = new CompressedObject(this.compressedSize, this.uncompressedSize, this.crc32, compression, reader.readData(this.compressedSize));\n    },\n\n    /**\n     * Read the central part of a zip file and add the info in this object.\n     * @param {DataReader} reader the reader to use.\n     */\n    readCentralPart: function(reader) {\n        this.versionMadeBy = reader.readInt(2);\n        reader.skip(2);\n        // this.versionNeeded = reader.readInt(2);\n        this.bitFlag = reader.readInt(2);\n        this.compressionMethod = reader.readString(2);\n        this.date = reader.readDate();\n        this.crc32 = reader.readInt(4);\n        this.compressedSize = reader.readInt(4);\n        this.uncompressedSize = reader.readInt(4);\n        var fileNameLength = reader.readInt(2);\n        this.extraFieldsLength = reader.readInt(2);\n        this.fileCommentLength = reader.readInt(2);\n        this.diskNumberStart = reader.readInt(2);\n        this.internalFileAttributes = reader.readInt(2);\n        this.externalFileAttributes = reader.readInt(4);\n        this.localHeaderOffset = reader.readInt(4);\n\n        if (this.isEncrypted()) {\n            throw new Error(\"Encrypted zip are not supported\");\n        }\n\n        // will be read in the local part, see the comments there\n        reader.skip(fileNameLength);\n        this.readExtraFields(reader);\n        this.parseZIP64ExtraField(reader);\n        this.fileComment = reader.readData(this.fileCommentLength);\n    },\n\n    /**\n     * Parse the external file attributes and get the unix/dos permissions.\n     */\n    processAttributes: function () {\n        this.unixPermissions = null;\n        this.dosPermissions = null;\n        var madeBy = this.versionMadeBy >> 8;\n\n        // Check if we have the DOS directory flag set.\n        // We look for it in the DOS and UNIX permissions\n        // but some unknown platform could set it as a compatibility flag.\n        this.dir = this.externalFileAttributes & 0x0010 ? true : false;\n\n        if(madeBy === MADE_BY_DOS) {\n            // first 6 bits (0 to 5)\n            this.dosPermissions = this.externalFileAttributes & 0x3F;\n        }\n\n        if(madeBy === MADE_BY_UNIX) {\n            this.unixPermissions = (this.externalFileAttributes >> 16) & 0xFFFF;\n            // the octal permissions are in (this.unixPermissions & 0x01FF).toString(8);\n        }\n\n        // fail safe : if the name ends with a / it probably means a folder\n        if (!this.dir && this.fileNameStr.slice(-1) === \"/\") {\n            this.dir = true;\n        }\n    },\n\n    /**\n     * Parse the ZIP64 extra field and merge the info in the current ZipEntry.\n     * @param {DataReader} reader the reader to use.\n     */\n    parseZIP64ExtraField: function() {\n        if (!this.extraFields[0x0001]) {\n            return;\n        }\n\n        // should be something, preparing the extra reader\n        var extraReader = readerFor(this.extraFields[0x0001].value);\n\n        // I really hope that these 64bits integer can fit in 32 bits integer, because js\n        // won't let us have more.\n        if (this.uncompressedSize === utils.MAX_VALUE_32BITS) {\n            this.uncompressedSize = extraReader.readInt(8);\n        }\n        if (this.compressedSize === utils.MAX_VALUE_32BITS) {\n            this.compressedSize = extraReader.readInt(8);\n        }\n        if (this.localHeaderOffset === utils.MAX_VALUE_32BITS) {\n            this.localHeaderOffset = extraReader.readInt(8);\n        }\n        if (this.diskNumberStart === utils.MAX_VALUE_32BITS) {\n            this.diskNumberStart = extraReader.readInt(4);\n        }\n    },\n    /**\n     * Read the central part of a zip file and add the info in this object.\n     * @param {DataReader} reader the reader to use.\n     */\n    readExtraFields: function(reader) {\n        var end = reader.index + this.extraFieldsLength,\n            extraFieldId,\n            extraFieldLength,\n            extraFieldValue;\n\n        if (!this.extraFields) {\n            this.extraFields = {};\n        }\n\n        while (reader.index + 4 < end) {\n            extraFieldId = reader.readInt(2);\n            extraFieldLength = reader.readInt(2);\n            extraFieldValue = reader.readData(extraFieldLength);\n\n            this.extraFields[extraFieldId] = {\n                id: extraFieldId,\n                length: extraFieldLength,\n                value: extraFieldValue\n            };\n        }\n\n        reader.setIndex(end);\n    },\n    /**\n     * Apply an UTF8 transformation if needed.\n     */\n    handleUTF8: function() {\n        var decodeParamType = support.uint8array ? \"uint8array\" : \"array\";\n        if (this.useUTF8()) {\n            this.fileNameStr = utf8.utf8decode(this.fileName);\n            this.fileCommentStr = utf8.utf8decode(this.fileComment);\n        } else {\n            var upath = this.findExtraFieldUnicodePath();\n            if (upath !== null) {\n                this.fileNameStr = upath;\n            } else {\n                // ASCII text or unsupported code page\n                var fileNameByteArray =  utils.transformTo(decodeParamType, this.fileName);\n                this.fileNameStr = this.loadOptions.decodeFileName(fileNameByteArray);\n            }\n\n            var ucomment = this.findExtraFieldUnicodeComment();\n            if (ucomment !== null) {\n                this.fileCommentStr = ucomment;\n            } else {\n                // ASCII text or unsupported code page\n                var commentByteArray =  utils.transformTo(decodeParamType, this.fileComment);\n                this.fileCommentStr = this.loadOptions.decodeFileName(commentByteArray);\n            }\n        }\n    },\n\n    /**\n     * Find the unicode path declared in the extra field, if any.\n     * @return {String} the unicode path, null otherwise.\n     */\n    findExtraFieldUnicodePath: function() {\n        var upathField = this.extraFields[0x7075];\n        if (upathField) {\n            var extraReader = readerFor(upathField.value);\n\n            // wrong version\n            if (extraReader.readInt(1) !== 1) {\n                return null;\n            }\n\n            // the crc of the filename changed, this field is out of date.\n            if (crc32fn(this.fileName) !== extraReader.readInt(4)) {\n                return null;\n            }\n\n            return utf8.utf8decode(extraReader.readData(upathField.length - 5));\n        }\n        return null;\n    },\n\n    /**\n     * Find the unicode comment declared in the extra field, if any.\n     * @return {String} the unicode comment, null otherwise.\n     */\n    findExtraFieldUnicodeComment: function() {\n        var ucommentField = this.extraFields[0x6375];\n        if (ucommentField) {\n            var extraReader = readerFor(ucommentField.value);\n\n            // wrong version\n            if (extraReader.readInt(1) !== 1) {\n                return null;\n            }\n\n            // the crc of the comment changed, this field is out of date.\n            if (crc32fn(this.fileComment) !== extraReader.readInt(4)) {\n                return null;\n            }\n\n            return utf8.utf8decode(extraReader.readData(ucommentField.length - 5));\n        }\n        return null;\n    }\n};\nmodule.exports = ZipEntry;\n\n},{\"./compressedObject\":2,\"./compressions\":3,\"./crc32\":4,\"./reader/readerFor\":22,\"./support\":30,\"./utf8\":31,\"./utils\":32}],35:[function(require,module,exports){\n\"use strict\";\n\nvar StreamHelper = require(\"./stream/StreamHelper\");\nvar DataWorker = require(\"./stream/DataWorker\");\nvar utf8 = require(\"./utf8\");\nvar CompressedObject = require(\"./compressedObject\");\nvar GenericWorker = require(\"./stream/GenericWorker\");\n\n/**\n * A simple object representing a file in the zip file.\n * @constructor\n * @param {string} name the name of the file\n * @param {String|ArrayBuffer|Uint8Array|Buffer} data the data\n * @param {Object} options the options of the file\n */\nvar ZipObject = function(name, data, options) {\n    this.name = name;\n    this.dir = options.dir;\n    this.date = options.date;\n    this.comment = options.comment;\n    this.unixPermissions = options.unixPermissions;\n    this.dosPermissions = options.dosPermissions;\n\n    this._data = data;\n    this._dataBinary = options.binary;\n    // keep only the compression\n    this.options = {\n        compression : options.compression,\n        compressionOptions : options.compressionOptions\n    };\n};\n\nZipObject.prototype = {\n    /**\n     * Create an internal stream for the content of this object.\n     * @param {String} type the type of each chunk.\n     * @return StreamHelper the stream.\n     */\n    internalStream: function (type) {\n        var result = null, outputType = \"string\";\n        try {\n            if (!type) {\n                throw new Error(\"No output type specified.\");\n            }\n            outputType = type.toLowerCase();\n            var askUnicodeString = outputType === \"string\" || outputType === \"text\";\n            if (outputType === \"binarystring\" || outputType === \"text\") {\n                outputType = \"string\";\n            }\n            result = this._decompressWorker();\n\n            var isUnicodeString = !this._dataBinary;\n\n            if (isUnicodeString && !askUnicodeString) {\n                result = result.pipe(new utf8.Utf8EncodeWorker());\n            }\n            if (!isUnicodeString && askUnicodeString) {\n                result = result.pipe(new utf8.Utf8DecodeWorker());\n            }\n        } catch (e) {\n            result = new GenericWorker(\"error\");\n            result.error(e);\n        }\n\n        return new StreamHelper(result, outputType, \"\");\n    },\n\n    /**\n     * Prepare the content in the asked type.\n     * @param {String} type the type of the result.\n     * @param {Function} onUpdate a function to call on each internal update.\n     * @return Promise the promise of the result.\n     */\n    async: function (type, onUpdate) {\n        return this.internalStream(type).accumulate(onUpdate);\n    },\n\n    /**\n     * Prepare the content as a nodejs stream.\n     * @param {String} type the type of each chunk.\n     * @param {Function} onUpdate a function to call on each internal update.\n     * @return Stream the stream.\n     */\n    nodeStream: function (type, onUpdate) {\n        return this.internalStream(type || \"nodebuffer\").toNodejsStream(onUpdate);\n    },\n\n    /**\n     * Return a worker for the compressed content.\n     * @private\n     * @param {Object} compression the compression object to use.\n     * @param {Object} compressionOptions the options to use when compressing.\n     * @return Worker the worker.\n     */\n    _compressWorker: function (compression, compressionOptions) {\n        if (\n            this._data instanceof CompressedObject &&\n            this._data.compression.magic === compression.magic\n        ) {\n            return this._data.getCompressedWorker();\n        } else {\n            var result = this._decompressWorker();\n            if(!this._dataBinary) {\n                result = result.pipe(new utf8.Utf8EncodeWorker());\n            }\n            return CompressedObject.createWorkerFrom(result, compression, compressionOptions);\n        }\n    },\n    /**\n     * Return a worker for the decompressed content.\n     * @private\n     * @return Worker the worker.\n     */\n    _decompressWorker : function () {\n        if (this._data instanceof CompressedObject) {\n            return this._data.getContentWorker();\n        } else if (this._data instanceof GenericWorker) {\n            return this._data;\n        } else {\n            return new DataWorker(this._data);\n        }\n    }\n};\n\nvar removedMethods = [\"asText\", \"asBinary\", \"asNodeBuffer\", \"asUint8Array\", \"asArrayBuffer\"];\nvar removedFn = function () {\n    throw new Error(\"This method has been removed in JSZip 3.0, please check the upgrade guide.\");\n};\n\nfor(var i = 0; i < removedMethods.length; i++) {\n    ZipObject.prototype[removedMethods[i]] = removedFn;\n}\nmodule.exports = ZipObject;\n\n},{\"./compressedObject\":2,\"./stream/DataWorker\":27,\"./stream/GenericWorker\":28,\"./stream/StreamHelper\":29,\"./utf8\":31}],36:[function(require,module,exports){\n(function (global){\n'use strict';\nvar Mutation = global.MutationObserver || global.WebKitMutationObserver;\n\nvar scheduleDrain;\n\n{\n  if (Mutation) {\n    var called = 0;\n    var observer = new Mutation(nextTick);\n    var element = global.document.createTextNode('');\n    observer.observe(element, {\n      characterData: true\n    });\n    scheduleDrain = function () {\n      element.data = (called = ++called % 2);\n    };\n  } else if (!global.setImmediate && typeof global.MessageChannel !== 'undefined') {\n    var channel = new global.MessageChannel();\n    channel.port1.onmessage = nextTick;\n    scheduleDrain = function () {\n      channel.port2.postMessage(0);\n    };\n  } else if ('document' in global && 'onreadystatechange' in global.document.createElement('script')) {\n    scheduleDrain = function () {\n\n      // Create a <script> element; its readystatechange event will be fired asynchronously once it is inserted\n      // into the document. Do so, thus queuing up the task. Remember to clean up once it's been called.\n      var scriptEl = global.document.createElement('script');\n      scriptEl.onreadystatechange = function () {\n        nextTick();\n\n        scriptEl.onreadystatechange = null;\n        scriptEl.parentNode.removeChild(scriptEl);\n        scriptEl = null;\n      };\n      global.document.documentElement.appendChild(scriptEl);\n    };\n  } else {\n    scheduleDrain = function () {\n      setTimeout(nextTick, 0);\n    };\n  }\n}\n\nvar draining;\nvar queue = [];\n//named nextTick for less confusing stack traces\nfunction nextTick() {\n  draining = true;\n  var i, oldQueue;\n  var len = queue.length;\n  while (len) {\n    oldQueue = queue;\n    queue = [];\n    i = -1;\n    while (++i < len) {\n      oldQueue[i]();\n    }\n    len = queue.length;\n  }\n  draining = false;\n}\n\nmodule.exports = immediate;\nfunction immediate(task) {\n  if (queue.push(task) === 1 && !draining) {\n    scheduleDrain();\n  }\n}\n\n}).call(this,typeof global !== \"undefined\" ? global : typeof self !== \"undefined\" ? self : typeof window !== \"undefined\" ? window : {})\n},{}],37:[function(require,module,exports){\n'use strict';\nvar immediate = require('immediate');\n\n/* istanbul ignore next */\nfunction INTERNAL() {}\n\nvar handlers = {};\n\nvar REJECTED = ['REJECTED'];\nvar FULFILLED = ['FULFILLED'];\nvar PENDING = ['PENDING'];\n\nmodule.exports = Promise;\n\nfunction Promise(resolver) {\n  if (typeof resolver !== 'function') {\n    throw new TypeError('resolver must be a function');\n  }\n  this.state = PENDING;\n  this.queue = [];\n  this.outcome = void 0;\n  if (resolver !== INTERNAL) {\n    safelyResolveThenable(this, resolver);\n  }\n}\n\nPromise.prototype[\"finally\"] = function (callback) {\n  if (typeof callback !== 'function') {\n    return this;\n  }\n  var p = this.constructor;\n  return this.then(resolve, reject);\n\n  function resolve(value) {\n    function yes () {\n      return value;\n    }\n    return p.resolve(callback()).then(yes);\n  }\n  function reject(reason) {\n    function no () {\n      throw reason;\n    }\n    return p.resolve(callback()).then(no);\n  }\n};\nPromise.prototype[\"catch\"] = function (onRejected) {\n  return this.then(null, onRejected);\n};\nPromise.prototype.then = function (onFulfilled, onRejected) {\n  if (typeof onFulfilled !== 'function' && this.state === FULFILLED ||\n    typeof onRejected !== 'function' && this.state === REJECTED) {\n    return this;\n  }\n  var promise = new this.constructor(INTERNAL);\n  if (this.state !== PENDING) {\n    var resolver = this.state === FULFILLED ? onFulfilled : onRejected;\n    unwrap(promise, resolver, this.outcome);\n  } else {\n    this.queue.push(new QueueItem(promise, onFulfilled, onRejected));\n  }\n\n  return promise;\n};\nfunction QueueItem(promise, onFulfilled, onRejected) {\n  this.promise = promise;\n  if (typeof onFulfilled === 'function') {\n    this.onFulfilled = onFulfilled;\n    this.callFulfilled = this.otherCallFulfilled;\n  }\n  if (typeof onRejected === 'function') {\n    this.onRejected = onRejected;\n    this.callRejected = this.otherCallRejected;\n  }\n}\nQueueItem.prototype.callFulfilled = function (value) {\n  handlers.resolve(this.promise, value);\n};\nQueueItem.prototype.otherCallFulfilled = function (value) {\n  unwrap(this.promise, this.onFulfilled, value);\n};\nQueueItem.prototype.callRejected = function (value) {\n  handlers.reject(this.promise, value);\n};\nQueueItem.prototype.otherCallRejected = function (value) {\n  unwrap(this.promise, this.onRejected, value);\n};\n\nfunction unwrap(promise, func, value) {\n  immediate(function () {\n    var returnValue;\n    try {\n      returnValue = func(value);\n    } catch (e) {\n      return handlers.reject(promise, e);\n    }\n    if (returnValue === promise) {\n      handlers.reject(promise, new TypeError('Cannot resolve promise with itself'));\n    } else {\n      handlers.resolve(promise, returnValue);\n    }\n  });\n}\n\nhandlers.resolve = function (self, value) {\n  var result = tryCatch(getThen, value);\n  if (result.status === 'error') {\n    return handlers.reject(self, result.value);\n  }\n  var thenable = result.value;\n\n  if (thenable) {\n    safelyResolveThenable(self, thenable);\n  } else {\n    self.state = FULFILLED;\n    self.outcome = value;\n    var i = -1;\n    var len = self.queue.length;\n    while (++i < len) {\n      self.queue[i].callFulfilled(value);\n    }\n  }\n  return self;\n};\nhandlers.reject = function (self, error) {\n  self.state = REJECTED;\n  self.outcome = error;\n  var i = -1;\n  var len = self.queue.length;\n  while (++i < len) {\n    self.queue[i].callRejected(error);\n  }\n  return self;\n};\n\nfunction getThen(obj) {\n  // Make sure we only access the accessor once as required by the spec\n  var then = obj && obj.then;\n  if (obj && (typeof obj === 'object' || typeof obj === 'function') && typeof then === 'function') {\n    return function appyThen() {\n      then.apply(obj, arguments);\n    };\n  }\n}\n\nfunction safelyResolveThenable(self, thenable) {\n  // Either fulfill, reject or reject with error\n  var called = false;\n  function onError(value) {\n    if (called) {\n      return;\n    }\n    called = true;\n    handlers.reject(self, value);\n  }\n\n  function onSuccess(value) {\n    if (called) {\n      return;\n    }\n    called = true;\n    handlers.resolve(self, value);\n  }\n\n  function tryToUnwrap() {\n    thenable(onSuccess, onError);\n  }\n\n  var result = tryCatch(tryToUnwrap);\n  if (result.status === 'error') {\n    onError(result.value);\n  }\n}\n\nfunction tryCatch(func, value) {\n  var out = {};\n  try {\n    out.value = func(value);\n    out.status = 'success';\n  } catch (e) {\n    out.status = 'error';\n    out.value = e;\n  }\n  return out;\n}\n\nPromise.resolve = resolve;\nfunction resolve(value) {\n  if (value instanceof this) {\n    return value;\n  }\n  return handlers.resolve(new this(INTERNAL), value);\n}\n\nPromise.reject = reject;\nfunction reject(reason) {\n  var promise = new this(INTERNAL);\n  return handlers.reject(promise, reason);\n}\n\nPromise.all = all;\nfunction all(iterable) {\n  var self = this;\n  if (Object.prototype.toString.call(iterable) !== '[object Array]') {\n    return this.reject(new TypeError('must be an array'));\n  }\n\n  var len = iterable.length;\n  var called = false;\n  if (!len) {\n    return this.resolve([]);\n  }\n\n  var values = new Array(len);\n  var resolved = 0;\n  var i = -1;\n  var promise = new this(INTERNAL);\n\n  while (++i < len) {\n    allResolver(iterable[i], i);\n  }\n  return promise;\n  function allResolver(value, i) {\n    self.resolve(value).then(resolveFromAll, function (error) {\n      if (!called) {\n        called = true;\n        handlers.reject(promise, error);\n      }\n    });\n    function resolveFromAll(outValue) {\n      values[i] = outValue;\n      if (++resolved === len && !called) {\n        called = true;\n        handlers.resolve(promise, values);\n      }\n    }\n  }\n}\n\nPromise.race = race;\nfunction race(iterable) {\n  var self = this;\n  if (Object.prototype.toString.call(iterable) !== '[object Array]') {\n    return this.reject(new TypeError('must be an array'));\n  }\n\n  var len = iterable.length;\n  var called = false;\n  if (!len) {\n    return this.resolve([]);\n  }\n\n  var i = -1;\n  var promise = new this(INTERNAL);\n\n  while (++i < len) {\n    resolver(iterable[i]);\n  }\n  return promise;\n  function resolver(value) {\n    self.resolve(value).then(function (response) {\n      if (!called) {\n        called = true;\n        handlers.resolve(promise, response);\n      }\n    }, function (error) {\n      if (!called) {\n        called = true;\n        handlers.reject(promise, error);\n      }\n    });\n  }\n}\n\n},{\"immediate\":36}],38:[function(require,module,exports){\n// Top level file is just a mixin of submodules & constants\n'use strict';\n\nvar assign    = require('./lib/utils/common').assign;\n\nvar deflate   = require('./lib/deflate');\nvar inflate   = require('./lib/inflate');\nvar constants = require('./lib/zlib/constants');\n\nvar pako = {};\n\nassign(pako, deflate, inflate, constants);\n\nmodule.exports = pako;\n\n},{\"./lib/deflate\":39,\"./lib/inflate\":40,\"./lib/utils/common\":41,\"./lib/zlib/constants\":44}],39:[function(require,module,exports){\n'use strict';\n\n\nvar zlib_deflate = require('./zlib/deflate');\nvar utils        = require('./utils/common');\nvar strings      = require('./utils/strings');\nvar msg          = require('./zlib/messages');\nvar ZStream      = require('./zlib/zstream');\n\nvar toString = Object.prototype.toString;\n\n/* Public constants ==========================================================*/\n/* ===========================================================================*/\n\nvar Z_NO_FLUSH      = 0;\nvar Z_FINISH        = 4;\n\nvar Z_OK            = 0;\nvar Z_STREAM_END    = 1;\nvar Z_SYNC_FLUSH    = 2;\n\nvar Z_DEFAULT_COMPRESSION = -1;\n\nvar Z_DEFAULT_STRATEGY    = 0;\n\nvar Z_DEFLATED  = 8;\n\n/* ===========================================================================*/\n\n\n/**\n * class Deflate\n *\n * Generic JS-style wrapper for zlib calls. If you don't need\n * streaming behaviour - use more simple functions: [[deflate]],\n * [[deflateRaw]] and [[gzip]].\n **/\n\n/* internal\n * Deflate.chunks -> Array\n *\n * Chunks of output data, if [[Deflate#onData]] not overriden.\n **/\n\n/**\n * Deflate.result -> Uint8Array|Array\n *\n * Compressed result, generated by default [[Deflate#onData]]\n * and [[Deflate#onEnd]] handlers. Filled after you push last chunk\n * (call [[Deflate#push]] with `Z_FINISH` / `true` param)  or if you\n * push a chunk with explicit flush (call [[Deflate#push]] with\n * `Z_SYNC_FLUSH` param).\n **/\n\n/**\n * Deflate.err -> Number\n *\n * Error code after deflate finished. 0 (Z_OK) on success.\n * You will not need it in real life, because deflate errors\n * are possible only on wrong options or bad `onData` / `onEnd`\n * custom handlers.\n **/\n\n/**\n * Deflate.msg -> String\n *\n * Error message, if [[Deflate.err]] != 0\n **/\n\n\n/**\n * new Deflate(options)\n * - options (Object): zlib deflate options.\n *\n * Creates new deflator instance with specified params. Throws exception\n * on bad params. Supported options:\n *\n * - `level`\n * - `windowBits`\n * - `memLevel`\n * - `strategy`\n * - `dictionary`\n *\n * [http://zlib.net/manual.html#Advanced](http://zlib.net/manual.html#Advanced)\n * for more information on these.\n *\n * Additional options, for internal needs:\n *\n * - `chunkSize` - size of generated data chunks (16K by default)\n * - `raw` (Boolean) - do raw deflate\n * - `gzip` (Boolean) - create gzip wrapper\n * - `to` (String) - if equal to 'string', then result will be \"binary string\"\n *    (each char code [0..255])\n * - `header` (Object) - custom header for gzip\n *   - `text` (Boolean) - true if compressed data believed to be text\n *   - `time` (Number) - modification time, unix timestamp\n *   - `os` (Number) - operation system code\n *   - `extra` (Array) - array of bytes with extra data (max 65536)\n *   - `name` (String) - file name (binary string)\n *   - `comment` (String) - comment (binary string)\n *   - `hcrc` (Boolean) - true if header crc should be added\n *\n * ##### Example:\n *\n * ```javascript\n * var pako = require('pako')\n *   , chunk1 = Uint8Array([1,2,3,4,5,6,7,8,9])\n *   , chunk2 = Uint8Array([10,11,12,13,14,15,16,17,18,19]);\n *\n * var deflate = new pako.Deflate({ level: 3});\n *\n * deflate.push(chunk1, false);\n * deflate.push(chunk2, true);  // true -> last chunk\n *\n * if (deflate.err) { throw new Error(deflate.err); }\n *\n * console.log(deflate.result);\n * ```\n **/\nfunction Deflate(options) {\n  if (!(this instanceof Deflate)) return new Deflate(options);\n\n  this.options = utils.assign({\n    level: Z_DEFAULT_COMPRESSION,\n    method: Z_DEFLATED,\n    chunkSize: 16384,\n    windowBits: 15,\n    memLevel: 8,\n    strategy: Z_DEFAULT_STRATEGY,\n    to: ''\n  }, options || {});\n\n  var opt = this.options;\n\n  if (opt.raw && (opt.windowBits > 0)) {\n    opt.windowBits = -opt.windowBits;\n  }\n\n  else if (opt.gzip && (opt.windowBits > 0) && (opt.windowBits < 16)) {\n    opt.windowBits += 16;\n  }\n\n  this.err    = 0;      // error code, if happens (0 = Z_OK)\n  this.msg    = '';     // error message\n  this.ended  = false;  // used to avoid multiple onEnd() calls\n  this.chunks = [];     // chunks of compressed data\n\n  this.strm = new ZStream();\n  this.strm.avail_out = 0;\n\n  var status = zlib_deflate.deflateInit2(\n    this.strm,\n    opt.level,\n    opt.method,\n    opt.windowBits,\n    opt.memLevel,\n    opt.strategy\n  );\n\n  if (status !== Z_OK) {\n    throw new Error(msg[status]);\n  }\n\n  if (opt.header) {\n    zlib_deflate.deflateSetHeader(this.strm, opt.header);\n  }\n\n  if (opt.dictionary) {\n    var dict;\n    // Convert data if needed\n    if (typeof opt.dictionary === 'string') {\n      // If we need to compress text, change encoding to utf8.\n      dict = strings.string2buf(opt.dictionary);\n    } else if (toString.call(opt.dictionary) === '[object ArrayBuffer]') {\n      dict = new Uint8Array(opt.dictionary);\n    } else {\n      dict = opt.dictionary;\n    }\n\n    status = zlib_deflate.deflateSetDictionary(this.strm, dict);\n\n    if (status !== Z_OK) {\n      throw new Error(msg[status]);\n    }\n\n    this._dict_set = true;\n  }\n}\n\n/**\n * Deflate#push(data[, mode]) -> Boolean\n * - data (Uint8Array|Array|ArrayBuffer|String): input data. Strings will be\n *   converted to utf8 byte sequence.\n * - mode (Number|Boolean): 0..6 for corresponding Z_NO_FLUSH..Z_TREE modes.\n *   See constants. Skipped or `false` means Z_NO_FLUSH, `true` meansh Z_FINISH.\n *\n * Sends input data to deflate pipe, generating [[Deflate#onData]] calls with\n * new compressed chunks. Returns `true` on success. The last data block must have\n * mode Z_FINISH (or `true`). That will flush internal pending buffers and call\n * [[Deflate#onEnd]]. For interim explicit flushes (without ending the stream) you\n * can use mode Z_SYNC_FLUSH, keeping the compression context.\n *\n * On fail call [[Deflate#onEnd]] with error code and return false.\n *\n * We strongly recommend to use `Uint8Array` on input for best speed (output\n * array format is detected automatically). Also, don't skip last param and always\n * use the same type in your code (boolean or number). That will improve JS speed.\n *\n * For regular `Array`-s make sure all elements are [0..255].\n *\n * ##### Example\n *\n * ```javascript\n * push(chunk, false); // push one of data chunks\n * ...\n * push(chunk, true);  // push last chunk\n * ```\n **/\nDeflate.prototype.push = function (data, mode) {\n  var strm = this.strm;\n  var chunkSize = this.options.chunkSize;\n  var status, _mode;\n\n  if (this.ended) { return false; }\n\n  _mode = (mode === ~~mode) ? mode : ((mode === true) ? Z_FINISH : Z_NO_FLUSH);\n\n  // Convert data if needed\n  if (typeof data === 'string') {\n    // If we need to compress text, change encoding to utf8.\n    strm.input = strings.string2buf(data);\n  } else if (toString.call(data) === '[object ArrayBuffer]') {\n    strm.input = new Uint8Array(data);\n  } else {\n    strm.input = data;\n  }\n\n  strm.next_in = 0;\n  strm.avail_in = strm.input.length;\n\n  do {\n    if (strm.avail_out === 0) {\n      strm.output = new utils.Buf8(chunkSize);\n      strm.next_out = 0;\n      strm.avail_out = chunkSize;\n    }\n    status = zlib_deflate.deflate(strm, _mode);    /* no bad return value */\n\n    if (status !== Z_STREAM_END && status !== Z_OK) {\n      this.onEnd(status);\n      this.ended = true;\n      return false;\n    }\n    if (strm.avail_out === 0 || (strm.avail_in === 0 && (_mode === Z_FINISH || _mode === Z_SYNC_FLUSH))) {\n      if (this.options.to === 'string') {\n        this.onData(strings.buf2binstring(utils.shrinkBuf(strm.output, strm.next_out)));\n      } else {\n        this.onData(utils.shrinkBuf(strm.output, strm.next_out));\n      }\n    }\n  } while ((strm.avail_in > 0 || strm.avail_out === 0) && status !== Z_STREAM_END);\n\n  // Finalize on the last chunk.\n  if (_mode === Z_FINISH) {\n    status = zlib_deflate.deflateEnd(this.strm);\n    this.onEnd(status);\n    this.ended = true;\n    return status === Z_OK;\n  }\n\n  // callback interim results if Z_SYNC_FLUSH.\n  if (_mode === Z_SYNC_FLUSH) {\n    this.onEnd(Z_OK);\n    strm.avail_out = 0;\n    return true;\n  }\n\n  return true;\n};\n\n\n/**\n * Deflate#onData(chunk) -> Void\n * - chunk (Uint8Array|Array|String): ouput data. Type of array depends\n *   on js engine support. When string output requested, each chunk\n *   will be string.\n *\n * By default, stores data blocks in `chunks[]` property and glue\n * those in `onEnd`. Override this handler, if you need another behaviour.\n **/\nDeflate.prototype.onData = function (chunk) {\n  this.chunks.push(chunk);\n};\n\n\n/**\n * Deflate#onEnd(status) -> Void\n * - status (Number): deflate status. 0 (Z_OK) on success,\n *   other if not.\n *\n * Called once after you tell deflate that the input stream is\n * complete (Z_FINISH) or should be flushed (Z_SYNC_FLUSH)\n * or if an error happened. By default - join collected chunks,\n * free memory and fill `results` / `err` properties.\n **/\nDeflate.prototype.onEnd = function (status) {\n  // On success - join\n  if (status === Z_OK) {\n    if (this.options.to === 'string') {\n      this.result = this.chunks.join('');\n    } else {\n      this.result = utils.flattenChunks(this.chunks);\n    }\n  }\n  this.chunks = [];\n  this.err = status;\n  this.msg = this.strm.msg;\n};\n\n\n/**\n * deflate(data[, options]) -> Uint8Array|Array|String\n * - data (Uint8Array|Array|String): input data to compress.\n * - options (Object): zlib deflate options.\n *\n * Compress `data` with deflate algorithm and `options`.\n *\n * Supported options are:\n *\n * - level\n * - windowBits\n * - memLevel\n * - strategy\n * - dictionary\n *\n * [http://zlib.net/manual.html#Advanced](http://zlib.net/manual.html#Advanced)\n * for more information on these.\n *\n * Sugar (options):\n *\n * - `raw` (Boolean) - say that we work with raw stream, if you don't wish to specify\n *   negative windowBits implicitly.\n * - `to` (String) - if equal to 'string', then result will be \"binary string\"\n *    (each char code [0..255])\n *\n * ##### Example:\n *\n * ```javascript\n * var pako = require('pako')\n *   , data = Uint8Array([1,2,3,4,5,6,7,8,9]);\n *\n * console.log(pako.deflate(data));\n * ```\n **/\nfunction deflate(input, options) {\n  var deflator = new Deflate(options);\n\n  deflator.push(input, true);\n\n  // That will never happens, if you don't cheat with options :)\n  if (deflator.err) { throw deflator.msg || msg[deflator.err]; }\n\n  return deflator.result;\n}\n\n\n/**\n * deflateRaw(data[, options]) -> Uint8Array|Array|String\n * - data (Uint8Array|Array|String): input data to compress.\n * - options (Object): zlib deflate options.\n *\n * The same as [[deflate]], but creates raw data, without wrapper\n * (header and adler32 crc).\n **/\nfunction deflateRaw(input, options) {\n  options = options || {};\n  options.raw = true;\n  return deflate(input, options);\n}\n\n\n/**\n * gzip(data[, options]) -> Uint8Array|Array|String\n * - data (Uint8Array|Array|String): input data to compress.\n * - options (Object): zlib deflate options.\n *\n * The same as [[deflate]], but create gzip wrapper instead of\n * deflate one.\n **/\nfunction gzip(input, options) {\n  options = options || {};\n  options.gzip = true;\n  return deflate(input, options);\n}\n\n\nexports.Deflate = Deflate;\nexports.deflate = deflate;\nexports.deflateRaw = deflateRaw;\nexports.gzip = gzip;\n\n},{\"./utils/common\":41,\"./utils/strings\":42,\"./zlib/deflate\":46,\"./zlib/messages\":51,\"./zlib/zstream\":53}],40:[function(require,module,exports){\n'use strict';\n\n\nvar zlib_inflate = require('./zlib/inflate');\nvar utils        = require('./utils/common');\nvar strings      = require('./utils/strings');\nvar c            = require('./zlib/constants');\nvar msg          = require('./zlib/messages');\nvar ZStream      = require('./zlib/zstream');\nvar GZheader     = require('./zlib/gzheader');\n\nvar toString = Object.prototype.toString;\n\n/**\n * class Inflate\n *\n * Generic JS-style wrapper for zlib calls. If you don't need\n * streaming behaviour - use more simple functions: [[inflate]]\n * and [[inflateRaw]].\n **/\n\n/* internal\n * inflate.chunks -> Array\n *\n * Chunks of output data, if [[Inflate#onData]] not overriden.\n **/\n\n/**\n * Inflate.result -> Uint8Array|Array|String\n *\n * Uncompressed result, generated by default [[Inflate#onData]]\n * and [[Inflate#onEnd]] handlers. Filled after you push last chunk\n * (call [[Inflate#push]] with `Z_FINISH` / `true` param) or if you\n * push a chunk with explicit flush (call [[Inflate#push]] with\n * `Z_SYNC_FLUSH` param).\n **/\n\n/**\n * Inflate.err -> Number\n *\n * Error code after inflate finished. 0 (Z_OK) on success.\n * Should be checked if broken data possible.\n **/\n\n/**\n * Inflate.msg -> String\n *\n * Error message, if [[Inflate.err]] != 0\n **/\n\n\n/**\n * new Inflate(options)\n * - options (Object): zlib inflate options.\n *\n * Creates new inflator instance with specified params. Throws exception\n * on bad params. Supported options:\n *\n * - `windowBits`\n * - `dictionary`\n *\n * [http://zlib.net/manual.html#Advanced](http://zlib.net/manual.html#Advanced)\n * for more information on these.\n *\n * Additional options, for internal needs:\n *\n * - `chunkSize` - size of generated data chunks (16K by default)\n * - `raw` (Boolean) - do raw inflate\n * - `to` (String) - if equal to 'string', then result will be converted\n *   from utf8 to utf16 (javascript) string. When string output requested,\n *   chunk length can differ from `chunkSize`, depending on content.\n *\n * By default, when no options set, autodetect deflate/gzip data format via\n * wrapper header.\n *\n * ##### Example:\n *\n * ```javascript\n * var pako = require('pako')\n *   , chunk1 = Uint8Array([1,2,3,4,5,6,7,8,9])\n *   , chunk2 = Uint8Array([10,11,12,13,14,15,16,17,18,19]);\n *\n * var inflate = new pako.Inflate({ level: 3});\n *\n * inflate.push(chunk1, false);\n * inflate.push(chunk2, true);  // true -> last chunk\n *\n * if (inflate.err) { throw new Error(inflate.err); }\n *\n * console.log(inflate.result);\n * ```\n **/\nfunction Inflate(options) {\n  if (!(this instanceof Inflate)) return new Inflate(options);\n\n  this.options = utils.assign({\n    chunkSize: 16384,\n    windowBits: 0,\n    to: ''\n  }, options || {});\n\n  var opt = this.options;\n\n  // Force window size for `raw` data, if not set directly,\n  // because we have no header for autodetect.\n  if (opt.raw && (opt.windowBits >= 0) && (opt.windowBits < 16)) {\n    opt.windowBits = -opt.windowBits;\n    if (opt.windowBits === 0) { opt.windowBits = -15; }\n  }\n\n  // If `windowBits` not defined (and mode not raw) - set autodetect flag for gzip/deflate\n  if ((opt.windowBits >= 0) && (opt.windowBits < 16) &&\n      !(options && options.windowBits)) {\n    opt.windowBits += 32;\n  }\n\n  // Gzip header has no info about windows size, we can do autodetect only\n  // for deflate. So, if window size not set, force it to max when gzip possible\n  if ((opt.windowBits > 15) && (opt.windowBits < 48)) {\n    // bit 3 (16) -> gzipped data\n    // bit 4 (32) -> autodetect gzip/deflate\n    if ((opt.windowBits & 15) === 0) {\n      opt.windowBits |= 15;\n    }\n  }\n\n  this.err    = 0;      // error code, if happens (0 = Z_OK)\n  this.msg    = '';     // error message\n  this.ended  = false;  // used to avoid multiple onEnd() calls\n  this.chunks = [];     // chunks of compressed data\n\n  this.strm   = new ZStream();\n  this.strm.avail_out = 0;\n\n  var status  = zlib_inflate.inflateInit2(\n    this.strm,\n    opt.windowBits\n  );\n\n  if (status !== c.Z_OK) {\n    throw new Error(msg[status]);\n  }\n\n  this.header = new GZheader();\n\n  zlib_inflate.inflateGetHeader(this.strm, this.header);\n}\n\n/**\n * Inflate#push(data[, mode]) -> Boolean\n * - data (Uint8Array|Array|ArrayBuffer|String): input data\n * - mode (Number|Boolean): 0..6 for corresponding Z_NO_FLUSH..Z_TREE modes.\n *   See constants. Skipped or `false` means Z_NO_FLUSH, `true` meansh Z_FINISH.\n *\n * Sends input data to inflate pipe, generating [[Inflate#onData]] calls with\n * new output chunks. Returns `true` on success. The last data block must have\n * mode Z_FINISH (or `true`). That will flush internal pending buffers and call\n * [[Inflate#onEnd]]. For interim explicit flushes (without ending the stream) you\n * can use mode Z_SYNC_FLUSH, keeping the decompression context.\n *\n * On fail call [[Inflate#onEnd]] with error code and return false.\n *\n * We strongly recommend to use `Uint8Array` on input for best speed (output\n * format is detected automatically). Also, don't skip last param and always\n * use the same type in your code (boolean or number). That will improve JS speed.\n *\n * For regular `Array`-s make sure all elements are [0..255].\n *\n * ##### Example\n *\n * ```javascript\n * push(chunk, false); // push one of data chunks\n * ...\n * push(chunk, true);  // push last chunk\n * ```\n **/\nInflate.prototype.push = function (data, mode) {\n  var strm = this.strm;\n  var chunkSize = this.options.chunkSize;\n  var dictionary = this.options.dictionary;\n  var status, _mode;\n  var next_out_utf8, tail, utf8str;\n  var dict;\n\n  // Flag to properly process Z_BUF_ERROR on testing inflate call\n  // when we check that all output data was flushed.\n  var allowBufError = false;\n\n  if (this.ended) { return false; }\n  _mode = (mode === ~~mode) ? mode : ((mode === true) ? c.Z_FINISH : c.Z_NO_FLUSH);\n\n  // Convert data if needed\n  if (typeof data === 'string') {\n    // Only binary strings can be decompressed on practice\n    strm.input = strings.binstring2buf(data);\n  } else if (toString.call(data) === '[object ArrayBuffer]') {\n    strm.input = new Uint8Array(data);\n  } else {\n    strm.input = data;\n  }\n\n  strm.next_in = 0;\n  strm.avail_in = strm.input.length;\n\n  do {\n    if (strm.avail_out === 0) {\n      strm.output = new utils.Buf8(chunkSize);\n      strm.next_out = 0;\n      strm.avail_out = chunkSize;\n    }\n\n    status = zlib_inflate.inflate(strm, c.Z_NO_FLUSH);    /* no bad return value */\n\n    if (status === c.Z_NEED_DICT && dictionary) {\n      // Convert data if needed\n      if (typeof dictionary === 'string') {\n        dict = strings.string2buf(dictionary);\n      } else if (toString.call(dictionary) === '[object ArrayBuffer]') {\n        dict = new Uint8Array(dictionary);\n      } else {\n        dict = dictionary;\n      }\n\n      status = zlib_inflate.inflateSetDictionary(this.strm, dict);\n\n    }\n\n    if (status === c.Z_BUF_ERROR && allowBufError === true) {\n      status = c.Z_OK;\n      allowBufError = false;\n    }\n\n    if (status !== c.Z_STREAM_END && status !== c.Z_OK) {\n      this.onEnd(status);\n      this.ended = true;\n      return false;\n    }\n\n    if (strm.next_out) {\n      if (strm.avail_out === 0 || status === c.Z_STREAM_END || (strm.avail_in === 0 && (_mode === c.Z_FINISH || _mode === c.Z_SYNC_FLUSH))) {\n\n        if (this.options.to === 'string') {\n\n          next_out_utf8 = strings.utf8border(strm.output, strm.next_out);\n\n          tail = strm.next_out - next_out_utf8;\n          utf8str = strings.buf2string(strm.output, next_out_utf8);\n\n          // move tail\n          strm.next_out = tail;\n          strm.avail_out = chunkSize - tail;\n          if (tail) { utils.arraySet(strm.output, strm.output, next_out_utf8, tail, 0); }\n\n          this.onData(utf8str);\n\n        } else {\n          this.onData(utils.shrinkBuf(strm.output, strm.next_out));\n        }\n      }\n    }\n\n    // When no more input data, we should check that internal inflate buffers\n    // are flushed. The only way to do it when avail_out = 0 - run one more\n    // inflate pass. But if output data not exists, inflate return Z_BUF_ERROR.\n    // Here we set flag to process this error properly.\n    //\n    // NOTE. Deflate does not return error in this case and does not needs such\n    // logic.\n    if (strm.avail_in === 0 && strm.avail_out === 0) {\n      allowBufError = true;\n    }\n\n  } while ((strm.avail_in > 0 || strm.avail_out === 0) && status !== c.Z_STREAM_END);\n\n  if (status === c.Z_STREAM_END) {\n    _mode = c.Z_FINISH;\n  }\n\n  // Finalize on the last chunk.\n  if (_mode === c.Z_FINISH) {\n    status = zlib_inflate.inflateEnd(this.strm);\n    this.onEnd(status);\n    this.ended = true;\n    return status === c.Z_OK;\n  }\n\n  // callback interim results if Z_SYNC_FLUSH.\n  if (_mode === c.Z_SYNC_FLUSH) {\n    this.onEnd(c.Z_OK);\n    strm.avail_out = 0;\n    return true;\n  }\n\n  return true;\n};\n\n\n/**\n * Inflate#onData(chunk) -> Void\n * - chunk (Uint8Array|Array|String): ouput data. Type of array depends\n *   on js engine support. When string output requested, each chunk\n *   will be string.\n *\n * By default, stores data blocks in `chunks[]` property and glue\n * those in `onEnd`. Override this handler, if you need another behaviour.\n **/\nInflate.prototype.onData = function (chunk) {\n  this.chunks.push(chunk);\n};\n\n\n/**\n * Inflate#onEnd(status) -> Void\n * - status (Number): inflate status. 0 (Z_OK) on success,\n *   other if not.\n *\n * Called either after you tell inflate that the input stream is\n * complete (Z_FINISH) or should be flushed (Z_SYNC_FLUSH)\n * or if an error happened. By default - join collected chunks,\n * free memory and fill `results` / `err` properties.\n **/\nInflate.prototype.onEnd = function (status) {\n  // On success - join\n  if (status === c.Z_OK) {\n    if (this.options.to === 'string') {\n      // Glue & convert here, until we teach pako to send\n      // utf8 alligned strings to onData\n      this.result = this.chunks.join('');\n    } else {\n      this.result = utils.flattenChunks(this.chunks);\n    }\n  }\n  this.chunks = [];\n  this.err = status;\n  this.msg = this.strm.msg;\n};\n\n\n/**\n * inflate(data[, options]) -> Uint8Array|Array|String\n * - data (Uint8Array|Array|String): input data to decompress.\n * - options (Object): zlib inflate options.\n *\n * Decompress `data` with inflate/ungzip and `options`. Autodetect\n * format via wrapper header by default. That's why we don't provide\n * separate `ungzip` method.\n *\n * Supported options are:\n *\n * - windowBits\n *\n * [http://zlib.net/manual.html#Advanced](http://zlib.net/manual.html#Advanced)\n * for more information.\n *\n * Sugar (options):\n *\n * - `raw` (Boolean) - say that we work with raw stream, if you don't wish to specify\n *   negative windowBits implicitly.\n * - `to` (String) - if equal to 'string', then result will be converted\n *   from utf8 to utf16 (javascript) string. When string output requested,\n *   chunk length can differ from `chunkSize`, depending on content.\n *\n *\n * ##### Example:\n *\n * ```javascript\n * var pako = require('pako')\n *   , input = pako.deflate([1,2,3,4,5,6,7,8,9])\n *   , output;\n *\n * try {\n *   output = pako.inflate(input);\n * } catch (err)\n *   console.log(err);\n * }\n * ```\n **/\nfunction inflate(input, options) {\n  var inflator = new Inflate(options);\n\n  inflator.push(input, true);\n\n  // That will never happens, if you don't cheat with options :)\n  if (inflator.err) { throw inflator.msg || msg[inflator.err]; }\n\n  return inflator.result;\n}\n\n\n/**\n * inflateRaw(data[, options]) -> Uint8Array|Array|String\n * - data (Uint8Array|Array|String): input data to decompress.\n * - options (Object): zlib inflate options.\n *\n * The same as [[inflate]], but creates raw data, without wrapper\n * (header and adler32 crc).\n **/\nfunction inflateRaw(input, options) {\n  options = options || {};\n  options.raw = true;\n  return inflate(input, options);\n}\n\n\n/**\n * ungzip(data[, options]) -> Uint8Array|Array|String\n * - data (Uint8Array|Array|String): input data to decompress.\n * - options (Object): zlib inflate options.\n *\n * Just shortcut to [[inflate]], because it autodetects format\n * by header.content. Done for convenience.\n **/\n\n\nexports.Inflate = Inflate;\nexports.inflate = inflate;\nexports.inflateRaw = inflateRaw;\nexports.ungzip  = inflate;\n\n},{\"./utils/common\":41,\"./utils/strings\":42,\"./zlib/constants\":44,\"./zlib/gzheader\":47,\"./zlib/inflate\":49,\"./zlib/messages\":51,\"./zlib/zstream\":53}],41:[function(require,module,exports){\n'use strict';\n\n\nvar TYPED_OK =  (typeof Uint8Array !== 'undefined') &&\n                (typeof Uint16Array !== 'undefined') &&\n                (typeof Int32Array !== 'undefined');\n\n\nexports.assign = function (obj /*from1, from2, from3, ...*/) {\n  var sources = Array.prototype.slice.call(arguments, 1);\n  while (sources.length) {\n    var source = sources.shift();\n    if (!source) { continue; }\n\n    if (typeof source !== 'object') {\n      throw new TypeError(source + 'must be non-object');\n    }\n\n    for (var p in source) {\n      if (source.hasOwnProperty(p)) {\n        obj[p] = source[p];\n      }\n    }\n  }\n\n  return obj;\n};\n\n\n// reduce buffer size, avoiding mem copy\nexports.shrinkBuf = function (buf, size) {\n  if (buf.length === size) { return buf; }\n  if (buf.subarray) { return buf.subarray(0, size); }\n  buf.length = size;\n  return buf;\n};\n\n\nvar fnTyped = {\n  arraySet: function (dest, src, src_offs, len, dest_offs) {\n    if (src.subarray && dest.subarray) {\n      dest.set(src.subarray(src_offs, src_offs + len), dest_offs);\n      return;\n    }\n    // Fallback to ordinary array\n    for (var i = 0; i < len; i++) {\n      dest[dest_offs + i] = src[src_offs + i];\n    }\n  },\n  // Join array of chunks to single array.\n  flattenChunks: function (chunks) {\n    var i, l, len, pos, chunk, result;\n\n    // calculate data length\n    len = 0;\n    for (i = 0, l = chunks.length; i < l; i++) {\n      len += chunks[i].length;\n    }\n\n    // join chunks\n    result = new Uint8Array(len);\n    pos = 0;\n    for (i = 0, l = chunks.length; i < l; i++) {\n      chunk = chunks[i];\n      result.set(chunk, pos);\n      pos += chunk.length;\n    }\n\n    return result;\n  }\n};\n\nvar fnUntyped = {\n  arraySet: function (dest, src, src_offs, len, dest_offs) {\n    for (var i = 0; i < len; i++) {\n      dest[dest_offs + i] = src[src_offs + i];\n    }\n  },\n  // Join array of chunks to single array.\n  flattenChunks: function (chunks) {\n    return [].concat.apply([], chunks);\n  }\n};\n\n\n// Enable/Disable typed arrays use, for testing\n//\nexports.setTyped = function (on) {\n  if (on) {\n    exports.Buf8  = Uint8Array;\n    exports.Buf16 = Uint16Array;\n    exports.Buf32 = Int32Array;\n    exports.assign(exports, fnTyped);\n  } else {\n    exports.Buf8  = Array;\n    exports.Buf16 = Array;\n    exports.Buf32 = Array;\n    exports.assign(exports, fnUntyped);\n  }\n};\n\nexports.setTyped(TYPED_OK);\n\n},{}],42:[function(require,module,exports){\n// String encode/decode helpers\n'use strict';\n\n\nvar utils = require('./common');\n\n\n// Quick check if we can use fast array to bin string conversion\n//\n// - apply(Array) can fail on Android 2.2\n// - apply(Uint8Array) can fail on iOS 5.1 Safary\n//\nvar STR_APPLY_OK = true;\nvar STR_APPLY_UIA_OK = true;\n\ntry { String.fromCharCode.apply(null, [ 0 ]); } catch (__) { STR_APPLY_OK = false; }\ntry { String.fromCharCode.apply(null, new Uint8Array(1)); } catch (__) { STR_APPLY_UIA_OK = false; }\n\n\n// Table with utf8 lengths (calculated by first byte of sequence)\n// Note, that 5 & 6-byte values and some 4-byte values can not be represented in JS,\n// because max possible codepoint is 0x10ffff\nvar _utf8len = new utils.Buf8(256);\nfor (var q = 0; q < 256; q++) {\n  _utf8len[q] = (q >= 252 ? 6 : q >= 248 ? 5 : q >= 240 ? 4 : q >= 224 ? 3 : q >= 192 ? 2 : 1);\n}\n_utf8len[254] = _utf8len[254] = 1; // Invalid sequence start\n\n\n// convert string to array (typed, when possible)\nexports.string2buf = function (str) {\n  var buf, c, c2, m_pos, i, str_len = str.length, buf_len = 0;\n\n  // count binary size\n  for (m_pos = 0; m_pos < str_len; m_pos++) {\n    c = str.charCodeAt(m_pos);\n    if ((c & 0xfc00) === 0xd800 && (m_pos + 1 < str_len)) {\n      c2 = str.charCodeAt(m_pos + 1);\n      if ((c2 & 0xfc00) === 0xdc00) {\n        c = 0x10000 + ((c - 0xd800) << 10) + (c2 - 0xdc00);\n        m_pos++;\n      }\n    }\n    buf_len += c < 0x80 ? 1 : c < 0x800 ? 2 : c < 0x10000 ? 3 : 4;\n  }\n\n  // allocate buffer\n  buf = new utils.Buf8(buf_len);\n\n  // convert\n  for (i = 0, m_pos = 0; i < buf_len; m_pos++) {\n    c = str.charCodeAt(m_pos);\n    if ((c & 0xfc00) === 0xd800 && (m_pos + 1 < str_len)) {\n      c2 = str.charCodeAt(m_pos + 1);\n      if ((c2 & 0xfc00) === 0xdc00) {\n        c = 0x10000 + ((c - 0xd800) << 10) + (c2 - 0xdc00);\n        m_pos++;\n      }\n    }\n    if (c < 0x80) {\n      /* one byte */\n      buf[i++] = c;\n    } else if (c < 0x800) {\n      /* two bytes */\n      buf[i++] = 0xC0 | (c >>> 6);\n      buf[i++] = 0x80 | (c & 0x3f);\n    } else if (c < 0x10000) {\n      /* three bytes */\n      buf[i++] = 0xE0 | (c >>> 12);\n      buf[i++] = 0x80 | (c >>> 6 & 0x3f);\n      buf[i++] = 0x80 | (c & 0x3f);\n    } else {\n      /* four bytes */\n      buf[i++] = 0xf0 | (c >>> 18);\n      buf[i++] = 0x80 | (c >>> 12 & 0x3f);\n      buf[i++] = 0x80 | (c >>> 6 & 0x3f);\n      buf[i++] = 0x80 | (c & 0x3f);\n    }\n  }\n\n  return buf;\n};\n\n// Helper (used in 2 places)\nfunction buf2binstring(buf, len) {\n  // use fallback for big arrays to avoid stack overflow\n  if (len < 65537) {\n    if ((buf.subarray && STR_APPLY_UIA_OK) || (!buf.subarray && STR_APPLY_OK)) {\n      return String.fromCharCode.apply(null, utils.shrinkBuf(buf, len));\n    }\n  }\n\n  var result = '';\n  for (var i = 0; i < len; i++) {\n    result += String.fromCharCode(buf[i]);\n  }\n  return result;\n}\n\n\n// Convert byte array to binary string\nexports.buf2binstring = function (buf) {\n  return buf2binstring(buf, buf.length);\n};\n\n\n// Convert binary string (typed, when possible)\nexports.binstring2buf = function (str) {\n  var buf = new utils.Buf8(str.length);\n  for (var i = 0, len = buf.length; i < len; i++) {\n    buf[i] = str.charCodeAt(i);\n  }\n  return buf;\n};\n\n\n// convert array to string\nexports.buf2string = function (buf, max) {\n  var i, out, c, c_len;\n  var len = max || buf.length;\n\n  // Reserve max possible length (2 words per char)\n  // NB: by unknown reasons, Array is significantly faster for\n  //     String.fromCharCode.apply than Uint16Array.\n  var utf16buf = new Array(len * 2);\n\n  for (out = 0, i = 0; i < len;) {\n    c = buf[i++];\n    // quick process ascii\n    if (c < 0x80) { utf16buf[out++] = c; continue; }\n\n    c_len = _utf8len[c];\n    // skip 5 & 6 byte codes\n    if (c_len > 4) { utf16buf[out++] = 0xfffd; i += c_len - 1; continue; }\n\n    // apply mask on first byte\n    c &= c_len === 2 ? 0x1f : c_len === 3 ? 0x0f : 0x07;\n    // join the rest\n    while (c_len > 1 && i < len) {\n      c = (c << 6) | (buf[i++] & 0x3f);\n      c_len--;\n    }\n\n    // terminated by end of string?\n    if (c_len > 1) { utf16buf[out++] = 0xfffd; continue; }\n\n    if (c < 0x10000) {\n      utf16buf[out++] = c;\n    } else {\n      c -= 0x10000;\n      utf16buf[out++] = 0xd800 | ((c >> 10) & 0x3ff);\n      utf16buf[out++] = 0xdc00 | (c & 0x3ff);\n    }\n  }\n\n  return buf2binstring(utf16buf, out);\n};\n\n\n// Calculate max possible position in utf8 buffer,\n// that will not break sequence. If that's not possible\n// - (very small limits) return max size as is.\n//\n// buf[] - utf8 bytes array\n// max   - length limit (mandatory);\nexports.utf8border = function (buf, max) {\n  var pos;\n\n  max = max || buf.length;\n  if (max > buf.length) { max = buf.length; }\n\n  // go back from last position, until start of sequence found\n  pos = max - 1;\n  while (pos >= 0 && (buf[pos] & 0xC0) === 0x80) { pos--; }\n\n  // Fuckup - very small and broken sequence,\n  // return max, because we should return something anyway.\n  if (pos < 0) { return max; }\n\n  // If we came to start of buffer - that means vuffer is too small,\n  // return max too.\n  if (pos === 0) { return max; }\n\n  return (pos + _utf8len[buf[pos]] > max) ? pos : max;\n};\n\n},{\"./common\":41}],43:[function(require,module,exports){\n'use strict';\n\n// Note: adler32 takes 12% for level 0 and 2% for level 6.\n// It doesn't worth to make additional optimizationa as in original.\n// Small size is preferable.\n\n// (C) 1995-2013 Jean-loup Gailly and Mark Adler\n// (C) 2014-2017 Vitaly Puzrin and Andrey Tupitsin\n//\n// This software is provided 'as-is', without any express or implied\n// warranty. In no event will the authors be held liable for any damages\n// arising from the use of this software.\n//\n// Permission is granted to anyone to use this software for any purpose,\n// including commercial applications, and to alter it and redistribute it\n// freely, subject to the following restrictions:\n//\n// 1. The origin of this software must not be misrepresented; you must not\n//   claim that you wrote the original software. If you use this software\n//   in a product, an acknowledgment in the product documentation would be\n//   appreciated but is not required.\n// 2. Altered source versions must be plainly marked as such, and must not be\n//   misrepresented as being the original software.\n// 3. This notice may not be removed or altered from any source distribution.\n\nfunction adler32(adler, buf, len, pos) {\n  var s1 = (adler & 0xffff) |0,\n      s2 = ((adler >>> 16) & 0xffff) |0,\n      n = 0;\n\n  while (len !== 0) {\n    // Set limit ~ twice less than 5552, to keep\n    // s2 in 31-bits, because we force signed ints.\n    // in other case %= will fail.\n    n = len > 2000 ? 2000 : len;\n    len -= n;\n\n    do {\n      s1 = (s1 + buf[pos++]) |0;\n      s2 = (s2 + s1) |0;\n    } while (--n);\n\n    s1 %= 65521;\n    s2 %= 65521;\n  }\n\n  return (s1 | (s2 << 16)) |0;\n}\n\n\nmodule.exports = adler32;\n\n},{}],44:[function(require,module,exports){\n'use strict';\n\n// (C) 1995-2013 Jean-loup Gailly and Mark Adler\n// (C) 2014-2017 Vitaly Puzrin and Andrey Tupitsin\n//\n// This software is provided 'as-is', without any express or implied\n// warranty. In no event will the authors be held liable for any damages\n// arising from the use of this software.\n//\n// Permission is granted to anyone to use this software for any purpose,\n// including commercial applications, and to alter it and redistribute it\n// freely, subject to the following restrictions:\n//\n// 1. The origin of this software must not be misrepresented; you must not\n//   claim that you wrote the original software. If you use this software\n//   in a product, an acknowledgment in the product documentation would be\n//   appreciated but is not required.\n// 2. Altered source versions must be plainly marked as such, and must not be\n//   misrepresented as being the original software.\n// 3. This notice may not be removed or altered from any source distribution.\n\nmodule.exports = {\n\n  /* Allowed flush values; see deflate() and inflate() below for details */\n  Z_NO_FLUSH:         0,\n  Z_PARTIAL_FLUSH:    1,\n  Z_SYNC_FLUSH:       2,\n  Z_FULL_FLUSH:       3,\n  Z_FINISH:           4,\n  Z_BLOCK:            5,\n  Z_TREES:            6,\n\n  /* Return codes for the compression/decompression functions. Negative values\n  * are errors, positive values are used for special but normal events.\n  */\n  Z_OK:               0,\n  Z_STREAM_END:       1,\n  Z_NEED_DICT:        2,\n  Z_ERRNO:           -1,\n  Z_STREAM_ERROR:    -2,\n  Z_DATA_ERROR:      -3,\n  //Z_MEM_ERROR:     -4,\n  Z_BUF_ERROR:       -5,\n  //Z_VERSION_ERROR: -6,\n\n  /* compression levels */\n  Z_NO_COMPRESSION:         0,\n  Z_BEST_SPEED:             1,\n  Z_BEST_COMPRESSION:       9,\n  Z_DEFAULT_COMPRESSION:   -1,\n\n\n  Z_FILTERED:               1,\n  Z_HUFFMAN_ONLY:           2,\n  Z_RLE:                    3,\n  Z_FIXED:                  4,\n  Z_DEFAULT_STRATEGY:       0,\n\n  /* Possible values of the data_type field (though see inflate()) */\n  Z_BINARY:                 0,\n  Z_TEXT:                   1,\n  //Z_ASCII:                1, // = Z_TEXT (deprecated)\n  Z_UNKNOWN:                2,\n\n  /* The deflate compression method */\n  Z_DEFLATED:               8\n  //Z_NULL:                 null // Use -1 or null inline, depending on var type\n};\n\n},{}],45:[function(require,module,exports){\n'use strict';\n\n// Note: we can't get significant speed boost here.\n// So write code to minimize size - no pregenerated tables\n// and array tools dependencies.\n\n// (C) 1995-2013 Jean-loup Gailly and Mark Adler\n// (C) 2014-2017 Vitaly Puzrin and Andrey Tupitsin\n//\n// This software is provided 'as-is', without any express or implied\n// warranty. In no event will the authors be held liable for any damages\n// arising from the use of this software.\n//\n// Permission is granted to anyone to use this software for any purpose,\n// including commercial applications, and to alter it and redistribute it\n// freely, subject to the following restrictions:\n//\n// 1. The origin of this software must not be misrepresented; you must not\n//   claim that you wrote the original software. If you use this software\n//   in a product, an acknowledgment in the product documentation would be\n//   appreciated but is not required.\n// 2. Altered source versions must be plainly marked as such, and must not be\n//   misrepresented as being the original software.\n// 3. This notice may not be removed or altered from any source distribution.\n\n// Use ordinary array, since untyped makes no boost here\nfunction makeTable() {\n  var c, table = [];\n\n  for (var n = 0; n < 256; n++) {\n    c = n;\n    for (var k = 0; k < 8; k++) {\n      c = ((c & 1) ? (0xEDB88320 ^ (c >>> 1)) : (c >>> 1));\n    }\n    table[n] = c;\n  }\n\n  return table;\n}\n\n// Create table on load. Just 255 signed longs. Not a problem.\nvar crcTable = makeTable();\n\n\nfunction crc32(crc, buf, len, pos) {\n  var t = crcTable,\n      end = pos + len;\n\n  crc ^= -1;\n\n  for (var i = pos; i < end; i++) {\n    crc = (crc >>> 8) ^ t[(crc ^ buf[i]) & 0xFF];\n  }\n\n  return (crc ^ (-1)); // >>> 0;\n}\n\n\nmodule.exports = crc32;\n\n},{}],46:[function(require,module,exports){\n'use strict';\n\n// (C) 1995-2013 Jean-loup Gailly and Mark Adler\n// (C) 2014-2017 Vitaly Puzrin and Andrey Tupitsin\n//\n// This software is provided 'as-is', without any express or implied\n// warranty. In no event will the authors be held liable for any damages\n// arising from the use of this software.\n//\n// Permission is granted to anyone to use this software for any purpose,\n// including commercial applications, and to alter it and redistribute it\n// freely, subject to the following restrictions:\n//\n// 1. The origin of this software must not be misrepresented; you must not\n//   claim that you wrote the original software. If you use this software\n//   in a product, an acknowledgment in the product documentation would be\n//   appreciated but is not required.\n// 2. Altered source versions must be plainly marked as such, and must not be\n//   misrepresented as being the original software.\n// 3. This notice may not be removed or altered from any source distribution.\n\nvar utils   = require('../utils/common');\nvar trees   = require('./trees');\nvar adler32 = require('./adler32');\nvar crc32   = require('./crc32');\nvar msg     = require('./messages');\n\n/* Public constants ==========================================================*/\n/* ===========================================================================*/\n\n\n/* Allowed flush values; see deflate() and inflate() below for details */\nvar Z_NO_FLUSH      = 0;\nvar Z_PARTIAL_FLUSH = 1;\n//var Z_SYNC_FLUSH    = 2;\nvar Z_FULL_FLUSH    = 3;\nvar Z_FINISH        = 4;\nvar Z_BLOCK         = 5;\n//var Z_TREES         = 6;\n\n\n/* Return codes for the compression/decompression functions. Negative values\n * are errors, positive values are used for special but normal events.\n */\nvar Z_OK            = 0;\nvar Z_STREAM_END    = 1;\n//var Z_NEED_DICT     = 2;\n//var Z_ERRNO         = -1;\nvar Z_STREAM_ERROR  = -2;\nvar Z_DATA_ERROR    = -3;\n//var Z_MEM_ERROR     = -4;\nvar Z_BUF_ERROR     = -5;\n//var Z_VERSION_ERROR = -6;\n\n\n/* compression levels */\n//var Z_NO_COMPRESSION      = 0;\n//var Z_BEST_SPEED          = 1;\n//var Z_BEST_COMPRESSION    = 9;\nvar Z_DEFAULT_COMPRESSION = -1;\n\n\nvar Z_FILTERED            = 1;\nvar Z_HUFFMAN_ONLY        = 2;\nvar Z_RLE                 = 3;\nvar Z_FIXED               = 4;\nvar Z_DEFAULT_STRATEGY    = 0;\n\n/* Possible values of the data_type field (though see inflate()) */\n//var Z_BINARY              = 0;\n//var Z_TEXT                = 1;\n//var Z_ASCII               = 1; // = Z_TEXT\nvar Z_UNKNOWN             = 2;\n\n\n/* The deflate compression method */\nvar Z_DEFLATED  = 8;\n\n/*============================================================================*/\n\n\nvar MAX_MEM_LEVEL = 9;\n/* Maximum value for memLevel in deflateInit2 */\nvar MAX_WBITS = 15;\n/* 32K LZ77 window */\nvar DEF_MEM_LEVEL = 8;\n\n\nvar LENGTH_CODES  = 29;\n/* number of length codes, not counting the special END_BLOCK code */\nvar LITERALS      = 256;\n/* number of literal bytes 0..255 */\nvar L_CODES       = LITERALS + 1 + LENGTH_CODES;\n/* number of Literal or Length codes, including the END_BLOCK code */\nvar D_CODES       = 30;\n/* number of distance codes */\nvar BL_CODES      = 19;\n/* number of codes used to transfer the bit lengths */\nvar HEAP_SIZE     = 2 * L_CODES + 1;\n/* maximum heap size */\nvar MAX_BITS  = 15;\n/* All codes must not exceed MAX_BITS bits */\n\nvar MIN_MATCH = 3;\nvar MAX_MATCH = 258;\nvar MIN_LOOKAHEAD = (MAX_MATCH + MIN_MATCH + 1);\n\nvar PRESET_DICT = 0x20;\n\nvar INIT_STATE = 42;\nvar EXTRA_STATE = 69;\nvar NAME_STATE = 73;\nvar COMMENT_STATE = 91;\nvar HCRC_STATE = 103;\nvar BUSY_STATE = 113;\nvar FINISH_STATE = 666;\n\nvar BS_NEED_MORE      = 1; /* block not completed, need more input or more output */\nvar BS_BLOCK_DONE     = 2; /* block flush performed */\nvar BS_FINISH_STARTED = 3; /* finish started, need only more output at next deflate */\nvar BS_FINISH_DONE    = 4; /* finish done, accept no more input or output */\n\nvar OS_CODE = 0x03; // Unix :) . Don't detect, use this default.\n\nfunction err(strm, errorCode) {\n  strm.msg = msg[errorCode];\n  return errorCode;\n}\n\nfunction rank(f) {\n  return ((f) << 1) - ((f) > 4 ? 9 : 0);\n}\n\nfunction zero(buf) { var len = buf.length; while (--len >= 0) { buf[len] = 0; } }\n\n\n/* =========================================================================\n * Flush as much pending output as possible. All deflate() output goes\n * through this function so some applications may wish to modify it\n * to avoid allocating a large strm->output buffer and copying into it.\n * (See also read_buf()).\n */\nfunction flush_pending(strm) {\n  var s = strm.state;\n\n  //_tr_flush_bits(s);\n  var len = s.pending;\n  if (len > strm.avail_out) {\n    len = strm.avail_out;\n  }\n  if (len === 0) { return; }\n\n  utils.arraySet(strm.output, s.pending_buf, s.pending_out, len, strm.next_out);\n  strm.next_out += len;\n  s.pending_out += len;\n  strm.total_out += len;\n  strm.avail_out -= len;\n  s.pending -= len;\n  if (s.pending === 0) {\n    s.pending_out = 0;\n  }\n}\n\n\nfunction flush_block_only(s, last) {\n  trees._tr_flush_block(s, (s.block_start >= 0 ? s.block_start : -1), s.strstart - s.block_start, last);\n  s.block_start = s.strstart;\n  flush_pending(s.strm);\n}\n\n\nfunction put_byte(s, b) {\n  s.pending_buf[s.pending++] = b;\n}\n\n\n/* =========================================================================\n * Put a short in the pending buffer. The 16-bit value is put in MSB order.\n * IN assertion: the stream state is correct and there is enough room in\n * pending_buf.\n */\nfunction putShortMSB(s, b) {\n//  put_byte(s, (Byte)(b >> 8));\n//  put_byte(s, (Byte)(b & 0xff));\n  s.pending_buf[s.pending++] = (b >>> 8) & 0xff;\n  s.pending_buf[s.pending++] = b & 0xff;\n}\n\n\n/* ===========================================================================\n * Read a new buffer from the current input stream, update the adler32\n * and total number of bytes read.  All deflate() input goes through\n * this function so some applications may wish to modify it to avoid\n * allocating a large strm->input buffer and copying from it.\n * (See also flush_pending()).\n */\nfunction read_buf(strm, buf, start, size) {\n  var len = strm.avail_in;\n\n  if (len > size) { len = size; }\n  if (len === 0) { return 0; }\n\n  strm.avail_in -= len;\n\n  // zmemcpy(buf, strm->next_in, len);\n  utils.arraySet(buf, strm.input, strm.next_in, len, start);\n  if (strm.state.wrap === 1) {\n    strm.adler = adler32(strm.adler, buf, len, start);\n  }\n\n  else if (strm.state.wrap === 2) {\n    strm.adler = crc32(strm.adler, buf, len, start);\n  }\n\n  strm.next_in += len;\n  strm.total_in += len;\n\n  return len;\n}\n\n\n/* ===========================================================================\n * Set match_start to the longest match starting at the given string and\n * return its length. Matches shorter or equal to prev_length are discarded,\n * in which case the result is equal to prev_length and match_start is\n * garbage.\n * IN assertions: cur_match is the head of the hash chain for the current\n *   string (strstart) and its distance is <= MAX_DIST, and prev_length >= 1\n * OUT assertion: the match length is not greater than s->lookahead.\n */\nfunction longest_match(s, cur_match) {\n  var chain_length = s.max_chain_length;      /* max hash chain length */\n  var scan = s.strstart; /* current string */\n  var match;                       /* matched string */\n  var len;                           /* length of current match */\n  var best_len = s.prev_length;              /* best match length so far */\n  var nice_match = s.nice_match;             /* stop if match long enough */\n  var limit = (s.strstart > (s.w_size - MIN_LOOKAHEAD)) ?\n      s.strstart - (s.w_size - MIN_LOOKAHEAD) : 0/*NIL*/;\n\n  var _win = s.window; // shortcut\n\n  var wmask = s.w_mask;\n  var prev  = s.prev;\n\n  /* Stop when cur_match becomes <= limit. To simplify the code,\n   * we prevent matches with the string of window index 0.\n   */\n\n  var strend = s.strstart + MAX_MATCH;\n  var scan_end1  = _win[scan + best_len - 1];\n  var scan_end   = _win[scan + best_len];\n\n  /* The code is optimized for HASH_BITS >= 8 and MAX_MATCH-2 multiple of 16.\n   * It is easy to get rid of this optimization if necessary.\n   */\n  // Assert(s->hash_bits >= 8 && MAX_MATCH == 258, \"Code too clever\");\n\n  /* Do not waste too much time if we already have a good match: */\n  if (s.prev_length >= s.good_match) {\n    chain_length >>= 2;\n  }\n  /* Do not look for matches beyond the end of the input. This is necessary\n   * to make deflate deterministic.\n   */\n  if (nice_match > s.lookahead) { nice_match = s.lookahead; }\n\n  // Assert((ulg)s->strstart <= s->window_size-MIN_LOOKAHEAD, \"need lookahead\");\n\n  do {\n    // Assert(cur_match < s->strstart, \"no future\");\n    match = cur_match;\n\n    /* Skip to next match if the match length cannot increase\n     * or if the match length is less than 2.  Note that the checks below\n     * for insufficient lookahead only occur occasionally for performance\n     * reasons.  Therefore uninitialized memory will be accessed, and\n     * conditional jumps will be made that depend on those values.\n     * However the length of the match is limited to the lookahead, so\n     * the output of deflate is not affected by the uninitialized values.\n     */\n\n    if (_win[match + best_len]     !== scan_end  ||\n        _win[match + best_len - 1] !== scan_end1 ||\n        _win[match]                !== _win[scan] ||\n        _win[++match]              !== _win[scan + 1]) {\n      continue;\n    }\n\n    /* The check at best_len-1 can be removed because it will be made\n     * again later. (This heuristic is not always a win.)\n     * It is not necessary to compare scan[2] and match[2] since they\n     * are always equal when the other bytes match, given that\n     * the hash keys are equal and that HASH_BITS >= 8.\n     */\n    scan += 2;\n    match++;\n    // Assert(*scan == *match, \"match[2]?\");\n\n    /* We check for insufficient lookahead only every 8th comparison;\n     * the 256th check will be made at strstart+258.\n     */\n    do {\n      /*jshint noempty:false*/\n    } while (_win[++scan] === _win[++match] && _win[++scan] === _win[++match] &&\n             _win[++scan] === _win[++match] && _win[++scan] === _win[++match] &&\n             _win[++scan] === _win[++match] && _win[++scan] === _win[++match] &&\n             _win[++scan] === _win[++match] && _win[++scan] === _win[++match] &&\n             scan < strend);\n\n    // Assert(scan <= s->window+(unsigned)(s->window_size-1), \"wild scan\");\n\n    len = MAX_MATCH - (strend - scan);\n    scan = strend - MAX_MATCH;\n\n    if (len > best_len) {\n      s.match_start = cur_match;\n      best_len = len;\n      if (len >= nice_match) {\n        break;\n      }\n      scan_end1  = _win[scan + best_len - 1];\n      scan_end   = _win[scan + best_len];\n    }\n  } while ((cur_match = prev[cur_match & wmask]) > limit && --chain_length !== 0);\n\n  if (best_len <= s.lookahead) {\n    return best_len;\n  }\n  return s.lookahead;\n}\n\n\n/* ===========================================================================\n * Fill the window when the lookahead becomes insufficient.\n * Updates strstart and lookahead.\n *\n * IN assertion: lookahead < MIN_LOOKAHEAD\n * OUT assertions: strstart <= window_size-MIN_LOOKAHEAD\n *    At least one byte has been read, or avail_in == 0; reads are\n *    performed for at least two bytes (required for the zip translate_eol\n *    option -- not supported here).\n */\nfunction fill_window(s) {\n  var _w_size = s.w_size;\n  var p, n, m, more, str;\n\n  //Assert(s->lookahead < MIN_LOOKAHEAD, \"already enough lookahead\");\n\n  do {\n    more = s.window_size - s.lookahead - s.strstart;\n\n    // JS ints have 32 bit, block below not needed\n    /* Deal with !@#$% 64K limit: */\n    //if (sizeof(int) <= 2) {\n    //    if (more == 0 && s->strstart == 0 && s->lookahead == 0) {\n    //        more = wsize;\n    //\n    //  } else if (more == (unsigned)(-1)) {\n    //        /* Very unlikely, but possible on 16 bit machine if\n    //         * strstart == 0 && lookahead == 1 (input done a byte at time)\n    //         */\n    //        more--;\n    //    }\n    //}\n\n\n    /* If the window is almost full and there is insufficient lookahead,\n     * move the upper half to the lower one to make room in the upper half.\n     */\n    if (s.strstart >= _w_size + (_w_size - MIN_LOOKAHEAD)) {\n\n      utils.arraySet(s.window, s.window, _w_size, _w_size, 0);\n      s.match_start -= _w_size;\n      s.strstart -= _w_size;\n      /* we now have strstart >= MAX_DIST */\n      s.block_start -= _w_size;\n\n      /* Slide the hash table (could be avoided with 32 bit values\n       at the expense of memory usage). We slide even when level == 0\n       to keep the hash table consistent if we switch back to level > 0\n       later. (Using level 0 permanently is not an optimal usage of\n       zlib, so we don't care about this pathological case.)\n       */\n\n      n = s.hash_size;\n      p = n;\n      do {\n        m = s.head[--p];\n        s.head[p] = (m >= _w_size ? m - _w_size : 0);\n      } while (--n);\n\n      n = _w_size;\n      p = n;\n      do {\n        m = s.prev[--p];\n        s.prev[p] = (m >= _w_size ? m - _w_size : 0);\n        /* If n is not on any hash chain, prev[n] is garbage but\n         * its value will never be used.\n         */\n      } while (--n);\n\n      more += _w_size;\n    }\n    if (s.strm.avail_in === 0) {\n      break;\n    }\n\n    /* If there was no sliding:\n     *    strstart <= WSIZE+MAX_DIST-1 && lookahead <= MIN_LOOKAHEAD - 1 &&\n     *    more == window_size - lookahead - strstart\n     * => more >= window_size - (MIN_LOOKAHEAD-1 + WSIZE + MAX_DIST-1)\n     * => more >= window_size - 2*WSIZE + 2\n     * In the BIG_MEM or MMAP case (not yet supported),\n     *   window_size == input_size + MIN_LOOKAHEAD  &&\n     *   strstart + s->lookahead <= input_size => more >= MIN_LOOKAHEAD.\n     * Otherwise, window_size == 2*WSIZE so more >= 2.\n     * If there was sliding, more >= WSIZE. So in all cases, more >= 2.\n     */\n    //Assert(more >= 2, \"more < 2\");\n    n = read_buf(s.strm, s.window, s.strstart + s.lookahead, more);\n    s.lookahead += n;\n\n    /* Initialize the hash value now that we have some input: */\n    if (s.lookahead + s.insert >= MIN_MATCH) {\n      str = s.strstart - s.insert;\n      s.ins_h = s.window[str];\n\n      /* UPDATE_HASH(s, s->ins_h, s->window[str + 1]); */\n      s.ins_h = ((s.ins_h << s.hash_shift) ^ s.window[str + 1]) & s.hash_mask;\n//#if MIN_MATCH != 3\n//        Call update_hash() MIN_MATCH-3 more times\n//#endif\n      while (s.insert) {\n        /* UPDATE_HASH(s, s->ins_h, s->window[str + MIN_MATCH-1]); */\n        s.ins_h = ((s.ins_h << s.hash_shift) ^ s.window[str + MIN_MATCH - 1]) & s.hash_mask;\n\n        s.prev[str & s.w_mask] = s.head[s.ins_h];\n        s.head[s.ins_h] = str;\n        str++;\n        s.insert--;\n        if (s.lookahead + s.insert < MIN_MATCH) {\n          break;\n        }\n      }\n    }\n    /* If the whole input has less than MIN_MATCH bytes, ins_h is garbage,\n     * but this is not important since only literal bytes will be emitted.\n     */\n\n  } while (s.lookahead < MIN_LOOKAHEAD && s.strm.avail_in !== 0);\n\n  /* If the WIN_INIT bytes after the end of the current data have never been\n   * written, then zero those bytes in order to avoid memory check reports of\n   * the use of uninitialized (or uninitialised as Julian writes) bytes by\n   * the longest match routines.  Update the high water mark for the next\n   * time through here.  WIN_INIT is set to MAX_MATCH since the longest match\n   * routines allow scanning to strstart + MAX_MATCH, ignoring lookahead.\n   */\n//  if (s.high_water < s.window_size) {\n//    var curr = s.strstart + s.lookahead;\n//    var init = 0;\n//\n//    if (s.high_water < curr) {\n//      /* Previous high water mark below current data -- zero WIN_INIT\n//       * bytes or up to end of window, whichever is less.\n//       */\n//      init = s.window_size - curr;\n//      if (init > WIN_INIT)\n//        init = WIN_INIT;\n//      zmemzero(s->window + curr, (unsigned)init);\n//      s->high_water = curr + init;\n//    }\n//    else if (s->high_water < (ulg)curr + WIN_INIT) {\n//      /* High water mark at or above current data, but below current data\n//       * plus WIN_INIT -- zero out to current data plus WIN_INIT, or up\n//       * to end of window, whichever is less.\n//       */\n//      init = (ulg)curr + WIN_INIT - s->high_water;\n//      if (init > s->window_size - s->high_water)\n//        init = s->window_size - s->high_water;\n//      zmemzero(s->window + s->high_water, (unsigned)init);\n//      s->high_water += init;\n//    }\n//  }\n//\n//  Assert((ulg)s->strstart <= s->window_size - MIN_LOOKAHEAD,\n//    \"not enough room for search\");\n}\n\n/* ===========================================================================\n * Copy without compression as much as possible from the input stream, return\n * the current block state.\n * This function does not insert new strings in the dictionary since\n * uncompressible data is probably not useful. This function is used\n * only for the level=0 compression option.\n * NOTE: this function should be optimized to avoid extra copying from\n * window to pending_buf.\n */\nfunction deflate_stored(s, flush) {\n  /* Stored blocks are limited to 0xffff bytes, pending_buf is limited\n   * to pending_buf_size, and each stored block has a 5 byte header:\n   */\n  var max_block_size = 0xffff;\n\n  if (max_block_size > s.pending_buf_size - 5) {\n    max_block_size = s.pending_buf_size - 5;\n  }\n\n  /* Copy as much as possible from input to output: */\n  for (;;) {\n    /* Fill the window as much as possible: */\n    if (s.lookahead <= 1) {\n\n      //Assert(s->strstart < s->w_size+MAX_DIST(s) ||\n      //  s->block_start >= (long)s->w_size, \"slide too late\");\n//      if (!(s.strstart < s.w_size + (s.w_size - MIN_LOOKAHEAD) ||\n//        s.block_start >= s.w_size)) {\n//        throw  new Error(\"slide too late\");\n//      }\n\n      fill_window(s);\n      if (s.lookahead === 0 && flush === Z_NO_FLUSH) {\n        return BS_NEED_MORE;\n      }\n\n      if (s.lookahead === 0) {\n        break;\n      }\n      /* flush the current block */\n    }\n    //Assert(s->block_start >= 0L, \"block gone\");\n//    if (s.block_start < 0) throw new Error(\"block gone\");\n\n    s.strstart += s.lookahead;\n    s.lookahead = 0;\n\n    /* Emit a stored block if pending_buf will be full: */\n    var max_start = s.block_start + max_block_size;\n\n    if (s.strstart === 0 || s.strstart >= max_start) {\n      /* strstart == 0 is possible when wraparound on 16-bit machine */\n      s.lookahead = s.strstart - max_start;\n      s.strstart = max_start;\n      /*** FLUSH_BLOCK(s, 0); ***/\n      flush_block_only(s, false);\n      if (s.strm.avail_out === 0) {\n        return BS_NEED_MORE;\n      }\n      /***/\n\n\n    }\n    /* Flush if we may have to slide, otherwise block_start may become\n     * negative and the data will be gone:\n     */\n    if (s.strstart - s.block_start >= (s.w_size - MIN_LOOKAHEAD)) {\n      /*** FLUSH_BLOCK(s, 0); ***/\n      flush_block_only(s, false);\n      if (s.strm.avail_out === 0) {\n        return BS_NEED_MORE;\n      }\n      /***/\n    }\n  }\n\n  s.insert = 0;\n\n  if (flush === Z_FINISH) {\n    /*** FLUSH_BLOCK(s, 1); ***/\n    flush_block_only(s, true);\n    if (s.strm.avail_out === 0) {\n      return BS_FINISH_STARTED;\n    }\n    /***/\n    return BS_FINISH_DONE;\n  }\n\n  if (s.strstart > s.block_start) {\n    /*** FLUSH_BLOCK(s, 0); ***/\n    flush_block_only(s, false);\n    if (s.strm.avail_out === 0) {\n      return BS_NEED_MORE;\n    }\n    /***/\n  }\n\n  return BS_NEED_MORE;\n}\n\n/* ===========================================================================\n * Compress as much as possible from the input stream, return the current\n * block state.\n * This function does not perform lazy evaluation of matches and inserts\n * new strings in the dictionary only for unmatched strings or for short\n * matches. It is used only for the fast compression options.\n */\nfunction deflate_fast(s, flush) {\n  var hash_head;        /* head of the hash chain */\n  var bflush;           /* set if current block must be flushed */\n\n  for (;;) {\n    /* Make sure that we always have enough lookahead, except\n     * at the end of the input file. We need MAX_MATCH bytes\n     * for the next match, plus MIN_MATCH bytes to insert the\n     * string following the next match.\n     */\n    if (s.lookahead < MIN_LOOKAHEAD) {\n      fill_window(s);\n      if (s.lookahead < MIN_LOOKAHEAD && flush === Z_NO_FLUSH) {\n        return BS_NEED_MORE;\n      }\n      if (s.lookahead === 0) {\n        break; /* flush the current block */\n      }\n    }\n\n    /* Insert the string window[strstart .. strstart+2] in the\n     * dictionary, and set hash_head to the head of the hash chain:\n     */\n    hash_head = 0/*NIL*/;\n    if (s.lookahead >= MIN_MATCH) {\n      /*** INSERT_STRING(s, s.strstart, hash_head); ***/\n      s.ins_h = ((s.ins_h << s.hash_shift) ^ s.window[s.strstart + MIN_MATCH - 1]) & s.hash_mask;\n      hash_head = s.prev[s.strstart & s.w_mask] = s.head[s.ins_h];\n      s.head[s.ins_h] = s.strstart;\n      /***/\n    }\n\n    /* Find the longest match, discarding those <= prev_length.\n     * At this point we have always match_length < MIN_MATCH\n     */\n    if (hash_head !== 0/*NIL*/ && ((s.strstart - hash_head) <= (s.w_size - MIN_LOOKAHEAD))) {\n      /* To simplify the code, we prevent matches with the string\n       * of window index 0 (in particular we have to avoid a match\n       * of the string with itself at the start of the input file).\n       */\n      s.match_length = longest_match(s, hash_head);\n      /* longest_match() sets match_start */\n    }\n    if (s.match_length >= MIN_MATCH) {\n      // check_match(s, s.strstart, s.match_start, s.match_length); // for debug only\n\n      /*** _tr_tally_dist(s, s.strstart - s.match_start,\n                     s.match_length - MIN_MATCH, bflush); ***/\n      bflush = trees._tr_tally(s, s.strstart - s.match_start, s.match_length - MIN_MATCH);\n\n      s.lookahead -= s.match_length;\n\n      /* Insert new strings in the hash table only if the match length\n       * is not too large. This saves time but degrades compression.\n       */\n      if (s.match_length <= s.max_lazy_match/*max_insert_length*/ && s.lookahead >= MIN_MATCH) {\n        s.match_length--; /* string at strstart already in table */\n        do {\n          s.strstart++;\n          /*** INSERT_STRING(s, s.strstart, hash_head); ***/\n          s.ins_h = ((s.ins_h << s.hash_shift) ^ s.window[s.strstart + MIN_MATCH - 1]) & s.hash_mask;\n          hash_head = s.prev[s.strstart & s.w_mask] = s.head[s.ins_h];\n          s.head[s.ins_h] = s.strstart;\n          /***/\n          /* strstart never exceeds WSIZE-MAX_MATCH, so there are\n           * always MIN_MATCH bytes ahead.\n           */\n        } while (--s.match_length !== 0);\n        s.strstart++;\n      } else\n      {\n        s.strstart += s.match_length;\n        s.match_length = 0;\n        s.ins_h = s.window[s.strstart];\n        /* UPDATE_HASH(s, s.ins_h, s.window[s.strstart+1]); */\n        s.ins_h = ((s.ins_h << s.hash_shift) ^ s.window[s.strstart + 1]) & s.hash_mask;\n\n//#if MIN_MATCH != 3\n//                Call UPDATE_HASH() MIN_MATCH-3 more times\n//#endif\n        /* If lookahead < MIN_MATCH, ins_h is garbage, but it does not\n         * matter since it will be recomputed at next deflate call.\n         */\n      }\n    } else {\n      /* No match, output a literal byte */\n      //Tracevv((stderr,\"%c\", s.window[s.strstart]));\n      /*** _tr_tally_lit(s, s.window[s.strstart], bflush); ***/\n      bflush = trees._tr_tally(s, 0, s.window[s.strstart]);\n\n      s.lookahead--;\n      s.strstart++;\n    }\n    if (bflush) {\n      /*** FLUSH_BLOCK(s, 0); ***/\n      flush_block_only(s, false);\n      if (s.strm.avail_out === 0) {\n        return BS_NEED_MORE;\n      }\n      /***/\n    }\n  }\n  s.insert = ((s.strstart < (MIN_MATCH - 1)) ? s.strstart : MIN_MATCH - 1);\n  if (flush === Z_FINISH) {\n    /*** FLUSH_BLOCK(s, 1); ***/\n    flush_block_only(s, true);\n    if (s.strm.avail_out === 0) {\n      return BS_FINISH_STARTED;\n    }\n    /***/\n    return BS_FINISH_DONE;\n  }\n  if (s.last_lit) {\n    /*** FLUSH_BLOCK(s, 0); ***/\n    flush_block_only(s, false);\n    if (s.strm.avail_out === 0) {\n      return BS_NEED_MORE;\n    }\n    /***/\n  }\n  return BS_BLOCK_DONE;\n}\n\n/* ===========================================================================\n * Same as above, but achieves better compression. We use a lazy\n * evaluation for matches: a match is finally adopted only if there is\n * no better match at the next window position.\n */\nfunction deflate_slow(s, flush) {\n  var hash_head;          /* head of hash chain */\n  var bflush;              /* set if current block must be flushed */\n\n  var max_insert;\n\n  /* Process the input block. */\n  for (;;) {\n    /* Make sure that we always have enough lookahead, except\n     * at the end of the input file. We need MAX_MATCH bytes\n     * for the next match, plus MIN_MATCH bytes to insert the\n     * string following the next match.\n     */\n    if (s.lookahead < MIN_LOOKAHEAD) {\n      fill_window(s);\n      if (s.lookahead < MIN_LOOKAHEAD && flush === Z_NO_FLUSH) {\n        return BS_NEED_MORE;\n      }\n      if (s.lookahead === 0) { break; } /* flush the current block */\n    }\n\n    /* Insert the string window[strstart .. strstart+2] in the\n     * dictionary, and set hash_head to the head of the hash chain:\n     */\n    hash_head = 0/*NIL*/;\n    if (s.lookahead >= MIN_MATCH) {\n      /*** INSERT_STRING(s, s.strstart, hash_head); ***/\n      s.ins_h = ((s.ins_h << s.hash_shift) ^ s.window[s.strstart + MIN_MATCH - 1]) & s.hash_mask;\n      hash_head = s.prev[s.strstart & s.w_mask] = s.head[s.ins_h];\n      s.head[s.ins_h] = s.strstart;\n      /***/\n    }\n\n    /* Find the longest match, discarding those <= prev_length.\n     */\n    s.prev_length = s.match_length;\n    s.prev_match = s.match_start;\n    s.match_length = MIN_MATCH - 1;\n\n    if (hash_head !== 0/*NIL*/ && s.prev_length < s.max_lazy_match &&\n        s.strstart - hash_head <= (s.w_size - MIN_LOOKAHEAD)/*MAX_DIST(s)*/) {\n      /* To simplify the code, we prevent matches with the string\n       * of window index 0 (in particular we have to avoid a match\n       * of the string with itself at the start of the input file).\n       */\n      s.match_length = longest_match(s, hash_head);\n      /* longest_match() sets match_start */\n\n      if (s.match_length <= 5 &&\n         (s.strategy === Z_FILTERED || (s.match_length === MIN_MATCH && s.strstart - s.match_start > 4096/*TOO_FAR*/))) {\n\n        /* If prev_match is also MIN_MATCH, match_start is garbage\n         * but we will ignore the current match anyway.\n         */\n        s.match_length = MIN_MATCH - 1;\n      }\n    }\n    /* If there was a match at the previous step and the current\n     * match is not better, output the previous match:\n     */\n    if (s.prev_length >= MIN_MATCH && s.match_length <= s.prev_length) {\n      max_insert = s.strstart + s.lookahead - MIN_MATCH;\n      /* Do not insert strings in hash table beyond this. */\n\n      //check_match(s, s.strstart-1, s.prev_match, s.prev_length);\n\n      /***_tr_tally_dist(s, s.strstart - 1 - s.prev_match,\n                     s.prev_length - MIN_MATCH, bflush);***/\n      bflush = trees._tr_tally(s, s.strstart - 1 - s.prev_match, s.prev_length - MIN_MATCH);\n      /* Insert in hash table all strings up to the end of the match.\n       * strstart-1 and strstart are already inserted. If there is not\n       * enough lookahead, the last two strings are not inserted in\n       * the hash table.\n       */\n      s.lookahead -= s.prev_length - 1;\n      s.prev_length -= 2;\n      do {\n        if (++s.strstart <= max_insert) {\n          /*** INSERT_STRING(s, s.strstart, hash_head); ***/\n          s.ins_h = ((s.ins_h << s.hash_shift) ^ s.window[s.strstart + MIN_MATCH - 1]) & s.hash_mask;\n          hash_head = s.prev[s.strstart & s.w_mask] = s.head[s.ins_h];\n          s.head[s.ins_h] = s.strstart;\n          /***/\n        }\n      } while (--s.prev_length !== 0);\n      s.match_available = 0;\n      s.match_length = MIN_MATCH - 1;\n      s.strstart++;\n\n      if (bflush) {\n        /*** FLUSH_BLOCK(s, 0); ***/\n        flush_block_only(s, false);\n        if (s.strm.avail_out === 0) {\n          return BS_NEED_MORE;\n        }\n        /***/\n      }\n\n    } else if (s.match_available) {\n      /* If there was no match at the previous position, output a\n       * single literal. If there was a match but the current match\n       * is longer, truncate the previous match to a single literal.\n       */\n      //Tracevv((stderr,\"%c\", s->window[s->strstart-1]));\n      /*** _tr_tally_lit(s, s.window[s.strstart-1], bflush); ***/\n      bflush = trees._tr_tally(s, 0, s.window[s.strstart - 1]);\n\n      if (bflush) {\n        /*** FLUSH_BLOCK_ONLY(s, 0) ***/\n        flush_block_only(s, false);\n        /***/\n      }\n      s.strstart++;\n      s.lookahead--;\n      if (s.strm.avail_out === 0) {\n        return BS_NEED_MORE;\n      }\n    } else {\n      /* There is no previous match to compare with, wait for\n       * the next step to decide.\n       */\n      s.match_available = 1;\n      s.strstart++;\n      s.lookahead--;\n    }\n  }\n  //Assert (flush != Z_NO_FLUSH, \"no flush?\");\n  if (s.match_available) {\n    //Tracevv((stderr,\"%c\", s->window[s->strstart-1]));\n    /*** _tr_tally_lit(s, s.window[s.strstart-1], bflush); ***/\n    bflush = trees._tr_tally(s, 0, s.window[s.strstart - 1]);\n\n    s.match_available = 0;\n  }\n  s.insert = s.strstart < MIN_MATCH - 1 ? s.strstart : MIN_MATCH - 1;\n  if (flush === Z_FINISH) {\n    /*** FLUSH_BLOCK(s, 1); ***/\n    flush_block_only(s, true);\n    if (s.strm.avail_out === 0) {\n      return BS_FINISH_STARTED;\n    }\n    /***/\n    return BS_FINISH_DONE;\n  }\n  if (s.last_lit) {\n    /*** FLUSH_BLOCK(s, 0); ***/\n    flush_block_only(s, false);\n    if (s.strm.avail_out === 0) {\n      return BS_NEED_MORE;\n    }\n    /***/\n  }\n\n  return BS_BLOCK_DONE;\n}\n\n\n/* ===========================================================================\n * For Z_RLE, simply look for runs of bytes, generate matches only of distance\n * one.  Do not maintain a hash table.  (It will be regenerated if this run of\n * deflate switches away from Z_RLE.)\n */\nfunction deflate_rle(s, flush) {\n  var bflush;            /* set if current block must be flushed */\n  var prev;              /* byte at distance one to match */\n  var scan, strend;      /* scan goes up to strend for length of run */\n\n  var _win = s.window;\n\n  for (;;) {\n    /* Make sure that we always have enough lookahead, except\n     * at the end of the input file. We need MAX_MATCH bytes\n     * for the longest run, plus one for the unrolled loop.\n     */\n    if (s.lookahead <= MAX_MATCH) {\n      fill_window(s);\n      if (s.lookahead <= MAX_MATCH && flush === Z_NO_FLUSH) {\n        return BS_NEED_MORE;\n      }\n      if (s.lookahead === 0) { break; } /* flush the current block */\n    }\n\n    /* See how many times the previous byte repeats */\n    s.match_length = 0;\n    if (s.lookahead >= MIN_MATCH && s.strstart > 0) {\n      scan = s.strstart - 1;\n      prev = _win[scan];\n      if (prev === _win[++scan] && prev === _win[++scan] && prev === _win[++scan]) {\n        strend = s.strstart + MAX_MATCH;\n        do {\n          /*jshint noempty:false*/\n        } while (prev === _win[++scan] && prev === _win[++scan] &&\n                 prev === _win[++scan] && prev === _win[++scan] &&\n                 prev === _win[++scan] && prev === _win[++scan] &&\n                 prev === _win[++scan] && prev === _win[++scan] &&\n                 scan < strend);\n        s.match_length = MAX_MATCH - (strend - scan);\n        if (s.match_length > s.lookahead) {\n          s.match_length = s.lookahead;\n        }\n      }\n      //Assert(scan <= s->window+(uInt)(s->window_size-1), \"wild scan\");\n    }\n\n    /* Emit match if have run of MIN_MATCH or longer, else emit literal */\n    if (s.match_length >= MIN_MATCH) {\n      //check_match(s, s.strstart, s.strstart - 1, s.match_length);\n\n      /*** _tr_tally_dist(s, 1, s.match_length - MIN_MATCH, bflush); ***/\n      bflush = trees._tr_tally(s, 1, s.match_length - MIN_MATCH);\n\n      s.lookahead -= s.match_length;\n      s.strstart += s.match_length;\n      s.match_length = 0;\n    } else {\n      /* No match, output a literal byte */\n      //Tracevv((stderr,\"%c\", s->window[s->strstart]));\n      /*** _tr_tally_lit(s, s.window[s.strstart], bflush); ***/\n      bflush = trees._tr_tally(s, 0, s.window[s.strstart]);\n\n      s.lookahead--;\n      s.strstart++;\n    }\n    if (bflush) {\n      /*** FLUSH_BLOCK(s, 0); ***/\n      flush_block_only(s, false);\n      if (s.strm.avail_out === 0) {\n        return BS_NEED_MORE;\n      }\n      /***/\n    }\n  }\n  s.insert = 0;\n  if (flush === Z_FINISH) {\n    /*** FLUSH_BLOCK(s, 1); ***/\n    flush_block_only(s, true);\n    if (s.strm.avail_out === 0) {\n      return BS_FINISH_STARTED;\n    }\n    /***/\n    return BS_FINISH_DONE;\n  }\n  if (s.last_lit) {\n    /*** FLUSH_BLOCK(s, 0); ***/\n    flush_block_only(s, false);\n    if (s.strm.avail_out === 0) {\n      return BS_NEED_MORE;\n    }\n    /***/\n  }\n  return BS_BLOCK_DONE;\n}\n\n/* ===========================================================================\n * For Z_HUFFMAN_ONLY, do not look for matches.  Do not maintain a hash table.\n * (It will be regenerated if this run of deflate switches away from Huffman.)\n */\nfunction deflate_huff(s, flush) {\n  var bflush;             /* set if current block must be flushed */\n\n  for (;;) {\n    /* Make sure that we have a literal to write. */\n    if (s.lookahead === 0) {\n      fill_window(s);\n      if (s.lookahead === 0) {\n        if (flush === Z_NO_FLUSH) {\n          return BS_NEED_MORE;\n        }\n        break;      /* flush the current block */\n      }\n    }\n\n    /* Output a literal byte */\n    s.match_length = 0;\n    //Tracevv((stderr,\"%c\", s->window[s->strstart]));\n    /*** _tr_tally_lit(s, s.window[s.strstart], bflush); ***/\n    bflush = trees._tr_tally(s, 0, s.window[s.strstart]);\n    s.lookahead--;\n    s.strstart++;\n    if (bflush) {\n      /*** FLUSH_BLOCK(s, 0); ***/\n      flush_block_only(s, false);\n      if (s.strm.avail_out === 0) {\n        return BS_NEED_MORE;\n      }\n      /***/\n    }\n  }\n  s.insert = 0;\n  if (flush === Z_FINISH) {\n    /*** FLUSH_BLOCK(s, 1); ***/\n    flush_block_only(s, true);\n    if (s.strm.avail_out === 0) {\n      return BS_FINISH_STARTED;\n    }\n    /***/\n    return BS_FINISH_DONE;\n  }\n  if (s.last_lit) {\n    /*** FLUSH_BLOCK(s, 0); ***/\n    flush_block_only(s, false);\n    if (s.strm.avail_out === 0) {\n      return BS_NEED_MORE;\n    }\n    /***/\n  }\n  return BS_BLOCK_DONE;\n}\n\n/* Values for max_lazy_match, good_match and max_chain_length, depending on\n * the desired pack level (0..9). The values given below have been tuned to\n * exclude worst case performance for pathological files. Better values may be\n * found for specific files.\n */\nfunction Config(good_length, max_lazy, nice_length, max_chain, func) {\n  this.good_length = good_length;\n  this.max_lazy = max_lazy;\n  this.nice_length = nice_length;\n  this.max_chain = max_chain;\n  this.func = func;\n}\n\nvar configuration_table;\n\nconfiguration_table = [\n  /*      good lazy nice chain */\n  new Config(0, 0, 0, 0, deflate_stored),          /* 0 store only */\n  new Config(4, 4, 8, 4, deflate_fast),            /* 1 max speed, no lazy matches */\n  new Config(4, 5, 16, 8, deflate_fast),           /* 2 */\n  new Config(4, 6, 32, 32, deflate_fast),          /* 3 */\n\n  new Config(4, 4, 16, 16, deflate_slow),          /* 4 lazy matches */\n  new Config(8, 16, 32, 32, deflate_slow),         /* 5 */\n  new Config(8, 16, 128, 128, deflate_slow),       /* 6 */\n  new Config(8, 32, 128, 256, deflate_slow),       /* 7 */\n  new Config(32, 128, 258, 1024, deflate_slow),    /* 8 */\n  new Config(32, 258, 258, 4096, deflate_slow)     /* 9 max compression */\n];\n\n\n/* ===========================================================================\n * Initialize the \"longest match\" routines for a new zlib stream\n */\nfunction lm_init(s) {\n  s.window_size = 2 * s.w_size;\n\n  /*** CLEAR_HASH(s); ***/\n  zero(s.head); // Fill with NIL (= 0);\n\n  /* Set the default configuration parameters:\n   */\n  s.max_lazy_match = configuration_table[s.level].max_lazy;\n  s.good_match = configuration_table[s.level].good_length;\n  s.nice_match = configuration_table[s.level].nice_length;\n  s.max_chain_length = configuration_table[s.level].max_chain;\n\n  s.strstart = 0;\n  s.block_start = 0;\n  s.lookahead = 0;\n  s.insert = 0;\n  s.match_length = s.prev_length = MIN_MATCH - 1;\n  s.match_available = 0;\n  s.ins_h = 0;\n}\n\n\nfunction DeflateState() {\n  this.strm = null;            /* pointer back to this zlib stream */\n  this.status = 0;            /* as the name implies */\n  this.pending_buf = null;      /* output still pending */\n  this.pending_buf_size = 0;  /* size of pending_buf */\n  this.pending_out = 0;       /* next pending byte to output to the stream */\n  this.pending = 0;           /* nb of bytes in the pending buffer */\n  this.wrap = 0;              /* bit 0 true for zlib, bit 1 true for gzip */\n  this.gzhead = null;         /* gzip header information to write */\n  this.gzindex = 0;           /* where in extra, name, or comment */\n  this.method = Z_DEFLATED; /* can only be DEFLATED */\n  this.last_flush = -1;   /* value of flush param for previous deflate call */\n\n  this.w_size = 0;  /* LZ77 window size (32K by default) */\n  this.w_bits = 0;  /* log2(w_size)  (8..16) */\n  this.w_mask = 0;  /* w_size - 1 */\n\n  this.window = null;\n  /* Sliding window. Input bytes are read into the second half of the window,\n   * and move to the first half later to keep a dictionary of at least wSize\n   * bytes. With this organization, matches are limited to a distance of\n   * wSize-MAX_MATCH bytes, but this ensures that IO is always\n   * performed with a length multiple of the block size.\n   */\n\n  this.window_size = 0;\n  /* Actual size of window: 2*wSize, except when the user input buffer\n   * is directly used as sliding window.\n   */\n\n  this.prev = null;\n  /* Link to older string with same hash index. To limit the size of this\n   * array to 64K, this link is maintained only for the last 32K strings.\n   * An index in this array is thus a window index modulo 32K.\n   */\n\n  this.head = null;   /* Heads of the hash chains or NIL. */\n\n  this.ins_h = 0;       /* hash index of string to be inserted */\n  this.hash_size = 0;   /* number of elements in hash table */\n  this.hash_bits = 0;   /* log2(hash_size) */\n  this.hash_mask = 0;   /* hash_size-1 */\n\n  this.hash_shift = 0;\n  /* Number of bits by which ins_h must be shifted at each input\n   * step. It must be such that after MIN_MATCH steps, the oldest\n   * byte no longer takes part in the hash key, that is:\n   *   hash_shift * MIN_MATCH >= hash_bits\n   */\n\n  this.block_start = 0;\n  /* Window position at the beginning of the current output block. Gets\n   * negative when the window is moved backwards.\n   */\n\n  this.match_length = 0;      /* length of best match */\n  this.prev_match = 0;        /* previous match */\n  this.match_available = 0;   /* set if previous match exists */\n  this.strstart = 0;          /* start of string to insert */\n  this.match_start = 0;       /* start of matching string */\n  this.lookahead = 0;         /* number of valid bytes ahead in window */\n\n  this.prev_length = 0;\n  /* Length of the best match at previous step. Matches not greater than this\n   * are discarded. This is used in the lazy match evaluation.\n   */\n\n  this.max_chain_length = 0;\n  /* To speed up deflation, hash chains are never searched beyond this\n   * length.  A higher limit improves compression ratio but degrades the\n   * speed.\n   */\n\n  this.max_lazy_match = 0;\n  /* Attempt to find a better match only when the current match is strictly\n   * smaller than this value. This mechanism is used only for compression\n   * levels >= 4.\n   */\n  // That's alias to max_lazy_match, don't use directly\n  //this.max_insert_length = 0;\n  /* Insert new strings in the hash table only if the match length is not\n   * greater than this length. This saves time but degrades compression.\n   * max_insert_length is used only for compression levels <= 3.\n   */\n\n  this.level = 0;     /* compression level (1..9) */\n  this.strategy = 0;  /* favor or force Huffman coding*/\n\n  this.good_match = 0;\n  /* Use a faster search when the previous match is longer than this */\n\n  this.nice_match = 0; /* Stop searching when current match exceeds this */\n\n              /* used by trees.c: */\n\n  /* Didn't use ct_data typedef below to suppress compiler warning */\n\n  // struct ct_data_s dyn_ltree[HEAP_SIZE];   /* literal and length tree */\n  // struct ct_data_s dyn_dtree[2*D_CODES+1]; /* distance tree */\n  // struct ct_data_s bl_tree[2*BL_CODES+1];  /* Huffman tree for bit lengths */\n\n  // Use flat array of DOUBLE size, with interleaved fata,\n  // because JS does not support effective\n  this.dyn_ltree  = new utils.Buf16(HEAP_SIZE * 2);\n  this.dyn_dtree  = new utils.Buf16((2 * D_CODES + 1) * 2);\n  this.bl_tree    = new utils.Buf16((2 * BL_CODES + 1) * 2);\n  zero(this.dyn_ltree);\n  zero(this.dyn_dtree);\n  zero(this.bl_tree);\n\n  this.l_desc   = null;         /* desc. for literal tree */\n  this.d_desc   = null;         /* desc. for distance tree */\n  this.bl_desc  = null;         /* desc. for bit length tree */\n\n  //ush bl_count[MAX_BITS+1];\n  this.bl_count = new utils.Buf16(MAX_BITS + 1);\n  /* number of codes at each bit length for an optimal tree */\n\n  //int heap[2*L_CODES+1];      /* heap used to build the Huffman trees */\n  this.heap = new utils.Buf16(2 * L_CODES + 1);  /* heap used to build the Huffman trees */\n  zero(this.heap);\n\n  this.heap_len = 0;               /* number of elements in the heap */\n  this.heap_max = 0;               /* element of largest frequency */\n  /* The sons of heap[n] are heap[2*n] and heap[2*n+1]. heap[0] is not used.\n   * The same heap array is used to build all trees.\n   */\n\n  this.depth = new utils.Buf16(2 * L_CODES + 1); //uch depth[2*L_CODES+1];\n  zero(this.depth);\n  /* Depth of each subtree used as tie breaker for trees of equal frequency\n   */\n\n  this.l_buf = 0;          /* buffer index for literals or lengths */\n\n  this.lit_bufsize = 0;\n  /* Size of match buffer for literals/lengths.  There are 4 reasons for\n   * limiting lit_bufsize to 64K:\n   *   - frequencies can be kept in 16 bit counters\n   *   - if compression is not successful for the first block, all input\n   *     data is still in the window so we can still emit a stored block even\n   *     when input comes from standard input.  (This can also be done for\n   *     all blocks if lit_bufsize is not greater than 32K.)\n   *   - if compression is not successful for a file smaller than 64K, we can\n   *     even emit a stored file instead of a stored block (saving 5 bytes).\n   *     This is applicable only for zip (not gzip or zlib).\n   *   - creating new Huffman trees less frequently may not provide fast\n   *     adaptation to changes in the input data statistics. (Take for\n   *     example a binary file with poorly compressible code followed by\n   *     a highly compressible string table.) Smaller buffer sizes give\n   *     fast adaptation but have of course the overhead of transmitting\n   *     trees more frequently.\n   *   - I can't count above 4\n   */\n\n  this.last_lit = 0;      /* running index in l_buf */\n\n  this.d_buf = 0;\n  /* Buffer index for distances. To simplify the code, d_buf and l_buf have\n   * the same number of elements. To use different lengths, an extra flag\n   * array would be necessary.\n   */\n\n  this.opt_len = 0;       /* bit length of current block with optimal trees */\n  this.static_len = 0;    /* bit length of current block with static trees */\n  this.matches = 0;       /* number of string matches in current block */\n  this.insert = 0;        /* bytes at end of window left to insert */\n\n\n  this.bi_buf = 0;\n  /* Output buffer. bits are inserted starting at the bottom (least\n   * significant bits).\n   */\n  this.bi_valid = 0;\n  /* Number of valid bits in bi_buf.  All bits above the last valid bit\n   * are always zero.\n   */\n\n  // Used for window memory init. We safely ignore it for JS. That makes\n  // sense only for pointers and memory check tools.\n  //this.high_water = 0;\n  /* High water mark offset in window for initialized bytes -- bytes above\n   * this are set to zero in order to avoid memory check warnings when\n   * longest match routines access bytes past the input.  This is then\n   * updated to the new high water mark.\n   */\n}\n\n\nfunction deflateResetKeep(strm) {\n  var s;\n\n  if (!strm || !strm.state) {\n    return err(strm, Z_STREAM_ERROR);\n  }\n\n  strm.total_in = strm.total_out = 0;\n  strm.data_type = Z_UNKNOWN;\n\n  s = strm.state;\n  s.pending = 0;\n  s.pending_out = 0;\n\n  if (s.wrap < 0) {\n    s.wrap = -s.wrap;\n    /* was made negative by deflate(..., Z_FINISH); */\n  }\n  s.status = (s.wrap ? INIT_STATE : BUSY_STATE);\n  strm.adler = (s.wrap === 2) ?\n    0  // crc32(0, Z_NULL, 0)\n  :\n    1; // adler32(0, Z_NULL, 0)\n  s.last_flush = Z_NO_FLUSH;\n  trees._tr_init(s);\n  return Z_OK;\n}\n\n\nfunction deflateReset(strm) {\n  var ret = deflateResetKeep(strm);\n  if (ret === Z_OK) {\n    lm_init(strm.state);\n  }\n  return ret;\n}\n\n\nfunction deflateSetHeader(strm, head) {\n  if (!strm || !strm.state) { return Z_STREAM_ERROR; }\n  if (strm.state.wrap !== 2) { return Z_STREAM_ERROR; }\n  strm.state.gzhead = head;\n  return Z_OK;\n}\n\n\nfunction deflateInit2(strm, level, method, windowBits, memLevel, strategy) {\n  if (!strm) { // === Z_NULL\n    return Z_STREAM_ERROR;\n  }\n  var wrap = 1;\n\n  if (level === Z_DEFAULT_COMPRESSION) {\n    level = 6;\n  }\n\n  if (windowBits < 0) { /* suppress zlib wrapper */\n    wrap = 0;\n    windowBits = -windowBits;\n  }\n\n  else if (windowBits > 15) {\n    wrap = 2;           /* write gzip wrapper instead */\n    windowBits -= 16;\n  }\n\n\n  if (memLevel < 1 || memLevel > MAX_MEM_LEVEL || method !== Z_DEFLATED ||\n    windowBits < 8 || windowBits > 15 || level < 0 || level > 9 ||\n    strategy < 0 || strategy > Z_FIXED) {\n    return err(strm, Z_STREAM_ERROR);\n  }\n\n\n  if (windowBits === 8) {\n    windowBits = 9;\n  }\n  /* until 256-byte window bug fixed */\n\n  var s = new DeflateState();\n\n  strm.state = s;\n  s.strm = strm;\n\n  s.wrap = wrap;\n  s.gzhead = null;\n  s.w_bits = windowBits;\n  s.w_size = 1 << s.w_bits;\n  s.w_mask = s.w_size - 1;\n\n  s.hash_bits = memLevel + 7;\n  s.hash_size = 1 << s.hash_bits;\n  s.hash_mask = s.hash_size - 1;\n  s.hash_shift = ~~((s.hash_bits + MIN_MATCH - 1) / MIN_MATCH);\n\n  s.window = new utils.Buf8(s.w_size * 2);\n  s.head = new utils.Buf16(s.hash_size);\n  s.prev = new utils.Buf16(s.w_size);\n\n  // Don't need mem init magic for JS.\n  //s.high_water = 0;  /* nothing written to s->window yet */\n\n  s.lit_bufsize = 1 << (memLevel + 6); /* 16K elements by default */\n\n  s.pending_buf_size = s.lit_bufsize * 4;\n\n  //overlay = (ushf *) ZALLOC(strm, s->lit_bufsize, sizeof(ush)+2);\n  //s->pending_buf = (uchf *) overlay;\n  s.pending_buf = new utils.Buf8(s.pending_buf_size);\n\n  // It is offset from `s.pending_buf` (size is `s.lit_bufsize * 2`)\n  //s->d_buf = overlay + s->lit_bufsize/sizeof(ush);\n  s.d_buf = 1 * s.lit_bufsize;\n\n  //s->l_buf = s->pending_buf + (1+sizeof(ush))*s->lit_bufsize;\n  s.l_buf = (1 + 2) * s.lit_bufsize;\n\n  s.level = level;\n  s.strategy = strategy;\n  s.method = method;\n\n  return deflateReset(strm);\n}\n\nfunction deflateInit(strm, level) {\n  return deflateInit2(strm, level, Z_DEFLATED, MAX_WBITS, DEF_MEM_LEVEL, Z_DEFAULT_STRATEGY);\n}\n\n\nfunction deflate(strm, flush) {\n  var old_flush, s;\n  var beg, val; // for gzip header write only\n\n  if (!strm || !strm.state ||\n    flush > Z_BLOCK || flush < 0) {\n    return strm ? err(strm, Z_STREAM_ERROR) : Z_STREAM_ERROR;\n  }\n\n  s = strm.state;\n\n  if (!strm.output ||\n      (!strm.input && strm.avail_in !== 0) ||\n      (s.status === FINISH_STATE && flush !== Z_FINISH)) {\n    return err(strm, (strm.avail_out === 0) ? Z_BUF_ERROR : Z_STREAM_ERROR);\n  }\n\n  s.strm = strm; /* just in case */\n  old_flush = s.last_flush;\n  s.last_flush = flush;\n\n  /* Write the header */\n  if (s.status === INIT_STATE) {\n\n    if (s.wrap === 2) { // GZIP header\n      strm.adler = 0;  //crc32(0L, Z_NULL, 0);\n      put_byte(s, 31);\n      put_byte(s, 139);\n      put_byte(s, 8);\n      if (!s.gzhead) { // s->gzhead == Z_NULL\n        put_byte(s, 0);\n        put_byte(s, 0);\n        put_byte(s, 0);\n        put_byte(s, 0);\n        put_byte(s, 0);\n        put_byte(s, s.level === 9 ? 2 :\n                    (s.strategy >= Z_HUFFMAN_ONLY || s.level < 2 ?\n                     4 : 0));\n        put_byte(s, OS_CODE);\n        s.status = BUSY_STATE;\n      }\n      else {\n        put_byte(s, (s.gzhead.text ? 1 : 0) +\n                    (s.gzhead.hcrc ? 2 : 0) +\n                    (!s.gzhead.extra ? 0 : 4) +\n                    (!s.gzhead.name ? 0 : 8) +\n                    (!s.gzhead.comment ? 0 : 16)\n                );\n        put_byte(s, s.gzhead.time & 0xff);\n        put_byte(s, (s.gzhead.time >> 8) & 0xff);\n        put_byte(s, (s.gzhead.time >> 16) & 0xff);\n        put_byte(s, (s.gzhead.time >> 24) & 0xff);\n        put_byte(s, s.level === 9 ? 2 :\n                    (s.strategy >= Z_HUFFMAN_ONLY || s.level < 2 ?\n                     4 : 0));\n        put_byte(s, s.gzhead.os & 0xff);\n        if (s.gzhead.extra && s.gzhead.extra.length) {\n          put_byte(s, s.gzhead.extra.length & 0xff);\n          put_byte(s, (s.gzhead.extra.length >> 8) & 0xff);\n        }\n        if (s.gzhead.hcrc) {\n          strm.adler = crc32(strm.adler, s.pending_buf, s.pending, 0);\n        }\n        s.gzindex = 0;\n        s.status = EXTRA_STATE;\n      }\n    }\n    else // DEFLATE header\n    {\n      var header = (Z_DEFLATED + ((s.w_bits - 8) << 4)) << 8;\n      var level_flags = -1;\n\n      if (s.strategy >= Z_HUFFMAN_ONLY || s.level < 2) {\n        level_flags = 0;\n      } else if (s.level < 6) {\n        level_flags = 1;\n      } else if (s.level === 6) {\n        level_flags = 2;\n      } else {\n        level_flags = 3;\n      }\n      header |= (level_flags << 6);\n      if (s.strstart !== 0) { header |= PRESET_DICT; }\n      header += 31 - (header % 31);\n\n      s.status = BUSY_STATE;\n      putShortMSB(s, header);\n\n      /* Save the adler32 of the preset dictionary: */\n      if (s.strstart !== 0) {\n        putShortMSB(s, strm.adler >>> 16);\n        putShortMSB(s, strm.adler & 0xffff);\n      }\n      strm.adler = 1; // adler32(0L, Z_NULL, 0);\n    }\n  }\n\n//#ifdef GZIP\n  if (s.status === EXTRA_STATE) {\n    if (s.gzhead.extra/* != Z_NULL*/) {\n      beg = s.pending;  /* start of bytes to update crc */\n\n      while (s.gzindex < (s.gzhead.extra.length & 0xffff)) {\n        if (s.pending === s.pending_buf_size) {\n          if (s.gzhead.hcrc && s.pending > beg) {\n            strm.adler = crc32(strm.adler, s.pending_buf, s.pending - beg, beg);\n          }\n          flush_pending(strm);\n          beg = s.pending;\n          if (s.pending === s.pending_buf_size) {\n            break;\n          }\n        }\n        put_byte(s, s.gzhead.extra[s.gzindex] & 0xff);\n        s.gzindex++;\n      }\n      if (s.gzhead.hcrc && s.pending > beg) {\n        strm.adler = crc32(strm.adler, s.pending_buf, s.pending - beg, beg);\n      }\n      if (s.gzindex === s.gzhead.extra.length) {\n        s.gzindex = 0;\n        s.status = NAME_STATE;\n      }\n    }\n    else {\n      s.status = NAME_STATE;\n    }\n  }\n  if (s.status === NAME_STATE) {\n    if (s.gzhead.name/* != Z_NULL*/) {\n      beg = s.pending;  /* start of bytes to update crc */\n      //int val;\n\n      do {\n        if (s.pending === s.pending_buf_size) {\n          if (s.gzhead.hcrc && s.pending > beg) {\n            strm.adler = crc32(strm.adler, s.pending_buf, s.pending - beg, beg);\n          }\n          flush_pending(strm);\n          beg = s.pending;\n          if (s.pending === s.pending_buf_size) {\n            val = 1;\n            break;\n          }\n        }\n        // JS specific: little magic to add zero terminator to end of string\n        if (s.gzindex < s.gzhead.name.length) {\n          val = s.gzhead.name.charCodeAt(s.gzindex++) & 0xff;\n        } else {\n          val = 0;\n        }\n        put_byte(s, val);\n      } while (val !== 0);\n\n      if (s.gzhead.hcrc && s.pending > beg) {\n        strm.adler = crc32(strm.adler, s.pending_buf, s.pending - beg, beg);\n      }\n      if (val === 0) {\n        s.gzindex = 0;\n        s.status = COMMENT_STATE;\n      }\n    }\n    else {\n      s.status = COMMENT_STATE;\n    }\n  }\n  if (s.status === COMMENT_STATE) {\n    if (s.gzhead.comment/* != Z_NULL*/) {\n      beg = s.pending;  /* start of bytes to update crc */\n      //int val;\n\n      do {\n        if (s.pending === s.pending_buf_size) {\n          if (s.gzhead.hcrc && s.pending > beg) {\n            strm.adler = crc32(strm.adler, s.pending_buf, s.pending - beg, beg);\n          }\n          flush_pending(strm);\n          beg = s.pending;\n          if (s.pending === s.pending_buf_size) {\n            val = 1;\n            break;\n          }\n        }\n        // JS specific: little magic to add zero terminator to end of string\n        if (s.gzindex < s.gzhead.comment.length) {\n          val = s.gzhead.comment.charCodeAt(s.gzindex++) & 0xff;\n        } else {\n          val = 0;\n        }\n        put_byte(s, val);\n      } while (val !== 0);\n\n      if (s.gzhead.hcrc && s.pending > beg) {\n        strm.adler = crc32(strm.adler, s.pending_buf, s.pending - beg, beg);\n      }\n      if (val === 0) {\n        s.status = HCRC_STATE;\n      }\n    }\n    else {\n      s.status = HCRC_STATE;\n    }\n  }\n  if (s.status === HCRC_STATE) {\n    if (s.gzhead.hcrc) {\n      if (s.pending + 2 > s.pending_buf_size) {\n        flush_pending(strm);\n      }\n      if (s.pending + 2 <= s.pending_buf_size) {\n        put_byte(s, strm.adler & 0xff);\n        put_byte(s, (strm.adler >> 8) & 0xff);\n        strm.adler = 0; //crc32(0L, Z_NULL, 0);\n        s.status = BUSY_STATE;\n      }\n    }\n    else {\n      s.status = BUSY_STATE;\n    }\n  }\n//#endif\n\n  /* Flush as much pending output as possible */\n  if (s.pending !== 0) {\n    flush_pending(strm);\n    if (strm.avail_out === 0) {\n      /* Since avail_out is 0, deflate will be called again with\n       * more output space, but possibly with both pending and\n       * avail_in equal to zero. There won't be anything to do,\n       * but this is not an error situation so make sure we\n       * return OK instead of BUF_ERROR at next call of deflate:\n       */\n      s.last_flush = -1;\n      return Z_OK;\n    }\n\n    /* Make sure there is something to do and avoid duplicate consecutive\n     * flushes. For repeated and useless calls with Z_FINISH, we keep\n     * returning Z_STREAM_END instead of Z_BUF_ERROR.\n     */\n  } else if (strm.avail_in === 0 && rank(flush) <= rank(old_flush) &&\n    flush !== Z_FINISH) {\n    return err(strm, Z_BUF_ERROR);\n  }\n\n  /* User must not provide more input after the first FINISH: */\n  if (s.status === FINISH_STATE && strm.avail_in !== 0) {\n    return err(strm, Z_BUF_ERROR);\n  }\n\n  /* Start a new block or continue the current one.\n   */\n  if (strm.avail_in !== 0 || s.lookahead !== 0 ||\n    (flush !== Z_NO_FLUSH && s.status !== FINISH_STATE)) {\n    var bstate = (s.strategy === Z_HUFFMAN_ONLY) ? deflate_huff(s, flush) :\n      (s.strategy === Z_RLE ? deflate_rle(s, flush) :\n        configuration_table[s.level].func(s, flush));\n\n    if (bstate === BS_FINISH_STARTED || bstate === BS_FINISH_DONE) {\n      s.status = FINISH_STATE;\n    }\n    if (bstate === BS_NEED_MORE || bstate === BS_FINISH_STARTED) {\n      if (strm.avail_out === 0) {\n        s.last_flush = -1;\n        /* avoid BUF_ERROR next call, see above */\n      }\n      return Z_OK;\n      /* If flush != Z_NO_FLUSH && avail_out == 0, the next call\n       * of deflate should use the same flush parameter to make sure\n       * that the flush is complete. So we don't have to output an\n       * empty block here, this will be done at next call. This also\n       * ensures that for a very small output buffer, we emit at most\n       * one empty block.\n       */\n    }\n    if (bstate === BS_BLOCK_DONE) {\n      if (flush === Z_PARTIAL_FLUSH) {\n        trees._tr_align(s);\n      }\n      else if (flush !== Z_BLOCK) { /* FULL_FLUSH or SYNC_FLUSH */\n\n        trees._tr_stored_block(s, 0, 0, false);\n        /* For a full flush, this empty block will be recognized\n         * as a special marker by inflate_sync().\n         */\n        if (flush === Z_FULL_FLUSH) {\n          /*** CLEAR_HASH(s); ***/             /* forget history */\n          zero(s.head); // Fill with NIL (= 0);\n\n          if (s.lookahead === 0) {\n            s.strstart = 0;\n            s.block_start = 0;\n            s.insert = 0;\n          }\n        }\n      }\n      flush_pending(strm);\n      if (strm.avail_out === 0) {\n        s.last_flush = -1; /* avoid BUF_ERROR at next call, see above */\n        return Z_OK;\n      }\n    }\n  }\n  //Assert(strm->avail_out > 0, \"bug2\");\n  //if (strm.avail_out <= 0) { throw new Error(\"bug2\");}\n\n  if (flush !== Z_FINISH) { return Z_OK; }\n  if (s.wrap <= 0) { return Z_STREAM_END; }\n\n  /* Write the trailer */\n  if (s.wrap === 2) {\n    put_byte(s, strm.adler & 0xff);\n    put_byte(s, (strm.adler >> 8) & 0xff);\n    put_byte(s, (strm.adler >> 16) & 0xff);\n    put_byte(s, (strm.adler >> 24) & 0xff);\n    put_byte(s, strm.total_in & 0xff);\n    put_byte(s, (strm.total_in >> 8) & 0xff);\n    put_byte(s, (strm.total_in >> 16) & 0xff);\n    put_byte(s, (strm.total_in >> 24) & 0xff);\n  }\n  else\n  {\n    putShortMSB(s, strm.adler >>> 16);\n    putShortMSB(s, strm.adler & 0xffff);\n  }\n\n  flush_pending(strm);\n  /* If avail_out is zero, the application will call deflate again\n   * to flush the rest.\n   */\n  if (s.wrap > 0) { s.wrap = -s.wrap; }\n  /* write the trailer only once! */\n  return s.pending !== 0 ? Z_OK : Z_STREAM_END;\n}\n\nfunction deflateEnd(strm) {\n  var status;\n\n  if (!strm/*== Z_NULL*/ || !strm.state/*== Z_NULL*/) {\n    return Z_STREAM_ERROR;\n  }\n\n  status = strm.state.status;\n  if (status !== INIT_STATE &&\n    status !== EXTRA_STATE &&\n    status !== NAME_STATE &&\n    status !== COMMENT_STATE &&\n    status !== HCRC_STATE &&\n    status !== BUSY_STATE &&\n    status !== FINISH_STATE\n  ) {\n    return err(strm, Z_STREAM_ERROR);\n  }\n\n  strm.state = null;\n\n  return status === BUSY_STATE ? err(strm, Z_DATA_ERROR) : Z_OK;\n}\n\n\n/* =========================================================================\n * Initializes the compression dictionary from the given byte\n * sequence without producing any compressed output.\n */\nfunction deflateSetDictionary(strm, dictionary) {\n  var dictLength = dictionary.length;\n\n  var s;\n  var str, n;\n  var wrap;\n  var avail;\n  var next;\n  var input;\n  var tmpDict;\n\n  if (!strm/*== Z_NULL*/ || !strm.state/*== Z_NULL*/) {\n    return Z_STREAM_ERROR;\n  }\n\n  s = strm.state;\n  wrap = s.wrap;\n\n  if (wrap === 2 || (wrap === 1 && s.status !== INIT_STATE) || s.lookahead) {\n    return Z_STREAM_ERROR;\n  }\n\n  /* when using zlib wrappers, compute Adler-32 for provided dictionary */\n  if (wrap === 1) {\n    /* adler32(strm->adler, dictionary, dictLength); */\n    strm.adler = adler32(strm.adler, dictionary, dictLength, 0);\n  }\n\n  s.wrap = 0;   /* avoid computing Adler-32 in read_buf */\n\n  /* if dictionary would fill window, just replace the history */\n  if (dictLength >= s.w_size) {\n    if (wrap === 0) {            /* already empty otherwise */\n      /*** CLEAR_HASH(s); ***/\n      zero(s.head); // Fill with NIL (= 0);\n      s.strstart = 0;\n      s.block_start = 0;\n      s.insert = 0;\n    }\n    /* use the tail */\n    // dictionary = dictionary.slice(dictLength - s.w_size);\n    tmpDict = new utils.Buf8(s.w_size);\n    utils.arraySet(tmpDict, dictionary, dictLength - s.w_size, s.w_size, 0);\n    dictionary = tmpDict;\n    dictLength = s.w_size;\n  }\n  /* insert dictionary into window and hash */\n  avail = strm.avail_in;\n  next = strm.next_in;\n  input = strm.input;\n  strm.avail_in = dictLength;\n  strm.next_in = 0;\n  strm.input = dictionary;\n  fill_window(s);\n  while (s.lookahead >= MIN_MATCH) {\n    str = s.strstart;\n    n = s.lookahead - (MIN_MATCH - 1);\n    do {\n      /* UPDATE_HASH(s, s->ins_h, s->window[str + MIN_MATCH-1]); */\n      s.ins_h = ((s.ins_h << s.hash_shift) ^ s.window[str + MIN_MATCH - 1]) & s.hash_mask;\n\n      s.prev[str & s.w_mask] = s.head[s.ins_h];\n\n      s.head[s.ins_h] = str;\n      str++;\n    } while (--n);\n    s.strstart = str;\n    s.lookahead = MIN_MATCH - 1;\n    fill_window(s);\n  }\n  s.strstart += s.lookahead;\n  s.block_start = s.strstart;\n  s.insert = s.lookahead;\n  s.lookahead = 0;\n  s.match_length = s.prev_length = MIN_MATCH - 1;\n  s.match_available = 0;\n  strm.next_in = next;\n  strm.input = input;\n  strm.avail_in = avail;\n  s.wrap = wrap;\n  return Z_OK;\n}\n\n\nexports.deflateInit = deflateInit;\nexports.deflateInit2 = deflateInit2;\nexports.deflateReset = deflateReset;\nexports.deflateResetKeep = deflateResetKeep;\nexports.deflateSetHeader = deflateSetHeader;\nexports.deflate = deflate;\nexports.deflateEnd = deflateEnd;\nexports.deflateSetDictionary = deflateSetDictionary;\nexports.deflateInfo = 'pako deflate (from Nodeca project)';\n\n/* Not implemented\nexports.deflateBound = deflateBound;\nexports.deflateCopy = deflateCopy;\nexports.deflateParams = deflateParams;\nexports.deflatePending = deflatePending;\nexports.deflatePrime = deflatePrime;\nexports.deflateTune = deflateTune;\n*/\n\n},{\"../utils/common\":41,\"./adler32\":43,\"./crc32\":45,\"./messages\":51,\"./trees\":52}],47:[function(require,module,exports){\n'use strict';\n\n// (C) 1995-2013 Jean-loup Gailly and Mark Adler\n// (C) 2014-2017 Vitaly Puzrin and Andrey Tupitsin\n//\n// This software is provided 'as-is', without any express or implied\n// warranty. In no event will the authors be held liable for any damages\n// arising from the use of this software.\n//\n// Permission is granted to anyone to use this software for any purpose,\n// including commercial applications, and to alter it and redistribute it\n// freely, subject to the following restrictions:\n//\n// 1. The origin of this software must not be misrepresented; you must not\n//   claim that you wrote the original software. If you use this software\n//   in a product, an acknowledgment in the product documentation would be\n//   appreciated but is not required.\n// 2. Altered source versions must be plainly marked as such, and must not be\n//   misrepresented as being the original software.\n// 3. This notice may not be removed or altered from any source distribution.\n\nfunction GZheader() {\n  /* true if compressed data believed to be text */\n  this.text       = 0;\n  /* modification time */\n  this.time       = 0;\n  /* extra flags (not used when writing a gzip file) */\n  this.xflags     = 0;\n  /* operating system */\n  this.os         = 0;\n  /* pointer to extra field or Z_NULL if none */\n  this.extra      = null;\n  /* extra field length (valid if extra != Z_NULL) */\n  this.extra_len  = 0; // Actually, we don't need it in JS,\n                       // but leave for few code modifications\n\n  //\n  // Setup limits is not necessary because in js we should not preallocate memory\n  // for inflate use constant limit in 65536 bytes\n  //\n\n  /* space at extra (only when reading header) */\n  // this.extra_max  = 0;\n  /* pointer to zero-terminated file name or Z_NULL */\n  this.name       = '';\n  /* space at name (only when reading header) */\n  // this.name_max   = 0;\n  /* pointer to zero-terminated comment or Z_NULL */\n  this.comment    = '';\n  /* space at comment (only when reading header) */\n  // this.comm_max   = 0;\n  /* true if there was or will be a header crc */\n  this.hcrc       = 0;\n  /* true when done reading gzip header (not used when writing a gzip file) */\n  this.done       = false;\n}\n\nmodule.exports = GZheader;\n\n},{}],48:[function(require,module,exports){\n'use strict';\n\n// (C) 1995-2013 Jean-loup Gailly and Mark Adler\n// (C) 2014-2017 Vitaly Puzrin and Andrey Tupitsin\n//\n// This software is provided 'as-is', without any express or implied\n// warranty. In no event will the authors be held liable for any damages\n// arising from the use of this software.\n//\n// Permission is granted to anyone to use this software for any purpose,\n// including commercial applications, and to alter it and redistribute it\n// freely, subject to the following restrictions:\n//\n// 1. The origin of this software must not be misrepresented; you must not\n//   claim that you wrote the original software. If you use this software\n//   in a product, an acknowledgment in the product documentation would be\n//   appreciated but is not required.\n// 2. Altered source versions must be plainly marked as such, and must not be\n//   misrepresented as being the original software.\n// 3. This notice may not be removed or altered from any source distribution.\n\n// See state defs from inflate.js\nvar BAD = 30;       /* got a data error -- remain here until reset */\nvar TYPE = 12;      /* i: waiting for type bits, including last-flag bit */\n\n/*\n   Decode literal, length, and distance codes and write out the resulting\n   literal and match bytes until either not enough input or output is\n   available, an end-of-block is encountered, or a data error is encountered.\n   When large enough input and output buffers are supplied to inflate(), for\n   example, a 16K input buffer and a 64K output buffer, more than 95% of the\n   inflate execution time is spent in this routine.\n\n   Entry assumptions:\n\n        state.mode === LEN\n        strm.avail_in >= 6\n        strm.avail_out >= 258\n        start >= strm.avail_out\n        state.bits < 8\n\n   On return, state.mode is one of:\n\n        LEN -- ran out of enough output space or enough available input\n        TYPE -- reached end of block code, inflate() to interpret next block\n        BAD -- error in block data\n\n   Notes:\n\n    - The maximum input bits used by a length/distance pair is 15 bits for the\n      length code, 5 bits for the length extra, 15 bits for the distance code,\n      and 13 bits for the distance extra.  This totals 48 bits, or six bytes.\n      Therefore if strm.avail_in >= 6, then there is enough input to avoid\n      checking for available input while decoding.\n\n    - The maximum bytes that a single length/distance pair can output is 258\n      bytes, which is the maximum length that can be coded.  inflate_fast()\n      requires strm.avail_out >= 258 for each loop to avoid checking for\n      output space.\n */\nmodule.exports = function inflate_fast(strm, start) {\n  var state;\n  var _in;                    /* local strm.input */\n  var last;                   /* have enough input while in < last */\n  var _out;                   /* local strm.output */\n  var beg;                    /* inflate()'s initial strm.output */\n  var end;                    /* while out < end, enough space available */\n//#ifdef INFLATE_STRICT\n  var dmax;                   /* maximum distance from zlib header */\n//#endif\n  var wsize;                  /* window size or zero if not using window */\n  var whave;                  /* valid bytes in the window */\n  var wnext;                  /* window write index */\n  // Use `s_window` instead `window`, avoid conflict with instrumentation tools\n  var s_window;               /* allocated sliding window, if wsize != 0 */\n  var hold;                   /* local strm.hold */\n  var bits;                   /* local strm.bits */\n  var lcode;                  /* local strm.lencode */\n  var dcode;                  /* local strm.distcode */\n  var lmask;                  /* mask for first level of length codes */\n  var dmask;                  /* mask for first level of distance codes */\n  var here;                   /* retrieved table entry */\n  var op;                     /* code bits, operation, extra bits, or */\n                              /*  window position, window bytes to copy */\n  var len;                    /* match length, unused bytes */\n  var dist;                   /* match distance */\n  var from;                   /* where to copy match from */\n  var from_source;\n\n\n  var input, output; // JS specific, because we have no pointers\n\n  /* copy state to local variables */\n  state = strm.state;\n  //here = state.here;\n  _in = strm.next_in;\n  input = strm.input;\n  last = _in + (strm.avail_in - 5);\n  _out = strm.next_out;\n  output = strm.output;\n  beg = _out - (start - strm.avail_out);\n  end = _out + (strm.avail_out - 257);\n//#ifdef INFLATE_STRICT\n  dmax = state.dmax;\n//#endif\n  wsize = state.wsize;\n  whave = state.whave;\n  wnext = state.wnext;\n  s_window = state.window;\n  hold = state.hold;\n  bits = state.bits;\n  lcode = state.lencode;\n  dcode = state.distcode;\n  lmask = (1 << state.lenbits) - 1;\n  dmask = (1 << state.distbits) - 1;\n\n\n  /* decode literals and length/distances until end-of-block or not enough\n     input data or output space */\n\n  top:\n  do {\n    if (bits < 15) {\n      hold += input[_in++] << bits;\n      bits += 8;\n      hold += input[_in++] << bits;\n      bits += 8;\n    }\n\n    here = lcode[hold & lmask];\n\n    dolen:\n    for (;;) { // Goto emulation\n      op = here >>> 24/*here.bits*/;\n      hold >>>= op;\n      bits -= op;\n      op = (here >>> 16) & 0xff/*here.op*/;\n      if (op === 0) {                          /* literal */\n        //Tracevv((stderr, here.val >= 0x20 && here.val < 0x7f ?\n        //        \"inflate:         literal '%c'\\n\" :\n        //        \"inflate:         literal 0x%02x\\n\", here.val));\n        output[_out++] = here & 0xffff/*here.val*/;\n      }\n      else if (op & 16) {                     /* length base */\n        len = here & 0xffff/*here.val*/;\n        op &= 15;                           /* number of extra bits */\n        if (op) {\n          if (bits < op) {\n            hold += input[_in++] << bits;\n            bits += 8;\n          }\n          len += hold & ((1 << op) - 1);\n          hold >>>= op;\n          bits -= op;\n        }\n        //Tracevv((stderr, \"inflate:         length %u\\n\", len));\n        if (bits < 15) {\n          hold += input[_in++] << bits;\n          bits += 8;\n          hold += input[_in++] << bits;\n          bits += 8;\n        }\n        here = dcode[hold & dmask];\n\n        dodist:\n        for (;;) { // goto emulation\n          op = here >>> 24/*here.bits*/;\n          hold >>>= op;\n          bits -= op;\n          op = (here >>> 16) & 0xff/*here.op*/;\n\n          if (op & 16) {                      /* distance base */\n            dist = here & 0xffff/*here.val*/;\n            op &= 15;                       /* number of extra bits */\n            if (bits < op) {\n              hold += input[_in++] << bits;\n              bits += 8;\n              if (bits < op) {\n                hold += input[_in++] << bits;\n                bits += 8;\n              }\n            }\n            dist += hold & ((1 << op) - 1);\n//#ifdef INFLATE_STRICT\n            if (dist > dmax) {\n              strm.msg = 'invalid distance too far back';\n              state.mode = BAD;\n              break top;\n            }\n//#endif\n            hold >>>= op;\n            bits -= op;\n            //Tracevv((stderr, \"inflate:         distance %u\\n\", dist));\n            op = _out - beg;                /* max distance in output */\n            if (dist > op) {                /* see if copy from window */\n              op = dist - op;               /* distance back in window */\n              if (op > whave) {\n                if (state.sane) {\n                  strm.msg = 'invalid distance too far back';\n                  state.mode = BAD;\n                  break top;\n                }\n\n// (!) This block is disabled in zlib defailts,\n// don't enable it for binary compatibility\n//#ifdef INFLATE_ALLOW_INVALID_DISTANCE_TOOFAR_ARRR\n//                if (len <= op - whave) {\n//                  do {\n//                    output[_out++] = 0;\n//                  } while (--len);\n//                  continue top;\n//                }\n//                len -= op - whave;\n//                do {\n//                  output[_out++] = 0;\n//                } while (--op > whave);\n//                if (op === 0) {\n//                  from = _out - dist;\n//                  do {\n//                    output[_out++] = output[from++];\n//                  } while (--len);\n//                  continue top;\n//                }\n//#endif\n              }\n              from = 0; // window index\n              from_source = s_window;\n              if (wnext === 0) {           /* very common case */\n                from += wsize - op;\n                if (op < len) {         /* some from window */\n                  len -= op;\n                  do {\n                    output[_out++] = s_window[from++];\n                  } while (--op);\n                  from = _out - dist;  /* rest from output */\n                  from_source = output;\n                }\n              }\n              else if (wnext < op) {      /* wrap around window */\n                from += wsize + wnext - op;\n                op -= wnext;\n                if (op < len) {         /* some from end of window */\n                  len -= op;\n                  do {\n                    output[_out++] = s_window[from++];\n                  } while (--op);\n                  from = 0;\n                  if (wnext < len) {  /* some from start of window */\n                    op = wnext;\n                    len -= op;\n                    do {\n                      output[_out++] = s_window[from++];\n                    } while (--op);\n                    from = _out - dist;      /* rest from output */\n                    from_source = output;\n                  }\n                }\n              }\n              else {                      /* contiguous in window */\n                from += wnext - op;\n                if (op < len) {         /* some from window */\n                  len -= op;\n                  do {\n                    output[_out++] = s_window[from++];\n                  } while (--op);\n                  from = _out - dist;  /* rest from output */\n                  from_source = output;\n                }\n              }\n              while (len > 2) {\n                output[_out++] = from_source[from++];\n                output[_out++] = from_source[from++];\n                output[_out++] = from_source[from++];\n                len -= 3;\n              }\n              if (len) {\n                output[_out++] = from_source[from++];\n                if (len > 1) {\n                  output[_out++] = from_source[from++];\n                }\n              }\n            }\n            else {\n              from = _out - dist;          /* copy direct from output */\n              do {                        /* minimum length is three */\n                output[_out++] = output[from++];\n                output[_out++] = output[from++];\n                output[_out++] = output[from++];\n                len -= 3;\n              } while (len > 2);\n              if (len) {\n                output[_out++] = output[from++];\n                if (len > 1) {\n                  output[_out++] = output[from++];\n                }\n              }\n            }\n          }\n          else if ((op & 64) === 0) {          /* 2nd level distance code */\n            here = dcode[(here & 0xffff)/*here.val*/ + (hold & ((1 << op) - 1))];\n            continue dodist;\n          }\n          else {\n            strm.msg = 'invalid distance code';\n            state.mode = BAD;\n            break top;\n          }\n\n          break; // need to emulate goto via \"continue\"\n        }\n      }\n      else if ((op & 64) === 0) {              /* 2nd level length code */\n        here = lcode[(here & 0xffff)/*here.val*/ + (hold & ((1 << op) - 1))];\n        continue dolen;\n      }\n      else if (op & 32) {                     /* end-of-block */\n        //Tracevv((stderr, \"inflate:         end of block\\n\"));\n        state.mode = TYPE;\n        break top;\n      }\n      else {\n        strm.msg = 'invalid literal/length code';\n        state.mode = BAD;\n        break top;\n      }\n\n      break; // need to emulate goto via \"continue\"\n    }\n  } while (_in < last && _out < end);\n\n  /* return unused bytes (on entry, bits < 8, so in won't go too far back) */\n  len = bits >> 3;\n  _in -= len;\n  bits -= len << 3;\n  hold &= (1 << bits) - 1;\n\n  /* update state and return */\n  strm.next_in = _in;\n  strm.next_out = _out;\n  strm.avail_in = (_in < last ? 5 + (last - _in) : 5 - (_in - last));\n  strm.avail_out = (_out < end ? 257 + (end - _out) : 257 - (_out - end));\n  state.hold = hold;\n  state.bits = bits;\n  return;\n};\n\n},{}],49:[function(require,module,exports){\n'use strict';\n\n// (C) 1995-2013 Jean-loup Gailly and Mark Adler\n// (C) 2014-2017 Vitaly Puzrin and Andrey Tupitsin\n//\n// This software is provided 'as-is', without any express or implied\n// warranty. In no event will the authors be held liable for any damages\n// arising from the use of this software.\n//\n// Permission is granted to anyone to use this software for any purpose,\n// including commercial applications, and to alter it and redistribute it\n// freely, subject to the following restrictions:\n//\n// 1. The origin of this software must not be misrepresented; you must not\n//   claim that you wrote the original software. If you use this software\n//   in a product, an acknowledgment in the product documentation would be\n//   appreciated but is not required.\n// 2. Altered source versions must be plainly marked as such, and must not be\n//   misrepresented as being the original software.\n// 3. This notice may not be removed or altered from any source distribution.\n\nvar utils         = require('../utils/common');\nvar adler32       = require('./adler32');\nvar crc32         = require('./crc32');\nvar inflate_fast  = require('./inffast');\nvar inflate_table = require('./inftrees');\n\nvar CODES = 0;\nvar LENS = 1;\nvar DISTS = 2;\n\n/* Public constants ==========================================================*/\n/* ===========================================================================*/\n\n\n/* Allowed flush values; see deflate() and inflate() below for details */\n//var Z_NO_FLUSH      = 0;\n//var Z_PARTIAL_FLUSH = 1;\n//var Z_SYNC_FLUSH    = 2;\n//var Z_FULL_FLUSH    = 3;\nvar Z_FINISH        = 4;\nvar Z_BLOCK         = 5;\nvar Z_TREES         = 6;\n\n\n/* Return codes for the compression/decompression functions. Negative values\n * are errors, positive values are used for special but normal events.\n */\nvar Z_OK            = 0;\nvar Z_STREAM_END    = 1;\nvar Z_NEED_DICT     = 2;\n//var Z_ERRNO         = -1;\nvar Z_STREAM_ERROR  = -2;\nvar Z_DATA_ERROR    = -3;\nvar Z_MEM_ERROR     = -4;\nvar Z_BUF_ERROR     = -5;\n//var Z_VERSION_ERROR = -6;\n\n/* The deflate compression method */\nvar Z_DEFLATED  = 8;\n\n\n/* STATES ====================================================================*/\n/* ===========================================================================*/\n\n\nvar    HEAD = 1;       /* i: waiting for magic header */\nvar    FLAGS = 2;      /* i: waiting for method and flags (gzip) */\nvar    TIME = 3;       /* i: waiting for modification time (gzip) */\nvar    OS = 4;         /* i: waiting for extra flags and operating system (gzip) */\nvar    EXLEN = 5;      /* i: waiting for extra length (gzip) */\nvar    EXTRA = 6;      /* i: waiting for extra bytes (gzip) */\nvar    NAME = 7;       /* i: waiting for end of file name (gzip) */\nvar    COMMENT = 8;    /* i: waiting for end of comment (gzip) */\nvar    HCRC = 9;       /* i: waiting for header crc (gzip) */\nvar    DICTID = 10;    /* i: waiting for dictionary check value */\nvar    DICT = 11;      /* waiting for inflateSetDictionary() call */\nvar        TYPE = 12;      /* i: waiting for type bits, including last-flag bit */\nvar        TYPEDO = 13;    /* i: same, but skip check to exit inflate on new block */\nvar        STORED = 14;    /* i: waiting for stored size (length and complement) */\nvar        COPY_ = 15;     /* i/o: same as COPY below, but only first time in */\nvar        COPY = 16;      /* i/o: waiting for input or output to copy stored block */\nvar        TABLE = 17;     /* i: waiting for dynamic block table lengths */\nvar        LENLENS = 18;   /* i: waiting for code length code lengths */\nvar        CODELENS = 19;  /* i: waiting for length/lit and distance code lengths */\nvar            LEN_ = 20;      /* i: same as LEN below, but only first time in */\nvar            LEN = 21;       /* i: waiting for length/lit/eob code */\nvar            LENEXT = 22;    /* i: waiting for length extra bits */\nvar            DIST = 23;      /* i: waiting for distance code */\nvar            DISTEXT = 24;   /* i: waiting for distance extra bits */\nvar            MATCH = 25;     /* o: waiting for output space to copy string */\nvar            LIT = 26;       /* o: waiting for output space to write literal */\nvar    CHECK = 27;     /* i: waiting for 32-bit check value */\nvar    LENGTH = 28;    /* i: waiting for 32-bit length (gzip) */\nvar    DONE = 29;      /* finished check, done -- remain here until reset */\nvar    BAD = 30;       /* got a data error -- remain here until reset */\nvar    MEM = 31;       /* got an inflate() memory error -- remain here until reset */\nvar    SYNC = 32;      /* looking for synchronization bytes to restart inflate() */\n\n/* ===========================================================================*/\n\n\n\nvar ENOUGH_LENS = 852;\nvar ENOUGH_DISTS = 592;\n//var ENOUGH =  (ENOUGH_LENS+ENOUGH_DISTS);\n\nvar MAX_WBITS = 15;\n/* 32K LZ77 window */\nvar DEF_WBITS = MAX_WBITS;\n\n\nfunction zswap32(q) {\n  return  (((q >>> 24) & 0xff) +\n          ((q >>> 8) & 0xff00) +\n          ((q & 0xff00) << 8) +\n          ((q & 0xff) << 24));\n}\n\n\nfunction InflateState() {\n  this.mode = 0;             /* current inflate mode */\n  this.last = false;          /* true if processing last block */\n  this.wrap = 0;              /* bit 0 true for zlib, bit 1 true for gzip */\n  this.havedict = false;      /* true if dictionary provided */\n  this.flags = 0;             /* gzip header method and flags (0 if zlib) */\n  this.dmax = 0;              /* zlib header max distance (INFLATE_STRICT) */\n  this.check = 0;             /* protected copy of check value */\n  this.total = 0;             /* protected copy of output count */\n  // TODO: may be {}\n  this.head = null;           /* where to save gzip header information */\n\n  /* sliding window */\n  this.wbits = 0;             /* log base 2 of requested window size */\n  this.wsize = 0;             /* window size or zero if not using window */\n  this.whave = 0;             /* valid bytes in the window */\n  this.wnext = 0;             /* window write index */\n  this.window = null;         /* allocated sliding window, if needed */\n\n  /* bit accumulator */\n  this.hold = 0;              /* input bit accumulator */\n  this.bits = 0;              /* number of bits in \"in\" */\n\n  /* for string and stored block copying */\n  this.length = 0;            /* literal or length of data to copy */\n  this.offset = 0;            /* distance back to copy string from */\n\n  /* for table and code decoding */\n  this.extra = 0;             /* extra bits needed */\n\n  /* fixed and dynamic code tables */\n  this.lencode = null;          /* starting table for length/literal codes */\n  this.distcode = null;         /* starting table for distance codes */\n  this.lenbits = 0;           /* index bits for lencode */\n  this.distbits = 0;          /* index bits for distcode */\n\n  /* dynamic table building */\n  this.ncode = 0;             /* number of code length code lengths */\n  this.nlen = 0;              /* number of length code lengths */\n  this.ndist = 0;             /* number of distance code lengths */\n  this.have = 0;              /* number of code lengths in lens[] */\n  this.next = null;              /* next available space in codes[] */\n\n  this.lens = new utils.Buf16(320); /* temporary storage for code lengths */\n  this.work = new utils.Buf16(288); /* work area for code table building */\n\n  /*\n   because we don't have pointers in js, we use lencode and distcode directly\n   as buffers so we don't need codes\n  */\n  //this.codes = new utils.Buf32(ENOUGH);       /* space for code tables */\n  this.lendyn = null;              /* dynamic table for length/literal codes (JS specific) */\n  this.distdyn = null;             /* dynamic table for distance codes (JS specific) */\n  this.sane = 0;                   /* if false, allow invalid distance too far */\n  this.back = 0;                   /* bits back of last unprocessed length/lit */\n  this.was = 0;                    /* initial length of match */\n}\n\nfunction inflateResetKeep(strm) {\n  var state;\n\n  if (!strm || !strm.state) { return Z_STREAM_ERROR; }\n  state = strm.state;\n  strm.total_in = strm.total_out = state.total = 0;\n  strm.msg = ''; /*Z_NULL*/\n  if (state.wrap) {       /* to support ill-conceived Java test suite */\n    strm.adler = state.wrap & 1;\n  }\n  state.mode = HEAD;\n  state.last = 0;\n  state.havedict = 0;\n  state.dmax = 32768;\n  state.head = null/*Z_NULL*/;\n  state.hold = 0;\n  state.bits = 0;\n  //state.lencode = state.distcode = state.next = state.codes;\n  state.lencode = state.lendyn = new utils.Buf32(ENOUGH_LENS);\n  state.distcode = state.distdyn = new utils.Buf32(ENOUGH_DISTS);\n\n  state.sane = 1;\n  state.back = -1;\n  //Tracev((stderr, \"inflate: reset\\n\"));\n  return Z_OK;\n}\n\nfunction inflateReset(strm) {\n  var state;\n\n  if (!strm || !strm.state) { return Z_STREAM_ERROR; }\n  state = strm.state;\n  state.wsize = 0;\n  state.whave = 0;\n  state.wnext = 0;\n  return inflateResetKeep(strm);\n\n}\n\nfunction inflateReset2(strm, windowBits) {\n  var wrap;\n  var state;\n\n  /* get the state */\n  if (!strm || !strm.state) { return Z_STREAM_ERROR; }\n  state = strm.state;\n\n  /* extract wrap request from windowBits parameter */\n  if (windowBits < 0) {\n    wrap = 0;\n    windowBits = -windowBits;\n  }\n  else {\n    wrap = (windowBits >> 4) + 1;\n    if (windowBits < 48) {\n      windowBits &= 15;\n    }\n  }\n\n  /* set number of window bits, free window if different */\n  if (windowBits && (windowBits < 8 || windowBits > 15)) {\n    return Z_STREAM_ERROR;\n  }\n  if (state.window !== null && state.wbits !== windowBits) {\n    state.window = null;\n  }\n\n  /* update state and reset the rest of it */\n  state.wrap = wrap;\n  state.wbits = windowBits;\n  return inflateReset(strm);\n}\n\nfunction inflateInit2(strm, windowBits) {\n  var ret;\n  var state;\n\n  if (!strm) { return Z_STREAM_ERROR; }\n  //strm.msg = Z_NULL;                 /* in case we return an error */\n\n  state = new InflateState();\n\n  //if (state === Z_NULL) return Z_MEM_ERROR;\n  //Tracev((stderr, \"inflate: allocated\\n\"));\n  strm.state = state;\n  state.window = null/*Z_NULL*/;\n  ret = inflateReset2(strm, windowBits);\n  if (ret !== Z_OK) {\n    strm.state = null/*Z_NULL*/;\n  }\n  return ret;\n}\n\nfunction inflateInit(strm) {\n  return inflateInit2(strm, DEF_WBITS);\n}\n\n\n/*\n Return state with length and distance decoding tables and index sizes set to\n fixed code decoding.  Normally this returns fixed tables from inffixed.h.\n If BUILDFIXED is defined, then instead this routine builds the tables the\n first time it's called, and returns those tables the first time and\n thereafter.  This reduces the size of the code by about 2K bytes, in\n exchange for a little execution time.  However, BUILDFIXED should not be\n used for threaded applications, since the rewriting of the tables and virgin\n may not be thread-safe.\n */\nvar virgin = true;\n\nvar lenfix, distfix; // We have no pointers in JS, so keep tables separate\n\nfunction fixedtables(state) {\n  /* build fixed huffman tables if first call (may not be thread safe) */\n  if (virgin) {\n    var sym;\n\n    lenfix = new utils.Buf32(512);\n    distfix = new utils.Buf32(32);\n\n    /* literal/length table */\n    sym = 0;\n    while (sym < 144) { state.lens[sym++] = 8; }\n    while (sym < 256) { state.lens[sym++] = 9; }\n    while (sym < 280) { state.lens[sym++] = 7; }\n    while (sym < 288) { state.lens[sym++] = 8; }\n\n    inflate_table(LENS,  state.lens, 0, 288, lenfix,   0, state.work, { bits: 9 });\n\n    /* distance table */\n    sym = 0;\n    while (sym < 32) { state.lens[sym++] = 5; }\n\n    inflate_table(DISTS, state.lens, 0, 32,   distfix, 0, state.work, { bits: 5 });\n\n    /* do this just once */\n    virgin = false;\n  }\n\n  state.lencode = lenfix;\n  state.lenbits = 9;\n  state.distcode = distfix;\n  state.distbits = 5;\n}\n\n\n/*\n Update the window with the last wsize (normally 32K) bytes written before\n returning.  If window does not exist yet, create it.  This is only called\n when a window is already in use, or when output has been written during this\n inflate call, but the end of the deflate stream has not been reached yet.\n It is also called to create a window for dictionary data when a dictionary\n is loaded.\n\n Providing output buffers larger than 32K to inflate() should provide a speed\n advantage, since only the last 32K of output is copied to the sliding window\n upon return from inflate(), and since all distances after the first 32K of\n output will fall in the output data, making match copies simpler and faster.\n The advantage may be dependent on the size of the processor's data caches.\n */\nfunction updatewindow(strm, src, end, copy) {\n  var dist;\n  var state = strm.state;\n\n  /* if it hasn't been done already, allocate space for the window */\n  if (state.window === null) {\n    state.wsize = 1 << state.wbits;\n    state.wnext = 0;\n    state.whave = 0;\n\n    state.window = new utils.Buf8(state.wsize);\n  }\n\n  /* copy state->wsize or less output bytes into the circular window */\n  if (copy >= state.wsize) {\n    utils.arraySet(state.window, src, end - state.wsize, state.wsize, 0);\n    state.wnext = 0;\n    state.whave = state.wsize;\n  }\n  else {\n    dist = state.wsize - state.wnext;\n    if (dist > copy) {\n      dist = copy;\n    }\n    //zmemcpy(state->window + state->wnext, end - copy, dist);\n    utils.arraySet(state.window, src, end - copy, dist, state.wnext);\n    copy -= dist;\n    if (copy) {\n      //zmemcpy(state->window, end - copy, copy);\n      utils.arraySet(state.window, src, end - copy, copy, 0);\n      state.wnext = copy;\n      state.whave = state.wsize;\n    }\n    else {\n      state.wnext += dist;\n      if (state.wnext === state.wsize) { state.wnext = 0; }\n      if (state.whave < state.wsize) { state.whave += dist; }\n    }\n  }\n  return 0;\n}\n\nfunction inflate(strm, flush) {\n  var state;\n  var input, output;          // input/output buffers\n  var next;                   /* next input INDEX */\n  var put;                    /* next output INDEX */\n  var have, left;             /* available input and output */\n  var hold;                   /* bit buffer */\n  var bits;                   /* bits in bit buffer */\n  var _in, _out;              /* save starting available input and output */\n  var copy;                   /* number of stored or match bytes to copy */\n  var from;                   /* where to copy match bytes from */\n  var from_source;\n  var here = 0;               /* current decoding table entry */\n  var here_bits, here_op, here_val; // paked \"here\" denormalized (JS specific)\n  //var last;                   /* parent table entry */\n  var last_bits, last_op, last_val; // paked \"last\" denormalized (JS specific)\n  var len;                    /* length to copy for repeats, bits to drop */\n  var ret;                    /* return code */\n  var hbuf = new utils.Buf8(4);    /* buffer for gzip header crc calculation */\n  var opts;\n\n  var n; // temporary var for NEED_BITS\n\n  var order = /* permutation of code lengths */\n    [ 16, 17, 18, 0, 8, 7, 9, 6, 10, 5, 11, 4, 12, 3, 13, 2, 14, 1, 15 ];\n\n\n  if (!strm || !strm.state || !strm.output ||\n      (!strm.input && strm.avail_in !== 0)) {\n    return Z_STREAM_ERROR;\n  }\n\n  state = strm.state;\n  if (state.mode === TYPE) { state.mode = TYPEDO; }    /* skip check */\n\n\n  //--- LOAD() ---\n  put = strm.next_out;\n  output = strm.output;\n  left = strm.avail_out;\n  next = strm.next_in;\n  input = strm.input;\n  have = strm.avail_in;\n  hold = state.hold;\n  bits = state.bits;\n  //---\n\n  _in = have;\n  _out = left;\n  ret = Z_OK;\n\n  inf_leave: // goto emulation\n  for (;;) {\n    switch (state.mode) {\n    case HEAD:\n      if (state.wrap === 0) {\n        state.mode = TYPEDO;\n        break;\n      }\n      //=== NEEDBITS(16);\n      while (bits < 16) {\n        if (have === 0) { break inf_leave; }\n        have--;\n        hold += input[next++] << bits;\n        bits += 8;\n      }\n      //===//\n      if ((state.wrap & 2) && hold === 0x8b1f) {  /* gzip header */\n        state.check = 0/*crc32(0L, Z_NULL, 0)*/;\n        //=== CRC2(state.check, hold);\n        hbuf[0] = hold & 0xff;\n        hbuf[1] = (hold >>> 8) & 0xff;\n        state.check = crc32(state.check, hbuf, 2, 0);\n        //===//\n\n        //=== INITBITS();\n        hold = 0;\n        bits = 0;\n        //===//\n        state.mode = FLAGS;\n        break;\n      }\n      state.flags = 0;           /* expect zlib header */\n      if (state.head) {\n        state.head.done = false;\n      }\n      if (!(state.wrap & 1) ||   /* check if zlib header allowed */\n        (((hold & 0xff)/*BITS(8)*/ << 8) + (hold >> 8)) % 31) {\n        strm.msg = 'incorrect header check';\n        state.mode = BAD;\n        break;\n      }\n      if ((hold & 0x0f)/*BITS(4)*/ !== Z_DEFLATED) {\n        strm.msg = 'unknown compression method';\n        state.mode = BAD;\n        break;\n      }\n      //--- DROPBITS(4) ---//\n      hold >>>= 4;\n      bits -= 4;\n      //---//\n      len = (hold & 0x0f)/*BITS(4)*/ + 8;\n      if (state.wbits === 0) {\n        state.wbits = len;\n      }\n      else if (len > state.wbits) {\n        strm.msg = 'invalid window size';\n        state.mode = BAD;\n        break;\n      }\n      state.dmax = 1 << len;\n      //Tracev((stderr, \"inflate:   zlib header ok\\n\"));\n      strm.adler = state.check = 1/*adler32(0L, Z_NULL, 0)*/;\n      state.mode = hold & 0x200 ? DICTID : TYPE;\n      //=== INITBITS();\n      hold = 0;\n      bits = 0;\n      //===//\n      break;\n    case FLAGS:\n      //=== NEEDBITS(16); */\n      while (bits < 16) {\n        if (have === 0) { break inf_leave; }\n        have--;\n        hold += input[next++] << bits;\n        bits += 8;\n      }\n      //===//\n      state.flags = hold;\n      if ((state.flags & 0xff) !== Z_DEFLATED) {\n        strm.msg = 'unknown compression method';\n        state.mode = BAD;\n        break;\n      }\n      if (state.flags & 0xe000) {\n        strm.msg = 'unknown header flags set';\n        state.mode = BAD;\n        break;\n      }\n      if (state.head) {\n        state.head.text = ((hold >> 8) & 1);\n      }\n      if (state.flags & 0x0200) {\n        //=== CRC2(state.check, hold);\n        hbuf[0] = hold & 0xff;\n        hbuf[1] = (hold >>> 8) & 0xff;\n        state.check = crc32(state.check, hbuf, 2, 0);\n        //===//\n      }\n      //=== INITBITS();\n      hold = 0;\n      bits = 0;\n      //===//\n      state.mode = TIME;\n      /* falls through */\n    case TIME:\n      //=== NEEDBITS(32); */\n      while (bits < 32) {\n        if (have === 0) { break inf_leave; }\n        have--;\n        hold += input[next++] << bits;\n        bits += 8;\n      }\n      //===//\n      if (state.head) {\n        state.head.time = hold;\n      }\n      if (state.flags & 0x0200) {\n        //=== CRC4(state.check, hold)\n        hbuf[0] = hold & 0xff;\n        hbuf[1] = (hold >>> 8) & 0xff;\n        hbuf[2] = (hold >>> 16) & 0xff;\n        hbuf[3] = (hold >>> 24) & 0xff;\n        state.check = crc32(state.check, hbuf, 4, 0);\n        //===\n      }\n      //=== INITBITS();\n      hold = 0;\n      bits = 0;\n      //===//\n      state.mode = OS;\n      /* falls through */\n    case OS:\n      //=== NEEDBITS(16); */\n      while (bits < 16) {\n        if (have === 0) { break inf_leave; }\n        have--;\n        hold += input[next++] << bits;\n        bits += 8;\n      }\n      //===//\n      if (state.head) {\n        state.head.xflags = (hold & 0xff);\n        state.head.os = (hold >> 8);\n      }\n      if (state.flags & 0x0200) {\n        //=== CRC2(state.check, hold);\n        hbuf[0] = hold & 0xff;\n        hbuf[1] = (hold >>> 8) & 0xff;\n        state.check = crc32(state.check, hbuf, 2, 0);\n        //===//\n      }\n      //=== INITBITS();\n      hold = 0;\n      bits = 0;\n      //===//\n      state.mode = EXLEN;\n      /* falls through */\n    case EXLEN:\n      if (state.flags & 0x0400) {\n        //=== NEEDBITS(16); */\n        while (bits < 16) {\n          if (have === 0) { break inf_leave; }\n          have--;\n          hold += input[next++] << bits;\n          bits += 8;\n        }\n        //===//\n        state.length = hold;\n        if (state.head) {\n          state.head.extra_len = hold;\n        }\n        if (state.flags & 0x0200) {\n          //=== CRC2(state.check, hold);\n          hbuf[0] = hold & 0xff;\n          hbuf[1] = (hold >>> 8) & 0xff;\n          state.check = crc32(state.check, hbuf, 2, 0);\n          //===//\n        }\n        //=== INITBITS();\n        hold = 0;\n        bits = 0;\n        //===//\n      }\n      else if (state.head) {\n        state.head.extra = null/*Z_NULL*/;\n      }\n      state.mode = EXTRA;\n      /* falls through */\n    case EXTRA:\n      if (state.flags & 0x0400) {\n        copy = state.length;\n        if (copy > have) { copy = have; }\n        if (copy) {\n          if (state.head) {\n            len = state.head.extra_len - state.length;\n            if (!state.head.extra) {\n              // Use untyped array for more conveniend processing later\n              state.head.extra = new Array(state.head.extra_len);\n            }\n            utils.arraySet(\n              state.head.extra,\n              input,\n              next,\n              // extra field is limited to 65536 bytes\n              // - no need for additional size check\n              copy,\n              /*len + copy > state.head.extra_max - len ? state.head.extra_max : copy,*/\n              len\n            );\n            //zmemcpy(state.head.extra + len, next,\n            //        len + copy > state.head.extra_max ?\n            //        state.head.extra_max - len : copy);\n          }\n          if (state.flags & 0x0200) {\n            state.check = crc32(state.check, input, copy, next);\n          }\n          have -= copy;\n          next += copy;\n          state.length -= copy;\n        }\n        if (state.length) { break inf_leave; }\n      }\n      state.length = 0;\n      state.mode = NAME;\n      /* falls through */\n    case NAME:\n      if (state.flags & 0x0800) {\n        if (have === 0) { break inf_leave; }\n        copy = 0;\n        do {\n          // TODO: 2 or 1 bytes?\n          len = input[next + copy++];\n          /* use constant limit because in js we should not preallocate memory */\n          if (state.head && len &&\n              (state.length < 65536 /*state.head.name_max*/)) {\n            state.head.name += String.fromCharCode(len);\n          }\n        } while (len && copy < have);\n\n        if (state.flags & 0x0200) {\n          state.check = crc32(state.check, input, copy, next);\n        }\n        have -= copy;\n        next += copy;\n        if (len) { break inf_leave; }\n      }\n      else if (state.head) {\n        state.head.name = null;\n      }\n      state.length = 0;\n      state.mode = COMMENT;\n      /* falls through */\n    case COMMENT:\n      if (state.flags & 0x1000) {\n        if (have === 0) { break inf_leave; }\n        copy = 0;\n        do {\n          len = input[next + copy++];\n          /* use constant limit because in js we should not preallocate memory */\n          if (state.head && len &&\n              (state.length < 65536 /*state.head.comm_max*/)) {\n            state.head.comment += String.fromCharCode(len);\n          }\n        } while (len && copy < have);\n        if (state.flags & 0x0200) {\n          state.check = crc32(state.check, input, copy, next);\n        }\n        have -= copy;\n        next += copy;\n        if (len) { break inf_leave; }\n      }\n      else if (state.head) {\n        state.head.comment = null;\n      }\n      state.mode = HCRC;\n      /* falls through */\n    case HCRC:\n      if (state.flags & 0x0200) {\n        //=== NEEDBITS(16); */\n        while (bits < 16) {\n          if (have === 0) { break inf_leave; }\n          have--;\n          hold += input[next++] << bits;\n          bits += 8;\n        }\n        //===//\n        if (hold !== (state.check & 0xffff)) {\n          strm.msg = 'header crc mismatch';\n          state.mode = BAD;\n          break;\n        }\n        //=== INITBITS();\n        hold = 0;\n        bits = 0;\n        //===//\n      }\n      if (state.head) {\n        state.head.hcrc = ((state.flags >> 9) & 1);\n        state.head.done = true;\n      }\n      strm.adler = state.check = 0;\n      state.mode = TYPE;\n      break;\n    case DICTID:\n      //=== NEEDBITS(32); */\n      while (bits < 32) {\n        if (have === 0) { break inf_leave; }\n        have--;\n        hold += input[next++] << bits;\n        bits += 8;\n      }\n      //===//\n      strm.adler = state.check = zswap32(hold);\n      //=== INITBITS();\n      hold = 0;\n      bits = 0;\n      //===//\n      state.mode = DICT;\n      /* falls through */\n    case DICT:\n      if (state.havedict === 0) {\n        //--- RESTORE() ---\n        strm.next_out = put;\n        strm.avail_out = left;\n        strm.next_in = next;\n        strm.avail_in = have;\n        state.hold = hold;\n        state.bits = bits;\n        //---\n        return Z_NEED_DICT;\n      }\n      strm.adler = state.check = 1/*adler32(0L, Z_NULL, 0)*/;\n      state.mode = TYPE;\n      /* falls through */\n    case TYPE:\n      if (flush === Z_BLOCK || flush === Z_TREES) { break inf_leave; }\n      /* falls through */\n    case TYPEDO:\n      if (state.last) {\n        //--- BYTEBITS() ---//\n        hold >>>= bits & 7;\n        bits -= bits & 7;\n        //---//\n        state.mode = CHECK;\n        break;\n      }\n      //=== NEEDBITS(3); */\n      while (bits < 3) {\n        if (have === 0) { break inf_leave; }\n        have--;\n        hold += input[next++] << bits;\n        bits += 8;\n      }\n      //===//\n      state.last = (hold & 0x01)/*BITS(1)*/;\n      //--- DROPBITS(1) ---//\n      hold >>>= 1;\n      bits -= 1;\n      //---//\n\n      switch ((hold & 0x03)/*BITS(2)*/) {\n      case 0:                             /* stored block */\n        //Tracev((stderr, \"inflate:     stored block%s\\n\",\n        //        state.last ? \" (last)\" : \"\"));\n        state.mode = STORED;\n        break;\n      case 1:                             /* fixed block */\n        fixedtables(state);\n        //Tracev((stderr, \"inflate:     fixed codes block%s\\n\",\n        //        state.last ? \" (last)\" : \"\"));\n        state.mode = LEN_;             /* decode codes */\n        if (flush === Z_TREES) {\n          //--- DROPBITS(2) ---//\n          hold >>>= 2;\n          bits -= 2;\n          //---//\n          break inf_leave;\n        }\n        break;\n      case 2:                             /* dynamic block */\n        //Tracev((stderr, \"inflate:     dynamic codes block%s\\n\",\n        //        state.last ? \" (last)\" : \"\"));\n        state.mode = TABLE;\n        break;\n      case 3:\n        strm.msg = 'invalid block type';\n        state.mode = BAD;\n      }\n      //--- DROPBITS(2) ---//\n      hold >>>= 2;\n      bits -= 2;\n      //---//\n      break;\n    case STORED:\n      //--- BYTEBITS() ---// /* go to byte boundary */\n      hold >>>= bits & 7;\n      bits -= bits & 7;\n      //---//\n      //=== NEEDBITS(32); */\n      while (bits < 32) {\n        if (have === 0) { break inf_leave; }\n        have--;\n        hold += input[next++] << bits;\n        bits += 8;\n      }\n      //===//\n      if ((hold & 0xffff) !== ((hold >>> 16) ^ 0xffff)) {\n        strm.msg = 'invalid stored block lengths';\n        state.mode = BAD;\n        break;\n      }\n      state.length = hold & 0xffff;\n      //Tracev((stderr, \"inflate:       stored length %u\\n\",\n      //        state.length));\n      //=== INITBITS();\n      hold = 0;\n      bits = 0;\n      //===//\n      state.mode = COPY_;\n      if (flush === Z_TREES) { break inf_leave; }\n      /* falls through */\n    case COPY_:\n      state.mode = COPY;\n      /* falls through */\n    case COPY:\n      copy = state.length;\n      if (copy) {\n        if (copy > have) { copy = have; }\n        if (copy > left) { copy = left; }\n        if (copy === 0) { break inf_leave; }\n        //--- zmemcpy(put, next, copy); ---\n        utils.arraySet(output, input, next, copy, put);\n        //---//\n        have -= copy;\n        next += copy;\n        left -= copy;\n        put += copy;\n        state.length -= copy;\n        break;\n      }\n      //Tracev((stderr, \"inflate:       stored end\\n\"));\n      state.mode = TYPE;\n      break;\n    case TABLE:\n      //=== NEEDBITS(14); */\n      while (bits < 14) {\n        if (have === 0) { break inf_leave; }\n        have--;\n        hold += input[next++] << bits;\n        bits += 8;\n      }\n      //===//\n      state.nlen = (hold & 0x1f)/*BITS(5)*/ + 257;\n      //--- DROPBITS(5) ---//\n      hold >>>= 5;\n      bits -= 5;\n      //---//\n      state.ndist = (hold & 0x1f)/*BITS(5)*/ + 1;\n      //--- DROPBITS(5) ---//\n      hold >>>= 5;\n      bits -= 5;\n      //---//\n      state.ncode = (hold & 0x0f)/*BITS(4)*/ + 4;\n      //--- DROPBITS(4) ---//\n      hold >>>= 4;\n      bits -= 4;\n      //---//\n//#ifndef PKZIP_BUG_WORKAROUND\n      if (state.nlen > 286 || state.ndist > 30) {\n        strm.msg = 'too many length or distance symbols';\n        state.mode = BAD;\n        break;\n      }\n//#endif\n      //Tracev((stderr, \"inflate:       table sizes ok\\n\"));\n      state.have = 0;\n      state.mode = LENLENS;\n      /* falls through */\n    case LENLENS:\n      while (state.have < state.ncode) {\n        //=== NEEDBITS(3);\n        while (bits < 3) {\n          if (have === 0) { break inf_leave; }\n          have--;\n          hold += input[next++] << bits;\n          bits += 8;\n        }\n        //===//\n        state.lens[order[state.have++]] = (hold & 0x07);//BITS(3);\n        //--- DROPBITS(3) ---//\n        hold >>>= 3;\n        bits -= 3;\n        //---//\n      }\n      while (state.have < 19) {\n        state.lens[order[state.have++]] = 0;\n      }\n      // We have separate tables & no pointers. 2 commented lines below not needed.\n      //state.next = state.codes;\n      //state.lencode = state.next;\n      // Switch to use dynamic table\n      state.lencode = state.lendyn;\n      state.lenbits = 7;\n\n      opts = { bits: state.lenbits };\n      ret = inflate_table(CODES, state.lens, 0, 19, state.lencode, 0, state.work, opts);\n      state.lenbits = opts.bits;\n\n      if (ret) {\n        strm.msg = 'invalid code lengths set';\n        state.mode = BAD;\n        break;\n      }\n      //Tracev((stderr, \"inflate:       code lengths ok\\n\"));\n      state.have = 0;\n      state.mode = CODELENS;\n      /* falls through */\n    case CODELENS:\n      while (state.have < state.nlen + state.ndist) {\n        for (;;) {\n          here = state.lencode[hold & ((1 << state.lenbits) - 1)];/*BITS(state.lenbits)*/\n          here_bits = here >>> 24;\n          here_op = (here >>> 16) & 0xff;\n          here_val = here & 0xffff;\n\n          if ((here_bits) <= bits) { break; }\n          //--- PULLBYTE() ---//\n          if (have === 0) { break inf_leave; }\n          have--;\n          hold += input[next++] << bits;\n          bits += 8;\n          //---//\n        }\n        if (here_val < 16) {\n          //--- DROPBITS(here.bits) ---//\n          hold >>>= here_bits;\n          bits -= here_bits;\n          //---//\n          state.lens[state.have++] = here_val;\n        }\n        else {\n          if (here_val === 16) {\n            //=== NEEDBITS(here.bits + 2);\n            n = here_bits + 2;\n            while (bits < n) {\n              if (have === 0) { break inf_leave; }\n              have--;\n              hold += input[next++] << bits;\n              bits += 8;\n            }\n            //===//\n            //--- DROPBITS(here.bits) ---//\n            hold >>>= here_bits;\n            bits -= here_bits;\n            //---//\n            if (state.have === 0) {\n              strm.msg = 'invalid bit length repeat';\n              state.mode = BAD;\n              break;\n            }\n            len = state.lens[state.have - 1];\n            copy = 3 + (hold & 0x03);//BITS(2);\n            //--- DROPBITS(2) ---//\n            hold >>>= 2;\n            bits -= 2;\n            //---//\n          }\n          else if (here_val === 17) {\n            //=== NEEDBITS(here.bits + 3);\n            n = here_bits + 3;\n            while (bits < n) {\n              if (have === 0) { break inf_leave; }\n              have--;\n              hold += input[next++] << bits;\n              bits += 8;\n            }\n            //===//\n            //--- DROPBITS(here.bits) ---//\n            hold >>>= here_bits;\n            bits -= here_bits;\n            //---//\n            len = 0;\n            copy = 3 + (hold & 0x07);//BITS(3);\n            //--- DROPBITS(3) ---//\n            hold >>>= 3;\n            bits -= 3;\n            //---//\n          }\n          else {\n            //=== NEEDBITS(here.bits + 7);\n            n = here_bits + 7;\n            while (bits < n) {\n              if (have === 0) { break inf_leave; }\n              have--;\n              hold += input[next++] << bits;\n              bits += 8;\n            }\n            //===//\n            //--- DROPBITS(here.bits) ---//\n            hold >>>= here_bits;\n            bits -= here_bits;\n            //---//\n            len = 0;\n            copy = 11 + (hold & 0x7f);//BITS(7);\n            //--- DROPBITS(7) ---//\n            hold >>>= 7;\n            bits -= 7;\n            //---//\n          }\n          if (state.have + copy > state.nlen + state.ndist) {\n            strm.msg = 'invalid bit length repeat';\n            state.mode = BAD;\n            break;\n          }\n          while (copy--) {\n            state.lens[state.have++] = len;\n          }\n        }\n      }\n\n      /* handle error breaks in while */\n      if (state.mode === BAD) { break; }\n\n      /* check for end-of-block code (better have one) */\n      if (state.lens[256] === 0) {\n        strm.msg = 'invalid code -- missing end-of-block';\n        state.mode = BAD;\n        break;\n      }\n\n      /* build code tables -- note: do not change the lenbits or distbits\n         values here (9 and 6) without reading the comments in inftrees.h\n         concerning the ENOUGH constants, which depend on those values */\n      state.lenbits = 9;\n\n      opts = { bits: state.lenbits };\n      ret = inflate_table(LENS, state.lens, 0, state.nlen, state.lencode, 0, state.work, opts);\n      // We have separate tables & no pointers. 2 commented lines below not needed.\n      // state.next_index = opts.table_index;\n      state.lenbits = opts.bits;\n      // state.lencode = state.next;\n\n      if (ret) {\n        strm.msg = 'invalid literal/lengths set';\n        state.mode = BAD;\n        break;\n      }\n\n      state.distbits = 6;\n      //state.distcode.copy(state.codes);\n      // Switch to use dynamic table\n      state.distcode = state.distdyn;\n      opts = { bits: state.distbits };\n      ret = inflate_table(DISTS, state.lens, state.nlen, state.ndist, state.distcode, 0, state.work, opts);\n      // We have separate tables & no pointers. 2 commented lines below not needed.\n      // state.next_index = opts.table_index;\n      state.distbits = opts.bits;\n      // state.distcode = state.next;\n\n      if (ret) {\n        strm.msg = 'invalid distances set';\n        state.mode = BAD;\n        break;\n      }\n      //Tracev((stderr, 'inflate:       codes ok\\n'));\n      state.mode = LEN_;\n      if (flush === Z_TREES) { break inf_leave; }\n      /* falls through */\n    case LEN_:\n      state.mode = LEN;\n      /* falls through */\n    case LEN:\n      if (have >= 6 && left >= 258) {\n        //--- RESTORE() ---\n        strm.next_out = put;\n        strm.avail_out = left;\n        strm.next_in = next;\n        strm.avail_in = have;\n        state.hold = hold;\n        state.bits = bits;\n        //---\n        inflate_fast(strm, _out);\n        //--- LOAD() ---\n        put = strm.next_out;\n        output = strm.output;\n        left = strm.avail_out;\n        next = strm.next_in;\n        input = strm.input;\n        have = strm.avail_in;\n        hold = state.hold;\n        bits = state.bits;\n        //---\n\n        if (state.mode === TYPE) {\n          state.back = -1;\n        }\n        break;\n      }\n      state.back = 0;\n      for (;;) {\n        here = state.lencode[hold & ((1 << state.lenbits) - 1)];  /*BITS(state.lenbits)*/\n        here_bits = here >>> 24;\n        here_op = (here >>> 16) & 0xff;\n        here_val = here & 0xffff;\n\n        if (here_bits <= bits) { break; }\n        //--- PULLBYTE() ---//\n        if (have === 0) { break inf_leave; }\n        have--;\n        hold += input[next++] << bits;\n        bits += 8;\n        //---//\n      }\n      if (here_op && (here_op & 0xf0) === 0) {\n        last_bits = here_bits;\n        last_op = here_op;\n        last_val = here_val;\n        for (;;) {\n          here = state.lencode[last_val +\n                  ((hold & ((1 << (last_bits + last_op)) - 1))/*BITS(last.bits + last.op)*/ >> last_bits)];\n          here_bits = here >>> 24;\n          here_op = (here >>> 16) & 0xff;\n          here_val = here & 0xffff;\n\n          if ((last_bits + here_bits) <= bits) { break; }\n          //--- PULLBYTE() ---//\n          if (have === 0) { break inf_leave; }\n          have--;\n          hold += input[next++] << bits;\n          bits += 8;\n          //---//\n        }\n        //--- DROPBITS(last.bits) ---//\n        hold >>>= last_bits;\n        bits -= last_bits;\n        //---//\n        state.back += last_bits;\n      }\n      //--- DROPBITS(here.bits) ---//\n      hold >>>= here_bits;\n      bits -= here_bits;\n      //---//\n      state.back += here_bits;\n      state.length = here_val;\n      if (here_op === 0) {\n        //Tracevv((stderr, here.val >= 0x20 && here.val < 0x7f ?\n        //        \"inflate:         literal '%c'\\n\" :\n        //        \"inflate:         literal 0x%02x\\n\", here.val));\n        state.mode = LIT;\n        break;\n      }\n      if (here_op & 32) {\n        //Tracevv((stderr, \"inflate:         end of block\\n\"));\n        state.back = -1;\n        state.mode = TYPE;\n        break;\n      }\n      if (here_op & 64) {\n        strm.msg = 'invalid literal/length code';\n        state.mode = BAD;\n        break;\n      }\n      state.extra = here_op & 15;\n      state.mode = LENEXT;\n      /* falls through */\n    case LENEXT:\n      if (state.extra) {\n        //=== NEEDBITS(state.extra);\n        n = state.extra;\n        while (bits < n) {\n          if (have === 0) { break inf_leave; }\n          have--;\n          hold += input[next++] << bits;\n          bits += 8;\n        }\n        //===//\n        state.length += hold & ((1 << state.extra) - 1)/*BITS(state.extra)*/;\n        //--- DROPBITS(state.extra) ---//\n        hold >>>= state.extra;\n        bits -= state.extra;\n        //---//\n        state.back += state.extra;\n      }\n      //Tracevv((stderr, \"inflate:         length %u\\n\", state.length));\n      state.was = state.length;\n      state.mode = DIST;\n      /* falls through */\n    case DIST:\n      for (;;) {\n        here = state.distcode[hold & ((1 << state.distbits) - 1)];/*BITS(state.distbits)*/\n        here_bits = here >>> 24;\n        here_op = (here >>> 16) & 0xff;\n        here_val = here & 0xffff;\n\n        if ((here_bits) <= bits) { break; }\n        //--- PULLBYTE() ---//\n        if (have === 0) { break inf_leave; }\n        have--;\n        hold += input[next++] << bits;\n        bits += 8;\n        //---//\n      }\n      if ((here_op & 0xf0) === 0) {\n        last_bits = here_bits;\n        last_op = here_op;\n        last_val = here_val;\n        for (;;) {\n          here = state.distcode[last_val +\n                  ((hold & ((1 << (last_bits + last_op)) - 1))/*BITS(last.bits + last.op)*/ >> last_bits)];\n          here_bits = here >>> 24;\n          here_op = (here >>> 16) & 0xff;\n          here_val = here & 0xffff;\n\n          if ((last_bits + here_bits) <= bits) { break; }\n          //--- PULLBYTE() ---//\n          if (have === 0) { break inf_leave; }\n          have--;\n          hold += input[next++] << bits;\n          bits += 8;\n          //---//\n        }\n        //--- DROPBITS(last.bits) ---//\n        hold >>>= last_bits;\n        bits -= last_bits;\n        //---//\n        state.back += last_bits;\n      }\n      //--- DROPBITS(here.bits) ---//\n      hold >>>= here_bits;\n      bits -= here_bits;\n      //---//\n      state.back += here_bits;\n      if (here_op & 64) {\n        strm.msg = 'invalid distance code';\n        state.mode = BAD;\n        break;\n      }\n      state.offset = here_val;\n      state.extra = (here_op) & 15;\n      state.mode = DISTEXT;\n      /* falls through */\n    case DISTEXT:\n      if (state.extra) {\n        //=== NEEDBITS(state.extra);\n        n = state.extra;\n        while (bits < n) {\n          if (have === 0) { break inf_leave; }\n          have--;\n          hold += input[next++] << bits;\n          bits += 8;\n        }\n        //===//\n        state.offset += hold & ((1 << state.extra) - 1)/*BITS(state.extra)*/;\n        //--- DROPBITS(state.extra) ---//\n        hold >>>= state.extra;\n        bits -= state.extra;\n        //---//\n        state.back += state.extra;\n      }\n//#ifdef INFLATE_STRICT\n      if (state.offset > state.dmax) {\n        strm.msg = 'invalid distance too far back';\n        state.mode = BAD;\n        break;\n      }\n//#endif\n      //Tracevv((stderr, \"inflate:         distance %u\\n\", state.offset));\n      state.mode = MATCH;\n      /* falls through */\n    case MATCH:\n      if (left === 0) { break inf_leave; }\n      copy = _out - left;\n      if (state.offset > copy) {         /* copy from window */\n        copy = state.offset - copy;\n        if (copy > state.whave) {\n          if (state.sane) {\n            strm.msg = 'invalid distance too far back';\n            state.mode = BAD;\n            break;\n          }\n// (!) This block is disabled in zlib defailts,\n// don't enable it for binary compatibility\n//#ifdef INFLATE_ALLOW_INVALID_DISTANCE_TOOFAR_ARRR\n//          Trace((stderr, \"inflate.c too far\\n\"));\n//          copy -= state.whave;\n//          if (copy > state.length) { copy = state.length; }\n//          if (copy > left) { copy = left; }\n//          left -= copy;\n//          state.length -= copy;\n//          do {\n//            output[put++] = 0;\n//          } while (--copy);\n//          if (state.length === 0) { state.mode = LEN; }\n//          break;\n//#endif\n        }\n        if (copy > state.wnext) {\n          copy -= state.wnext;\n          from = state.wsize - copy;\n        }\n        else {\n          from = state.wnext - copy;\n        }\n        if (copy > state.length) { copy = state.length; }\n        from_source = state.window;\n      }\n      else {                              /* copy from output */\n        from_source = output;\n        from = put - state.offset;\n        copy = state.length;\n      }\n      if (copy > left) { copy = left; }\n      left -= copy;\n      state.length -= copy;\n      do {\n        output[put++] = from_source[from++];\n      } while (--copy);\n      if (state.length === 0) { state.mode = LEN; }\n      break;\n    case LIT:\n      if (left === 0) { break inf_leave; }\n      output[put++] = state.length;\n      left--;\n      state.mode = LEN;\n      break;\n    case CHECK:\n      if (state.wrap) {\n        //=== NEEDBITS(32);\n        while (bits < 32) {\n          if (have === 0) { break inf_leave; }\n          have--;\n          // Use '|' insdead of '+' to make sure that result is signed\n          hold |= input[next++] << bits;\n          bits += 8;\n        }\n        //===//\n        _out -= left;\n        strm.total_out += _out;\n        state.total += _out;\n        if (_out) {\n          strm.adler = state.check =\n              /*UPDATE(state.check, put - _out, _out);*/\n              (state.flags ? crc32(state.check, output, _out, put - _out) : adler32(state.check, output, _out, put - _out));\n\n        }\n        _out = left;\n        // NB: crc32 stored as signed 32-bit int, zswap32 returns signed too\n        if ((state.flags ? hold : zswap32(hold)) !== state.check) {\n          strm.msg = 'incorrect data check';\n          state.mode = BAD;\n          break;\n        }\n        //=== INITBITS();\n        hold = 0;\n        bits = 0;\n        //===//\n        //Tracev((stderr, \"inflate:   check matches trailer\\n\"));\n      }\n      state.mode = LENGTH;\n      /* falls through */\n    case LENGTH:\n      if (state.wrap && state.flags) {\n        //=== NEEDBITS(32);\n        while (bits < 32) {\n          if (have === 0) { break inf_leave; }\n          have--;\n          hold += input[next++] << bits;\n          bits += 8;\n        }\n        //===//\n        if (hold !== (state.total & 0xffffffff)) {\n          strm.msg = 'incorrect length check';\n          state.mode = BAD;\n          break;\n        }\n        //=== INITBITS();\n        hold = 0;\n        bits = 0;\n        //===//\n        //Tracev((stderr, \"inflate:   length matches trailer\\n\"));\n      }\n      state.mode = DONE;\n      /* falls through */\n    case DONE:\n      ret = Z_STREAM_END;\n      break inf_leave;\n    case BAD:\n      ret = Z_DATA_ERROR;\n      break inf_leave;\n    case MEM:\n      return Z_MEM_ERROR;\n    case SYNC:\n      /* falls through */\n    default:\n      return Z_STREAM_ERROR;\n    }\n  }\n\n  // inf_leave <- here is real place for \"goto inf_leave\", emulated via \"break inf_leave\"\n\n  /*\n     Return from inflate(), updating the total counts and the check value.\n     If there was no progress during the inflate() call, return a buffer\n     error.  Call updatewindow() to create and/or update the window state.\n     Note: a memory error from inflate() is non-recoverable.\n   */\n\n  //--- RESTORE() ---\n  strm.next_out = put;\n  strm.avail_out = left;\n  strm.next_in = next;\n  strm.avail_in = have;\n  state.hold = hold;\n  state.bits = bits;\n  //---\n\n  if (state.wsize || (_out !== strm.avail_out && state.mode < BAD &&\n                      (state.mode < CHECK || flush !== Z_FINISH))) {\n    if (updatewindow(strm, strm.output, strm.next_out, _out - strm.avail_out)) {\n      state.mode = MEM;\n      return Z_MEM_ERROR;\n    }\n  }\n  _in -= strm.avail_in;\n  _out -= strm.avail_out;\n  strm.total_in += _in;\n  strm.total_out += _out;\n  state.total += _out;\n  if (state.wrap && _out) {\n    strm.adler = state.check = /*UPDATE(state.check, strm.next_out - _out, _out);*/\n      (state.flags ? crc32(state.check, output, _out, strm.next_out - _out) : adler32(state.check, output, _out, strm.next_out - _out));\n  }\n  strm.data_type = state.bits + (state.last ? 64 : 0) +\n                    (state.mode === TYPE ? 128 : 0) +\n                    (state.mode === LEN_ || state.mode === COPY_ ? 256 : 0);\n  if (((_in === 0 && _out === 0) || flush === Z_FINISH) && ret === Z_OK) {\n    ret = Z_BUF_ERROR;\n  }\n  return ret;\n}\n\nfunction inflateEnd(strm) {\n\n  if (!strm || !strm.state /*|| strm->zfree == (free_func)0*/) {\n    return Z_STREAM_ERROR;\n  }\n\n  var state = strm.state;\n  if (state.window) {\n    state.window = null;\n  }\n  strm.state = null;\n  return Z_OK;\n}\n\nfunction inflateGetHeader(strm, head) {\n  var state;\n\n  /* check state */\n  if (!strm || !strm.state) { return Z_STREAM_ERROR; }\n  state = strm.state;\n  if ((state.wrap & 2) === 0) { return Z_STREAM_ERROR; }\n\n  /* save header structure */\n  state.head = head;\n  head.done = false;\n  return Z_OK;\n}\n\nfunction inflateSetDictionary(strm, dictionary) {\n  var dictLength = dictionary.length;\n\n  var state;\n  var dictid;\n  var ret;\n\n  /* check state */\n  if (!strm /* == Z_NULL */ || !strm.state /* == Z_NULL */) { return Z_STREAM_ERROR; }\n  state = strm.state;\n\n  if (state.wrap !== 0 && state.mode !== DICT) {\n    return Z_STREAM_ERROR;\n  }\n\n  /* check for correct dictionary identifier */\n  if (state.mode === DICT) {\n    dictid = 1; /* adler32(0, null, 0)*/\n    /* dictid = adler32(dictid, dictionary, dictLength); */\n    dictid = adler32(dictid, dictionary, dictLength, 0);\n    if (dictid !== state.check) {\n      return Z_DATA_ERROR;\n    }\n  }\n  /* copy dictionary to window using updatewindow(), which will amend the\n   existing dictionary if appropriate */\n  ret = updatewindow(strm, dictionary, dictLength, dictLength);\n  if (ret) {\n    state.mode = MEM;\n    return Z_MEM_ERROR;\n  }\n  state.havedict = 1;\n  // Tracev((stderr, \"inflate:   dictionary set\\n\"));\n  return Z_OK;\n}\n\nexports.inflateReset = inflateReset;\nexports.inflateReset2 = inflateReset2;\nexports.inflateResetKeep = inflateResetKeep;\nexports.inflateInit = inflateInit;\nexports.inflateInit2 = inflateInit2;\nexports.inflate = inflate;\nexports.inflateEnd = inflateEnd;\nexports.inflateGetHeader = inflateGetHeader;\nexports.inflateSetDictionary = inflateSetDictionary;\nexports.inflateInfo = 'pako inflate (from Nodeca project)';\n\n/* Not implemented\nexports.inflateCopy = inflateCopy;\nexports.inflateGetDictionary = inflateGetDictionary;\nexports.inflateMark = inflateMark;\nexports.inflatePrime = inflatePrime;\nexports.inflateSync = inflateSync;\nexports.inflateSyncPoint = inflateSyncPoint;\nexports.inflateUndermine = inflateUndermine;\n*/\n\n},{\"../utils/common\":41,\"./adler32\":43,\"./crc32\":45,\"./inffast\":48,\"./inftrees\":50}],50:[function(require,module,exports){\n'use strict';\n\n// (C) 1995-2013 Jean-loup Gailly and Mark Adler\n// (C) 2014-2017 Vitaly Puzrin and Andrey Tupitsin\n//\n// This software is provided 'as-is', without any express or implied\n// warranty. In no event will the authors be held liable for any damages\n// arising from the use of this software.\n//\n// Permission is granted to anyone to use this software for any purpose,\n// including commercial applications, and to alter it and redistribute it\n// freely, subject to the following restrictions:\n//\n// 1. The origin of this software must not be misrepresented; you must not\n//   claim that you wrote the original software. If you use this software\n//   in a product, an acknowledgment in the product documentation would be\n//   appreciated but is not required.\n// 2. Altered source versions must be plainly marked as such, and must not be\n//   misrepresented as being the original software.\n// 3. This notice may not be removed or altered from any source distribution.\n\nvar utils = require('../utils/common');\n\nvar MAXBITS = 15;\nvar ENOUGH_LENS = 852;\nvar ENOUGH_DISTS = 592;\n//var ENOUGH = (ENOUGH_LENS+ENOUGH_DISTS);\n\nvar CODES = 0;\nvar LENS = 1;\nvar DISTS = 2;\n\nvar lbase = [ /* Length codes 257..285 base */\n  3, 4, 5, 6, 7, 8, 9, 10, 11, 13, 15, 17, 19, 23, 27, 31,\n  35, 43, 51, 59, 67, 83, 99, 115, 131, 163, 195, 227, 258, 0, 0\n];\n\nvar lext = [ /* Length codes 257..285 extra */\n  16, 16, 16, 16, 16, 16, 16, 16, 17, 17, 17, 17, 18, 18, 18, 18,\n  19, 19, 19, 19, 20, 20, 20, 20, 21, 21, 21, 21, 16, 72, 78\n];\n\nvar dbase = [ /* Distance codes 0..29 base */\n  1, 2, 3, 4, 5, 7, 9, 13, 17, 25, 33, 49, 65, 97, 129, 193,\n  257, 385, 513, 769, 1025, 1537, 2049, 3073, 4097, 6145,\n  8193, 12289, 16385, 24577, 0, 0\n];\n\nvar dext = [ /* Distance codes 0..29 extra */\n  16, 16, 16, 16, 17, 17, 18, 18, 19, 19, 20, 20, 21, 21, 22, 22,\n  23, 23, 24, 24, 25, 25, 26, 26, 27, 27,\n  28, 28, 29, 29, 64, 64\n];\n\nmodule.exports = function inflate_table(type, lens, lens_index, codes, table, table_index, work, opts)\n{\n  var bits = opts.bits;\n      //here = opts.here; /* table entry for duplication */\n\n  var len = 0;               /* a code's length in bits */\n  var sym = 0;               /* index of code symbols */\n  var min = 0, max = 0;          /* minimum and maximum code lengths */\n  var root = 0;              /* number of index bits for root table */\n  var curr = 0;              /* number of index bits for current table */\n  var drop = 0;              /* code bits to drop for sub-table */\n  var left = 0;                   /* number of prefix codes available */\n  var used = 0;              /* code entries in table used */\n  var huff = 0;              /* Huffman code */\n  var incr;              /* for incrementing code, index */\n  var fill;              /* index for replicating entries */\n  var low;               /* low bits for current root entry */\n  var mask;              /* mask for low root bits */\n  var next;             /* next available space in table */\n  var base = null;     /* base value table to use */\n  var base_index = 0;\n//  var shoextra;    /* extra bits table to use */\n  var end;                    /* use base and extra for symbol > end */\n  var count = new utils.Buf16(MAXBITS + 1); //[MAXBITS+1];    /* number of codes of each length */\n  var offs = new utils.Buf16(MAXBITS + 1); //[MAXBITS+1];     /* offsets in table for each length */\n  var extra = null;\n  var extra_index = 0;\n\n  var here_bits, here_op, here_val;\n\n  /*\n   Process a set of code lengths to create a canonical Huffman code.  The\n   code lengths are lens[0..codes-1].  Each length corresponds to the\n   symbols 0..codes-1.  The Huffman code is generated by first sorting the\n   symbols by length from short to long, and retaining the symbol order\n   for codes with equal lengths.  Then the code starts with all zero bits\n   for the first code of the shortest length, and the codes are integer\n   increments for the same length, and zeros are appended as the length\n   increases.  For the deflate format, these bits are stored backwards\n   from their more natural integer increment ordering, and so when the\n   decoding tables are built in the large loop below, the integer codes\n   are incremented backwards.\n\n   This routine assumes, but does not check, that all of the entries in\n   lens[] are in the range 0..MAXBITS.  The caller must assure this.\n   1..MAXBITS is interpreted as that code length.  zero means that that\n   symbol does not occur in this code.\n\n   The codes are sorted by computing a count of codes for each length,\n   creating from that a table of starting indices for each length in the\n   sorted table, and then entering the symbols in order in the sorted\n   table.  The sorted table is work[], with that space being provided by\n   the caller.\n\n   The length counts are used for other purposes as well, i.e. finding\n   the minimum and maximum length codes, determining if there are any\n   codes at all, checking for a valid set of lengths, and looking ahead\n   at length counts to determine sub-table sizes when building the\n   decoding tables.\n   */\n\n  /* accumulate lengths for codes (assumes lens[] all in 0..MAXBITS) */\n  for (len = 0; len <= MAXBITS; len++) {\n    count[len] = 0;\n  }\n  for (sym = 0; sym < codes; sym++) {\n    count[lens[lens_index + sym]]++;\n  }\n\n  /* bound code lengths, force root to be within code lengths */\n  root = bits;\n  for (max = MAXBITS; max >= 1; max--) {\n    if (count[max] !== 0) { break; }\n  }\n  if (root > max) {\n    root = max;\n  }\n  if (max === 0) {                     /* no symbols to code at all */\n    //table.op[opts.table_index] = 64;  //here.op = (var char)64;    /* invalid code marker */\n    //table.bits[opts.table_index] = 1;   //here.bits = (var char)1;\n    //table.val[opts.table_index++] = 0;   //here.val = (var short)0;\n    table[table_index++] = (1 << 24) | (64 << 16) | 0;\n\n\n    //table.op[opts.table_index] = 64;\n    //table.bits[opts.table_index] = 1;\n    //table.val[opts.table_index++] = 0;\n    table[table_index++] = (1 << 24) | (64 << 16) | 0;\n\n    opts.bits = 1;\n    return 0;     /* no symbols, but wait for decoding to report error */\n  }\n  for (min = 1; min < max; min++) {\n    if (count[min] !== 0) { break; }\n  }\n  if (root < min) {\n    root = min;\n  }\n\n  /* check for an over-subscribed or incomplete set of lengths */\n  left = 1;\n  for (len = 1; len <= MAXBITS; len++) {\n    left <<= 1;\n    left -= count[len];\n    if (left < 0) {\n      return -1;\n    }        /* over-subscribed */\n  }\n  if (left > 0 && (type === CODES || max !== 1)) {\n    return -1;                      /* incomplete set */\n  }\n\n  /* generate offsets into symbol table for each length for sorting */\n  offs[1] = 0;\n  for (len = 1; len < MAXBITS; len++) {\n    offs[len + 1] = offs[len] + count[len];\n  }\n\n  /* sort symbols by length, by symbol order within each length */\n  for (sym = 0; sym < codes; sym++) {\n    if (lens[lens_index + sym] !== 0) {\n      work[offs[lens[lens_index + sym]]++] = sym;\n    }\n  }\n\n  /*\n   Create and fill in decoding tables.  In this loop, the table being\n   filled is at next and has curr index bits.  The code being used is huff\n   with length len.  That code is converted to an index by dropping drop\n   bits off of the bottom.  For codes where len is less than drop + curr,\n   those top drop + curr - len bits are incremented through all values to\n   fill the table with replicated entries.\n\n   root is the number of index bits for the root table.  When len exceeds\n   root, sub-tables are created pointed to by the root entry with an index\n   of the low root bits of huff.  This is saved in low to check for when a\n   new sub-table should be started.  drop is zero when the root table is\n   being filled, and drop is root when sub-tables are being filled.\n\n   When a new sub-table is needed, it is necessary to look ahead in the\n   code lengths to determine what size sub-table is needed.  The length\n   counts are used for this, and so count[] is decremented as codes are\n   entered in the tables.\n\n   used keeps track of how many table entries have been allocated from the\n   provided *table space.  It is checked for LENS and DIST tables against\n   the constants ENOUGH_LENS and ENOUGH_DISTS to guard against changes in\n   the initial root table size constants.  See the comments in inftrees.h\n   for more information.\n\n   sym increments through all symbols, and the loop terminates when\n   all codes of length max, i.e. all codes, have been processed.  This\n   routine permits incomplete codes, so another loop after this one fills\n   in the rest of the decoding tables with invalid code markers.\n   */\n\n  /* set up for code type */\n  // poor man optimization - use if-else instead of switch,\n  // to avoid deopts in old v8\n  if (type === CODES) {\n    base = extra = work;    /* dummy value--not used */\n    end = 19;\n\n  } else if (type === LENS) {\n    base = lbase;\n    base_index -= 257;\n    extra = lext;\n    extra_index -= 257;\n    end = 256;\n\n  } else {                    /* DISTS */\n    base = dbase;\n    extra = dext;\n    end = -1;\n  }\n\n  /* initialize opts for loop */\n  huff = 0;                   /* starting code */\n  sym = 0;                    /* starting code symbol */\n  len = min;                  /* starting code length */\n  next = table_index;              /* current table to fill in */\n  curr = root;                /* current table index bits */\n  drop = 0;                   /* current bits to drop from code for index */\n  low = -1;                   /* trigger new sub-table when len > root */\n  used = 1 << root;          /* use root table entries */\n  mask = used - 1;            /* mask for comparing low */\n\n  /* check available table space */\n  if ((type === LENS && used > ENOUGH_LENS) ||\n    (type === DISTS && used > ENOUGH_DISTS)) {\n    return 1;\n  }\n\n  /* process all codes and make table entries */\n  for (;;) {\n    /* create table entry */\n    here_bits = len - drop;\n    if (work[sym] < end) {\n      here_op = 0;\n      here_val = work[sym];\n    }\n    else if (work[sym] > end) {\n      here_op = extra[extra_index + work[sym]];\n      here_val = base[base_index + work[sym]];\n    }\n    else {\n      here_op = 32 + 64;         /* end of block */\n      here_val = 0;\n    }\n\n    /* replicate for those indices with low len bits equal to huff */\n    incr = 1 << (len - drop);\n    fill = 1 << curr;\n    min = fill;                 /* save offset to next table */\n    do {\n      fill -= incr;\n      table[next + (huff >> drop) + fill] = (here_bits << 24) | (here_op << 16) | here_val |0;\n    } while (fill !== 0);\n\n    /* backwards increment the len-bit code huff */\n    incr = 1 << (len - 1);\n    while (huff & incr) {\n      incr >>= 1;\n    }\n    if (incr !== 0) {\n      huff &= incr - 1;\n      huff += incr;\n    } else {\n      huff = 0;\n    }\n\n    /* go to next symbol, update count, len */\n    sym++;\n    if (--count[len] === 0) {\n      if (len === max) { break; }\n      len = lens[lens_index + work[sym]];\n    }\n\n    /* create new sub-table if needed */\n    if (len > root && (huff & mask) !== low) {\n      /* if first time, transition to sub-tables */\n      if (drop === 0) {\n        drop = root;\n      }\n\n      /* increment past last table */\n      next += min;            /* here min is 1 << curr */\n\n      /* determine length of next table */\n      curr = len - drop;\n      left = 1 << curr;\n      while (curr + drop < max) {\n        left -= count[curr + drop];\n        if (left <= 0) { break; }\n        curr++;\n        left <<= 1;\n      }\n\n      /* check for enough space */\n      used += 1 << curr;\n      if ((type === LENS && used > ENOUGH_LENS) ||\n        (type === DISTS && used > ENOUGH_DISTS)) {\n        return 1;\n      }\n\n      /* point entry in root table to sub-table */\n      low = huff & mask;\n      /*table.op[low] = curr;\n      table.bits[low] = root;\n      table.val[low] = next - opts.table_index;*/\n      table[low] = (root << 24) | (curr << 16) | (next - table_index) |0;\n    }\n  }\n\n  /* fill in remaining table entry if code is incomplete (guaranteed to have\n   at most one remaining entry, since if the code is incomplete, the\n   maximum code length that was allowed to get this far is one bit) */\n  if (huff !== 0) {\n    //table.op[next + huff] = 64;            /* invalid code marker */\n    //table.bits[next + huff] = len - drop;\n    //table.val[next + huff] = 0;\n    table[next + huff] = ((len - drop) << 24) | (64 << 16) |0;\n  }\n\n  /* set return parameters */\n  //opts.table_index += used;\n  opts.bits = root;\n  return 0;\n};\n\n},{\"../utils/common\":41}],51:[function(require,module,exports){\n'use strict';\n\n// (C) 1995-2013 Jean-loup Gailly and Mark Adler\n// (C) 2014-2017 Vitaly Puzrin and Andrey Tupitsin\n//\n// This software is provided 'as-is', without any express or implied\n// warranty. In no event will the authors be held liable for any damages\n// arising from the use of this software.\n//\n// Permission is granted to anyone to use this software for any purpose,\n// including commercial applications, and to alter it and redistribute it\n// freely, subject to the following restrictions:\n//\n// 1. The origin of this software must not be misrepresented; you must not\n//   claim that you wrote the original software. If you use this software\n//   in a product, an acknowledgment in the product documentation would be\n//   appreciated but is not required.\n// 2. Altered source versions must be plainly marked as such, and must not be\n//   misrepresented as being the original software.\n// 3. This notice may not be removed or altered from any source distribution.\n\nmodule.exports = {\n  2:      'need dictionary',     /* Z_NEED_DICT       2  */\n  1:      'stream end',          /* Z_STREAM_END      1  */\n  0:      '',                    /* Z_OK              0  */\n  '-1':   'file error',          /* Z_ERRNO         (-1) */\n  '-2':   'stream error',        /* Z_STREAM_ERROR  (-2) */\n  '-3':   'data error',          /* Z_DATA_ERROR    (-3) */\n  '-4':   'insufficient memory', /* Z_MEM_ERROR     (-4) */\n  '-5':   'buffer error',        /* Z_BUF_ERROR     (-5) */\n  '-6':   'incompatible version' /* Z_VERSION_ERROR (-6) */\n};\n\n},{}],52:[function(require,module,exports){\n'use strict';\n\n// (C) 1995-2013 Jean-loup Gailly and Mark Adler\n// (C) 2014-2017 Vitaly Puzrin and Andrey Tupitsin\n//\n// This software is provided 'as-is', without any express or implied\n// warranty. In no event will the authors be held liable for any damages\n// arising from the use of this software.\n//\n// Permission is granted to anyone to use this software for any purpose,\n// including commercial applications, and to alter it and redistribute it\n// freely, subject to the following restrictions:\n//\n// 1. The origin of this software must not be misrepresented; you must not\n//   claim that you wrote the original software. If you use this software\n//   in a product, an acknowledgment in the product documentation would be\n//   appreciated but is not required.\n// 2. Altered source versions must be plainly marked as such, and must not be\n//   misrepresented as being the original software.\n// 3. This notice may not be removed or altered from any source distribution.\n\nvar utils = require('../utils/common');\n\n/* Public constants ==========================================================*/\n/* ===========================================================================*/\n\n\n//var Z_FILTERED          = 1;\n//var Z_HUFFMAN_ONLY      = 2;\n//var Z_RLE               = 3;\nvar Z_FIXED               = 4;\n//var Z_DEFAULT_STRATEGY  = 0;\n\n/* Possible values of the data_type field (though see inflate()) */\nvar Z_BINARY              = 0;\nvar Z_TEXT                = 1;\n//var Z_ASCII             = 1; // = Z_TEXT\nvar Z_UNKNOWN             = 2;\n\n/*============================================================================*/\n\n\nfunction zero(buf) { var len = buf.length; while (--len >= 0) { buf[len] = 0; } }\n\n// From zutil.h\n\nvar STORED_BLOCK = 0;\nvar STATIC_TREES = 1;\nvar DYN_TREES    = 2;\n/* The three kinds of block type */\n\nvar MIN_MATCH    = 3;\nvar MAX_MATCH    = 258;\n/* The minimum and maximum match lengths */\n\n// From deflate.h\n/* ===========================================================================\n * Internal compression state.\n */\n\nvar LENGTH_CODES  = 29;\n/* number of length codes, not counting the special END_BLOCK code */\n\nvar LITERALS      = 256;\n/* number of literal bytes 0..255 */\n\nvar L_CODES       = LITERALS + 1 + LENGTH_CODES;\n/* number of Literal or Length codes, including the END_BLOCK code */\n\nvar D_CODES       = 30;\n/* number of distance codes */\n\nvar BL_CODES      = 19;\n/* number of codes used to transfer the bit lengths */\n\nvar HEAP_SIZE     = 2 * L_CODES + 1;\n/* maximum heap size */\n\nvar MAX_BITS      = 15;\n/* All codes must not exceed MAX_BITS bits */\n\nvar Buf_size      = 16;\n/* size of bit buffer in bi_buf */\n\n\n/* ===========================================================================\n * Constants\n */\n\nvar MAX_BL_BITS = 7;\n/* Bit length codes must not exceed MAX_BL_BITS bits */\n\nvar END_BLOCK   = 256;\n/* end of block literal code */\n\nvar REP_3_6     = 16;\n/* repeat previous bit length 3-6 times (2 bits of repeat count) */\n\nvar REPZ_3_10   = 17;\n/* repeat a zero length 3-10 times  (3 bits of repeat count) */\n\nvar REPZ_11_138 = 18;\n/* repeat a zero length 11-138 times  (7 bits of repeat count) */\n\n/* eslint-disable comma-spacing,array-bracket-spacing */\nvar extra_lbits =   /* extra bits for each length code */\n  [0,0,0,0,0,0,0,0,1,1,1,1,2,2,2,2,3,3,3,3,4,4,4,4,5,5,5,5,0];\n\nvar extra_dbits =   /* extra bits for each distance code */\n  [0,0,0,0,1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,11,11,12,12,13,13];\n\nvar extra_blbits =  /* extra bits for each bit length code */\n  [0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,2,3,7];\n\nvar bl_order =\n  [16,17,18,0,8,7,9,6,10,5,11,4,12,3,13,2,14,1,15];\n/* eslint-enable comma-spacing,array-bracket-spacing */\n\n/* The lengths of the bit length codes are sent in order of decreasing\n * probability, to avoid transmitting the lengths for unused bit length codes.\n */\n\n/* ===========================================================================\n * Local data. These are initialized only once.\n */\n\n// We pre-fill arrays with 0 to avoid uninitialized gaps\n\nvar DIST_CODE_LEN = 512; /* see definition of array dist_code below */\n\n// !!!! Use flat array insdead of structure, Freq = i*2, Len = i*2+1\nvar static_ltree  = new Array((L_CODES + 2) * 2);\nzero(static_ltree);\n/* The static literal tree. Since the bit lengths are imposed, there is no\n * need for the L_CODES extra codes used during heap construction. However\n * The codes 286 and 287 are needed to build a canonical tree (see _tr_init\n * below).\n */\n\nvar static_dtree  = new Array(D_CODES * 2);\nzero(static_dtree);\n/* The static distance tree. (Actually a trivial tree since all codes use\n * 5 bits.)\n */\n\nvar _dist_code    = new Array(DIST_CODE_LEN);\nzero(_dist_code);\n/* Distance codes. The first 256 values correspond to the distances\n * 3 .. 258, the last 256 values correspond to the top 8 bits of\n * the 15 bit distances.\n */\n\nvar _length_code  = new Array(MAX_MATCH - MIN_MATCH + 1);\nzero(_length_code);\n/* length code for each normalized match length (0 == MIN_MATCH) */\n\nvar base_length   = new Array(LENGTH_CODES);\nzero(base_length);\n/* First normalized length for each code (0 = MIN_MATCH) */\n\nvar base_dist     = new Array(D_CODES);\nzero(base_dist);\n/* First normalized distance for each code (0 = distance of 1) */\n\n\nfunction StaticTreeDesc(static_tree, extra_bits, extra_base, elems, max_length) {\n\n  this.static_tree  = static_tree;  /* static tree or NULL */\n  this.extra_bits   = extra_bits;   /* extra bits for each code or NULL */\n  this.extra_base   = extra_base;   /* base index for extra_bits */\n  this.elems        = elems;        /* max number of elements in the tree */\n  this.max_length   = max_length;   /* max bit length for the codes */\n\n  // show if `static_tree` has data or dummy - needed for monomorphic objects\n  this.has_stree    = static_tree && static_tree.length;\n}\n\n\nvar static_l_desc;\nvar static_d_desc;\nvar static_bl_desc;\n\n\nfunction TreeDesc(dyn_tree, stat_desc) {\n  this.dyn_tree = dyn_tree;     /* the dynamic tree */\n  this.max_code = 0;            /* largest code with non zero frequency */\n  this.stat_desc = stat_desc;   /* the corresponding static tree */\n}\n\n\n\nfunction d_code(dist) {\n  return dist < 256 ? _dist_code[dist] : _dist_code[256 + (dist >>> 7)];\n}\n\n\n/* ===========================================================================\n * Output a short LSB first on the stream.\n * IN assertion: there is enough room in pendingBuf.\n */\nfunction put_short(s, w) {\n//    put_byte(s, (uch)((w) & 0xff));\n//    put_byte(s, (uch)((ush)(w) >> 8));\n  s.pending_buf[s.pending++] = (w) & 0xff;\n  s.pending_buf[s.pending++] = (w >>> 8) & 0xff;\n}\n\n\n/* ===========================================================================\n * Send a value on a given number of bits.\n * IN assertion: length <= 16 and value fits in length bits.\n */\nfunction send_bits(s, value, length) {\n  if (s.bi_valid > (Buf_size - length)) {\n    s.bi_buf |= (value << s.bi_valid) & 0xffff;\n    put_short(s, s.bi_buf);\n    s.bi_buf = value >> (Buf_size - s.bi_valid);\n    s.bi_valid += length - Buf_size;\n  } else {\n    s.bi_buf |= (value << s.bi_valid) & 0xffff;\n    s.bi_valid += length;\n  }\n}\n\n\nfunction send_code(s, c, tree) {\n  send_bits(s, tree[c * 2]/*.Code*/, tree[c * 2 + 1]/*.Len*/);\n}\n\n\n/* ===========================================================================\n * Reverse the first len bits of a code, using straightforward code (a faster\n * method would use a table)\n * IN assertion: 1 <= len <= 15\n */\nfunction bi_reverse(code, len) {\n  var res = 0;\n  do {\n    res |= code & 1;\n    code >>>= 1;\n    res <<= 1;\n  } while (--len > 0);\n  return res >>> 1;\n}\n\n\n/* ===========================================================================\n * Flush the bit buffer, keeping at most 7 bits in it.\n */\nfunction bi_flush(s) {\n  if (s.bi_valid === 16) {\n    put_short(s, s.bi_buf);\n    s.bi_buf = 0;\n    s.bi_valid = 0;\n\n  } else if (s.bi_valid >= 8) {\n    s.pending_buf[s.pending++] = s.bi_buf & 0xff;\n    s.bi_buf >>= 8;\n    s.bi_valid -= 8;\n  }\n}\n\n\n/* ===========================================================================\n * Compute the optimal bit lengths for a tree and update the total bit length\n * for the current block.\n * IN assertion: the fields freq and dad are set, heap[heap_max] and\n *    above are the tree nodes sorted by increasing frequency.\n * OUT assertions: the field len is set to the optimal bit length, the\n *     array bl_count contains the frequencies for each bit length.\n *     The length opt_len is updated; static_len is also updated if stree is\n *     not null.\n */\nfunction gen_bitlen(s, desc)\n//    deflate_state *s;\n//    tree_desc *desc;    /* the tree descriptor */\n{\n  var tree            = desc.dyn_tree;\n  var max_code        = desc.max_code;\n  var stree           = desc.stat_desc.static_tree;\n  var has_stree       = desc.stat_desc.has_stree;\n  var extra           = desc.stat_desc.extra_bits;\n  var base            = desc.stat_desc.extra_base;\n  var max_length      = desc.stat_desc.max_length;\n  var h;              /* heap index */\n  var n, m;           /* iterate over the tree elements */\n  var bits;           /* bit length */\n  var xbits;          /* extra bits */\n  var f;              /* frequency */\n  var overflow = 0;   /* number of elements with bit length too large */\n\n  for (bits = 0; bits <= MAX_BITS; bits++) {\n    s.bl_count[bits] = 0;\n  }\n\n  /* In a first pass, compute the optimal bit lengths (which may\n   * overflow in the case of the bit length tree).\n   */\n  tree[s.heap[s.heap_max] * 2 + 1]/*.Len*/ = 0; /* root of the heap */\n\n  for (h = s.heap_max + 1; h < HEAP_SIZE; h++) {\n    n = s.heap[h];\n    bits = tree[tree[n * 2 + 1]/*.Dad*/ * 2 + 1]/*.Len*/ + 1;\n    if (bits > max_length) {\n      bits = max_length;\n      overflow++;\n    }\n    tree[n * 2 + 1]/*.Len*/ = bits;\n    /* We overwrite tree[n].Dad which is no longer needed */\n\n    if (n > max_code) { continue; } /* not a leaf node */\n\n    s.bl_count[bits]++;\n    xbits = 0;\n    if (n >= base) {\n      xbits = extra[n - base];\n    }\n    f = tree[n * 2]/*.Freq*/;\n    s.opt_len += f * (bits + xbits);\n    if (has_stree) {\n      s.static_len += f * (stree[n * 2 + 1]/*.Len*/ + xbits);\n    }\n  }\n  if (overflow === 0) { return; }\n\n  // Trace((stderr,\"\\nbit length overflow\\n\"));\n  /* This happens for example on obj2 and pic of the Calgary corpus */\n\n  /* Find the first bit length which could increase: */\n  do {\n    bits = max_length - 1;\n    while (s.bl_count[bits] === 0) { bits--; }\n    s.bl_count[bits]--;      /* move one leaf down the tree */\n    s.bl_count[bits + 1] += 2; /* move one overflow item as its brother */\n    s.bl_count[max_length]--;\n    /* The brother of the overflow item also moves one step up,\n     * but this does not affect bl_count[max_length]\n     */\n    overflow -= 2;\n  } while (overflow > 0);\n\n  /* Now recompute all bit lengths, scanning in increasing frequency.\n   * h is still equal to HEAP_SIZE. (It is simpler to reconstruct all\n   * lengths instead of fixing only the wrong ones. This idea is taken\n   * from 'ar' written by Haruhiko Okumura.)\n   */\n  for (bits = max_length; bits !== 0; bits--) {\n    n = s.bl_count[bits];\n    while (n !== 0) {\n      m = s.heap[--h];\n      if (m > max_code) { continue; }\n      if (tree[m * 2 + 1]/*.Len*/ !== bits) {\n        // Trace((stderr,\"code %d bits %d->%d\\n\", m, tree[m].Len, bits));\n        s.opt_len += (bits - tree[m * 2 + 1]/*.Len*/) * tree[m * 2]/*.Freq*/;\n        tree[m * 2 + 1]/*.Len*/ = bits;\n      }\n      n--;\n    }\n  }\n}\n\n\n/* ===========================================================================\n * Generate the codes for a given tree and bit counts (which need not be\n * optimal).\n * IN assertion: the array bl_count contains the bit length statistics for\n * the given tree and the field len is set for all tree elements.\n * OUT assertion: the field code is set for all tree elements of non\n *     zero code length.\n */\nfunction gen_codes(tree, max_code, bl_count)\n//    ct_data *tree;             /* the tree to decorate */\n//    int max_code;              /* largest code with non zero frequency */\n//    ushf *bl_count;            /* number of codes at each bit length */\n{\n  var next_code = new Array(MAX_BITS + 1); /* next code value for each bit length */\n  var code = 0;              /* running code value */\n  var bits;                  /* bit index */\n  var n;                     /* code index */\n\n  /* The distribution counts are first used to generate the code values\n   * without bit reversal.\n   */\n  for (bits = 1; bits <= MAX_BITS; bits++) {\n    next_code[bits] = code = (code + bl_count[bits - 1]) << 1;\n  }\n  /* Check that the bit counts in bl_count are consistent. The last code\n   * must be all ones.\n   */\n  //Assert (code + bl_count[MAX_BITS]-1 == (1<<MAX_BITS)-1,\n  //        \"inconsistent bit counts\");\n  //Tracev((stderr,\"\\ngen_codes: max_code %d \", max_code));\n\n  for (n = 0;  n <= max_code; n++) {\n    var len = tree[n * 2 + 1]/*.Len*/;\n    if (len === 0) { continue; }\n    /* Now reverse the bits */\n    tree[n * 2]/*.Code*/ = bi_reverse(next_code[len]++, len);\n\n    //Tracecv(tree != static_ltree, (stderr,\"\\nn %3d %c l %2d c %4x (%x) \",\n    //     n, (isgraph(n) ? n : ' '), len, tree[n].Code, next_code[len]-1));\n  }\n}\n\n\n/* ===========================================================================\n * Initialize the various 'constant' tables.\n */\nfunction tr_static_init() {\n  var n;        /* iterates over tree elements */\n  var bits;     /* bit counter */\n  var length;   /* length value */\n  var code;     /* code value */\n  var dist;     /* distance index */\n  var bl_count = new Array(MAX_BITS + 1);\n  /* number of codes at each bit length for an optimal tree */\n\n  // do check in _tr_init()\n  //if (static_init_done) return;\n\n  /* For some embedded targets, global variables are not initialized: */\n/*#ifdef NO_INIT_GLOBAL_POINTERS\n  static_l_desc.static_tree = static_ltree;\n  static_l_desc.extra_bits = extra_lbits;\n  static_d_desc.static_tree = static_dtree;\n  static_d_desc.extra_bits = extra_dbits;\n  static_bl_desc.extra_bits = extra_blbits;\n#endif*/\n\n  /* Initialize the mapping length (0..255) -> length code (0..28) */\n  length = 0;\n  for (code = 0; code < LENGTH_CODES - 1; code++) {\n    base_length[code] = length;\n    for (n = 0; n < (1 << extra_lbits[code]); n++) {\n      _length_code[length++] = code;\n    }\n  }\n  //Assert (length == 256, \"tr_static_init: length != 256\");\n  /* Note that the length 255 (match length 258) can be represented\n   * in two different ways: code 284 + 5 bits or code 285, so we\n   * overwrite length_code[255] to use the best encoding:\n   */\n  _length_code[length - 1] = code;\n\n  /* Initialize the mapping dist (0..32K) -> dist code (0..29) */\n  dist = 0;\n  for (code = 0; code < 16; code++) {\n    base_dist[code] = dist;\n    for (n = 0; n < (1 << extra_dbits[code]); n++) {\n      _dist_code[dist++] = code;\n    }\n  }\n  //Assert (dist == 256, \"tr_static_init: dist != 256\");\n  dist >>= 7; /* from now on, all distances are divided by 128 */\n  for (; code < D_CODES; code++) {\n    base_dist[code] = dist << 7;\n    for (n = 0; n < (1 << (extra_dbits[code] - 7)); n++) {\n      _dist_code[256 + dist++] = code;\n    }\n  }\n  //Assert (dist == 256, \"tr_static_init: 256+dist != 512\");\n\n  /* Construct the codes of the static literal tree */\n  for (bits = 0; bits <= MAX_BITS; bits++) {\n    bl_count[bits] = 0;\n  }\n\n  n = 0;\n  while (n <= 143) {\n    static_ltree[n * 2 + 1]/*.Len*/ = 8;\n    n++;\n    bl_count[8]++;\n  }\n  while (n <= 255) {\n    static_ltree[n * 2 + 1]/*.Len*/ = 9;\n    n++;\n    bl_count[9]++;\n  }\n  while (n <= 279) {\n    static_ltree[n * 2 + 1]/*.Len*/ = 7;\n    n++;\n    bl_count[7]++;\n  }\n  while (n <= 287) {\n    static_ltree[n * 2 + 1]/*.Len*/ = 8;\n    n++;\n    bl_count[8]++;\n  }\n  /* Codes 286 and 287 do not exist, but we must include them in the\n   * tree construction to get a canonical Huffman tree (longest code\n   * all ones)\n   */\n  gen_codes(static_ltree, L_CODES + 1, bl_count);\n\n  /* The static distance tree is trivial: */\n  for (n = 0; n < D_CODES; n++) {\n    static_dtree[n * 2 + 1]/*.Len*/ = 5;\n    static_dtree[n * 2]/*.Code*/ = bi_reverse(n, 5);\n  }\n\n  // Now data ready and we can init static trees\n  static_l_desc = new StaticTreeDesc(static_ltree, extra_lbits, LITERALS + 1, L_CODES, MAX_BITS);\n  static_d_desc = new StaticTreeDesc(static_dtree, extra_dbits, 0,          D_CODES, MAX_BITS);\n  static_bl_desc = new StaticTreeDesc(new Array(0), extra_blbits, 0,         BL_CODES, MAX_BL_BITS);\n\n  //static_init_done = true;\n}\n\n\n/* ===========================================================================\n * Initialize a new block.\n */\nfunction init_block(s) {\n  var n; /* iterates over tree elements */\n\n  /* Initialize the trees. */\n  for (n = 0; n < L_CODES;  n++) { s.dyn_ltree[n * 2]/*.Freq*/ = 0; }\n  for (n = 0; n < D_CODES;  n++) { s.dyn_dtree[n * 2]/*.Freq*/ = 0; }\n  for (n = 0; n < BL_CODES; n++) { s.bl_tree[n * 2]/*.Freq*/ = 0; }\n\n  s.dyn_ltree[END_BLOCK * 2]/*.Freq*/ = 1;\n  s.opt_len = s.static_len = 0;\n  s.last_lit = s.matches = 0;\n}\n\n\n/* ===========================================================================\n * Flush the bit buffer and align the output on a byte boundary\n */\nfunction bi_windup(s)\n{\n  if (s.bi_valid > 8) {\n    put_short(s, s.bi_buf);\n  } else if (s.bi_valid > 0) {\n    //put_byte(s, (Byte)s->bi_buf);\n    s.pending_buf[s.pending++] = s.bi_buf;\n  }\n  s.bi_buf = 0;\n  s.bi_valid = 0;\n}\n\n/* ===========================================================================\n * Copy a stored block, storing first the length and its\n * one's complement if requested.\n */\nfunction copy_block(s, buf, len, header)\n//DeflateState *s;\n//charf    *buf;    /* the input data */\n//unsigned len;     /* its length */\n//int      header;  /* true if block header must be written */\n{\n  bi_windup(s);        /* align on byte boundary */\n\n  if (header) {\n    put_short(s, len);\n    put_short(s, ~len);\n  }\n//  while (len--) {\n//    put_byte(s, *buf++);\n//  }\n  utils.arraySet(s.pending_buf, s.window, buf, len, s.pending);\n  s.pending += len;\n}\n\n/* ===========================================================================\n * Compares to subtrees, using the tree depth as tie breaker when\n * the subtrees have equal frequency. This minimizes the worst case length.\n */\nfunction smaller(tree, n, m, depth) {\n  var _n2 = n * 2;\n  var _m2 = m * 2;\n  return (tree[_n2]/*.Freq*/ < tree[_m2]/*.Freq*/ ||\n         (tree[_n2]/*.Freq*/ === tree[_m2]/*.Freq*/ && depth[n] <= depth[m]));\n}\n\n/* ===========================================================================\n * Restore the heap property by moving down the tree starting at node k,\n * exchanging a node with the smallest of its two sons if necessary, stopping\n * when the heap property is re-established (each father smaller than its\n * two sons).\n */\nfunction pqdownheap(s, tree, k)\n//    deflate_state *s;\n//    ct_data *tree;  /* the tree to restore */\n//    int k;               /* node to move down */\n{\n  var v = s.heap[k];\n  var j = k << 1;  /* left son of k */\n  while (j <= s.heap_len) {\n    /* Set j to the smallest of the two sons: */\n    if (j < s.heap_len &&\n      smaller(tree, s.heap[j + 1], s.heap[j], s.depth)) {\n      j++;\n    }\n    /* Exit if v is smaller than both sons */\n    if (smaller(tree, v, s.heap[j], s.depth)) { break; }\n\n    /* Exchange v with the smallest son */\n    s.heap[k] = s.heap[j];\n    k = j;\n\n    /* And continue down the tree, setting j to the left son of k */\n    j <<= 1;\n  }\n  s.heap[k] = v;\n}\n\n\n// inlined manually\n// var SMALLEST = 1;\n\n/* ===========================================================================\n * Send the block data compressed using the given Huffman trees\n */\nfunction compress_block(s, ltree, dtree)\n//    deflate_state *s;\n//    const ct_data *ltree; /* literal tree */\n//    const ct_data *dtree; /* distance tree */\n{\n  var dist;           /* distance of matched string */\n  var lc;             /* match length or unmatched char (if dist == 0) */\n  var lx = 0;         /* running index in l_buf */\n  var code;           /* the code to send */\n  var extra;          /* number of extra bits to send */\n\n  if (s.last_lit !== 0) {\n    do {\n      dist = (s.pending_buf[s.d_buf + lx * 2] << 8) | (s.pending_buf[s.d_buf + lx * 2 + 1]);\n      lc = s.pending_buf[s.l_buf + lx];\n      lx++;\n\n      if (dist === 0) {\n        send_code(s, lc, ltree); /* send a literal byte */\n        //Tracecv(isgraph(lc), (stderr,\" '%c' \", lc));\n      } else {\n        /* Here, lc is the match length - MIN_MATCH */\n        code = _length_code[lc];\n        send_code(s, code + LITERALS + 1, ltree); /* send the length code */\n        extra = extra_lbits[code];\n        if (extra !== 0) {\n          lc -= base_length[code];\n          send_bits(s, lc, extra);       /* send the extra length bits */\n        }\n        dist--; /* dist is now the match distance - 1 */\n        code = d_code(dist);\n        //Assert (code < D_CODES, \"bad d_code\");\n\n        send_code(s, code, dtree);       /* send the distance code */\n        extra = extra_dbits[code];\n        if (extra !== 0) {\n          dist -= base_dist[code];\n          send_bits(s, dist, extra);   /* send the extra distance bits */\n        }\n      } /* literal or match pair ? */\n\n      /* Check that the overlay between pending_buf and d_buf+l_buf is ok: */\n      //Assert((uInt)(s->pending) < s->lit_bufsize + 2*lx,\n      //       \"pendingBuf overflow\");\n\n    } while (lx < s.last_lit);\n  }\n\n  send_code(s, END_BLOCK, ltree);\n}\n\n\n/* ===========================================================================\n * Construct one Huffman tree and assigns the code bit strings and lengths.\n * Update the total bit length for the current block.\n * IN assertion: the field freq is set for all tree elements.\n * OUT assertions: the fields len and code are set to the optimal bit length\n *     and corresponding code. The length opt_len is updated; static_len is\n *     also updated if stree is not null. The field max_code is set.\n */\nfunction build_tree(s, desc)\n//    deflate_state *s;\n//    tree_desc *desc; /* the tree descriptor */\n{\n  var tree     = desc.dyn_tree;\n  var stree    = desc.stat_desc.static_tree;\n  var has_stree = desc.stat_desc.has_stree;\n  var elems    = desc.stat_desc.elems;\n  var n, m;          /* iterate over heap elements */\n  var max_code = -1; /* largest code with non zero frequency */\n  var node;          /* new node being created */\n\n  /* Construct the initial heap, with least frequent element in\n   * heap[SMALLEST]. The sons of heap[n] are heap[2*n] and heap[2*n+1].\n   * heap[0] is not used.\n   */\n  s.heap_len = 0;\n  s.heap_max = HEAP_SIZE;\n\n  for (n = 0; n < elems; n++) {\n    if (tree[n * 2]/*.Freq*/ !== 0) {\n      s.heap[++s.heap_len] = max_code = n;\n      s.depth[n] = 0;\n\n    } else {\n      tree[n * 2 + 1]/*.Len*/ = 0;\n    }\n  }\n\n  /* The pkzip format requires that at least one distance code exists,\n   * and that at least one bit should be sent even if there is only one\n   * possible code. So to avoid special checks later on we force at least\n   * two codes of non zero frequency.\n   */\n  while (s.heap_len < 2) {\n    node = s.heap[++s.heap_len] = (max_code < 2 ? ++max_code : 0);\n    tree[node * 2]/*.Freq*/ = 1;\n    s.depth[node] = 0;\n    s.opt_len--;\n\n    if (has_stree) {\n      s.static_len -= stree[node * 2 + 1]/*.Len*/;\n    }\n    /* node is 0 or 1 so it does not have extra bits */\n  }\n  desc.max_code = max_code;\n\n  /* The elements heap[heap_len/2+1 .. heap_len] are leaves of the tree,\n   * establish sub-heaps of increasing lengths:\n   */\n  for (n = (s.heap_len >> 1/*int /2*/); n >= 1; n--) { pqdownheap(s, tree, n); }\n\n  /* Construct the Huffman tree by repeatedly combining the least two\n   * frequent nodes.\n   */\n  node = elems;              /* next internal node of the tree */\n  do {\n    //pqremove(s, tree, n);  /* n = node of least frequency */\n    /*** pqremove ***/\n    n = s.heap[1/*SMALLEST*/];\n    s.heap[1/*SMALLEST*/] = s.heap[s.heap_len--];\n    pqdownheap(s, tree, 1/*SMALLEST*/);\n    /***/\n\n    m = s.heap[1/*SMALLEST*/]; /* m = node of next least frequency */\n\n    s.heap[--s.heap_max] = n; /* keep the nodes sorted by frequency */\n    s.heap[--s.heap_max] = m;\n\n    /* Create a new node father of n and m */\n    tree[node * 2]/*.Freq*/ = tree[n * 2]/*.Freq*/ + tree[m * 2]/*.Freq*/;\n    s.depth[node] = (s.depth[n] >= s.depth[m] ? s.depth[n] : s.depth[m]) + 1;\n    tree[n * 2 + 1]/*.Dad*/ = tree[m * 2 + 1]/*.Dad*/ = node;\n\n    /* and insert the new node in the heap */\n    s.heap[1/*SMALLEST*/] = node++;\n    pqdownheap(s, tree, 1/*SMALLEST*/);\n\n  } while (s.heap_len >= 2);\n\n  s.heap[--s.heap_max] = s.heap[1/*SMALLEST*/];\n\n  /* At this point, the fields freq and dad are set. We can now\n   * generate the bit lengths.\n   */\n  gen_bitlen(s, desc);\n\n  /* The field len is now set, we can generate the bit codes */\n  gen_codes(tree, max_code, s.bl_count);\n}\n\n\n/* ===========================================================================\n * Scan a literal or distance tree to determine the frequencies of the codes\n * in the bit length tree.\n */\nfunction scan_tree(s, tree, max_code)\n//    deflate_state *s;\n//    ct_data *tree;   /* the tree to be scanned */\n//    int max_code;    /* and its largest code of non zero frequency */\n{\n  var n;                     /* iterates over all tree elements */\n  var prevlen = -1;          /* last emitted length */\n  var curlen;                /* length of current code */\n\n  var nextlen = tree[0 * 2 + 1]/*.Len*/; /* length of next code */\n\n  var count = 0;             /* repeat count of the current code */\n  var max_count = 7;         /* max repeat count */\n  var min_count = 4;         /* min repeat count */\n\n  if (nextlen === 0) {\n    max_count = 138;\n    min_count = 3;\n  }\n  tree[(max_code + 1) * 2 + 1]/*.Len*/ = 0xffff; /* guard */\n\n  for (n = 0; n <= max_code; n++) {\n    curlen = nextlen;\n    nextlen = tree[(n + 1) * 2 + 1]/*.Len*/;\n\n    if (++count < max_count && curlen === nextlen) {\n      continue;\n\n    } else if (count < min_count) {\n      s.bl_tree[curlen * 2]/*.Freq*/ += count;\n\n    } else if (curlen !== 0) {\n\n      if (curlen !== prevlen) { s.bl_tree[curlen * 2]/*.Freq*/++; }\n      s.bl_tree[REP_3_6 * 2]/*.Freq*/++;\n\n    } else if (count <= 10) {\n      s.bl_tree[REPZ_3_10 * 2]/*.Freq*/++;\n\n    } else {\n      s.bl_tree[REPZ_11_138 * 2]/*.Freq*/++;\n    }\n\n    count = 0;\n    prevlen = curlen;\n\n    if (nextlen === 0) {\n      max_count = 138;\n      min_count = 3;\n\n    } else if (curlen === nextlen) {\n      max_count = 6;\n      min_count = 3;\n\n    } else {\n      max_count = 7;\n      min_count = 4;\n    }\n  }\n}\n\n\n/* ===========================================================================\n * Send a literal or distance tree in compressed form, using the codes in\n * bl_tree.\n */\nfunction send_tree(s, tree, max_code)\n//    deflate_state *s;\n//    ct_data *tree; /* the tree to be scanned */\n//    int max_code;       /* and its largest code of non zero frequency */\n{\n  var n;                     /* iterates over all tree elements */\n  var prevlen = -1;          /* last emitted length */\n  var curlen;                /* length of current code */\n\n  var nextlen = tree[0 * 2 + 1]/*.Len*/; /* length of next code */\n\n  var count = 0;             /* repeat count of the current code */\n  var max_count = 7;         /* max repeat count */\n  var min_count = 4;         /* min repeat count */\n\n  /* tree[max_code+1].Len = -1; */  /* guard already set */\n  if (nextlen === 0) {\n    max_count = 138;\n    min_count = 3;\n  }\n\n  for (n = 0; n <= max_code; n++) {\n    curlen = nextlen;\n    nextlen = tree[(n + 1) * 2 + 1]/*.Len*/;\n\n    if (++count < max_count && curlen === nextlen) {\n      continue;\n\n    } else if (count < min_count) {\n      do { send_code(s, curlen, s.bl_tree); } while (--count !== 0);\n\n    } else if (curlen !== 0) {\n      if (curlen !== prevlen) {\n        send_code(s, curlen, s.bl_tree);\n        count--;\n      }\n      //Assert(count >= 3 && count <= 6, \" 3_6?\");\n      send_code(s, REP_3_6, s.bl_tree);\n      send_bits(s, count - 3, 2);\n\n    } else if (count <= 10) {\n      send_code(s, REPZ_3_10, s.bl_tree);\n      send_bits(s, count - 3, 3);\n\n    } else {\n      send_code(s, REPZ_11_138, s.bl_tree);\n      send_bits(s, count - 11, 7);\n    }\n\n    count = 0;\n    prevlen = curlen;\n    if (nextlen === 0) {\n      max_count = 138;\n      min_count = 3;\n\n    } else if (curlen === nextlen) {\n      max_count = 6;\n      min_count = 3;\n\n    } else {\n      max_count = 7;\n      min_count = 4;\n    }\n  }\n}\n\n\n/* ===========================================================================\n * Construct the Huffman tree for the bit lengths and return the index in\n * bl_order of the last bit length code to send.\n */\nfunction build_bl_tree(s) {\n  var max_blindex;  /* index of last bit length code of non zero freq */\n\n  /* Determine the bit length frequencies for literal and distance trees */\n  scan_tree(s, s.dyn_ltree, s.l_desc.max_code);\n  scan_tree(s, s.dyn_dtree, s.d_desc.max_code);\n\n  /* Build the bit length tree: */\n  build_tree(s, s.bl_desc);\n  /* opt_len now includes the length of the tree representations, except\n   * the lengths of the bit lengths codes and the 5+5+4 bits for the counts.\n   */\n\n  /* Determine the number of bit length codes to send. The pkzip format\n   * requires that at least 4 bit length codes be sent. (appnote.txt says\n   * 3 but the actual value used is 4.)\n   */\n  for (max_blindex = BL_CODES - 1; max_blindex >= 3; max_blindex--) {\n    if (s.bl_tree[bl_order[max_blindex] * 2 + 1]/*.Len*/ !== 0) {\n      break;\n    }\n  }\n  /* Update opt_len to include the bit length tree and counts */\n  s.opt_len += 3 * (max_blindex + 1) + 5 + 5 + 4;\n  //Tracev((stderr, \"\\ndyn trees: dyn %ld, stat %ld\",\n  //        s->opt_len, s->static_len));\n\n  return max_blindex;\n}\n\n\n/* ===========================================================================\n * Send the header for a block using dynamic Huffman trees: the counts, the\n * lengths of the bit length codes, the literal tree and the distance tree.\n * IN assertion: lcodes >= 257, dcodes >= 1, blcodes >= 4.\n */\nfunction send_all_trees(s, lcodes, dcodes, blcodes)\n//    deflate_state *s;\n//    int lcodes, dcodes, blcodes; /* number of codes for each tree */\n{\n  var rank;                    /* index in bl_order */\n\n  //Assert (lcodes >= 257 && dcodes >= 1 && blcodes >= 4, \"not enough codes\");\n  //Assert (lcodes <= L_CODES && dcodes <= D_CODES && blcodes <= BL_CODES,\n  //        \"too many codes\");\n  //Tracev((stderr, \"\\nbl counts: \"));\n  send_bits(s, lcodes - 257, 5); /* not +255 as stated in appnote.txt */\n  send_bits(s, dcodes - 1,   5);\n  send_bits(s, blcodes - 4,  4); /* not -3 as stated in appnote.txt */\n  for (rank = 0; rank < blcodes; rank++) {\n    //Tracev((stderr, \"\\nbl code %2d \", bl_order[rank]));\n    send_bits(s, s.bl_tree[bl_order[rank] * 2 + 1]/*.Len*/, 3);\n  }\n  //Tracev((stderr, \"\\nbl tree: sent %ld\", s->bits_sent));\n\n  send_tree(s, s.dyn_ltree, lcodes - 1); /* literal tree */\n  //Tracev((stderr, \"\\nlit tree: sent %ld\", s->bits_sent));\n\n  send_tree(s, s.dyn_dtree, dcodes - 1); /* distance tree */\n  //Tracev((stderr, \"\\ndist tree: sent %ld\", s->bits_sent));\n}\n\n\n/* ===========================================================================\n * Check if the data type is TEXT or BINARY, using the following algorithm:\n * - TEXT if the two conditions below are satisfied:\n *    a) There are no non-portable control characters belonging to the\n *       \"black list\" (0..6, 14..25, 28..31).\n *    b) There is at least one printable character belonging to the\n *       \"white list\" (9 {TAB}, 10 {LF}, 13 {CR}, 32..255).\n * - BINARY otherwise.\n * - The following partially-portable control characters form a\n *   \"gray list\" that is ignored in this detection algorithm:\n *   (7 {BEL}, 8 {BS}, 11 {VT}, 12 {FF}, 26 {SUB}, 27 {ESC}).\n * IN assertion: the fields Freq of dyn_ltree are set.\n */\nfunction detect_data_type(s) {\n  /* black_mask is the bit mask of black-listed bytes\n   * set bits 0..6, 14..25, and 28..31\n   * 0xf3ffc07f = binary 11110011111111111100000001111111\n   */\n  var black_mask = 0xf3ffc07f;\n  var n;\n\n  /* Check for non-textual (\"black-listed\") bytes. */\n  for (n = 0; n <= 31; n++, black_mask >>>= 1) {\n    if ((black_mask & 1) && (s.dyn_ltree[n * 2]/*.Freq*/ !== 0)) {\n      return Z_BINARY;\n    }\n  }\n\n  /* Check for textual (\"white-listed\") bytes. */\n  if (s.dyn_ltree[9 * 2]/*.Freq*/ !== 0 || s.dyn_ltree[10 * 2]/*.Freq*/ !== 0 ||\n      s.dyn_ltree[13 * 2]/*.Freq*/ !== 0) {\n    return Z_TEXT;\n  }\n  for (n = 32; n < LITERALS; n++) {\n    if (s.dyn_ltree[n * 2]/*.Freq*/ !== 0) {\n      return Z_TEXT;\n    }\n  }\n\n  /* There are no \"black-listed\" or \"white-listed\" bytes:\n   * this stream either is empty or has tolerated (\"gray-listed\") bytes only.\n   */\n  return Z_BINARY;\n}\n\n\nvar static_init_done = false;\n\n/* ===========================================================================\n * Initialize the tree data structures for a new zlib stream.\n */\nfunction _tr_init(s)\n{\n\n  if (!static_init_done) {\n    tr_static_init();\n    static_init_done = true;\n  }\n\n  s.l_desc  = new TreeDesc(s.dyn_ltree, static_l_desc);\n  s.d_desc  = new TreeDesc(s.dyn_dtree, static_d_desc);\n  s.bl_desc = new TreeDesc(s.bl_tree, static_bl_desc);\n\n  s.bi_buf = 0;\n  s.bi_valid = 0;\n\n  /* Initialize the first block of the first file: */\n  init_block(s);\n}\n\n\n/* ===========================================================================\n * Send a stored block\n */\nfunction _tr_stored_block(s, buf, stored_len, last)\n//DeflateState *s;\n//charf *buf;       /* input block */\n//ulg stored_len;   /* length of input block */\n//int last;         /* one if this is the last block for a file */\n{\n  send_bits(s, (STORED_BLOCK << 1) + (last ? 1 : 0), 3);    /* send block type */\n  copy_block(s, buf, stored_len, true); /* with header */\n}\n\n\n/* ===========================================================================\n * Send one empty static block to give enough lookahead for inflate.\n * This takes 10 bits, of which 7 may remain in the bit buffer.\n */\nfunction _tr_align(s) {\n  send_bits(s, STATIC_TREES << 1, 3);\n  send_code(s, END_BLOCK, static_ltree);\n  bi_flush(s);\n}\n\n\n/* ===========================================================================\n * Determine the best encoding for the current block: dynamic trees, static\n * trees or store, and output the encoded block to the zip file.\n */\nfunction _tr_flush_block(s, buf, stored_len, last)\n//DeflateState *s;\n//charf *buf;       /* input block, or NULL if too old */\n//ulg stored_len;   /* length of input block */\n//int last;         /* one if this is the last block for a file */\n{\n  var opt_lenb, static_lenb;  /* opt_len and static_len in bytes */\n  var max_blindex = 0;        /* index of last bit length code of non zero freq */\n\n  /* Build the Huffman trees unless a stored block is forced */\n  if (s.level > 0) {\n\n    /* Check if the file is binary or text */\n    if (s.strm.data_type === Z_UNKNOWN) {\n      s.strm.data_type = detect_data_type(s);\n    }\n\n    /* Construct the literal and distance trees */\n    build_tree(s, s.l_desc);\n    // Tracev((stderr, \"\\nlit data: dyn %ld, stat %ld\", s->opt_len,\n    //        s->static_len));\n\n    build_tree(s, s.d_desc);\n    // Tracev((stderr, \"\\ndist data: dyn %ld, stat %ld\", s->opt_len,\n    //        s->static_len));\n    /* At this point, opt_len and static_len are the total bit lengths of\n     * the compressed block data, excluding the tree representations.\n     */\n\n    /* Build the bit length tree for the above two trees, and get the index\n     * in bl_order of the last bit length code to send.\n     */\n    max_blindex = build_bl_tree(s);\n\n    /* Determine the best encoding. Compute the block lengths in bytes. */\n    opt_lenb = (s.opt_len + 3 + 7) >>> 3;\n    static_lenb = (s.static_len + 3 + 7) >>> 3;\n\n    // Tracev((stderr, \"\\nopt %lu(%lu) stat %lu(%lu) stored %lu lit %u \",\n    //        opt_lenb, s->opt_len, static_lenb, s->static_len, stored_len,\n    //        s->last_lit));\n\n    if (static_lenb <= opt_lenb) { opt_lenb = static_lenb; }\n\n  } else {\n    // Assert(buf != (char*)0, \"lost buf\");\n    opt_lenb = static_lenb = stored_len + 5; /* force a stored block */\n  }\n\n  if ((stored_len + 4 <= opt_lenb) && (buf !== -1)) {\n    /* 4: two words for the lengths */\n\n    /* The test buf != NULL is only necessary if LIT_BUFSIZE > WSIZE.\n     * Otherwise we can't have processed more than WSIZE input bytes since\n     * the last block flush, because compression would have been\n     * successful. If LIT_BUFSIZE <= WSIZE, it is never too late to\n     * transform a block into a stored block.\n     */\n    _tr_stored_block(s, buf, stored_len, last);\n\n  } else if (s.strategy === Z_FIXED || static_lenb === opt_lenb) {\n\n    send_bits(s, (STATIC_TREES << 1) + (last ? 1 : 0), 3);\n    compress_block(s, static_ltree, static_dtree);\n\n  } else {\n    send_bits(s, (DYN_TREES << 1) + (last ? 1 : 0), 3);\n    send_all_trees(s, s.l_desc.max_code + 1, s.d_desc.max_code + 1, max_blindex + 1);\n    compress_block(s, s.dyn_ltree, s.dyn_dtree);\n  }\n  // Assert (s->compressed_len == s->bits_sent, \"bad compressed size\");\n  /* The above check is made mod 2^32, for files larger than 512 MB\n   * and uLong implemented on 32 bits.\n   */\n  init_block(s);\n\n  if (last) {\n    bi_windup(s);\n  }\n  // Tracev((stderr,\"\\ncomprlen %lu(%lu) \", s->compressed_len>>3,\n  //       s->compressed_len-7*last));\n}\n\n/* ===========================================================================\n * Save the match info and tally the frequency counts. Return true if\n * the current block must be flushed.\n */\nfunction _tr_tally(s, dist, lc)\n//    deflate_state *s;\n//    unsigned dist;  /* distance of matched string */\n//    unsigned lc;    /* match length-MIN_MATCH or unmatched char (if dist==0) */\n{\n  //var out_length, in_length, dcode;\n\n  s.pending_buf[s.d_buf + s.last_lit * 2]     = (dist >>> 8) & 0xff;\n  s.pending_buf[s.d_buf + s.last_lit * 2 + 1] = dist & 0xff;\n\n  s.pending_buf[s.l_buf + s.last_lit] = lc & 0xff;\n  s.last_lit++;\n\n  if (dist === 0) {\n    /* lc is the unmatched char */\n    s.dyn_ltree[lc * 2]/*.Freq*/++;\n  } else {\n    s.matches++;\n    /* Here, lc is the match length - MIN_MATCH */\n    dist--;             /* dist = match distance - 1 */\n    //Assert((ush)dist < (ush)MAX_DIST(s) &&\n    //       (ush)lc <= (ush)(MAX_MATCH-MIN_MATCH) &&\n    //       (ush)d_code(dist) < (ush)D_CODES,  \"_tr_tally: bad match\");\n\n    s.dyn_ltree[(_length_code[lc] + LITERALS + 1) * 2]/*.Freq*/++;\n    s.dyn_dtree[d_code(dist) * 2]/*.Freq*/++;\n  }\n\n// (!) This block is disabled in zlib defailts,\n// don't enable it for binary compatibility\n\n//#ifdef TRUNCATE_BLOCK\n//  /* Try to guess if it is profitable to stop the current block here */\n//  if ((s.last_lit & 0x1fff) === 0 && s.level > 2) {\n//    /* Compute an upper bound for the compressed length */\n//    out_length = s.last_lit*8;\n//    in_length = s.strstart - s.block_start;\n//\n//    for (dcode = 0; dcode < D_CODES; dcode++) {\n//      out_length += s.dyn_dtree[dcode*2]/*.Freq*/ * (5 + extra_dbits[dcode]);\n//    }\n//    out_length >>>= 3;\n//    //Tracev((stderr,\"\\nlast_lit %u, in %ld, out ~%ld(%ld%%) \",\n//    //       s->last_lit, in_length, out_length,\n//    //       100L - out_length*100L/in_length));\n//    if (s.matches < (s.last_lit>>1)/*int /2*/ && out_length < (in_length>>1)/*int /2*/) {\n//      return true;\n//    }\n//  }\n//#endif\n\n  return (s.last_lit === s.lit_bufsize - 1);\n  /* We avoid equality with lit_bufsize because of wraparound at 64K\n   * on 16 bit machines and because stored blocks are restricted to\n   * 64K-1 bytes.\n   */\n}\n\nexports._tr_init  = _tr_init;\nexports._tr_stored_block = _tr_stored_block;\nexports._tr_flush_block  = _tr_flush_block;\nexports._tr_tally = _tr_tally;\nexports._tr_align = _tr_align;\n\n},{\"../utils/common\":41}],53:[function(require,module,exports){\n'use strict';\n\n// (C) 1995-2013 Jean-loup Gailly and Mark Adler\n// (C) 2014-2017 Vitaly Puzrin and Andrey Tupitsin\n//\n// This software is provided 'as-is', without any express or implied\n// warranty. In no event will the authors be held liable for any damages\n// arising from the use of this software.\n//\n// Permission is granted to anyone to use this software for any purpose,\n// including commercial applications, and to alter it and redistribute it\n// freely, subject to the following restrictions:\n//\n// 1. The origin of this software must not be misrepresented; you must not\n//   claim that you wrote the original software. If you use this software\n//   in a product, an acknowledgment in the product documentation would be\n//   appreciated but is not required.\n// 2. Altered source versions must be plainly marked as such, and must not be\n//   misrepresented as being the original software.\n// 3. This notice may not be removed or altered from any source distribution.\n\nfunction ZStream() {\n  /* next input byte */\n  this.input = null; // JS specific, because we have no pointers\n  this.next_in = 0;\n  /* number of bytes available at input */\n  this.avail_in = 0;\n  /* total number of input bytes read so far */\n  this.total_in = 0;\n  /* next output byte should be put there */\n  this.output = null; // JS specific, because we have no pointers\n  this.next_out = 0;\n  /* remaining free space at output */\n  this.avail_out = 0;\n  /* total number of bytes output so far */\n  this.total_out = 0;\n  /* last error message, NULL if no error */\n  this.msg = ''/*Z_NULL*/;\n  /* not visible by applications */\n  this.state = null;\n  /* best guess about the data type: binary or text */\n  this.data_type = 2/*Z_UNKNOWN*/;\n  /* adler32 value of the uncompressed data */\n  this.adler = 0;\n}\n\nmodule.exports = ZStream;\n\n},{}],54:[function(require,module,exports){\n(function (global){\n(function (global, undefined) {\n    \"use strict\";\n\n    if (global.setImmediate) {\n        return;\n    }\n\n    var nextHandle = 1; // Spec says greater than zero\n    var tasksByHandle = {};\n    var currentlyRunningATask = false;\n    var doc = global.document;\n    var registerImmediate;\n\n    function setImmediate(callback) {\n      // Callback can either be a function or a string\n      if (typeof callback !== \"function\") {\n        callback = new Function(\"\" + callback);\n      }\n      // Copy function arguments\n      var args = new Array(arguments.length - 1);\n      for (var i = 0; i < args.length; i++) {\n          args[i] = arguments[i + 1];\n      }\n      // Store and register the task\n      var task = { callback: callback, args: args };\n      tasksByHandle[nextHandle] = task;\n      registerImmediate(nextHandle);\n      return nextHandle++;\n    }\n\n    function clearImmediate(handle) {\n        delete tasksByHandle[handle];\n    }\n\n    function run(task) {\n        var callback = task.callback;\n        var args = task.args;\n        switch (args.length) {\n        case 0:\n            callback();\n            break;\n        case 1:\n            callback(args[0]);\n            break;\n        case 2:\n            callback(args[0], args[1]);\n            break;\n        case 3:\n            callback(args[0], args[1], args[2]);\n            break;\n        default:\n            callback.apply(undefined, args);\n            break;\n        }\n    }\n\n    function runIfPresent(handle) {\n        // From the spec: \"Wait until any invocations of this algorithm started before this one have completed.\"\n        // So if we're currently running a task, we'll need to delay this invocation.\n        if (currentlyRunningATask) {\n            // Delay by doing a setTimeout. setImmediate was tried instead, but in Firefox 7 it generated a\n            // \"too much recursion\" error.\n            setTimeout(runIfPresent, 0, handle);\n        } else {\n            var task = tasksByHandle[handle];\n            if (task) {\n                currentlyRunningATask = true;\n                try {\n                    run(task);\n                } finally {\n                    clearImmediate(handle);\n                    currentlyRunningATask = false;\n                }\n            }\n        }\n    }\n\n    function installNextTickImplementation() {\n        registerImmediate = function(handle) {\n            process.nextTick(function () { runIfPresent(handle); });\n        };\n    }\n\n    function canUsePostMessage() {\n        // The test against `importScripts` prevents this implementation from being installed inside a web worker,\n        // where `global.postMessage` means something completely different and can't be used for this purpose.\n        if (global.postMessage && !global.importScripts) {\n            var postMessageIsAsynchronous = true;\n            var oldOnMessage = global.onmessage;\n            global.onmessage = function() {\n                postMessageIsAsynchronous = false;\n            };\n            global.postMessage(\"\", \"*\");\n            global.onmessage = oldOnMessage;\n            return postMessageIsAsynchronous;\n        }\n    }\n\n    function installPostMessageImplementation() {\n        // Installs an event handler on `global` for the `message` event: see\n        // * https://developer.mozilla.org/en/DOM/window.postMessage\n        // * http://www.whatwg.org/specs/web-apps/current-work/multipage/comms.html#crossDocumentMessages\n\n        var messagePrefix = \"setImmediate$\" + Math.random() + \"$\";\n        var onGlobalMessage = function(event) {\n            if (event.source === global &&\n                typeof event.data === \"string\" &&\n                event.data.indexOf(messagePrefix) === 0) {\n                runIfPresent(+event.data.slice(messagePrefix.length));\n            }\n        };\n\n        if (global.addEventListener) {\n            global.addEventListener(\"message\", onGlobalMessage, false);\n        } else {\n            global.attachEvent(\"onmessage\", onGlobalMessage);\n        }\n\n        registerImmediate = function(handle) {\n            global.postMessage(messagePrefix + handle, \"*\");\n        };\n    }\n\n    function installMessageChannelImplementation() {\n        var channel = new MessageChannel();\n        channel.port1.onmessage = function(event) {\n            var handle = event.data;\n            runIfPresent(handle);\n        };\n\n        registerImmediate = function(handle) {\n            channel.port2.postMessage(handle);\n        };\n    }\n\n    function installReadyStateChangeImplementation() {\n        var html = doc.documentElement;\n        registerImmediate = function(handle) {\n            // Create a <script> element; its readystatechange event will be fired asynchronously once it is inserted\n            // into the document. Do so, thus queuing up the task. Remember to clean up once it's been called.\n            var script = doc.createElement(\"script\");\n            script.onreadystatechange = function () {\n                runIfPresent(handle);\n                script.onreadystatechange = null;\n                html.removeChild(script);\n                script = null;\n            };\n            html.appendChild(script);\n        };\n    }\n\n    function installSetTimeoutImplementation() {\n        registerImmediate = function(handle) {\n            setTimeout(runIfPresent, 0, handle);\n        };\n    }\n\n    // If supported, we should attach to the prototype of global, since that is where setTimeout et al. live.\n    var attachTo = Object.getPrototypeOf && Object.getPrototypeOf(global);\n    attachTo = attachTo && attachTo.setTimeout ? attachTo : global;\n\n    // Don't get fooled by e.g. browserify environments.\n    if ({}.toString.call(global.process) === \"[object process]\") {\n        // For Node.js before 0.9\n        installNextTickImplementation();\n\n    } else if (canUsePostMessage()) {\n        // For non-IE10 modern browsers\n        installPostMessageImplementation();\n\n    } else if (global.MessageChannel) {\n        // For web workers, where supported\n        installMessageChannelImplementation();\n\n    } else if (doc && \"onreadystatechange\" in doc.createElement(\"script\")) {\n        // For IE 6–8\n        installReadyStateChangeImplementation();\n\n    } else {\n        // For older browsers\n        installSetTimeoutImplementation();\n    }\n\n    attachTo.setImmediate = setImmediate;\n    attachTo.clearImmediate = clearImmediate;\n}(typeof self === \"undefined\" ? typeof global === \"undefined\" ? this : global : self));\n\n}).call(this,typeof global !== \"undefined\" ? global : typeof self !== \"undefined\" ? self : typeof window !== \"undefined\" ? window : {})\n},{}]},{},[10])(10)\n});","'use strict';\n\nObject.defineProperty(exports, \"__esModule\", {\n    value: true\n});\nexports.createElement = createElement;\nfunction createElement(name) {\n    return document.createElementNS('http://www.w3.org/2000/svg', name);\n}\n\nexports.default = {\n    createElement: createElement\n};\n","'use strict'\n\n/**\n * Ponyfill for `Array.prototype.find` which is only available in ES6 runtimes.\n *\n * Works with anything that has a `length` property and index access properties, including NodeList.\n *\n * @template {unknown} T\n * @param {Array<T> | ({length:number, [number]: T})} list\n * @param {function (item: T, index: number, list:Array<T> | ({length:number, [number]: T})):boolean} predicate\n * @param {Partial<Pick<ArrayConstructor['prototype'], 'find'>>?} ac `Array.prototype` by default,\n * \t\t\t\tallows injecting a custom implementation in tests\n * @returns {T | undefined}\n *\n * @see https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/find\n * @see https://tc39.es/ecma262/multipage/indexed-collections.html#sec-array.prototype.find\n */\nfunction find(list, predicate, ac) {\n\tif (ac === undefined) {\n\t\tac = Array.prototype;\n\t}\n\tif (list && typeof ac.find === 'function') {\n\t\treturn ac.find.call(list, predicate);\n\t}\n\tfor (var i = 0; i < list.length; i++) {\n\t\tif (Object.prototype.hasOwnProperty.call(list, i)) {\n\t\t\tvar item = list[i];\n\t\t\tif (predicate.call(undefined, item, i, list)) {\n\t\t\t\treturn item;\n\t\t\t}\n\t\t}\n\t}\n}\n\n/**\n * \"Shallow freezes\" an object to render it immutable.\n * Uses `Object.freeze` if available,\n * otherwise the immutability is only in the type.\n *\n * Is used to create \"enum like\" objects.\n *\n * @template T\n * @param {T} object the object to freeze\n * @param {Pick<ObjectConstructor, 'freeze'> = Object} oc `Object` by default,\n * \t\t\t\tallows to inject custom object constructor for tests\n * @returns {Readonly<T>}\n *\n * @see https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/freeze\n */\nfunction freeze(object, oc) {\n\tif (oc === undefined) {\n\t\toc = Object\n\t}\n\treturn oc && typeof oc.freeze === 'function' ? oc.freeze(object) : object\n}\n\n/**\n * All mime types that are allowed as input to `DOMParser.parseFromString`\n *\n * @see https://developer.mozilla.org/en-US/docs/Web/API/DOMParser/parseFromString#Argument02 MDN\n * @see https://html.spec.whatwg.org/multipage/dynamic-markup-insertion.html#domparsersupportedtype WHATWG HTML Spec\n * @see DOMParser.prototype.parseFromString\n */\nvar MIME_TYPE = freeze({\n\t/**\n\t * `text/html`, the only mime type that triggers treating an XML document as HTML.\n\t *\n\t * @see DOMParser.SupportedType.isHTML\n\t * @see https://www.iana.org/assignments/media-types/text/html IANA MimeType registration\n\t * @see https://en.wikipedia.org/wiki/HTML Wikipedia\n\t * @see https://developer.mozilla.org/en-US/docs/Web/API/DOMParser/parseFromString MDN\n\t * @see https://html.spec.whatwg.org/multipage/dynamic-markup-insertion.html#dom-domparser-parsefromstring WHATWG HTML Spec\n\t */\n\tHTML: 'text/html',\n\n\t/**\n\t * Helper method to check a mime type if it indicates an HTML document\n\t *\n\t * @param {string} [value]\n\t * @returns {boolean}\n\t *\n\t * @see https://www.iana.org/assignments/media-types/text/html IANA MimeType registration\n\t * @see https://en.wikipedia.org/wiki/HTML Wikipedia\n\t * @see https://developer.mozilla.org/en-US/docs/Web/API/DOMParser/parseFromString MDN\n\t * @see https://html.spec.whatwg.org/multipage/dynamic-markup-insertion.html#dom-domparser-parsefromstring \t */\n\tisHTML: function (value) {\n\t\treturn value === MIME_TYPE.HTML\n\t},\n\n\t/**\n\t * `application/xml`, the standard mime type for XML documents.\n\t *\n\t * @see https://www.iana.org/assignments/media-types/application/xml IANA MimeType registration\n\t * @see https://tools.ietf.org/html/rfc7303#section-9.1 RFC 7303\n\t * @see https://en.wikipedia.org/wiki/XML_and_MIME Wikipedia\n\t */\n\tXML_APPLICATION: 'application/xml',\n\n\t/**\n\t * `text/html`, an alias for `application/xml`.\n\t *\n\t * @see https://tools.ietf.org/html/rfc7303#section-9.2 RFC 7303\n\t * @see https://www.iana.org/assignments/media-types/text/xml IANA MimeType registration\n\t * @see https://en.wikipedia.org/wiki/XML_and_MIME Wikipedia\n\t */\n\tXML_TEXT: 'text/xml',\n\n\t/**\n\t * `application/xhtml+xml`, indicates an XML document that has the default HTML namespace,\n\t * but is parsed as an XML document.\n\t *\n\t * @see https://www.iana.org/assignments/media-types/application/xhtml+xml IANA MimeType registration\n\t * @see https://dom.spec.whatwg.org/#dom-domimplementation-createdocument WHATWG DOM Spec\n\t * @see https://en.wikipedia.org/wiki/XHTML Wikipedia\n\t */\n\tXML_XHTML_APPLICATION: 'application/xhtml+xml',\n\n\t/**\n\t * `image/svg+xml`,\n\t *\n\t * @see https://www.iana.org/assignments/media-types/image/svg+xml IANA MimeType registration\n\t * @see https://www.w3.org/TR/SVG11/ W3C SVG 1.1\n\t * @see https://en.wikipedia.org/wiki/Scalable_Vector_Graphics Wikipedia\n\t */\n\tXML_SVG_IMAGE: 'image/svg+xml',\n})\n\n/**\n * Namespaces that are used in this code base.\n *\n * @see http://www.w3.org/TR/REC-xml-names\n */\nvar NAMESPACE = freeze({\n\t/**\n\t * The XHTML namespace.\n\t *\n\t * @see http://www.w3.org/1999/xhtml\n\t */\n\tHTML: 'http://www.w3.org/1999/xhtml',\n\n\t/**\n\t * Checks if `uri` equals `NAMESPACE.HTML`.\n\t *\n\t * @param {string} [uri]\n\t *\n\t * @see NAMESPACE.HTML\n\t */\n\tisHTML: function (uri) {\n\t\treturn uri === NAMESPACE.HTML\n\t},\n\n\t/**\n\t * The SVG namespace.\n\t *\n\t * @see http://www.w3.org/2000/svg\n\t */\n\tSVG: 'http://www.w3.org/2000/svg',\n\n\t/**\n\t * The `xml:` namespace.\n\t *\n\t * @see http://www.w3.org/XML/1998/namespace\n\t */\n\tXML: 'http://www.w3.org/XML/1998/namespace',\n\n\t/**\n\t * The `xmlns:` namespace\n\t *\n\t * @see https://www.w3.org/2000/xmlns/\n\t */\n\tXMLNS: 'http://www.w3.org/2000/xmlns/',\n})\n\nexports.find = find;\nexports.freeze = freeze;\nexports.MIME_TYPE = MIME_TYPE;\nexports.NAMESPACE = NAMESPACE;\n","import { extend } from \"./utils/core\";\nimport { EVENTS } from \"./utils/constants\";\nimport EventEmitter from \"event-emitter\";\n\n/**\n * Figures out the CSS values to apply for a layout\n * @class\n * @param {object} settings\n * @param {string} [settings.layout='reflowable']\n * @param {string} [settings.spread]\n * @param {number} [settings.minSpreadWidth=800]\n * @param {boolean} [settings.evenSpreads=false]\n */\nclass Layout {\n\tconstructor(settings) {\n\t\tthis.settings = settings;\n\t\tthis.name = settings.layout || \"reflowable\";\n\t\tthis._spread = (settings.spread === \"none\") ? false : true;\n\t\tthis._minSpreadWidth = settings.minSpreadWidth || 800;\n\t\tthis._evenSpreads = settings.evenSpreads || false;\n\n\t\tif (settings.flow === \"scrolled\" ||\n\t\t\t\tsettings.flow === \"scrolled-continuous\" ||\n\t\t\t\tsettings.flow === \"scrolled-doc\") {\n\t\t\tthis._flow = \"scrolled\";\n\t\t} else {\n\t\t\tthis._flow = \"paginated\";\n\t\t}\n\n\n\t\tthis.width = 0;\n\t\tthis.height = 0;\n\t\tthis.spreadWidth = 0;\n\t\tthis.delta = 0;\n\n\t\tthis.columnWidth = 0;\n\t\tthis.gap = 0;\n\t\tthis.divisor = 1;\n\n\t\tthis.props = {\n\t\t\tname: this.name,\n\t\t\tspread: this._spread,\n\t\t\tflow: this._flow,\n\t\t\twidth: 0,\n\t\t\theight: 0,\n\t\t\tspreadWidth: 0,\n\t\t\tdelta: 0,\n\t\t\tcolumnWidth: 0,\n\t\t\tgap: 0,\n\t\t\tdivisor: 1\n\t\t};\n\n\t}\n\n\t/**\n\t * Switch the flow between paginated and scrolled\n\t * @param  {string} flow paginated | scrolled\n\t * @return {string} simplified flow\n\t */\n\tflow(flow) {\n\t\tif (typeof(flow) != \"undefined\") {\n\t\t\tif (flow === \"scrolled\" ||\n\t\t\t\t\tflow === \"scrolled-continuous\" ||\n\t\t\t\t\tflow === \"scrolled-doc\") {\n\t\t\t\tthis._flow = \"scrolled\";\n\t\t\t} else {\n\t\t\t\tthis._flow = \"paginated\";\n\t\t\t}\n\t\t\t// this.props.flow = this._flow;\n\t\t\tthis.update({flow: this._flow});\n\t\t}\n\t\treturn this._flow;\n\t}\n\n\t/**\n\t * Switch between using spreads or not, and set the\n\t * width at which they switch to single.\n\t * @param  {string} spread \"none\" | \"always\" | \"auto\"\n\t * @param  {number} min integer in pixels\n\t * @return {boolean} spread true | false\n\t */\n\tspread(spread, min) {\n\n\t\tif (spread) {\n\t\t\tthis._spread = (spread === \"none\") ? false : true;\n\t\t\t// this.props.spread = this._spread;\n\t\t\tthis.update({spread: this._spread});\n\t\t}\n\n\t\tif (min >= 0) {\n\t\t\tthis._minSpreadWidth = min;\n\t\t}\n\n\t\treturn this._spread;\n\t}\n\n\t/**\n\t * Calculate the dimensions of the pagination\n\t * @param  {number} _width  width of the rendering\n\t * @param  {number} _height height of the rendering\n\t * @param  {number} _gap    width of the gap between columns\n\t */\n\tcalculate(_width, _height, _gap){\n\n\t\tvar divisor = 1;\n\t\tvar gap = _gap || 0;\n\n\t\t//-- Check the width and create even width columns\n\t\t// var fullWidth = Math.floor(_width);\n\t\tvar width = _width;\n\t\tvar height = _height;\n\n\t\tvar section = Math.floor(width / 12);\n\n\t\tvar columnWidth;\n\t\tvar spreadWidth;\n\t\tvar pageWidth;\n\t\tvar delta;\n\n\t\tif (this._spread && width >= this._minSpreadWidth) {\n\t\t\tdivisor = 2;\n\t\t} else {\n\t\t\tdivisor = 1;\n\t\t}\n\n\t\tif (this.name === \"reflowable\" && this._flow === \"paginated\" && !(_gap >= 0)) {\n\t\t\tgap = ((section % 2 === 0) ? section : section - 1);\n\t\t}\n\n\t\tif (this.name === \"pre-paginated\" ) {\n\t\t\tgap = 0;\n\t\t}\n\n\t\t//-- Double Page\n\t\tif(divisor > 1) {\n\t\t\t// width = width - gap;\n\t\t\t// columnWidth = (width - gap) / divisor;\n\t\t\t// gap = gap / divisor;\n\t\t\tcolumnWidth = (width / divisor) - gap;\n\t\t\tpageWidth = columnWidth + gap;\n\t\t} else {\n\t\t\tcolumnWidth = width;\n\t\t\tpageWidth = width;\n\t\t}\n\n\t\tif (this.name === \"pre-paginated\" && divisor > 1) {\n\t\t\twidth = columnWidth;\n\t\t}\n\n\t\tspreadWidth = (columnWidth * divisor) + gap;\n\n\t\tdelta = width;\n\n\t\tthis.width = width;\n\t\tthis.height = height;\n\t\tthis.spreadWidth = spreadWidth;\n\t\tthis.pageWidth = pageWidth;\n\t\tthis.delta = delta;\n\n\t\tthis.columnWidth = columnWidth;\n\t\tthis.gap = gap;\n\t\tthis.divisor = divisor;\n\n\t\t// this.props.width = width;\n\t\t// this.props.height = _height;\n\t\t// this.props.spreadWidth = spreadWidth;\n\t\t// this.props.pageWidth = pageWidth;\n\t\t// this.props.delta = delta;\n\t\t//\n\t\t// this.props.columnWidth = colWidth;\n\t\t// this.props.gap = gap;\n\t\t// this.props.divisor = divisor;\n\n\t\tthis.update({\n\t\t\twidth,\n\t\t\theight,\n\t\t\tspreadWidth,\n\t\t\tpageWidth,\n\t\t\tdelta,\n\t\t\tcolumnWidth,\n\t\t\tgap,\n\t\t\tdivisor\n\t\t});\n\n\t}\n\n\t/**\n\t * Apply Css to a Document\n\t * @param  {Contents} contents\n\t * @return {Promise}\n\t */\n\tformat(contents, section, axis){\n\t\tvar formating;\n\n\t\tif (this.name === \"pre-paginated\") {\n\t\t\tformating = contents.fit(this.columnWidth, this.height, section);\n\t\t} else if (this._flow === \"paginated\") {\n\t\t\tformating = contents.columns(this.width, this.height, this.columnWidth, this.gap, this.settings.direction);\n\t\t} else if (axis && axis === \"horizontal\") {\n\t\t\tformating = contents.size(null, this.height);\n\t\t} else {\n\t\t\tformating = contents.size(this.width, null);\t\t\t\t\n\t\t}\n\n\t\treturn formating; // might be a promise in some View Managers\n\t}\n\n\t/**\n\t * Count number of pages\n\t * @param  {number} totalLength\n\t * @param  {number} pageLength\n\t * @return {{spreads: Number, pages: Number}}\n\t */\n\tcount(totalLength, pageLength) {\n\n\t\tlet spreads, pages;\n\n\t\tif (this.name === \"pre-paginated\") {\n\t\t\tspreads = 1;\n\t\t\tpages = 1;\n\t\t} else if (this._flow === \"paginated\") {\n\t\t\tpageLength = pageLength || this.delta;\n\t\t\tspreads = Math.ceil( totalLength / pageLength);\n\t\t\tpages = spreads * this.divisor;\n\t\t} else { // scrolled\n\t\t\tpageLength = pageLength || this.height;\n\t\t\tspreads = Math.ceil( totalLength / pageLength);\n\t\t\tpages = spreads;\n\t\t}\n\n\t\treturn {\n\t\t\tspreads,\n\t\t\tpages\n\t\t};\n\n\t}\n\n\t/**\n\t * Update props that have changed\n\t * @private\n\t * @param  {object} props\n\t */\n\tupdate(props) {\n\t\t// Remove props that haven't changed\n\t\tObject.keys(props).forEach((propName) => {\n\t\t\tif (this.props[propName] === props[propName]) {\n\t\t\t\tdelete props[propName];\n\t\t\t}\n\t\t});\n\n\t\tif(Object.keys(props).length > 0) {\n\t\t\tlet newProps = extend(this.props, props);\n\t\t\tthis.emit(EVENTS.LAYOUT.UPDATED, newProps, props);\n\t\t}\n\t}\n}\n\nEventEmitter(Layout.prototype);\n\nexport default Layout;\n","import {extend, defer, requestAnimationFrame, prefixed} from \"../../utils/core\";\nimport { EVENTS, DOM_EVENTS } from \"../../utils/constants\";\nimport EventEmitter from \"event-emitter\";\n\n// easing equations from https://github.com/danro/easing-js/blob/master/easing.js\nconst PI_D2 = (Math.PI / 2);\nconst EASING_EQUATIONS = {\n\t\teaseOutSine: function (pos) {\n\t\t\t\treturn Math.sin(pos * PI_D2);\n\t\t},\n\t\teaseInOutSine: function (pos) {\n\t\t\t\treturn (-0.5 * (Math.cos(Math.PI * pos) - 1));\n\t\t},\n\t\teaseInOutQuint: function (pos) {\n\t\t\t\tif ((pos /= 0.5) < 1) {\n\t\t\t\t\t\treturn 0.5 * Math.pow(pos, 5);\n\t\t\t\t}\n\t\t\t\treturn 0.5 * (Math.pow((pos - 2), 5) + 2);\n\t\t},\n\t\teaseInCubic: function(pos) {\n\t\t\treturn Math.pow(pos, 3);\n  \t}\n};\n\nclass Snap {\n\tconstructor(manager, options) {\n\n\t\tthis.settings = extend({\n\t\t\tduration: 80,\n\t\t\tminVelocity: 0.2,\n\t\t\tminDistance: 10,\n\t\t\teasing: EASING_EQUATIONS['easeInCubic']\n\t\t}, options || {});\n\n\t\tthis.supportsTouch = this.supportsTouch();\n\n\t\tif (this.supportsTouch) {\n\t\t\tthis.setup(manager);\n\t\t}\n\t}\n\n\tsetup(manager) {\n\t\tthis.manager = manager;\n\n\t\tthis.layout = this.manager.layout;\n\n\t\tthis.fullsize = this.manager.settings.fullsize;\n\t\tif (this.fullsize) {\n\t\t\tthis.element = this.manager.stage.element;\n\t\t\tthis.scroller = window;\n\t\t\tthis.disableScroll();\n\t\t} else {\n\t\t\tthis.element = this.manager.stage.container;\n\t\t\tthis.scroller = this.element;\n\t\t\tthis.element.style[\"WebkitOverflowScrolling\"] = \"touch\";\n\t\t}\n\n\t\t// this.overflow = this.manager.overflow;\n\n\t\t// set lookahead offset to page width\n\t\tthis.manager.settings.offset = this.layout.width;\n\t\tthis.manager.settings.afterScrolledTimeout = this.settings.duration * 2;\n\n\t\tthis.isVertical = this.manager.settings.axis === \"vertical\";\n\n\t\t// disable snapping if not paginated or axis in not horizontal\n\t\tif (!this.manager.isPaginated || this.isVertical) {\n\t\t\treturn;\n\t\t}\n\n\t\tthis.touchCanceler = false;\n\t\tthis.resizeCanceler = false;\n\t\tthis.snapping = false;\n\n\n\t\tthis.scrollLeft;\n\t\tthis.scrollTop;\n\n\t\tthis.startTouchX = undefined;\n\t\tthis.startTouchY = undefined;\n\t\tthis.startTime = undefined;\n\t\tthis.endTouchX = undefined;\n\t\tthis.endTouchY = undefined;\n\t\tthis.endTime = undefined;\n\n\t\tthis.addListeners();\n\t}\n\n\tsupportsTouch() {\n\t\tif (('ontouchstart' in window) || window.DocumentTouch && document instanceof DocumentTouch) {\n\t\t\treturn true;\n\t\t}\n\n\t\treturn false;\n\t}\n\n\tdisableScroll() {\n\t\tthis.element.style.overflow = \"hidden\";\n\t}\n\n\tenableScroll() {\n\t\tthis.element.style.overflow = \"\";\n\t}\n\n\taddListeners() {\n\t\tthis._onResize = this.onResize.bind(this);\n\t\twindow.addEventListener('resize', this._onResize);\n\n\t\tthis._onScroll = this.onScroll.bind(this);\n\t\tthis.scroller.addEventListener('scroll', this._onScroll);\n\n\t\tthis._onTouchStart = this.onTouchStart.bind(this);\n\t\tthis.scroller.addEventListener('touchstart', this._onTouchStart, { passive: true });\n\t\tthis.on('touchstart', this._onTouchStart);\n\n\t\tthis._onTouchMove = this.onTouchMove.bind(this);\n\t\tthis.scroller.addEventListener('touchmove', this._onTouchMove, { passive: true });\n\t\tthis.on('touchmove', this._onTouchMove);\n\n\t\tthis._onTouchEnd = this.onTouchEnd.bind(this);\n\t\tthis.scroller.addEventListener('touchend', this._onTouchEnd, { passive: true });\n\t\tthis.on('touchend', this._onTouchEnd);\n\n\t\tthis._afterDisplayed = this.afterDisplayed.bind(this);\n\t\tthis.manager.on(EVENTS.MANAGERS.ADDED, this._afterDisplayed);\n\t}\n\n\tremoveListeners() {\n\t\twindow.removeEventListener('resize', this._onResize);\n\t\tthis._onResize = undefined;\n\n\t\tthis.scroller.removeEventListener('scroll', this._onScroll);\n\t\tthis._onScroll = undefined;\n\n\t\tthis.scroller.removeEventListener('touchstart', this._onTouchStart, { passive: true });\n\t\tthis.off('touchstart', this._onTouchStart);\n\t\tthis._onTouchStart = undefined;\n\n\t\tthis.scroller.removeEventListener('touchmove', this._onTouchMove, { passive: true });\n\t\tthis.off('touchmove', this._onTouchMove);\n\t\tthis._onTouchMove = undefined;\n\n\t\tthis.scroller.removeEventListener('touchend', this._onTouchEnd, { passive: true });\n\t\tthis.off('touchend', this._onTouchEnd);\n\t\tthis._onTouchEnd = undefined;\n\n\t\tthis.manager.off(EVENTS.MANAGERS.ADDED, this._afterDisplayed);\n\t\tthis._afterDisplayed = undefined;\n\t}\n\n\tafterDisplayed(view) {\n\t\tlet contents = view.contents;\n\t\t[\"touchstart\", \"touchmove\", \"touchend\"].forEach((e) => {\n\t\t\tcontents.on(e, (ev) => this.triggerViewEvent(ev, contents));\n\t\t});\n\t}\n\n\ttriggerViewEvent(e, contents){\n\t\tthis.emit(e.type, e, contents);\n\t}\n\n\tonScroll(e) {\n\t\tthis.scrollLeft = this.fullsize ? window.scrollX : this.scroller.scrollLeft;\n\t\tthis.scrollTop = this.fullsize ? window.scrollY : this.scroller.scrollTop;\n\t}\n\n\tonResize(e) {\n\t\tthis.resizeCanceler = true;\n\t}\n\n\tonTouchStart(e) {\n\t\tlet { screenX, screenY } = e.touches[0];\n\n\t\tif (this.fullsize) {\n\t\t\tthis.enableScroll();\n\t\t}\n\n\t\tthis.touchCanceler = true;\n\n\t\tif (!this.startTouchX) {\n\t\t\tthis.startTouchX = screenX;\n\t\t\tthis.startTouchY = screenY;\n\t\t\tthis.startTime = this.now();\n\t\t}\n\n\t\tthis.endTouchX = screenX;\n\t\tthis.endTouchY = screenY;\n\t\tthis.endTime = this.now();\n\t}\n\n\tonTouchMove(e) {\n\t\tlet { screenX, screenY } = e.touches[0];\n\t\tlet deltaY = Math.abs(screenY - this.endTouchY);\n\n\t\tthis.touchCanceler = true;\n\n\n\t\tif (!this.fullsize && deltaY < 10) {\n\t\t\tthis.element.scrollLeft -= screenX - this.endTouchX;\n\t\t}\n\n\t\tthis.endTouchX = screenX;\n\t\tthis.endTouchY = screenY;\n\t\tthis.endTime = this.now();\n\t}\n\n\tonTouchEnd(e) {\n\t\tif (this.fullsize) {\n\t\t\tthis.disableScroll();\n\t\t}\n\n\t\tthis.touchCanceler = false;\n\n\t\tlet swipped = this.wasSwiped();\n\n\t\tif (swipped !== 0) {\n\t\t\tthis.snap(swipped);\n\t\t} else {\n\t\t\tthis.snap();\n\t\t}\n\n\t\tthis.startTouchX = undefined;\n\t\tthis.startTouchY = undefined;\n\t\tthis.startTime = undefined;\n\t\tthis.endTouchX = undefined;\n\t\tthis.endTouchY = undefined;\n\t\tthis.endTime = undefined;\n\t}\n\n\twasSwiped() {\n\t\tlet snapWidth = this.layout.pageWidth * this.layout.divisor;\n\t\tlet distance = (this.endTouchX - this.startTouchX);\n\t\tlet absolute = Math.abs(distance);\n\t\tlet time = this.endTime - this.startTime;\n\t\tlet velocity = (distance / time);\n\t\tlet minVelocity = this.settings.minVelocity;\n\n\t\tif (absolute <= this.settings.minDistance || absolute >= snapWidth) {\n\t\t\treturn 0;\n\t\t}\n\n\t\tif (velocity > minVelocity) {\n\t\t\t// previous\n\t\t\treturn -1;\n\t\t} else if (velocity < -minVelocity) {\n\t\t\t// next\n\t\t\treturn 1;\n\t\t}\n\t}\n\n\tneedsSnap() {\n\t\tlet left = this.scrollLeft;\n\t\tlet snapWidth = this.layout.pageWidth * this.layout.divisor;\n\t\treturn (left % snapWidth) !== 0;\n\t}\n\n\tsnap(howMany=0) {\n\t\tlet left = this.scrollLeft;\n\t\tlet snapWidth = this.layout.pageWidth * this.layout.divisor;\n\t\tlet snapTo = Math.round(left / snapWidth) * snapWidth;\n\n\t\tif (howMany) {\n\t\t\tsnapTo += (howMany * snapWidth);\n\t\t}\n\n\t\treturn this.smoothScrollTo(snapTo);\n\t}\n\n\tsmoothScrollTo(destination) {\n\t\tconst deferred = new defer();\n\t\tconst start = this.scrollLeft;\n\t\tconst startTime = this.now();\n\n\t\tconst duration = this.settings.duration;\n\t\tconst easing = this.settings.easing;\n\n\t\tthis.snapping = true;\n\n\t\t// add animation loop\n\t\tfunction tick() {\n\t\t\tconst now = this.now();\n\t\t\tconst time = Math.min(1, ((now - startTime) / duration));\n\t\t\tconst timeFunction = easing(time);\n\n\n\t\t\tif (this.touchCanceler || this.resizeCanceler) {\n\t\t\t\tthis.resizeCanceler = false;\n\t\t\t\tthis.snapping = false;\n\t\t\t\tdeferred.resolve();\n\t\t\t\treturn;\n\t\t\t}\n\n\t\t\tif (time < 1) {\n\t\t\t\t\twindow.requestAnimationFrame(tick.bind(this));\n\t\t\t\t\tthis.scrollTo(start + ((destination - start) * time), 0);\n\t\t\t} else {\n\t\t\t\t\tthis.scrollTo(destination, 0);\n\t\t\t\t\tthis.snapping = false;\n\t\t\t\t\tdeferred.resolve();\n\t\t\t}\n\t\t}\n\n\t\ttick.call(this);\n\n\t\treturn deferred.promise;\n\t}\n\n\tscrollTo(left=0, top=0) {\n\t\tif (this.fullsize) {\n\t\t\twindow.scroll(left, top);\n\t\t} else {\n\t\t\tthis.scroller.scrollLeft = left;\n\t\t\tthis.scroller.scrollTop = top;\n\t\t}\n\t}\n\n\tnow() {\n\t\treturn ('now' in window.performance) ? performance.now() : new Date().getTime();\n\t}\n\n\tdestroy() {\n\t\tif (!this.scroller) {\n\t\t\treturn;\n\t\t}\n\n\t\tif (this.fullsize) {\n\t\t\tthis.enableScroll();\n\t\t}\n\n\t\tthis.removeListeners();\n\n\t\tthis.scroller = undefined;\n\t}\n}\n\nEventEmitter(Snap.prototype);\n\nexport default Snap;\n","import {extend, defer, requestAnimationFrame} from \"../../utils/core\";\nimport DefaultViewManager from \"../default\";\nimport Snap from \"../helpers/snap\";\nimport { EVENTS } from \"../../utils/constants\";\nimport debounce from \"lodash/debounce\";\n\nclass ContinuousViewManager extends DefaultViewManager {\n\tconstructor(options) {\n\t\tsuper(options);\n\n\t\tthis.name = \"continuous\";\n\n\t\tthis.settings = extend(this.settings || {}, {\n\t\t\tinfinite: true,\n\t\t\toverflow: undefined,\n\t\t\taxis: undefined,\n\t\t\twritingMode: undefined,\n\t\t\tflow: \"scrolled\",\n\t\t\toffset: 500,\n\t\t\toffsetDelta: 250,\n\t\t\twidth: undefined,\n\t\t\theight: undefined,\n\t\t\tsnap: false,\n\t\t\tafterScrolledTimeout: 10,\n\t\t\tallowScriptedContent: false,\n\t\t\tallowPopups: false\n\t\t});\n\n\t\textend(this.settings, options.settings || {});\n\n\t\t// Gap can be 0, but defaults doesn't handle that\n\t\tif (options.settings.gap != \"undefined\" && options.settings.gap === 0) {\n\t\t\tthis.settings.gap = options.settings.gap;\n\t\t}\n\n\t\tthis.viewSettings = {\n\t\t\tignoreClass: this.settings.ignoreClass,\n\t\t\taxis: this.settings.axis,\n\t\t\tflow: this.settings.flow,\n\t\t\tlayout: this.layout,\n\t\t\twidth: 0,\n\t\t\theight: 0,\n\t\t\tforceEvenPages: false,\n\t\t\tallowScriptedContent: this.settings.allowScriptedContent,\n\t\t\tallowPopups: this.settings.allowPopups\n\t\t};\n\n\t\tthis.scrollTop = 0;\n\t\tthis.scrollLeft = 0;\n\t}\n\n\tdisplay(section, target){\n\t\treturn DefaultViewManager.prototype.display.call(this, section, target)\n\t\t\t.then(function () {\n\t\t\t\treturn this.fill();\n\t\t\t}.bind(this));\n\t}\n\n\tfill(_full){\n\t\tvar full = _full || new defer();\n\n\t\tthis.q.enqueue(() => {\n\t\t\treturn this.check();\n\t\t}).then((result) => {\n\t\t\tif (result) {\n\t\t\t\tthis.fill(full);\n\t\t\t} else {\n\t\t\t\tfull.resolve();\n\t\t\t}\n\t\t});\n\n\t\treturn full.promise;\n\t}\n\n\tmoveTo(offset){\n\t\t// var bounds = this.stage.bounds();\n\t\t// var dist = Math.floor(offset.top / bounds.height) * bounds.height;\n\t\tvar distX = 0,\n\t\t\t\tdistY = 0;\n\n\t\tvar offsetX = 0,\n\t\t\t\toffsetY = 0;\n\n\t\tif(!this.isPaginated) {\n\t\t\tdistY = offset.top;\n\t\t\toffsetY = offset.top+this.settings.offsetDelta;\n\t\t} else {\n\t\t\tdistX = Math.floor(offset.left / this.layout.delta) * this.layout.delta;\n\t\t\toffsetX = distX+this.settings.offsetDelta;\n\t\t}\n\n\t\tif (distX > 0 || distY > 0) {\n\t\t\tthis.scrollBy(distX, distY, true);\n\t\t}\n\t}\n\n\tafterResized(view){\n\t\tthis.emit(EVENTS.MANAGERS.RESIZE, view.section);\n\t}\n\n\t// Remove Previous Listeners if present\n\tremoveShownListeners(view){\n\n\t\t// view.off(\"shown\", this.afterDisplayed);\n\t\t// view.off(\"shown\", this.afterDisplayedAbove);\n\t\tview.onDisplayed = function(){};\n\n\t}\n\n\tadd(section){\n\t\tvar view = this.createView(section);\n\n\t\tthis.views.append(view);\n\n\t\tview.on(EVENTS.VIEWS.RESIZED, (bounds) => {\n\t\t\tview.expanded = true;\n\t\t});\n\n\t\tview.on(EVENTS.VIEWS.AXIS, (axis) => {\n\t\t\tthis.updateAxis(axis);\n\t\t});\n\n\t\tview.on(EVENTS.VIEWS.WRITING_MODE, (mode) => {\n\t\t\tthis.updateWritingMode(mode);\n\t\t});\n\n\t\t// view.on(EVENTS.VIEWS.SHOWN, this.afterDisplayed.bind(this));\n\t\tview.onDisplayed = this.afterDisplayed.bind(this);\n\t\tview.onResize = this.afterResized.bind(this);\n\n\t\treturn view.display(this.request);\n\t}\n\n\tappend(section){\n\t\tvar view = this.createView(section);\n\n\t\tview.on(EVENTS.VIEWS.RESIZED, (bounds) => {\n\t\t\tview.expanded = true;\n\t\t});\n\n\t\tview.on(EVENTS.VIEWS.AXIS, (axis) => {\n\t\t\tthis.updateAxis(axis);\n\t\t});\n\n\t\tview.on(EVENTS.VIEWS.WRITING_MODE, (mode) => {\n\t\t\tthis.updateWritingMode(mode);\n\t\t});\n\n\t\tthis.views.append(view);\n\n\t\tview.onDisplayed = this.afterDisplayed.bind(this);\n\n\t\treturn view;\n\t}\n\n\tprepend(section){\n\t\tvar view = this.createView(section);\n\n\t\tview.on(EVENTS.VIEWS.RESIZED, (bounds) => {\n\t\t\tthis.counter(bounds);\n\t\t\tview.expanded = true;\n\t\t});\n\n\t\tview.on(EVENTS.VIEWS.AXIS, (axis) => {\n\t\t\tthis.updateAxis(axis);\n\t\t});\n\n\t\tview.on(EVENTS.VIEWS.WRITING_MODE, (mode) => {\n\t\t\tthis.updateWritingMode(mode);\n\t\t});\n\n\t\tthis.views.prepend(view);\n\n\t\tview.onDisplayed = this.afterDisplayed.bind(this);\n\n\t\treturn view;\n\t}\n\n\tcounter(bounds){\n\t\tif(this.settings.axis === \"vertical\") {\n\t\t\tthis.scrollBy(0, bounds.heightDelta, true);\n\t\t} else {\n\t\t\tthis.scrollBy(bounds.widthDelta, 0, true);\n\t\t}\n\t}\n\n\tupdate(_offset){\n\t\tvar container = this.bounds();\n\t\tvar views = this.views.all();\n\t\tvar viewsLength = views.length;\n\t\tvar visible = [];\n\t\tvar offset = typeof _offset != \"undefined\" ? _offset : (this.settings.offset || 0);\n\t\tvar isVisible;\n\t\tvar view;\n\n\t\tvar updating = new defer();\n\t\tvar promises = [];\n\t\tfor (var i = 0; i < viewsLength; i++) {\n\t\t\tview = views[i];\n\n\t\t\tisVisible = this.isVisible(view, offset, offset, container);\n\n\t\t\tif(isVisible === true) {\n\t\t\t\t// console.log(\"visible \" + view.index, view.displayed);\n\n\t\t\t\tif (!view.displayed) {\n\t\t\t\t\tlet displayed = view.display(this.request)\n\t\t\t\t\t\t.then(function (view) {\n\t\t\t\t\t\t\tview.show();\n\t\t\t\t\t\t}, (err) => {\n\t\t\t\t\t\t\tview.hide();\n\t\t\t\t\t\t});\n\t\t\t\t\tpromises.push(displayed);\n\t\t\t\t} else {\n\t\t\t\t\tview.show();\n\t\t\t\t}\n\t\t\t\tvisible.push(view);\n\t\t\t} else {\n\t\t\t\tthis.q.enqueue(view.destroy.bind(view));\n\t\t\t\t// console.log(\"hidden \" + view.index, view.displayed);\n\n\t\t\t\tclearTimeout(this.trimTimeout);\n\t\t\t\tthis.trimTimeout = setTimeout(function(){\n\t\t\t\t\tthis.q.enqueue(this.trim.bind(this));\n\t\t\t\t}.bind(this), 250);\n\t\t\t}\n\n\t\t}\n\n\t\tif(promises.length){\n\t\t\treturn Promise.all(promises)\n\t\t\t\t.catch((err) => {\n\t\t\t\t\tupdating.reject(err);\n\t\t\t\t});\n\t\t} else {\n\t\t\tupdating.resolve();\n\t\t\treturn updating.promise;\n\t\t}\n\n\t}\n\n\tcheck(_offsetLeft, _offsetTop){\n\t\tvar checking = new defer();\n\t\tvar newViews = [];\n\n\t\tvar horizontal = (this.settings.axis === \"horizontal\");\n\t\tvar delta = this.settings.offset || 0;\n\n\t\tif (_offsetLeft && horizontal) {\n\t\t\tdelta = _offsetLeft;\n\t\t}\n\n\t\tif (_offsetTop && !horizontal) {\n\t\t\tdelta = _offsetTop;\n\t\t}\n\n\t\tvar bounds = this._bounds; // bounds saved this until resize\n\n\t\tlet offset = horizontal ? this.scrollLeft : this.scrollTop;\n\t\tlet visibleLength = horizontal ? Math.floor(bounds.width) : bounds.height;\n\t\tlet contentLength = horizontal ? this.container.scrollWidth : this.container.scrollHeight;\n\t\tlet writingMode = (this.writingMode && this.writingMode.indexOf(\"vertical\") === 0) ? \"vertical\" : \"horizontal\";\n\t\tlet rtlScrollType = this.settings.rtlScrollType;\n\t\tlet rtl = this.settings.direction === \"rtl\";\n\n\t\tif (!this.settings.fullsize) {\n\t\t\t// Scroll offset starts at width of element\n\t\t\tif (rtl && rtlScrollType === \"default\" && writingMode === \"horizontal\") {\n\t\t\t\toffset = contentLength - visibleLength - offset;\n\t\t\t}\n\t\t\t// Scroll offset starts at 0 and goes negative\n\t\t\tif (rtl && rtlScrollType === \"negative\" && writingMode === \"horizontal\") {\n\t\t\t\toffset = offset * -1;\n\t\t\t}\n\t\t} else {\n\t\t\t// Scroll offset starts at 0 and goes negative\n\t\t\tif ((horizontal && rtl && rtlScrollType === \"negative\") ||\n\t\t\t\t(!horizontal && rtl && rtlScrollType === \"default\")) {\n\t\t\t\toffset = offset * -1;\n\t\t\t}\n\t\t}\n\n\t\tlet prepend = () => {\n\t\t\tlet first = this.views.first();\n\t\t\tlet prev = first && first.section.prev();\n\n\t\t\tif(prev) {\n\t\t\t\tnewViews.push(this.prepend(prev));\n\t\t\t}\n\t\t};\n\n\t\tlet append = () => {\n\t\t\tlet last = this.views.last();\n\t\t\tlet next = last && last.section.next();\n\n\t\t\tif(next) {\n\t\t\t\tnewViews.push(this.append(next));\n\t\t\t}\n\n\t\t};\n\n\t\tlet end = offset + visibleLength + delta;\n\t\tlet start = offset - delta;\n\n\t\tif (end >= contentLength) {\n\t\t\tappend();\n\t\t}\n\t\t\n\t\tif (start < 0) {\n\t\t\tprepend();\n\t\t}\n\t\t\n\n\t\tlet promises = newViews.map((view) => {\n\t\t\treturn view.display(this.request);\n\t\t});\n\n\t\tif(newViews.length){\n\t\t\treturn Promise.all(promises)\n\t\t\t\t.then(() => {\n\t\t\t\t\treturn this.check();\n\t\t\t\t})\n\t\t\t\t.then(() => {\n\t\t\t\t\t// Check to see if anything new is on screen after rendering\n\t\t\t\t\treturn this.update(delta);\n\t\t\t\t}, (err) => {\n\t\t\t\t\treturn err;\n\t\t\t\t});\n\t\t} else {\n\t\t\tthis.q.enqueue(function(){\n\t\t\t\tthis.update();\n\t\t\t}.bind(this));\n\t\t\tchecking.resolve(false);\n\t\t\treturn checking.promise;\n\t\t}\n\n\n\t}\n\n\ttrim(){\n\t\tvar task = new defer();\n\t\tvar displayed = this.views.displayed();\n\t\tvar first = displayed[0];\n\t\tvar last = displayed[displayed.length-1];\n\t\tvar firstIndex = this.views.indexOf(first);\n\t\tvar lastIndex = this.views.indexOf(last);\n\t\tvar above = this.views.slice(0, firstIndex);\n\t\tvar below = this.views.slice(lastIndex+1);\n\n\t\t// Erase all but last above\n\t\tfor (var i = 0; i < above.length-1; i++) {\n\t\t\tthis.erase(above[i], above);\n\t\t}\n\n\t\t// Erase all except first below\n\t\tfor (var j = 1; j < below.length; j++) {\n\t\t\tthis.erase(below[j]);\n\t\t}\n\n\t\ttask.resolve();\n\t\treturn task.promise;\n\t}\n\n\terase(view, above){ //Trim\n\n\t\tvar prevTop;\n\t\tvar prevLeft;\n\n\t\tif(!this.settings.fullsize) {\n\t\t\tprevTop = this.container.scrollTop;\n\t\t\tprevLeft = this.container.scrollLeft;\n\t\t} else {\n\t\t\tprevTop = window.scrollY;\n\t\t\tprevLeft = window.scrollX;\n\t\t}\n\n\t\tvar bounds = view.bounds();\n\n\t\tthis.views.remove(view);\n\t\t\n\t\tif(above) {\n\t\t\tif (this.settings.axis === \"vertical\") {\n\t\t\t\tthis.scrollTo(0, prevTop - bounds.height, true);\n\t\t\t} else {\n\t\t\t\tif(this.settings.direction === 'rtl') {\n\t\t\t\t\tif (!this.settings.fullsize) {\n\t\t\t\t\t\tthis.scrollTo(prevLeft, 0, true);\n\t\t\t\t\t} else {\n\t\t\t\t\t\tthis.scrollTo(prevLeft + Math.floor(bounds.width), 0, true);\n\t\t\t\t\t}\n\t\t\t\t} else {\n\t\t\t\t\tthis.scrollTo(prevLeft - Math.floor(bounds.width), 0, true);\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\n\t}\n\n\taddEventListeners(stage){\n\n\t\twindow.addEventListener(\"unload\", function(e){\n\t\t\tthis.ignore = true;\n\t\t\t// this.scrollTo(0,0);\n\t\t\tthis.destroy();\n\t\t}.bind(this));\n\n\t\tthis.addScrollListeners();\n\n\t\tif (this.isPaginated && this.settings.snap) {\n\t\t\tthis.snapper = new Snap(this, this.settings.snap && (typeof this.settings.snap === \"object\") && this.settings.snap);\n\t\t}\n\t}\n\n\taddScrollListeners() {\n\t\tvar scroller;\n\n\t\tthis.tick = requestAnimationFrame;\n\n\t\tlet dir = this.settings.direction === \"rtl\" && this.settings.rtlScrollType === \"default\" ? -1 : 1;\n\n\t\tthis.scrollDeltaVert = 0;\n\t\tthis.scrollDeltaHorz = 0;\n\n\t\tif(!this.settings.fullsize) {\n\t\t\tscroller = this.container;\n\t\t\tthis.scrollTop = this.container.scrollTop;\n\t\t\tthis.scrollLeft = this.container.scrollLeft;\n\t\t} else {\n\t\t\tscroller = window;\n\t\t\tthis.scrollTop = window.scrollY * dir;\n\t\t\tthis.scrollLeft = window.scrollX * dir;\n\t\t}\n\n\t\tthis._onScroll = this.onScroll.bind(this);\n\t\tscroller.addEventListener(\"scroll\", this._onScroll);\n\t\tthis._scrolled = debounce(this.scrolled.bind(this), 30);\n\t\t// this.tick.call(window, this.onScroll.bind(this));\n\n\t\tthis.didScroll = false;\n\n\t}\n\n\tremoveEventListeners(){\n\t\tvar scroller;\n\n\t\tif(!this.settings.fullsize) {\n\t\t\tscroller = this.container;\n\t\t} else {\n\t\t\tscroller = window;\n\t\t}\n\n\t\tscroller.removeEventListener(\"scroll\", this._onScroll);\n\t\tthis._onScroll = undefined;\n\t}\n\n\tonScroll(){\n\t\tlet scrollTop;\n\t\tlet scrollLeft;\n\t\tlet dir = this.settings.direction === \"rtl\" && this.settings.rtlScrollType === \"default\" ? -1 : 1;\n\n\t\tif(!this.settings.fullsize) {\n\t\t\tscrollTop = this.container.scrollTop;\n\t\t\tscrollLeft = this.container.scrollLeft;\n\t\t} else {\n\t\t\tscrollTop = window.scrollY * dir;\n\t\t\tscrollLeft = window.scrollX * dir;\n\t\t}\n\n\t\tthis.scrollTop = scrollTop;\n\t\tthis.scrollLeft = scrollLeft;\n\n\t\tif(!this.ignore) {\n\n\t\t\tthis._scrolled();\n\n\t\t} else {\n\t\t\tthis.ignore = false;\n\t\t}\n\n\t\tthis.scrollDeltaVert += Math.abs(scrollTop-this.prevScrollTop);\n\t\tthis.scrollDeltaHorz += Math.abs(scrollLeft-this.prevScrollLeft);\n\n\t\tthis.prevScrollTop = scrollTop;\n\t\tthis.prevScrollLeft = scrollLeft;\n\n\t\tclearTimeout(this.scrollTimeout);\n\t\tthis.scrollTimeout = setTimeout(function(){\n\t\t\tthis.scrollDeltaVert = 0;\n\t\t\tthis.scrollDeltaHorz = 0;\n\t\t}.bind(this), 150);\n\n\t\tclearTimeout(this.afterScrolled);\n\n\t\tthis.didScroll = false;\n\n\t}\n\n\tscrolled() {\n\n\t\tthis.q.enqueue(function() {\n\t\t\treturn this.check();\n\t\t}.bind(this));\n\n\t\tthis.emit(EVENTS.MANAGERS.SCROLL, {\n\t\t\ttop: this.scrollTop,\n\t\t\tleft: this.scrollLeft\n\t\t});\n\n\t\tclearTimeout(this.afterScrolled);\n\t\tthis.afterScrolled = setTimeout(function () {\n\n\t\t\t// Don't report scroll if we are about the snap\n\t\t\tif (this.snapper && this.snapper.supportsTouch && this.snapper.needsSnap()) {\n\t\t\t\treturn;\n\t\t\t}\n\n\t\t\tthis.emit(EVENTS.MANAGERS.SCROLLED, {\n\t\t\t\ttop: this.scrollTop,\n\t\t\t\tleft: this.scrollLeft\n\t\t\t});\n\n\t\t}.bind(this), this.settings.afterScrolledTimeout);\n\t}\n\n\tnext(){\n\n\t\tlet delta = this.layout.props.name === \"pre-paginated\" &&\n\t\t\t\t\t\t\t\tthis.layout.props.spread ? this.layout.props.delta * 2 : this.layout.props.delta;\n\n\t\tif(!this.views.length) return;\n\n\t\tif(this.isPaginated && this.settings.axis === \"horizontal\") {\n\n\t\t\tthis.scrollBy(delta, 0, true);\n\n\t\t} else {\n\n\t\t\tthis.scrollBy(0, this.layout.height, true);\n\n\t\t}\n\n\t\tthis.q.enqueue(function() {\n\t\t\treturn this.check();\n\t\t}.bind(this));\n\t}\n\n\tprev(){\n\n\t\tlet delta = this.layout.props.name === \"pre-paginated\" &&\n\t\t\t\t\t\t\t\tthis.layout.props.spread ? this.layout.props.delta * 2 : this.layout.props.delta;\n\n\t\tif(!this.views.length) return;\n\n\t\tif(this.isPaginated && this.settings.axis === \"horizontal\") {\n\n\t\t\tthis.scrollBy(-delta, 0, true);\n\n\t\t} else {\n\n\t\t\tthis.scrollBy(0, -this.layout.height, true);\n\n\t\t}\n\n\t\tthis.q.enqueue(function() {\n\t\t\treturn this.check();\n\t\t}.bind(this));\n\t}\n\n\tupdateFlow(flow){\n\t\tif (this.rendered && this.snapper) {\n\t\t\tthis.snapper.destroy();\n\t\t\tthis.snapper = undefined;\n\t\t}\n\n\t\tsuper.updateFlow(flow, \"scroll\");\n\n\t\tif (this.rendered && this.isPaginated && this.settings.snap) {\n\t\t\tthis.snapper = new Snap(this, this.settings.snap && (typeof this.settings.snap === \"object\") && this.settings.snap);\n\t\t}\n\t}\n\n\tdestroy(){\n\t\tsuper.destroy();\n\n\t\tif (this.snapper) {\n\t\t\tthis.snapper.destroy();\n\t\t}\n\t}\n\n}\n\nexport default ContinuousViewManager;\n","var trimmedEndIndex = require('./_trimmedEndIndex');\n\n/** Used to match leading whitespace. */\nvar reTrimStart = /^\\s+/;\n\n/**\n * The base implementation of `_.trim`.\n *\n * @private\n * @param {string} string The string to trim.\n * @returns {string} Returns the trimmed string.\n */\nfunction baseTrim(string) {\n  return string\n    ? string.slice(0, trimmedEndIndex(string) + 1).replace(reTrimStart, '')\n    : string;\n}\n\nmodule.exports = baseTrim;\n","import {extend, type, findChildren, RangeObject, isNumber} from \"./utils/core\";\n\nconst ELEMENT_NODE = 1;\nconst TEXT_NODE = 3;\nconst COMMENT_NODE = 8;\nconst DOCUMENT_NODE = 9;\n\n/**\n\t* Parsing and creation of EpubCFIs: http://www.idpf.org/epub/linking/cfi/epub-cfi.html\n\n\t* Implements:\n\t* - Character Offset: epubcfi(/6/4[chap01ref]!/4[body01]/10[para05]/2/1:3)\n\t* - Simple Ranges : epubcfi(/6/4[chap01ref]!/4[body01]/10[para05],/2/1:1,/3:4)\n\n\t* Does Not Implement:\n\t* - Temporal Offset (~)\n\t* - Spatial Offset (@)\n\t* - Temporal-Spatial Offset (~ + @)\n\t* - Text Location Assertion ([)\n\t* @class\n\t@param {string | Range | Node } [cfiFrom]\n\t@param {string | object} [base]\n\t@param {string} [ignoreClass] class to ignore when parsing DOM\n*/\nclass EpubCFI {\n\tconstructor(cfiFrom, base, ignoreClass){\n\t\tvar type;\n\n\t\tthis.str = \"\";\n\n\t\tthis.base = {};\n\t\tthis.spinePos = 0; // For compatibility\n\n\t\tthis.range = false; // true || false;\n\n\t\tthis.path = {};\n\t\tthis.start = null;\n\t\tthis.end = null;\n\n\t\t// Allow instantiation without the \"new\" keyword\n\t\tif (!(this instanceof EpubCFI)) {\n\t\t\treturn new EpubCFI(cfiFrom, base, ignoreClass);\n\t\t}\n\n\t\tif(typeof base === \"string\") {\n\t\t\tthis.base = this.parseComponent(base);\n\t\t} else if(typeof base === \"object\" && base.steps) {\n\t\t\tthis.base = base;\n\t\t}\n\n\t\ttype = this.checkType(cfiFrom);\n\n\n\t\tif(type === \"string\") {\n\t\t\tthis.str = cfiFrom;\n\t\t\treturn extend(this, this.parse(cfiFrom));\n\t\t} else if (type === \"range\") {\n\t\t\treturn extend(this, this.fromRange(cfiFrom, this.base, ignoreClass));\n\t\t} else if (type === \"node\") {\n\t\t\treturn extend(this, this.fromNode(cfiFrom, this.base, ignoreClass));\n\t\t} else if (type === \"EpubCFI\" && cfiFrom.path) {\n\t\t\treturn cfiFrom;\n\t\t} else if (!cfiFrom) {\n\t\t\treturn this;\n\t\t} else {\n\t\t\tthrow new TypeError(\"not a valid argument for EpubCFI\");\n\t\t}\n\n\t}\n\n\t/**\n\t * Check the type of constructor input\n\t * @private\n\t */\n\tcheckType(cfi) {\n\n\t\tif (this.isCfiString(cfi)) {\n\t\t\treturn \"string\";\n\t\t// Is a range object\n\t\t} else if (cfi && typeof cfi === \"object\" && (type(cfi) === \"Range\" || typeof(cfi.startContainer) != \"undefined\")){\n\t\t\treturn \"range\";\n\t\t} else if (cfi && typeof cfi === \"object\" && typeof(cfi.nodeType) != \"undefined\" ){ // || typeof cfi === \"function\"\n\t\t\treturn \"node\";\n\t\t} else if (cfi && typeof cfi === \"object\" && cfi instanceof EpubCFI){\n\t\t\treturn \"EpubCFI\";\n\t\t} else {\n\t\t\treturn false;\n\t\t}\n\t}\n\n\t/**\n\t * Parse a cfi string to a CFI object representation\n\t * @param {string} cfiStr\n\t * @returns {object} cfi\n\t */\n\tparse(cfiStr) {\n\t\tvar cfi = {\n\t\t\tspinePos: -1,\n\t\t\trange: false,\n\t\t\tbase: {},\n\t\t\tpath: {},\n\t\t\tstart: null,\n\t\t\tend: null\n\t\t};\n\t\tvar baseComponent, pathComponent, range;\n\n\t\tif(typeof cfiStr !== \"string\") {\n\t\t\treturn {spinePos: -1};\n\t\t}\n\n\t\tif(cfiStr.indexOf(\"epubcfi(\") === 0 && cfiStr[cfiStr.length-1] === \")\") {\n\t\t\t// Remove initial epubcfi( and ending )\n\t\t\tcfiStr = cfiStr.slice(8, cfiStr.length-1);\n\t\t}\n\n\t\tbaseComponent = this.getChapterComponent(cfiStr);\n\n\t\t// Make sure this is a valid cfi or return\n\t\tif(!baseComponent) {\n\t\t\treturn {spinePos: -1};\n\t\t}\n\n\t\tcfi.base = this.parseComponent(baseComponent);\n\n\t\tpathComponent = this.getPathComponent(cfiStr);\n\t\tcfi.path = this.parseComponent(pathComponent);\n\n\t\trange = this.getRange(cfiStr);\n\n\t\tif(range) {\n\t\t\tcfi.range = true;\n\t\t\tcfi.start = this.parseComponent(range[0]);\n\t\t\tcfi.end = this.parseComponent(range[1]);\n\t\t}\n\n\t\t// Get spine node position\n\t\t// cfi.spineSegment = cfi.base.steps[1];\n\n\t\t// Chapter segment is always the second step\n\t\tcfi.spinePos = cfi.base.steps[1].index;\n\n\t\treturn cfi;\n\t}\n\n\tparseComponent(componentStr){\n\t\tvar component = {\n\t\t\tsteps: [],\n\t\t\tterminal: {\n\t\t\t\toffset: null,\n\t\t\t\tassertion: null\n\t\t\t}\n\t\t};\n\t\tvar parts = componentStr.split(\":\");\n\t\tvar steps = parts[0].split(\"/\");\n\t\tvar terminal;\n\n\t\tif(parts.length > 1) {\n\t\t\tterminal = parts[1];\n\t\t\tcomponent.terminal = this.parseTerminal(terminal);\n\t\t}\n\n\t\tif (steps[0] === \"\") {\n\t\t\tsteps.shift(); // Ignore the first slash\n\t\t}\n\n\t\tcomponent.steps = steps.map(function(step){\n\t\t\treturn this.parseStep(step);\n\t\t}.bind(this));\n\n\t\treturn component;\n\t}\n\n\tparseStep(stepStr){\n\t\tvar type, num, index, has_brackets, id;\n\n\t\thas_brackets = stepStr.match(/\\[(.*)\\]/);\n\t\tif(has_brackets && has_brackets[1]){\n\t\t\tid = has_brackets[1];\n\t\t}\n\n\t\t//-- Check if step is a text node or element\n\t\tnum = parseInt(stepStr);\n\n\t\tif(isNaN(num)) {\n\t\t\treturn;\n\t\t}\n\n\t\tif(num % 2 === 0) { // Even = is an element\n\t\t\ttype = \"element\";\n\t\t\tindex = num / 2 - 1;\n\t\t} else {\n\t\t\ttype = \"text\";\n\t\t\tindex = (num - 1 ) / 2;\n\t\t}\n\n\t\treturn {\n\t\t\t\"type\" : type,\n\t\t\t\"index\" : index,\n\t\t\t\"id\" : id || null\n\t\t};\n\t}\n\n\tparseTerminal(termialStr){\n\t\tvar characterOffset, textLocationAssertion;\n\t\tvar assertion = termialStr.match(/\\[(.*)\\]/);\n\n\t\tif(assertion && assertion[1]){\n\t\t\tcharacterOffset = parseInt(termialStr.split(\"[\")[0]);\n\t\t\ttextLocationAssertion = assertion[1];\n\t\t} else {\n\t\t\tcharacterOffset = parseInt(termialStr);\n\t\t}\n\n\t\tif (!isNumber(characterOffset)) {\n\t\t\tcharacterOffset = null;\n\t\t}\n\n\t\treturn {\n\t\t\t\"offset\": characterOffset,\n\t\t\t\"assertion\": textLocationAssertion\n\t\t};\n\n\t}\n\n\tgetChapterComponent(cfiStr) {\n\n\t\tvar indirection = cfiStr.split(\"!\");\n\n\t\treturn indirection[0];\n\t}\n\n\tgetPathComponent(cfiStr) {\n\n\t\tvar indirection = cfiStr.split(\"!\");\n\n\t\tif(indirection[1]) {\n\t\t\tlet ranges = indirection[1].split(\",\");\n\t\t\treturn ranges[0];\n\t\t}\n\n\t}\n\n\tgetRange(cfiStr) {\n\n\t\tvar ranges = cfiStr.split(\",\");\n\n\t\tif(ranges.length === 3){\n\t\t\treturn [\n\t\t\t\tranges[1],\n\t\t\t\tranges[2]\n\t\t\t];\n\t\t}\n\n\t\treturn false;\n\t}\n\n\tgetCharecterOffsetComponent(cfiStr) {\n\t\tvar splitStr = cfiStr.split(\":\");\n\t\treturn splitStr[1] || \"\";\n\t}\n\n\tjoinSteps(steps) {\n\t\tif(!steps) {\n\t\t\treturn \"\";\n\t\t}\n\n\t\treturn steps.map(function(part){\n\t\t\tvar segment = \"\";\n\n\t\t\tif(part.type === \"element\") {\n\t\t\t\tsegment += (part.index + 1) * 2;\n\t\t\t}\n\n\t\t\tif(part.type === \"text\") {\n\t\t\t\tsegment += 1 + (2 * part.index); // TODO: double check that this is odd\n\t\t\t}\n\n\t\t\tif(part.id) {\n\t\t\t\tsegment += \"[\" + part.id + \"]\";\n\t\t\t}\n\n\t\t\treturn segment;\n\n\t\t}).join(\"/\");\n\n\t}\n\n\tsegmentString(segment) {\n\t\tvar segmentString = \"/\";\n\n\t\tsegmentString += this.joinSteps(segment.steps);\n\n\t\tif(segment.terminal && segment.terminal.offset != null){\n\t\t\tsegmentString += \":\" + segment.terminal.offset;\n\t\t}\n\n\t\tif(segment.terminal && segment.terminal.assertion != null){\n\t\t\tsegmentString += \"[\" + segment.terminal.assertion + \"]\";\n\t\t}\n\n\t\treturn segmentString;\n\t}\n\n\t/**\n\t * Convert CFI to a epubcfi(...) string\n\t * @returns {string} epubcfi\n\t */\n\ttoString() {\n\t\tvar cfiString = \"epubcfi(\";\n\n\t\tcfiString += this.segmentString(this.base);\n\n\t\tcfiString += \"!\";\n\t\tcfiString += this.segmentString(this.path);\n\n\t\t// Add Range, if present\n\t\tif(this.range && this.start) {\n\t\t\tcfiString += \",\";\n\t\t\tcfiString += this.segmentString(this.start);\n\t\t}\n\n\t\tif(this.range && this.end) {\n\t\t\tcfiString += \",\";\n\t\t\tcfiString += this.segmentString(this.end);\n\t\t}\n\n\t\tcfiString += \")\";\n\n\t\treturn cfiString;\n\t}\n\n\n\t/**\n\t * Compare which of two CFIs is earlier in the text\n\t * @returns {number} First is earlier = -1, Second is earlier = 1, They are equal = 0\n\t */\n\tcompare(cfiOne, cfiTwo) {\n\t\tvar stepsA, stepsB;\n\t\tvar terminalA, terminalB;\n\n\t\tvar rangeAStartSteps, rangeAEndSteps;\n\t\tvar rangeBEndSteps, rangeBEndSteps;\n\t\tvar rangeAStartTerminal, rangeAEndTerminal;\n\t\tvar rangeBStartTerminal, rangeBEndTerminal;\n\n\t\tif(typeof cfiOne === \"string\") {\n\t\t\tcfiOne = new EpubCFI(cfiOne);\n\t\t}\n\t\tif(typeof cfiTwo === \"string\") {\n\t\t\tcfiTwo = new EpubCFI(cfiTwo);\n\t\t}\n\t\t// Compare Spine Positions\n\t\tif(cfiOne.spinePos > cfiTwo.spinePos) {\n\t\t\treturn 1;\n\t\t}\n\t\tif(cfiOne.spinePos < cfiTwo.spinePos) {\n\t\t\treturn -1;\n\t\t}\n\n\t\tif (cfiOne.range) {\n\t\t\tstepsA = cfiOne.path.steps.concat(cfiOne.start.steps);\n\t\t\tterminalA = cfiOne.start.terminal;\n\t\t} else {\n\t\t\tstepsA = cfiOne.path.steps;\n\t\t\tterminalA = cfiOne.path.terminal;\n\t\t}\n\n\t\tif (cfiTwo.range) {\n\t\t\tstepsB = cfiTwo.path.steps.concat(cfiTwo.start.steps);\n\t\t\tterminalB = cfiTwo.start.terminal;\n\t\t} else {\n\t\t\tstepsB = cfiTwo.path.steps;\n\t\t\tterminalB = cfiTwo.path.terminal;\n\t\t}\n\n\t\t// Compare Each Step in the First item\n\t\tfor (var i = 0; i < stepsA.length; i++) {\n\t\t\tif(!stepsA[i]) {\n\t\t\t\treturn -1;\n\t\t\t}\n\t\t\tif(!stepsB[i]) {\n\t\t\t\treturn 1;\n\t\t\t}\n\t\t\tif(stepsA[i].index > stepsB[i].index) {\n\t\t\t\treturn 1;\n\t\t\t}\n\t\t\tif(stepsA[i].index < stepsB[i].index) {\n\t\t\t\treturn -1;\n\t\t\t}\n\t\t\t// Otherwise continue checking\n\t\t}\n\n\t\t// All steps in First equal to Second and First is Less Specific\n\t\tif(stepsA.length < stepsB.length) {\n\t\t\treturn -1;\n\t\t}\n\n\t\t// Compare the character offset of the text node\n\t\tif(terminalA.offset > terminalB.offset) {\n\t\t\treturn 1;\n\t\t}\n\t\tif(terminalA.offset < terminalB.offset) {\n\t\t\treturn -1;\n\t\t}\n\n\t\t// CFI's are equal\n\t\treturn 0;\n\t}\n\n\tstep(node) {\n\t\tvar nodeType = (node.nodeType === TEXT_NODE) ? \"text\" : \"element\";\n\n\t\treturn {\n\t\t\t\"id\" : node.id,\n\t\t\t\"tagName\" : node.tagName,\n\t\t\t\"type\" : nodeType,\n\t\t\t\"index\" : this.position(node)\n\t\t};\n\t}\n\n\tfilteredStep(node, ignoreClass) {\n\t\tvar filteredNode = this.filter(node, ignoreClass);\n\t\tvar nodeType;\n\n\t\t// Node filtered, so ignore\n\t\tif (!filteredNode) {\n\t\t\treturn;\n\t\t}\n\n\t\t// Otherwise add the filter node in\n\t\tnodeType = (filteredNode.nodeType === TEXT_NODE) ? \"text\" : \"element\";\n\n\t\treturn {\n\t\t\t\"id\" : filteredNode.id,\n\t\t\t\"tagName\" : filteredNode.tagName,\n\t\t\t\"type\" : nodeType,\n\t\t\t\"index\" : this.filteredPosition(filteredNode, ignoreClass)\n\t\t};\n\t}\n\n\tpathTo(node, offset, ignoreClass) {\n\t\tvar segment = {\n\t\t\tsteps: [],\n\t\t\tterminal: {\n\t\t\t\toffset: null,\n\t\t\t\tassertion: null\n\t\t\t}\n\t\t};\n\t\tvar currentNode = node;\n\t\tvar step;\n\n\t\twhile(currentNode && currentNode.parentNode &&\n\t\t\t\t\tcurrentNode.parentNode.nodeType != DOCUMENT_NODE) {\n\n\t\t\tif (ignoreClass) {\n\t\t\t\tstep = this.filteredStep(currentNode, ignoreClass);\n\t\t\t} else {\n\t\t\t\tstep = this.step(currentNode);\n\t\t\t}\n\n\t\t\tif (step) {\n\t\t\t\tsegment.steps.unshift(step);\n\t\t\t}\n\n\t\t\tcurrentNode = currentNode.parentNode;\n\n\t\t}\n\n\t\tif (offset != null && offset >= 0) {\n\n\t\t\tsegment.terminal.offset = offset;\n\n\t\t\t// Make sure we are getting to a textNode if there is an offset\n\t\t\tif(segment.steps[segment.steps.length-1].type != \"text\") {\n\t\t\t\tsegment.steps.push({\n\t\t\t\t\t\"type\" : \"text\",\n\t\t\t\t\t\"index\" : 0\n\t\t\t\t});\n\t\t\t}\n\n\t\t}\n\n\n\t\treturn segment;\n\t}\n\n\tequalStep(stepA, stepB) {\n\t\tif (!stepA || !stepB) {\n\t\t\treturn false;\n\t\t}\n\n\t\tif(stepA.index === stepB.index &&\n\t\t\t stepA.id === stepB.id &&\n\t\t\t stepA.type === stepB.type) {\n\t\t\treturn true;\n\t\t}\n\n\t\treturn false;\n\t}\n\n\t/**\n\t * Create a CFI object from a Range\n\t * @param {Range} range\n\t * @param {string | object} base\n\t * @param {string} [ignoreClass]\n\t * @returns {object} cfi\n\t */\n\tfromRange(range, base, ignoreClass) {\n\t\tvar cfi = {\n\t\t\trange: false,\n\t\t\tbase: {},\n\t\t\tpath: {},\n\t\t\tstart: null,\n\t\t\tend: null\n\t\t};\n\n\t\tvar start = range.startContainer;\n\t\tvar end = range.endContainer;\n\n\t\tvar startOffset = range.startOffset;\n\t\tvar endOffset = range.endOffset;\n\n\t\tvar needsIgnoring = false;\n\n\t\tif (ignoreClass) {\n\t\t\t// Tell pathTo if / what to ignore\n\t\t\tneedsIgnoring = (start.ownerDocument.querySelector(\".\" + ignoreClass) != null);\n\t\t}\n\n\n\t\tif (typeof base === \"string\") {\n\t\t\tcfi.base = this.parseComponent(base);\n\t\t\tcfi.spinePos = cfi.base.steps[1].index;\n\t\t} else if (typeof base === \"object\") {\n\t\t\tcfi.base = base;\n\t\t}\n\n\t\tif (range.collapsed) {\n\t\t\tif (needsIgnoring) {\n\t\t\t\tstartOffset = this.patchOffset(start, startOffset, ignoreClass);\n\t\t\t}\n\t\t\tcfi.path = this.pathTo(start, startOffset, ignoreClass);\n\t\t} else {\n\t\t\tcfi.range = true;\n\n\t\t\tif (needsIgnoring) {\n\t\t\t\tstartOffset = this.patchOffset(start, startOffset, ignoreClass);\n\t\t\t}\n\n\t\t\tcfi.start = this.pathTo(start, startOffset, ignoreClass);\n\t\t\tif (needsIgnoring) {\n\t\t\t\tendOffset = this.patchOffset(end, endOffset, ignoreClass);\n\t\t\t}\n\n\t\t\tcfi.end = this.pathTo(end, endOffset, ignoreClass);\n\n\t\t\t// Create a new empty path\n\t\t\tcfi.path = {\n\t\t\t\tsteps: [],\n\t\t\t\tterminal: null\n\t\t\t};\n\n\t\t\t// Push steps that are shared between start and end to the common path\n\t\t\tvar len = cfi.start.steps.length;\n\t\t\tvar i;\n\n\t\t\tfor (i = 0; i < len; i++) {\n\t\t\t\tif (this.equalStep(cfi.start.steps[i], cfi.end.steps[i])) {\n\t\t\t\t\tif(i === len-1) {\n\t\t\t\t\t\t// Last step is equal, check terminals\n\t\t\t\t\t\tif(cfi.start.terminal === cfi.end.terminal) {\n\t\t\t\t\t\t\t// CFI's are equal\n\t\t\t\t\t\t\tcfi.path.steps.push(cfi.start.steps[i]);\n\t\t\t\t\t\t\t// Not a range\n\t\t\t\t\t\t\tcfi.range = false;\n\t\t\t\t\t\t}\n\t\t\t\t\t} else {\n\t\t\t\t\t\tcfi.path.steps.push(cfi.start.steps[i]);\n\t\t\t\t\t}\n\n\t\t\t\t} else {\n\t\t\t\t\tbreak;\n\t\t\t\t}\n\t\t\t}\n\n\t\t\tcfi.start.steps = cfi.start.steps.slice(cfi.path.steps.length);\n\t\t\tcfi.end.steps = cfi.end.steps.slice(cfi.path.steps.length);\n\n\t\t\t// TODO: Add Sanity check to make sure that the end if greater than the start\n\t\t}\n\n\t\treturn cfi;\n\t}\n\n\t/**\n\t * Create a CFI object from a Node\n\t * @param {Node} anchor\n\t * @param {string | object} base\n\t * @param {string} [ignoreClass]\n\t * @returns {object} cfi\n\t */\n\tfromNode(anchor, base, ignoreClass) {\n\t\tvar cfi = {\n\t\t\trange: false,\n\t\t\tbase: {},\n\t\t\tpath: {},\n\t\t\tstart: null,\n\t\t\tend: null\n\t\t};\n\n\t\tif (typeof base === \"string\") {\n\t\t\tcfi.base = this.parseComponent(base);\n\t\t\tcfi.spinePos = cfi.base.steps[1].index;\n\t\t} else if (typeof base === \"object\") {\n\t\t\tcfi.base = base;\n\t\t}\n\n\t\tcfi.path = this.pathTo(anchor, null, ignoreClass);\n\n\t\treturn cfi;\n\t}\n\n\tfilter(anchor, ignoreClass) {\n\t\tvar needsIgnoring;\n\t\tvar sibling; // to join with\n\t\tvar parent, previousSibling, nextSibling;\n\t\tvar isText = false;\n\n\t\tif (anchor.nodeType === TEXT_NODE) {\n\t\t\tisText = true;\n\t\t\tparent = anchor.parentNode;\n\t\t\tneedsIgnoring = anchor.parentNode.classList.contains(ignoreClass);\n\t\t} else {\n\t\t\tisText = false;\n\t\t\tneedsIgnoring = anchor.classList.contains(ignoreClass);\n\t\t}\n\n\t\tif (needsIgnoring && isText) {\n\t\t\tpreviousSibling = parent.previousSibling;\n\t\t\tnextSibling = parent.nextSibling;\n\n\t\t\t// If the sibling is a text node, join the nodes\n\t\t\tif (previousSibling && previousSibling.nodeType === TEXT_NODE) {\n\t\t\t\tsibling = previousSibling;\n\t\t\t} else if (nextSibling && nextSibling.nodeType === TEXT_NODE) {\n\t\t\t\tsibling = nextSibling;\n\t\t\t}\n\n\t\t\tif (sibling) {\n\t\t\t\treturn sibling;\n\t\t\t} else {\n\t\t\t\t// Parent will be ignored on next step\n\t\t\t\treturn anchor;\n\t\t\t}\n\n\t\t} else if (needsIgnoring && !isText) {\n\t\t\t// Otherwise just skip the element node\n\t\t\treturn false;\n\t\t} else {\n\t\t\t// No need to filter\n\t\t\treturn anchor;\n\t\t}\n\n\t}\n\n\tpatchOffset(anchor, offset, ignoreClass) {\n\t\tif (anchor.nodeType != TEXT_NODE) {\n\t\t\tthrow new Error(\"Anchor must be a text node\");\n\t\t}\n\n\t\tvar curr = anchor;\n\t\tvar totalOffset = offset;\n\n\t\t// If the parent is a ignored node, get offset from it's start\n\t\tif (anchor.parentNode.classList.contains(ignoreClass)) {\n\t\t\tcurr = anchor.parentNode;\n\t\t}\n\n\t\twhile (curr.previousSibling) {\n\t\t\tif(curr.previousSibling.nodeType === ELEMENT_NODE) {\n\t\t\t\t// Originally a text node, so join\n\t\t\t\tif(curr.previousSibling.classList.contains(ignoreClass)){\n\t\t\t\t\ttotalOffset += curr.previousSibling.textContent.length;\n\t\t\t\t} else {\n\t\t\t\t\tbreak; // Normal node, dont join\n\t\t\t\t}\n\t\t\t} else {\n\t\t\t\t// If the previous sibling is a text node, join the nodes\n\t\t\t\ttotalOffset += curr.previousSibling.textContent.length;\n\t\t\t}\n\n\t\t\tcurr = curr.previousSibling;\n\t\t}\n\n\t\treturn totalOffset;\n\n\t}\n\n\tnormalizedMap(children, nodeType, ignoreClass) {\n\t\tvar output = {};\n\t\tvar prevIndex = -1;\n\t\tvar i, len = children.length;\n\t\tvar currNodeType;\n\t\tvar prevNodeType;\n\n\t\tfor (i = 0; i < len; i++) {\n\n\t\t\tcurrNodeType = children[i].nodeType;\n\n\t\t\t// Check if needs ignoring\n\t\t\tif (currNodeType === ELEMENT_NODE &&\n\t\t\t\t\tchildren[i].classList.contains(ignoreClass)) {\n\t\t\t\tcurrNodeType = TEXT_NODE;\n\t\t\t}\n\n\t\t\tif (i > 0 &&\n\t\t\t\t\tcurrNodeType === TEXT_NODE &&\n\t\t\t\t\tprevNodeType === TEXT_NODE) {\n\t\t\t\t// join text nodes\n\t\t\t\toutput[i] = prevIndex;\n\t\t\t} else if (nodeType === currNodeType){\n\t\t\t\tprevIndex = prevIndex + 1;\n\t\t\t\toutput[i] = prevIndex;\n\t\t\t}\n\n\t\t\tprevNodeType = currNodeType;\n\n\t\t}\n\n\t\treturn output;\n\t}\n\n\tposition(anchor) {\n\t\tvar children, index;\n\t\tif (anchor.nodeType === ELEMENT_NODE) {\n\t\t\tchildren = anchor.parentNode.children;\n\t\t\tif (!children) {\n\t\t\t\tchildren = findChildren(anchor.parentNode);\n\t\t\t}\n\t\t\tindex = Array.prototype.indexOf.call(children, anchor);\n\t\t} else {\n\t\t\tchildren = this.textNodes(anchor.parentNode);\n\t\t\tindex = children.indexOf(anchor);\n\t\t}\n\n\t\treturn index;\n\t}\n\n\tfilteredPosition(anchor, ignoreClass) {\n\t\tvar children, index, map;\n\n\t\tif (anchor.nodeType === ELEMENT_NODE) {\n\t\t\tchildren = anchor.parentNode.children;\n\t\t\tmap = this.normalizedMap(children, ELEMENT_NODE, ignoreClass);\n\t\t} else {\n\t\t\tchildren = anchor.parentNode.childNodes;\n\t\t\t// Inside an ignored node\n\t\t\tif(anchor.parentNode.classList.contains(ignoreClass)) {\n\t\t\t\tanchor = anchor.parentNode;\n\t\t\t\tchildren = anchor.parentNode.childNodes;\n\t\t\t}\n\t\t\tmap = this.normalizedMap(children, TEXT_NODE, ignoreClass);\n\t\t}\n\n\n\t\tindex = Array.prototype.indexOf.call(children, anchor);\n\n\t\treturn map[index];\n\t}\n\n\tstepsToXpath(steps) {\n\t\tvar xpath = [\".\", \"*\"];\n\n\t\tsteps.forEach(function(step){\n\t\t\tvar position = step.index + 1;\n\n\t\t\tif(step.id){\n\t\t\t\txpath.push(\"*[position()=\" + position + \" and @id='\" + step.id + \"']\");\n\t\t\t} else if(step.type === \"text\") {\n\t\t\t\txpath.push(\"text()[\" + position + \"]\");\n\t\t\t} else {\n\t\t\t\txpath.push(\"*[\" + position + \"]\");\n\t\t\t}\n\t\t});\n\n\t\treturn xpath.join(\"/\");\n\t}\n\n\n\t/*\n\n\tTo get the last step if needed:\n\n\t// Get the terminal step\n\tlastStep = steps[steps.length-1];\n\t// Get the query string\n\tquery = this.stepsToQuery(steps);\n\t// Find the containing element\n\tstartContainerParent = doc.querySelector(query);\n\t// Find the text node within that element\n\tif(startContainerParent && lastStep.type == \"text\") {\n\t\tcontainer = startContainerParent.childNodes[lastStep.index];\n\t}\n\t*/\n\tstepsToQuerySelector(steps) {\n\t\tvar query = [\"html\"];\n\n\t\tsteps.forEach(function(step){\n\t\t\tvar position = step.index + 1;\n\n\t\t\tif(step.id){\n\t\t\t\tquery.push(\"#\" + step.id);\n\t\t\t} else if(step.type === \"text\") {\n\t\t\t\t// unsupported in querySelector\n\t\t\t\t// query.push(\"text()[\" + position + \"]\");\n\t\t\t} else {\n\t\t\t\tquery.push(\"*:nth-child(\" + position + \")\");\n\t\t\t}\n\t\t});\n\n\t\treturn query.join(\">\");\n\n\t}\n\n\ttextNodes(container, ignoreClass) {\n\t\treturn Array.prototype.slice.call(container.childNodes).\n\t\t\tfilter(function (node) {\n\t\t\t\tif (node.nodeType === TEXT_NODE) {\n\t\t\t\t\treturn true;\n\t\t\t\t} else if (ignoreClass && node.classList.contains(ignoreClass)) {\n\t\t\t\t\treturn true;\n\t\t\t\t}\n\t\t\t\treturn false;\n\t\t\t});\n\t}\n\n\twalkToNode(steps, _doc, ignoreClass) {\n\t\tvar doc = _doc || document;\n\t\tvar container = doc.documentElement;\n\t\tvar children;\n\t\tvar step;\n\t\tvar len = steps.length;\n\t\tvar i;\n\n\t\tfor (i = 0; i < len; i++) {\n\t\t\tstep = steps[i];\n\n\t\t\tif(step.type === \"element\") {\n\t\t\t\t//better to get a container using id as some times step.index may not be correct\n\t\t\t\t//For ex.https://github.com/futurepress/epub.js/issues/561\n\t\t\t\tif(step.id) {\n\t\t\t\t\tcontainer = doc.getElementById(step.id);\n\t\t\t\t}\n\t\t\t\telse {\n\t\t\t\t\tchildren = container.children || findChildren(container);\n\t\t\t\t\tcontainer = children[step.index];\n\t\t\t\t}\n\t\t\t} else if(step.type === \"text\") {\n\t\t\t\tcontainer = this.textNodes(container, ignoreClass)[step.index];\n\t\t\t}\n\t\t\tif(!container) {\n\t\t\t\t//Break the for loop as due to incorrect index we can get error if\n\t\t\t\t//container is undefined so that other functionailties works fine\n\t\t\t\t//like navigation\n\t\t\t\tbreak;\n\t\t\t}\n\n\t\t}\n\n\t\treturn container;\n\t}\n\n\tfindNode(steps, _doc, ignoreClass) {\n\t\tvar doc = _doc || document;\n\t\tvar container;\n\t\tvar xpath;\n\n\t\tif(!ignoreClass && typeof doc.evaluate != \"undefined\") {\n\t\t\txpath = this.stepsToXpath(steps);\n\t\t\tcontainer = doc.evaluate(xpath, doc, null, XPathResult.FIRST_ORDERED_NODE_TYPE, null).singleNodeValue;\n\t\t} else if(ignoreClass) {\n\t\t\tcontainer = this.walkToNode(steps, doc, ignoreClass);\n\t\t} else {\n\t\t\tcontainer = this.walkToNode(steps, doc);\n\t\t}\n\n\t\treturn container;\n\t}\n\n\tfixMiss(steps, offset, _doc, ignoreClass) {\n\t\tvar container = this.findNode(steps.slice(0,-1), _doc, ignoreClass);\n\t\tvar children = container.childNodes;\n\t\tvar map = this.normalizedMap(children, TEXT_NODE, ignoreClass);\n\t\tvar child;\n\t\tvar len;\n\t\tvar lastStepIndex = steps[steps.length-1].index;\n\n\t\tfor (let childIndex in map) {\n\t\t\tif (!map.hasOwnProperty(childIndex)) return;\n\n\t\t\tif(map[childIndex] === lastStepIndex) {\n\t\t\t\tchild = children[childIndex];\n\t\t\t\tlen = child.textContent.length;\n\t\t\t\tif(offset > len) {\n\t\t\t\t\toffset = offset - len;\n\t\t\t\t} else {\n\t\t\t\t\tif (child.nodeType === ELEMENT_NODE) {\n\t\t\t\t\t\tcontainer = child.childNodes[0];\n\t\t\t\t\t} else {\n\t\t\t\t\t\tcontainer = child;\n\t\t\t\t\t}\n\t\t\t\t\tbreak;\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\n\t\treturn {\n\t\t\tcontainer: container,\n\t\t\toffset: offset\n\t\t};\n\n\t}\n\n\t/**\n\t * Creates a DOM range representing a CFI\n\t * @param {document} _doc document referenced in the base\n\t * @param {string} [ignoreClass]\n\t * @return {Range}\n\t */\n\ttoRange(_doc, ignoreClass) {\n\t\tvar doc = _doc || document;\n\t\tvar range;\n\t\tvar start, end, startContainer, endContainer;\n\t\tvar cfi = this;\n\t\tvar startSteps, endSteps;\n\t\tvar needsIgnoring = ignoreClass ? (doc.querySelector(\".\" + ignoreClass) != null) : false;\n\t\tvar missed;\n\n\t\tif (typeof(doc.createRange) !== \"undefined\") {\n\t\t\trange = doc.createRange();\n\t\t} else {\n\t\t\trange = new RangeObject();\n\t\t}\n\n\t\tif (cfi.range) {\n\t\t\tstart = cfi.start;\n\t\t\tstartSteps = cfi.path.steps.concat(start.steps);\n\t\t\tstartContainer = this.findNode(startSteps, doc, needsIgnoring ? ignoreClass : null);\n\t\t\tend = cfi.end;\n\t\t\tendSteps = cfi.path.steps.concat(end.steps);\n\t\t\tendContainer = this.findNode(endSteps, doc, needsIgnoring ? ignoreClass : null);\n\t\t} else {\n\t\t\tstart = cfi.path;\n\t\t\tstartSteps = cfi.path.steps;\n\t\t\tstartContainer = this.findNode(cfi.path.steps, doc, needsIgnoring ? ignoreClass : null);\n\t\t}\n\n\t\tif(startContainer) {\n\t\t\ttry {\n\n\t\t\t\tif(start.terminal.offset != null) {\n\t\t\t\t\trange.setStart(startContainer, start.terminal.offset);\n\t\t\t\t} else {\n\t\t\t\t\trange.setStart(startContainer, 0);\n\t\t\t\t}\n\n\t\t\t} catch (e) {\n\t\t\t\tmissed = this.fixMiss(startSteps, start.terminal.offset, doc, needsIgnoring ? ignoreClass : null);\n\t\t\t\trange.setStart(missed.container, missed.offset);\n\t\t\t}\n\t\t} else {\n\t\t\tconsole.log(\"No startContainer found for\", this.toString());\n\t\t\t// No start found\n\t\t\treturn null;\n\t\t}\n\n\t\tif (endContainer) {\n\t\t\ttry {\n\n\t\t\t\tif(end.terminal.offset != null) {\n\t\t\t\t\trange.setEnd(endContainer, end.terminal.offset);\n\t\t\t\t} else {\n\t\t\t\t\trange.setEnd(endContainer, 0);\n\t\t\t\t}\n\n\t\t\t} catch (e) {\n\t\t\t\tmissed = this.fixMiss(endSteps, cfi.end.terminal.offset, doc, needsIgnoring ? ignoreClass : null);\n\t\t\t\trange.setEnd(missed.container, missed.offset);\n\t\t\t}\n\t\t}\n\n\n\t\t// doc.defaultView.getSelection().addRange(range);\n\t\treturn range;\n\t}\n\n\t/**\n\t * Check if a string is wrapped with \"epubcfi()\"\n\t * @param {string} str\n\t * @returns {boolean}\n\t */\n\tisCfiString(str) {\n\t\tif(typeof str === \"string\" &&\n\t\t\tstr.indexOf(\"epubcfi(\") === 0 &&\n\t\t\tstr[str.length-1] === \")\") {\n\t\t\treturn true;\n\t\t}\n\n\t\treturn false;\n\t}\n\n\tgenerateChapterComponent(_spineNodeIndex, _pos, id) {\n\t\tvar pos = parseInt(_pos),\n\t\t\t\tspineNodeIndex = (_spineNodeIndex + 1) * 2,\n\t\t\t\tcfi = \"/\"+spineNodeIndex+\"/\";\n\n\t\tcfi += (pos + 1) * 2;\n\n\t\tif(id) {\n\t\t\tcfi += \"[\" + id + \"]\";\n\t\t}\n\n\t\treturn cfi;\n\t}\n\n\t/**\n\t * Collapse a CFI Range to a single CFI Position\n\t * @param {boolean} [toStart=false]\n\t */\n\tcollapse(toStart) {\n\t\tif (!this.range) {\n\t\t\treturn;\n\t\t}\n\n\t\tthis.range = false;\n\n\t\tif (toStart) {\n\t\t\tthis.path.steps = this.path.steps.concat(this.start.steps);\n\t\t\tthis.path.terminal = this.start.terminal;\n\t\t} else {\n\t\t\tthis.path.steps = this.path.steps.concat(this.end.steps);\n\t\t\tthis.path.terminal = this.end.terminal;\n\t\t}\n\n\t}\n}\n\nexport default EpubCFI;\n","\"use strict\";\n\nvar isObject = require(\"../object/is\");\n\nmodule.exports = function (value) {\n\tif (!isObject(value)) return false;\n\ttry {\n\t\tif (!value.constructor) return false;\n\t\treturn value.constructor.prototype === value;\n\t} catch (error) {\n\t\treturn false;\n\t}\n};\n","exports.read = function (buffer, offset, isLE, mLen, nBytes) {\n  var e, m\n  var eLen = (nBytes * 8) - mLen - 1\n  var eMax = (1 << eLen) - 1\n  var eBias = eMax >> 1\n  var nBits = -7\n  var i = isLE ? (nBytes - 1) : 0\n  var d = isLE ? -1 : 1\n  var s = buffer[offset + i]\n\n  i += d\n\n  e = s & ((1 << (-nBits)) - 1)\n  s >>= (-nBits)\n  nBits += eLen\n  for (; nBits > 0; e = (e * 256) + buffer[offset + i], i += d, nBits -= 8) {}\n\n  m = e & ((1 << (-nBits)) - 1)\n  e >>= (-nBits)\n  nBits += mLen\n  for (; nBits > 0; m = (m * 256) + buffer[offset + i], i += d, nBits -= 8) {}\n\n  if (e === 0) {\n    e = 1 - eBias\n  } else if (e === eMax) {\n    return m ? NaN : ((s ? -1 : 1) * Infinity)\n  } else {\n    m = m + Math.pow(2, mLen)\n    e = e - eBias\n  }\n  return (s ? -1 : 1) * m * Math.pow(2, e - mLen)\n}\n\nexports.write = function (buffer, value, offset, isLE, mLen, nBytes) {\n  var e, m, c\n  var eLen = (nBytes * 8) - mLen - 1\n  var eMax = (1 << eLen) - 1\n  var eBias = eMax >> 1\n  var rt = (mLen === 23 ? Math.pow(2, -24) - Math.pow(2, -77) : 0)\n  var i = isLE ? 0 : (nBytes - 1)\n  var d = isLE ? 1 : -1\n  var s = value < 0 || (value === 0 && 1 / value < 0) ? 1 : 0\n\n  value = Math.abs(value)\n\n  if (isNaN(value) || value === Infinity) {\n    m = isNaN(value) ? 1 : 0\n    e = eMax\n  } else {\n    e = Math.floor(Math.log(value) / Math.LN2)\n    if (value * (c = Math.pow(2, -e)) < 1) {\n      e--\n      c *= 2\n    }\n    if (e + eBias >= 1) {\n      value += rt / c\n    } else {\n      value += rt * Math.pow(2, 1 - eBias)\n    }\n    if (value * c >= 2) {\n      e++\n      c /= 2\n    }\n\n    if (e + eBias >= eMax) {\n      m = 0\n      e = eMax\n    } else if (e + eBias >= 1) {\n      m = ((value * c) - 1) * Math.pow(2, mLen)\n      e = e + eBias\n    } else {\n      m = value * Math.pow(2, eBias - 1) * Math.pow(2, mLen)\n      e = 0\n    }\n  }\n\n  for (; mLen >= 8; buffer[offset + i] = m & 0xff, i += d, m /= 256, mLen -= 8) {}\n\n  e = (e << mLen) | m\n  eLen += mLen\n  for (; eLen > 0; buffer[offset + i] = e & 0xff, i += d, e /= 256, eLen -= 8) {}\n\n  buffer[offset + i - d] |= s * 128\n}\n","\"use strict\";\n\n// ES3 safe\nvar _undefined = void 0;\n\nmodule.exports = function (value) { return value !== _undefined && value !== null; };\n","import {defer, requestAnimationFrame} from \"./core\";\n\n/**\n * Queue for handling tasks one at a time\n * @class\n * @param {scope} context what this will resolve to in the tasks\n */\nclass Queue {\n\tconstructor(context){\n\t\tthis._q = [];\n\t\tthis.context = context;\n\t\tthis.tick = requestAnimationFrame;\n\t\tthis.running = false;\n\t\tthis.paused = false;\n\t}\n\n\t/**\n\t * Add an item to the queue\n\t * @return {Promise}\n\t */\n\tenqueue() {\n\t\tvar deferred, promise;\n\t\tvar queued;\n\t\tvar task = [].shift.call(arguments);\n\t\tvar args = arguments;\n\n\t\t// Handle single args without context\n\t\t// if(args && !Array.isArray(args)) {\n\t\t//   args = [args];\n\t\t// }\n\t\tif(!task) {\n\t\t\tthrow new Error(\"No Task Provided\");\n\t\t}\n\n\t\tif(typeof task === \"function\"){\n\n\t\t\tdeferred = new defer();\n\t\t\tpromise = deferred.promise;\n\n\t\t\tqueued = {\n\t\t\t\t\"task\" : task,\n\t\t\t\t\"args\"     : args,\n\t\t\t\t//\"context\"  : context,\n\t\t\t\t\"deferred\" : deferred,\n\t\t\t\t\"promise\" : promise\n\t\t\t};\n\n\t\t} else {\n\t\t\t// Task is a promise\n\t\t\tqueued = {\n\t\t\t\t\"promise\" : task\n\t\t\t};\n\n\t\t}\n\n\t\tthis._q.push(queued);\n\n\t\t// Wait to start queue flush\n\t\tif (this.paused == false && !this.running) {\n\t\t\t// setTimeout(this.flush.bind(this), 0);\n\t\t\t// this.tick.call(window, this.run.bind(this));\n\t\t\tthis.run();\n\t\t}\n\n\t\treturn queued.promise;\n\t}\n\n\t/**\n\t * Run one item\n\t * @return {Promise}\n\t */\n\tdequeue(){\n\t\tvar inwait, task, result;\n\n\t\tif(this._q.length && !this.paused) {\n\t\t\tinwait = this._q.shift();\n\t\t\ttask = inwait.task;\n\t\t\tif(task){\n\t\t\t\t// console.log(task)\n\n\t\t\t\tresult = task.apply(this.context, inwait.args);\n\n\t\t\t\tif(result && typeof result[\"then\"] === \"function\") {\n\t\t\t\t\t// Task is a function that returns a promise\n\t\t\t\t\treturn result.then(function(){\n\t\t\t\t\t\tinwait.deferred.resolve.apply(this.context, arguments);\n\t\t\t\t\t}.bind(this), function() {\n\t\t\t\t\t\tinwait.deferred.reject.apply(this.context, arguments);\n\t\t\t\t\t}.bind(this));\n\t\t\t\t} else {\n\t\t\t\t\t// Task resolves immediately\n\t\t\t\t\tinwait.deferred.resolve.apply(this.context, result);\n\t\t\t\t\treturn inwait.promise;\n\t\t\t\t}\n\n\n\n\t\t\t} else if(inwait.promise) {\n\t\t\t\t// Task is a promise\n\t\t\t\treturn inwait.promise;\n\t\t\t}\n\n\t\t} else {\n\t\t\tinwait = new defer();\n\t\t\tinwait.deferred.resolve();\n\t\t\treturn inwait.promise;\n\t\t}\n\n\t}\n\n\t// Run All Immediately\n\tdump(){\n\t\twhile(this._q.length) {\n\t\t\tthis.dequeue();\n\t\t}\n\t}\n\n\t/**\n\t * Run all tasks sequentially, at convince\n\t * @return {Promise}\n\t */\n\trun(){\n\n\t\tif(!this.running){\n\t\t\tthis.running = true;\n\t\t\tthis.defered = new defer();\n\t\t}\n\n\t\tthis.tick.call(window, () => {\n\n\t\t\tif(this._q.length) {\n\n\t\t\t\tthis.dequeue()\n\t\t\t\t\t.then(function(){\n\t\t\t\t\t\tthis.run();\n\t\t\t\t\t}.bind(this));\n\n\t\t\t} else {\n\t\t\t\tthis.defered.resolve();\n\t\t\t\tthis.running = undefined;\n\t\t\t}\n\n\t\t});\n\n\t\t// Unpause\n\t\tif(this.paused == true) {\n\t\t\tthis.paused = false;\n\t\t}\n\n\t\treturn this.defered.promise;\n\t}\n\n\t/**\n\t * Flush all, as quickly as possible\n\t * @return {Promise}\n\t */\n\tflush(){\n\n\t\tif(this.running){\n\t\t\treturn this.running;\n\t\t}\n\n\t\tif(this._q.length) {\n\t\t\tthis.running = this.dequeue()\n\t\t\t\t.then(function(){\n\t\t\t\t\tthis.running = undefined;\n\t\t\t\t\treturn this.flush();\n\t\t\t\t}.bind(this));\n\n\t\t\treturn this.running;\n\t\t}\n\n\t}\n\n\t/**\n\t * Clear all items in wait\n\t */\n\tclear(){\n\t\tthis._q = [];\n\t}\n\n\t/**\n\t * Get the number of tasks in the queue\n\t * @return {number} tasks\n\t */\n\tlength(){\n\t\treturn this._q.length;\n\t}\n\n\t/**\n\t * Pause a running queue\n\t */\n\tpause(){\n\t\tthis.paused = true;\n\t}\n\n\t/**\n\t * End the queue\n\t */\n\tstop(){\n\t\tthis._q = [];\n\t\tthis.running = false;\n\t\tthis.paused = true;\n\t}\n}\n\n\n/**\n * Create a new task from a callback\n * @class\n * @private\n * @param {function} task\n * @param {array} args\n * @param {scope} context\n * @return {function} task\n */\nclass Task {\n\tconstructor(task, args, context){\n\n\t\treturn function(){\n\t\t\tvar toApply = arguments || [];\n\n\t\t\treturn new Promise( (resolve, reject) => {\n\t\t\t\tvar callback = function(value, err){\n\t\t\t\t\tif (!value && err) {\n\t\t\t\t\t\treject(err);\n\t\t\t\t\t} else {\n\t\t\t\t\t\tresolve(value);\n\t\t\t\t\t}\n\t\t\t\t};\n\t\t\t\t// Add the callback to the arguments list\n\t\t\t\ttoApply.push(callback);\n\n\t\t\t\t// Apply all arguments to the functions\n\t\t\t\ttask.apply(context || this, toApply);\n\n\t\t\t});\n\n\t\t};\n\n\t}\n}\n\n\nexport default Queue;\nexport { Task };\n","\"use strict\";\n\nvar isValue = require(\"./is-value\");\n\nmodule.exports = function (value) {\n\tif (!isValue(value)) throw new TypeError(\"Cannot use null or undefined\");\n\treturn value;\n};\n","import Url from \"./utils/url\";\n\n/**\n * Themes to apply to displayed content\n * @class\n * @param {Rendition} rendition\n */\nclass Themes {\n\tconstructor(rendition) {\n\t\tthis.rendition = rendition;\n\t\tthis._themes = {\n\t\t\t\"default\" : {\n\t\t\t\t\"rules\" : {},\n\t\t\t\t\"url\" : \"\",\n\t\t\t\t\"serialized\" : \"\"\n\t\t\t}\n\t\t};\n\t\tthis._overrides = {};\n\t\tthis._current = \"default\";\n\t\tthis._injected = [];\n\t\tthis.rendition.hooks.content.register(this.inject.bind(this));\n\t\tthis.rendition.hooks.content.register(this.overrides.bind(this));\n\n\t}\n\n\t/**\n\t * Add themes to be used by a rendition\n\t * @param {object | Array<object> | string}\n\t * @example themes.register(\"light\", \"http://example.com/light.css\")\n\t * @example themes.register(\"light\", { \"body\": { \"color\": \"purple\"}})\n\t * @example themes.register({ \"light\" : {...}, \"dark\" : {...}})\n\t */\n\tregister () {\n\t\tif (arguments.length === 0) {\n\t\t\treturn;\n\t\t}\n\t\tif (arguments.length === 1 && typeof(arguments[0]) === \"object\") {\n\t\t\treturn this.registerThemes(arguments[0]);\n\t\t}\n\t\tif (arguments.length === 1 && typeof(arguments[0]) === \"string\") {\n\t\t\treturn this.default(arguments[0]);\n\t\t}\n\t\tif (arguments.length === 2 && typeof(arguments[1]) === \"string\") {\n\t\t\treturn this.registerUrl(arguments[0], arguments[1]);\n\t\t}\n\t\tif (arguments.length === 2 && typeof(arguments[1]) === \"object\") {\n\t\t\treturn this.registerRules(arguments[0], arguments[1]);\n\t\t}\n\t}\n\n\t/**\n\t * Add a default theme to be used by a rendition\n\t * @param {object | string} theme\n\t * @example themes.register(\"http://example.com/default.css\")\n\t * @example themes.register({ \"body\": { \"color\": \"purple\"}})\n\t */\n\tdefault (theme) {\n\t\tif (!theme) {\n\t\t\treturn;\n\t\t}\n\t\tif (typeof(theme) === \"string\") {\n\t\t\treturn this.registerUrl(\"default\", theme);\n\t\t}\n\t\tif (typeof(theme) === \"object\") {\n\t\t\treturn this.registerRules(\"default\", theme);\n\t\t}\n\t}\n\n\t/**\n\t * Register themes object\n\t * @param {object} themes\n\t */\n\tregisterThemes (themes) {\n\t\tfor (var theme in themes) {\n\t\t\tif (themes.hasOwnProperty(theme)) {\n\t\t\t\tif (typeof(themes[theme]) === \"string\") {\n\t\t\t\t\tthis.registerUrl(theme, themes[theme]);\n\t\t\t\t} else {\n\t\t\t\t\tthis.registerRules(theme, themes[theme]);\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\t}\n\n\t/**\n\t * Register a theme by passing its css as string\n\t * @param {string} name \n\t * @param {string} css \n\t */\n\tregisterCss (name, css) {\n\t\tthis._themes[name] = { \"serialized\" : css };\n\t\tif (this._injected[name] || name == 'default') {\n\t\t\tthis.update(name);\n\t\t}\n\t}\n\n\t/**\n\t * Register a url\n\t * @param {string} name\n\t * @param {string} input\n\t */\n\tregisterUrl (name, input) {\n\t\tvar url = new Url(input);\n\t\tthis._themes[name] = { \"url\": url.toString() };\n\t\tif (this._injected[name] || name == 'default') {\n\t\t\tthis.update(name);\n\t\t}\n\t}\n\n\t/**\n\t * Register rule\n\t * @param {string} name\n\t * @param {object} rules\n\t */\n\tregisterRules (name, rules) {\n\t\tthis._themes[name] = { \"rules\": rules };\n\t\t// TODO: serialize css rules\n\t\tif (this._injected[name] || name == 'default') {\n\t\t\tthis.update(name);\n\t\t}\n\t}\n\n\t/**\n\t * Select a theme\n\t * @param {string} name\n\t */\n\tselect (name) {\n\t\tvar prev = this._current;\n\t\tvar contents;\n\n\t\tthis._current = name;\n\t\tthis.update(name);\n\n\t\tcontents = this.rendition.getContents();\n\t\tcontents.forEach( (content) => {\n\t\t\tcontent.removeClass(prev);\n\t\t\tcontent.addClass(name);\n\t\t});\n\t}\n\n\t/**\n\t * Update a theme\n\t * @param {string} name\n\t */\n\tupdate (name) {\n\t\tvar contents = this.rendition.getContents();\n\t\tcontents.forEach( (content) => {\n\t\t\tthis.add(name, content);\n\t\t});\n\t}\n\n\t/**\n\t * Inject all themes into contents\n\t * @param {Contents} contents\n\t */\n\tinject (contents) {\n\t\tvar links = [];\n\t\tvar themes = this._themes;\n\t\tvar theme;\n\n\t\tfor (var name in themes) {\n\t\t\tif (themes.hasOwnProperty(name) && (name === this._current || name === \"default\")) {\n\t\t\t\ttheme = themes[name];\n\t\t\t\tif((theme.rules && Object.keys(theme.rules).length > 0) || (theme.url && links.indexOf(theme.url) === -1)) {\n\t\t\t\t\tthis.add(name, contents);\n\t\t\t\t}\n\t\t\t\tthis._injected.push(name);\n\t\t\t}\n\t\t}\n\n\t\tif(this._current != \"default\") {\n\t\t\tcontents.addClass(this._current);\n\t\t}\n\t}\n\n\t/**\n\t * Add Theme to contents\n\t * @param {string} name\n\t * @param {Contents} contents\n\t */\n\tadd (name, contents) {\n\t\tvar theme = this._themes[name];\n\n\t\tif (!theme || !contents) {\n\t\t\treturn;\n\t\t}\n\n\t\tif (theme.url) {\n\t\t\tcontents.addStylesheet(theme.url);\n\t\t} else if (theme.serialized) {\n\t\t\tcontents.addStylesheetCss(theme.serialized, name);\n\t\t\ttheme.injected = true;\n\t\t} else if (theme.rules) {\n\t\t\tcontents.addStylesheetRules(theme.rules, name);\n\t\t\ttheme.injected = true;\n\t\t}\n\t}\n\n\t/**\n\t * Add override\n\t * @param {string} name\n\t * @param {string} value\n\t * @param {boolean} priority\n\t */\n\toverride (name, value, priority) {\n\t\tvar contents = this.rendition.getContents();\n\n\t\tthis._overrides[name] = {\n\t\t\tvalue: value,\n\t\t\tpriority: priority === true\n\t\t};\n\n\t\tcontents.forEach( (content) => {\n\t\t\tcontent.css(name, this._overrides[name].value, this._overrides[name].priority);\n\t\t});\n\t}\n\n\tremoveOverride (name) {\n\t\tvar contents = this.rendition.getContents();\n\n\t\tdelete this._overrides[name];\n\n\t\tcontents.forEach( (content) => {\n\t\t\tcontent.css(name);\n\t\t});\n\t}\n\n\t/**\n\t * Add all overrides\n\t * @param {Content} content\n\t */\n\toverrides (contents) {\n\t\tvar overrides = this._overrides;\n\n\t\tfor (var rule in overrides) {\n\t\t\tif (overrides.hasOwnProperty(rule)) {\n\t\t\t\tcontents.css(rule, overrides[rule].value, overrides[rule].priority);\n\t\t\t}\n\t\t}\n\t}\n\n\t/**\n\t * Adjust the font size of a rendition\n\t * @param {number} size\n\t */\n\tfontSize (size) {\n\t\tthis.override(\"font-size\", size);\n\t}\n\n\t/**\n\t * Adjust the font-family of a rendition\n\t * @param {string} f\n\t */\n\tfont (f) {\n\t\tthis.override(\"font-family\", f, true);\n\t}\n\n\tdestroy() {\n\t\tthis.rendition = undefined;\n\t\tthis._themes = undefined;\n\t\tthis._overrides = undefined;\n\t\tthis._current = undefined;\n\t\tthis._injected = undefined;\n\t}\n\n}\n\nexport default Themes;\n","import EventEmitter from \"event-emitter\";\nimport EpubCFI from \"./epubcfi\";\nimport { EVENTS } from \"./utils/constants\";\n\n/**\n\t* Handles managing adding & removing Annotations\n\t* @param {Rendition} rendition\n\t* @class\n\t*/\nclass Annotations {\n\n\tconstructor (rendition) {\n\t\tthis.rendition = rendition;\n\t\tthis.highlights = [];\n\t\tthis.underlines = [];\n\t\tthis.marks = [];\n\t\tthis._annotations = {};\n\t\tthis._annotationsBySectionIndex = {};\n\n\t\tthis.rendition.hooks.render.register(this.inject.bind(this));\n\t\tthis.rendition.hooks.unloaded.register(this.clear.bind(this));\n\t}\n\n\t/**\n\t * Add an annotation to store\n\t * @param {string} type Type of annotation to add: \"highlight\", \"underline\", \"mark\"\n\t * @param {EpubCFI} cfiRange EpubCFI range to attach annotation to\n\t * @param {object} data Data to assign to annotation\n\t * @param {function} [cb] Callback after annotation is added\n\t * @param {string} className CSS class to assign to annotation\n\t * @param {object} styles CSS styles to assign to annotation\n\t * @returns {Annotation} annotation\n\t */\n\tadd (type, cfiRange, data, cb, className, styles) {\n\t\tlet hash = encodeURI(cfiRange + type);\n\t\tlet cfi = new EpubCFI(cfiRange);\n\t\tlet sectionIndex = cfi.spinePos;\n\t\tlet annotation = new Annotation({\n\t\t\ttype,\n\t\t\tcfiRange,\n\t\t\tdata,\n\t\t\tsectionIndex,\n\t\t\tcb,\n\t\t\tclassName,\n\t\t\tstyles\n\t\t});\n\n\t\tthis._annotations[hash] = annotation;\n\n\t\tif (sectionIndex in this._annotationsBySectionIndex) {\n\t\t\tthis._annotationsBySectionIndex[sectionIndex].push(hash);\n\t\t} else {\n\t\t\tthis._annotationsBySectionIndex[sectionIndex] = [hash];\n\t\t}\n\n\t\tlet views = this.rendition.views();\n\n\t\tviews.forEach( (view) => {\n\t\t\tif (annotation.sectionIndex === view.index) {\n\t\t\t\tannotation.attach(view);\n\t\t\t}\n\t\t});\n\n\t\treturn annotation;\n\t}\n\n\t/**\n\t * Remove an annotation from store\n\t * @param {EpubCFI} cfiRange EpubCFI range the annotation is attached to\n\t * @param {string} type Type of annotation to add: \"highlight\", \"underline\", \"mark\"\n\t */\n\tremove (cfiRange, type) {\n\t\tlet hash = encodeURI(cfiRange + type);\n\n\t\tif (hash in this._annotations) {\n\t\t\tlet annotation = this._annotations[hash];\n\n\t\t\tif (type && annotation.type !== type) {\n\t\t\t\treturn;\n\t\t\t}\n\n\t\t\tlet views = this.rendition.views();\n\t\t\tviews.forEach( (view) => {\n\t\t\t\tthis._removeFromAnnotationBySectionIndex(annotation.sectionIndex, hash);\n\t\t\t\tif (annotation.sectionIndex === view.index) {\n\t\t\t\t\tannotation.detach(view);\n\t\t\t\t}\n\t\t\t});\n\n\t\t\tdelete this._annotations[hash];\n\t\t}\n\t}\n\n\t/**\n\t * Remove an annotations by Section Index\n\t * @private\n\t */\n\t_removeFromAnnotationBySectionIndex (sectionIndex, hash) {\n\t\tthis._annotationsBySectionIndex[sectionIndex] = this._annotationsAt(sectionIndex).filter(h => h !== hash);\n\t}\n\n\t/**\n\t * Get annotations by Section Index\n\t * @private\n\t */\n\t_annotationsAt (index) {\n\t\treturn this._annotationsBySectionIndex[index];\n\t}\n\n\n\t/**\n\t * Add a highlight to the store\n\t * @param {EpubCFI} cfiRange EpubCFI range to attach annotation to\n\t * @param {object} data Data to assign to annotation\n\t * @param {function} cb Callback after annotation is clicked\n\t * @param {string} className CSS class to assign to annotation\n\t * @param {object} styles CSS styles to assign to annotation\n\t */\n\thighlight (cfiRange, data, cb, className, styles) {\n\t\treturn this.add(\"highlight\", cfiRange, data, cb, className, styles);\n\t}\n\n\t/**\n\t * Add a underline to the store\n\t * @param {EpubCFI} cfiRange EpubCFI range to attach annotation to\n\t * @param {object} data Data to assign to annotation\n\t * @param {function} cb Callback after annotation is clicked\n\t * @param {string} className CSS class to assign to annotation\n\t * @param {object} styles CSS styles to assign to annotation\n\t */\n\tunderline (cfiRange, data, cb, className, styles) {\n\t\treturn this.add(\"underline\", cfiRange, data, cb, className, styles);\n\t}\n\n\t/**\n\t * Add a mark to the store\n\t * @param {EpubCFI} cfiRange EpubCFI range to attach annotation to\n\t * @param {object} data Data to assign to annotation\n\t * @param {function} cb Callback after annotation is clicked\n\t */\n\tmark (cfiRange, data, cb) {\n\t\treturn this.add(\"mark\", cfiRange, data, cb);\n\t}\n\n\t/**\n\t * iterate over annotations in the store\n\t */\n\teach () {\n\t\treturn this._annotations.forEach.apply(this._annotations, arguments);\n\t}\n\n\t/**\n\t * Hook for injecting annotation into a view\n\t * @param {View} view\n\t * @private\n\t */\n\tinject (view) {\n\t\tlet sectionIndex = view.index;\n\t\tif (sectionIndex in this._annotationsBySectionIndex) {\n\t\t\tlet annotations = this._annotationsBySectionIndex[sectionIndex];\n\t\t\tannotations.forEach((hash) => {\n\t\t\t\tlet annotation = this._annotations[hash];\n\t\t\t\tannotation.attach(view);\n\t\t\t});\n\t\t}\n\t}\n\n\t/**\n\t * Hook for removing annotation from a view\n\t * @param {View} view\n\t * @private\n\t */\n\tclear (view) {\n\t\tlet sectionIndex = view.index;\n\t\tif (sectionIndex in this._annotationsBySectionIndex) {\n\t\t\tlet annotations = this._annotationsBySectionIndex[sectionIndex];\n\t\t\tannotations.forEach((hash) => {\n\t\t\t\tlet annotation = this._annotations[hash];\n\t\t\t\tannotation.detach(view);\n\t\t\t});\n\t\t}\n\t}\n\n\t/**\n\t * [Not Implemented] Show annotations\n\t * @TODO: needs implementation in View\n\t */\n\tshow () {\n\n\t}\n\n\t/**\n\t * [Not Implemented] Hide annotations\n\t * @TODO: needs implementation in View\n\t */\n\thide () {\n\n\t}\n\n}\n\n/**\n * Annotation object\n * @class\n * @param {object} options\n * @param {string} options.type Type of annotation to add: \"highlight\", \"underline\", \"mark\"\n * @param {EpubCFI} options.cfiRange EpubCFI range to attach annotation to\n * @param {object} options.data Data to assign to annotation\n * @param {int} options.sectionIndex Index in the Spine of the Section annotation belongs to\n * @param {function} [options.cb] Callback after annotation is clicked\n * @param {string} className CSS class to assign to annotation\n * @param {object} styles CSS styles to assign to annotation\n * @returns {Annotation} annotation\n */\nclass Annotation {\n\n\tconstructor ({\n\t\ttype,\n\t\tcfiRange,\n\t\tdata,\n\t\tsectionIndex,\n\t\tcb,\n\t\tclassName,\n\t\tstyles\n\t}) {\n\t\tthis.type = type;\n\t\tthis.cfiRange = cfiRange;\n\t\tthis.data = data;\n\t\tthis.sectionIndex = sectionIndex;\n\t\tthis.mark = undefined;\n\t\tthis.cb = cb;\n\t\tthis.className = className;\n\t\tthis.styles = styles;\n\t}\n\n\t/**\n\t * Update stored data\n\t * @param {object} data\n\t */\n\tupdate (data) {\n\t\tthis.data = data;\n\t}\n\n\t/**\n\t * Add to a view\n\t * @param {View} view\n\t */\n\tattach (view) {\n\t\tlet {cfiRange, data, type, mark, cb, className, styles} = this;\n\t\tlet result;\n\n\t\tif (type === \"highlight\") {\n\t\t\tresult = view.highlight(cfiRange, data, cb, className, styles);\n\t\t} else if (type === \"underline\") {\n\t\t\tresult = view.underline(cfiRange, data, cb, className, styles);\n\t\t} else if (type === \"mark\") {\n\t\t\tresult = view.mark(cfiRange, data, cb);\n\t\t}\n\n\t\tthis.mark = result;\n\t\tthis.emit(EVENTS.ANNOTATION.ATTACH, result);\n\t\treturn result;\n\t}\n\n\t/**\n\t * Remove from a view\n\t * @param {View} view\n\t */\n\tdetach (view) {\n\t\tlet {cfiRange, type} = this;\n\t\tlet result;\n\n\t\tif (view) {\n\t\t\tif (type === \"highlight\") {\n\t\t\t\tresult = view.unhighlight(cfiRange);\n\t\t\t} else if (type === \"underline\") {\n\t\t\t\tresult = view.ununderline(cfiRange);\n\t\t\t} else if (type === \"mark\") {\n\t\t\t\tresult = view.unmark(cfiRange);\n\t\t\t}\n\t\t}\n\n\t\tthis.mark = undefined;\n\t\tthis.emit(EVENTS.ANNOTATION.DETACH, result);\n\t\treturn result;\n\t}\n\n\t/**\n\t * [Not Implemented] Get text of an annotation\n\t * @TODO: needs implementation in contents\n\t */\n\ttext () {\n\n\t}\n\n}\n\nEventEmitter(Annotation.prototype);\n\n\nexport default Annotations\n","import EventEmitter from \"event-emitter\";\nimport { extend, defer, isFloat } from \"./utils/core\";\nimport Hook from \"./utils/hook\";\nimport EpubCFI from \"./epubcfi\";\nimport Queue from \"./utils/queue\";\nimport Layout from \"./layout\";\n// import Mapping from \"./mapping\";\nimport Themes from \"./themes\";\nimport Contents from \"./contents\";\nimport Annotations from \"./annotations\";\nimport { EVENTS, DOM_EVENTS } from \"./utils/constants\";\n\n// Default Views\nimport IframeView from \"./managers/views/iframe\";\n\n// Default View Managers\nimport DefaultViewManager from \"./managers/default/index\";\nimport ContinuousViewManager from \"./managers/continuous/index\";\n\n/**\n * Displays an Epub as a series of Views for each Section.\n * Requires Manager and View class to handle specifics of rendering\n * the section content.\n * @class\n * @param {Book} book\n * @param {object} [options]\n * @param {number} [options.width]\n * @param {number} [options.height]\n * @param {string} [options.ignoreClass] class for the cfi parser to ignore\n * @param {string | function | object} [options.manager='default']\n * @param {string | function} [options.view='iframe']\n * @param {string} [options.layout] layout to force\n * @param {string} [options.spread] force spread value\n * @param {number} [options.minSpreadWidth] overridden by spread: none (never) / both (always)\n * @param {string} [options.stylesheet] url of stylesheet to be injected\n * @param {boolean} [options.resizeOnOrientationChange] false to disable orientation events\n * @param {string} [options.script] url of script to be injected\n * @param {boolean | object} [options.snap=false] use snap scrolling\n * @param {string} [options.defaultDirection='ltr'] default text direction\n * @param {boolean} [options.allowScriptedContent=false] enable running scripts in content\n * @param {boolean} [options.allowPopups=false] enable opening popup in content\n */\nclass Rendition {\n\tconstructor(book, options) {\n\n\t\tthis.settings = extend(this.settings || {}, {\n\t\t\twidth: null,\n\t\t\theight: null,\n\t\t\tignoreClass: \"\",\n\t\t\tmanager: \"default\",\n\t\t\tview: \"iframe\",\n\t\t\tflow: null,\n\t\t\tlayout: null,\n\t\t\tspread: null,\n\t\t\tminSpreadWidth: 800,\n\t\t\tstylesheet: null,\n\t\t\tresizeOnOrientationChange: true,\n\t\t\tscript: null,\n\t\t\tsnap: false,\n\t\t\tdefaultDirection: \"ltr\",\n\t\t\tallowScriptedContent: false,\n\t\t\tallowPopups: false\n\t\t});\n\n\t\textend(this.settings, options);\n\n\t\tif (typeof(this.settings.manager) === \"object\") {\n\t\t\tthis.manager = this.settings.manager;\n\t\t}\n\n\t\tthis.book = book;\n\n\t\t/**\n\t\t * Adds Hook methods to the Rendition prototype\n\t\t * @member {object} hooks\n\t\t * @property {Hook} hooks.content\n\t\t * @memberof Rendition\n\t\t */\n\t\tthis.hooks = {};\n\t\tthis.hooks.display = new Hook(this);\n\t\tthis.hooks.serialize = new Hook(this);\n\t\tthis.hooks.content = new Hook(this);\n\t\tthis.hooks.unloaded = new Hook(this);\n\t\tthis.hooks.layout = new Hook(this);\n\t\tthis.hooks.render = new Hook(this);\n\t\tthis.hooks.show = new Hook(this);\n\n\t\tthis.hooks.content.register(this.handleLinks.bind(this));\n\t\tthis.hooks.content.register(this.passEvents.bind(this));\n\t\tthis.hooks.content.register(this.adjustImages.bind(this));\n\n\t\tthis.book.spine.hooks.content.register(this.injectIdentifier.bind(this));\n\n\t\tif (this.settings.stylesheet) {\n\t\t\tthis.book.spine.hooks.content.register(this.injectStylesheet.bind(this));\n\t\t}\n\n\t\tif (this.settings.script) {\n\t\t\tthis.book.spine.hooks.content.register(this.injectScript.bind(this));\n\t\t}\n\n\t\t/**\n\t\t * @member {Themes} themes\n\t\t * @memberof Rendition\n\t\t */\n\t\tthis.themes = new Themes(this);\n\n\t\t/**\n\t\t * @member {Annotations} annotations\n\t\t * @memberof Rendition\n\t\t */\n\t\tthis.annotations = new Annotations(this);\n\n\t\tthis.epubcfi = new EpubCFI();\n\n\t\tthis.q = new Queue(this);\n\n\t\t/**\n\t\t * A Rendered Location Range\n\t\t * @typedef location\n\t\t * @type {Object}\n\t\t * @property {object} start\n\t\t * @property {string} start.index\n\t\t * @property {string} start.href\n\t\t * @property {object} start.displayed\n\t\t * @property {EpubCFI} start.cfi\n\t\t * @property {number} start.location\n\t\t * @property {number} start.percentage\n\t\t * @property {number} start.displayed.page\n\t\t * @property {number} start.displayed.total\n\t\t * @property {object} end\n\t\t * @property {string} end.index\n\t\t * @property {string} end.href\n\t\t * @property {object} end.displayed\n\t\t * @property {EpubCFI} end.cfi\n\t\t * @property {number} end.location\n\t\t * @property {number} end.percentage\n\t\t * @property {number} end.displayed.page\n\t\t * @property {number} end.displayed.total\n\t\t * @property {boolean} atStart\n\t\t * @property {boolean} atEnd\n\t\t * @memberof Rendition\n\t\t */\n\t\tthis.location = undefined;\n\n\t\t// Hold queue until book is opened\n\t\tthis.q.enqueue(this.book.opened);\n\n\t\tthis.starting = new defer();\n\t\t/**\n\t\t * @member {promise} started returns after the rendition has started\n\t\t * @memberof Rendition\n\t\t */\n\t\tthis.started = this.starting.promise;\n\n\t\t// Block the queue until rendering is started\n\t\tthis.q.enqueue(this.start);\n\t}\n\n\t/**\n\t * Set the manager function\n\t * @param {function} manager\n\t */\n\tsetManager(manager) {\n\t\tthis.manager = manager;\n\t}\n\n\t/**\n\t * Require the manager from passed string, or as a class function\n\t * @param  {string|object} manager [description]\n\t * @return {method}\n\t */\n\trequireManager(manager) {\n\t\tvar viewManager;\n\n\t\t// If manager is a string, try to load from imported managers\n\t\tif (typeof manager === \"string\" && manager === \"default\") {\n\t\t\tviewManager = DefaultViewManager;\n\t\t} else if (typeof manager === \"string\" && manager === \"continuous\") {\n\t\t\tviewManager = ContinuousViewManager;\n\t\t} else {\n\t\t\t// otherwise, assume we were passed a class function\n\t\t\tviewManager = manager;\n\t\t}\n\n\t\treturn viewManager;\n\t}\n\n\t/**\n\t * Require the view from passed string, or as a class function\n\t * @param  {string|object} view\n\t * @return {view}\n\t */\n\trequireView(view) {\n\t\tvar View;\n\n\t\t// If view is a string, try to load from imported views,\n\t\tif (typeof view == \"string\" && view === \"iframe\") {\n\t\t\tView = IframeView;\n\t\t} else {\n\t\t\t// otherwise, assume we were passed a class function\n\t\t\tView = view;\n\t\t}\n\n\t\treturn View;\n\t}\n\n\t/**\n\t * Start the rendering\n\t * @return {Promise} rendering has started\n\t */\n\tstart(){\n\t\tif (!this.settings.layout && (this.book.package.metadata.layout === \"pre-paginated\" || this.book.displayOptions.fixedLayout === \"true\")) {\n\t\t\tthis.settings.layout = \"pre-paginated\";\n\t\t}\n\t\tswitch(this.book.package.metadata.spread) {\n\t\t\tcase 'none':\n\t\t\t\tthis.settings.spread = 'none';\n\t\t\t\tbreak;\n\t\t\tcase 'both':\n\t\t\t\tthis.settings.spread = true;\n\t\t\t\tbreak;\n\t\t}\n\n\t\tif(!this.manager) {\n\t\t\tthis.ViewManager = this.requireManager(this.settings.manager);\n\t\t\tthis.View = this.requireView(this.settings.view);\n\n\t\t\tthis.manager = new this.ViewManager({\n\t\t\t\tview: this.View,\n\t\t\t\tqueue: this.q,\n\t\t\t\trequest: this.book.load.bind(this.book),\n\t\t\t\tsettings: this.settings\n\t\t\t});\n\t\t}\n\n\t\tthis.direction(this.book.package.metadata.direction || this.settings.defaultDirection);\n\n\t\t// Parse metadata to get layout props\n\t\tthis.settings.globalLayoutProperties = this.determineLayoutProperties(this.book.package.metadata);\n\n\t\tthis.flow(this.settings.globalLayoutProperties.flow);\n\n\t\tthis.layout(this.settings.globalLayoutProperties);\n\n\t\t// Listen for displayed views\n\t\tthis.manager.on(EVENTS.MANAGERS.ADDED, this.afterDisplayed.bind(this));\n\t\tthis.manager.on(EVENTS.MANAGERS.REMOVED, this.afterRemoved.bind(this));\n\n\t\t// Listen for resizing\n\t\tthis.manager.on(EVENTS.MANAGERS.RESIZED, this.onResized.bind(this));\n\n\t\t// Listen for rotation\n\t\tthis.manager.on(EVENTS.MANAGERS.ORIENTATION_CHANGE, this.onOrientationChange.bind(this));\n\n\t\t// Listen for scroll changes\n\t\tthis.manager.on(EVENTS.MANAGERS.SCROLLED, this.reportLocation.bind(this));\n\n\t\t/**\n\t\t * Emit that rendering has started\n\t\t * @event started\n\t\t * @memberof Rendition\n\t\t */\n\t\tthis.emit(EVENTS.RENDITION.STARTED);\n\n\t\t// Start processing queue\n\t\tthis.starting.resolve();\n\t}\n\n\t/**\n\t * Call to attach the container to an element in the dom\n\t * Container must be attached before rendering can begin\n\t * @param  {element} element to attach to\n\t * @return {Promise}\n\t */\n\tattachTo(element){\n\n\t\treturn this.q.enqueue(function () {\n\n\t\t\t// Start rendering\n\t\t\tthis.manager.render(element, {\n\t\t\t\t\"width\"  : this.settings.width,\n\t\t\t\t\"height\" : this.settings.height\n\t\t\t});\n\n\t\t\t/**\n\t\t\t * Emit that rendering has attached to an element\n\t\t\t * @event attached\n\t\t\t * @memberof Rendition\n\t\t\t */\n\t\t\tthis.emit(EVENTS.RENDITION.ATTACHED);\n\n\t\t}.bind(this));\n\n\t}\n\n\t/**\n\t * Display a point in the book\n\t * The request will be added to the rendering Queue,\n\t * so it will wait until book is opened, rendering started\n\t * and all other rendering tasks have finished to be called.\n\t * @param  {string} target Url or EpubCFI\n\t * @return {Promise}\n\t */\n\tdisplay(target){\n\t\tif (this.displaying) {\n\t\t\tthis.displaying.resolve();\n\t\t}\n\t\treturn this.q.enqueue(this._display, target);\n\t}\n\n\t/**\n\t * Tells the manager what to display immediately\n\t * @private\n\t * @param  {string} target Url or EpubCFI\n\t * @return {Promise}\n\t */\n\t_display(target){\n\t\tif (!this.book) {\n\t\t\treturn;\n\t\t}\n\t\tvar isCfiString = this.epubcfi.isCfiString(target);\n\t\tvar displaying = new defer();\n\t\tvar displayed = displaying.promise;\n\t\tvar section;\n\t\tvar moveTo;\n\n\t\tthis.displaying = displaying;\n\n\t\t// Check if this is a book percentage\n\t\tif (this.book.locations.length() && isFloat(target)) {\n\t\t\ttarget = this.book.locations.cfiFromPercentage(parseFloat(target));\n\t\t}\n\n\t\tsection = this.book.spine.get(target);\n\n\t\tif(!section){\n\t\t\tdisplaying.reject(new Error(\"No Section Found\"));\n\t\t\treturn displayed;\n\t\t}\n\n\t\tthis.manager.display(section, target)\n\t\t\t.then(() => {\n\t\t\t\tdisplaying.resolve(section);\n\t\t\t\tthis.displaying = undefined;\n\n\t\t\t\t/**\n\t\t\t\t * Emit that a section has been displayed\n\t\t\t\t * @event displayed\n\t\t\t\t * @param {Section} section\n\t\t\t\t * @memberof Rendition\n\t\t\t\t */\n\t\t\t\tthis.emit(EVENTS.RENDITION.DISPLAYED, section);\n\t\t\t\tthis.reportLocation();\n\t\t\t}, (err) => {\n\t\t\t\t/**\n\t\t\t\t * Emit that has been an error displaying\n\t\t\t\t * @event displayError\n\t\t\t\t * @param {Section} section\n\t\t\t\t * @memberof Rendition\n\t\t\t\t */\n\t\t\t\tthis.emit(EVENTS.RENDITION.DISPLAY_ERROR, err);\n\t\t\t});\n\n\t\treturn displayed;\n\t}\n\n\t/*\n\trender(view, show) {\n\n\t\t// view.onLayout = this.layout.format.bind(this.layout);\n\t\tview.create();\n\n\t\t// Fit to size of the container, apply padding\n\t\tthis.manager.resizeView(view);\n\n\t\t// Render Chain\n\t\treturn view.section.render(this.book.request)\n\t\t\t.then(function(contents){\n\t\t\t\treturn view.load(contents);\n\t\t\t}.bind(this))\n\t\t\t.then(function(doc){\n\t\t\t\treturn this.hooks.content.trigger(view, this);\n\t\t\t}.bind(this))\n\t\t\t.then(function(){\n\t\t\t\tthis.layout.format(view.contents);\n\t\t\t\treturn this.hooks.layout.trigger(view, this);\n\t\t\t}.bind(this))\n\t\t\t.then(function(){\n\t\t\t\treturn view.display();\n\t\t\t}.bind(this))\n\t\t\t.then(function(){\n\t\t\t\treturn this.hooks.render.trigger(view, this);\n\t\t\t}.bind(this))\n\t\t\t.then(function(){\n\t\t\t\tif(show !== false) {\n\t\t\t\t\tthis.q.enqueue(function(view){\n\t\t\t\t\t\tview.show();\n\t\t\t\t\t}, view);\n\t\t\t\t}\n\t\t\t\t// this.map = new Map(view, this.layout);\n\t\t\t\tthis.hooks.show.trigger(view, this);\n\t\t\t\tthis.trigger(\"rendered\", view.section);\n\n\t\t\t}.bind(this))\n\t\t\t.catch(function(e){\n\t\t\t\tthis.trigger(\"loaderror\", e);\n\t\t\t}.bind(this));\n\n\t}\n\t*/\n\n\t/**\n\t * Report what section has been displayed\n\t * @private\n\t * @param  {*} view\n\t */\n\tafterDisplayed(view){\n\n\t\tview.on(EVENTS.VIEWS.MARK_CLICKED, (cfiRange, data) => this.triggerMarkEvent(cfiRange, data, view.contents));\n\n\t\tthis.hooks.render.trigger(view, this)\n\t\t\t.then(() => {\n\t\t\t\tif (view.contents) {\n\t\t\t\t\tthis.hooks.content.trigger(view.contents, this).then(() => {\n\t\t\t\t\t\t/**\n\t\t\t\t\t\t * Emit that a section has been rendered\n\t\t\t\t\t\t * @event rendered\n\t\t\t\t\t\t * @param {Section} section\n\t\t\t\t\t\t * @param {View} view\n\t\t\t\t\t\t * @memberof Rendition\n\t\t\t\t\t\t */\n\t\t\t\t\t\tthis.emit(EVENTS.RENDITION.RENDERED, view.section, view);\n\t\t\t\t\t});\n\t\t\t\t} else {\n\t\t\t\t\tthis.emit(EVENTS.RENDITION.RENDERED, view.section, view);\n\t\t\t\t}\n\t\t\t});\n\n\t}\n\n\t/**\n\t * Report what has been removed\n\t * @private\n\t * @param  {*} view\n\t */\n\tafterRemoved(view){\n\t\tthis.hooks.unloaded.trigger(view, this).then(() => {\n\t\t\t/**\n\t\t\t * Emit that a section has been removed\n\t\t\t * @event removed\n\t\t\t * @param {Section} section\n\t\t\t * @param {View} view\n\t\t\t * @memberof Rendition\n\t\t\t */\n\t\t\tthis.emit(EVENTS.RENDITION.REMOVED, view.section, view);\n\t\t});\n\t}\n\n\t/**\n\t * Report resize events and display the last seen location\n\t * @private\n\t */\n\tonResized(size, epubcfi){\n\n\t\t/**\n\t\t * Emit that the rendition has been resized\n\t\t * @event resized\n\t\t * @param {number} width\n\t\t * @param {height} height\n\t\t * @param {string} epubcfi (optional)\n\t\t * @memberof Rendition\n\t\t */\n\t\tthis.emit(EVENTS.RENDITION.RESIZED, {\n\t\t\twidth: size.width,\n\t\t\theight: size.height\n\t\t}, epubcfi);\n\n\t\tif (this.location && this.location.start) {\n\t\t\tthis.display(epubcfi || this.location.start.cfi);\n\t\t}\n\n\t}\n\n\t/**\n\t * Report orientation events and display the last seen location\n\t * @private\n\t */\n\tonOrientationChange(orientation){\n\t\t/**\n\t\t * Emit that the rendition has been rotated\n\t\t * @event orientationchange\n\t\t * @param {string} orientation\n\t\t * @memberof Rendition\n\t\t */\n\t\tthis.emit(EVENTS.RENDITION.ORIENTATION_CHANGE, orientation);\n\t}\n\n\t/**\n\t * Move the Rendition to a specific offset\n\t * Usually you would be better off calling display()\n\t * @param {object} offset\n\t */\n\tmoveTo(offset){\n\t\tthis.manager.moveTo(offset);\n\t}\n\n\t/**\n\t * Trigger a resize of the views\n\t * @param {number} [width]\n\t * @param {number} [height]\n\t * @param {string} [epubcfi] (optional)\n\t */\n\tresize(width, height, epubcfi){\n\t\tif (width) {\n\t\t\tthis.settings.width = width;\n\t\t}\n\t\tif (height) {\n\t\t\tthis.settings.height = height;\n\t\t}\n\t\tthis.manager.resize(width, height, epubcfi);\n\t}\n\n\t/**\n\t * Clear all rendered views\n\t */\n\tclear(){\n\t\tthis.manager.clear();\n\t}\n\n\t/**\n\t * Go to the next \"page\" in the rendition\n\t * @return {Promise}\n\t */\n\tnext(){\n\t\treturn this.q.enqueue(this.manager.next.bind(this.manager))\n\t\t\t.then(this.reportLocation.bind(this));\n\t}\n\n\t/**\n\t * Go to the previous \"page\" in the rendition\n\t * @return {Promise}\n\t */\n\tprev(){\n\t\treturn this.q.enqueue(this.manager.prev.bind(this.manager))\n\t\t\t.then(this.reportLocation.bind(this));\n\t}\n\n\t//-- http://www.idpf.org/epub/301/spec/epub-publications.html#meta-properties-rendering\n\t/**\n\t * Determine the Layout properties from metadata and settings\n\t * @private\n\t * @param  {object} metadata\n\t * @return {object} properties\n\t */\n\tdetermineLayoutProperties(metadata){\n\t\tvar properties;\n\t\tvar layout = this.settings.layout || metadata.layout || \"reflowable\";\n\t\tvar spread = this.settings.spread || metadata.spread || \"auto\";\n\t\tvar orientation = this.settings.orientation || metadata.orientation || \"auto\";\n\t\tvar flow = this.settings.flow || metadata.flow || \"auto\";\n\t\tvar viewport = metadata.viewport || \"\";\n\t\tvar minSpreadWidth = this.settings.minSpreadWidth || metadata.minSpreadWidth || 800;\n\t\tvar direction = this.settings.direction || metadata.direction || \"ltr\";\n\n\t\tif ((this.settings.width === 0 || this.settings.width > 0) &&\n\t\t\t\t(this.settings.height === 0 || this.settings.height > 0)) {\n\t\t\t// viewport = \"width=\"+this.settings.width+\", height=\"+this.settings.height+\"\";\n\t\t}\n\n\t\tproperties = {\n\t\t\tlayout : layout,\n\t\t\tspread : spread,\n\t\t\torientation : orientation,\n\t\t\tflow : flow,\n\t\t\tviewport : viewport,\n\t\t\tminSpreadWidth : minSpreadWidth,\n\t\t\tdirection: direction\n\t\t};\n\n\t\treturn properties;\n\t}\n\n\t/**\n\t * Adjust the flow of the rendition to paginated or scrolled\n\t * (scrolled-continuous vs scrolled-doc are handled by different view managers)\n\t * @param  {string} flow\n\t */\n\tflow(flow){\n\t\tvar _flow = flow;\n\t\tif (flow === \"scrolled\" ||\n\t\t\t\tflow === \"scrolled-doc\" ||\n\t\t\t\tflow === \"scrolled-continuous\") {\n\t\t\t_flow = \"scrolled\";\n\t\t}\n\n\t\tif (flow === \"auto\" || flow === \"paginated\") {\n\t\t\t_flow = \"paginated\";\n\t\t}\n\n\t\tthis.settings.flow = flow;\n\n\t\tif (this._layout) {\n\t\t\tthis._layout.flow(_flow);\n\t\t}\n\n\t\tif (this.manager && this._layout) {\n\t\t\tthis.manager.applyLayout(this._layout);\n\t\t}\n\n\t\tif (this.manager) {\n\t\t\tthis.manager.updateFlow(_flow);\n\t\t}\n\n\t\tif (this.manager && this.manager.isRendered() && this.location) {\n\t\t\tthis.manager.clear();\n\t\t\tthis.display(this.location.start.cfi);\n\t\t}\n\t}\n\n\t/**\n\t * Adjust the layout of the rendition to reflowable or pre-paginated\n\t * @param  {object} settings\n\t */\n\tlayout(settings){\n\t\tif (settings) {\n\t\t\tthis._layout = new Layout(settings);\n\t\t\tthis._layout.spread(settings.spread, this.settings.minSpreadWidth);\n\n\t\t\t// this.mapping = new Mapping(this._layout.props);\n\n\t\t\tthis._layout.on(EVENTS.LAYOUT.UPDATED, (props, changed) => {\n\t\t\t\tthis.emit(EVENTS.RENDITION.LAYOUT, props, changed);\n\t\t\t})\n\t\t}\n\n\t\tif (this.manager && this._layout) {\n\t\t\tthis.manager.applyLayout(this._layout);\n\t\t}\n\n\t\treturn this._layout;\n\t}\n\n\t/**\n\t * Adjust if the rendition uses spreads\n\t * @param  {string} spread none | auto (TODO: implement landscape, portrait, both)\n\t * @param  {int} [min] min width to use spreads at\n\t */\n\tspread(spread, min){\n\n\t\tthis.settings.spread = spread;\n\n\t\tif (min) {\n\t\t\tthis.settings.minSpreadWidth = min;\n\t\t}\n\n\t\tif (this._layout) {\n\t\t\tthis._layout.spread(spread, min);\n\t\t}\n\n\t\tif (this.manager && this.manager.isRendered()) {\n\t\t\tthis.manager.updateLayout();\n\t\t}\n\t}\n\n\t/**\n\t * Adjust the direction of the rendition\n\t * @param  {string} dir\n\t */\n\tdirection(dir){\n\n\t\tthis.settings.direction = dir || \"ltr\";\n\n\t\tif (this.manager) {\n\t\t\tthis.manager.direction(this.settings.direction);\n\t\t}\n\n\t\tif (this.manager && this.manager.isRendered() && this.location) {\n\t\t\tthis.manager.clear();\n\t\t\tthis.display(this.location.start.cfi);\n\t\t}\n\t}\n\n\t/**\n\t * Report the current location\n\t * @fires relocated\n\t * @fires locationChanged\n\t */\n\treportLocation(){\n\t\treturn this.q.enqueue(function reportedLocation(){\n\t\t\trequestAnimationFrame(function reportedLocationAfterRAF() {\n\t\t\t\tvar location = this.manager.currentLocation();\n\t\t\t\tif (location && location.then && typeof location.then === \"function\") {\n\t\t\t\t\tlocation.then(function(result) {\n\t\t\t\t\t\tlet located = this.located(result);\n\n\t\t\t\t\t\tif (!located || !located.start || !located.end) {\n\t\t\t\t\t\t\treturn;\n\t\t\t\t\t\t}\n\n\t\t\t\t\t\tthis.location = located;\n\n\t\t\t\t\t\tthis.emit(EVENTS.RENDITION.LOCATION_CHANGED, {\n\t\t\t\t\t\t\tindex: this.location.start.index,\n\t\t\t\t\t\t\thref: this.location.start.href,\n\t\t\t\t\t\t\tstart: this.location.start.cfi,\n\t\t\t\t\t\t\tend: this.location.end.cfi,\n\t\t\t\t\t\t\tpercentage: this.location.start.percentage\n\t\t\t\t\t\t});\n\n\t\t\t\t\t\tthis.emit(EVENTS.RENDITION.RELOCATED, this.location);\n\t\t\t\t\t}.bind(this));\n\t\t\t\t} else if (location) {\n\t\t\t\t\tlet located = this.located(location);\n\n\t\t\t\t\tif (!located || !located.start || !located.end) {\n\t\t\t\t\t\treturn;\n\t\t\t\t\t}\n\n\t\t\t\t\tthis.location = located;\n\n\t\t\t\t\t/**\n\t\t\t\t\t * @event locationChanged\n\t\t\t\t\t * @deprecated\n\t\t\t\t\t * @type {object}\n\t\t\t\t\t * @property {number} index\n\t\t\t\t\t * @property {string} href\n\t\t\t\t\t * @property {EpubCFI} start\n\t\t\t\t\t * @property {EpubCFI} end\n\t\t\t\t\t * @property {number} percentage\n\t\t\t\t\t * @memberof Rendition\n\t\t\t\t\t */\n\t\t\t\t\tthis.emit(EVENTS.RENDITION.LOCATION_CHANGED, {\n\t\t\t\t\t\tindex: this.location.start.index,\n\t\t\t\t\t\thref: this.location.start.href,\n\t\t\t\t\t\tstart: this.location.start.cfi,\n\t\t\t\t\t\tend: this.location.end.cfi,\n\t\t\t\t\t\tpercentage: this.location.start.percentage\n\t\t\t\t\t});\n\n\t\t\t\t\t/**\n\t\t\t\t\t * @event relocated\n\t\t\t\t\t * @type {displayedLocation}\n\t\t\t\t\t * @memberof Rendition\n\t\t\t\t\t */\n\t\t\t\t\tthis.emit(EVENTS.RENDITION.RELOCATED, this.location);\n\t\t\t\t}\n\t\t\t}.bind(this));\n\t\t}.bind(this));\n\t}\n\n\t/**\n\t * Get the Current Location object\n\t * @return {displayedLocation | promise} location (may be a promise)\n\t */\n\tcurrentLocation(){\n\t\tvar location = this.manager.currentLocation();\n\t\tif (location && location.then && typeof location.then === \"function\") {\n\t\t\tlocation.then(function(result) {\n\t\t\t\tlet located = this.located(result);\n\t\t\t\treturn located;\n\t\t\t}.bind(this));\n\t\t} else if (location) {\n\t\t\tlet located = this.located(location);\n\t\t\treturn located;\n\t\t}\n\t}\n\n\t/**\n\t * Creates a Rendition#locationRange from location\n\t * passed by the Manager\n\t * @returns {displayedLocation}\n\t * @private\n\t */\n\tlocated(location){\n\t\tif (!location.length) {\n\t\t\treturn {};\n\t\t}\n\t\tlet start = location[0];\n\t\tlet end = location[location.length-1];\n\n\t\tlet located = {\n\t\t\tstart: {\n\t\t\t\tindex: start.index,\n\t\t\t\thref: start.href,\n\t\t\t\tcfi: start.mapping.start,\n\t\t\t\tdisplayed: {\n\t\t\t\t\tpage: start.pages[0] || 1,\n\t\t\t\t\ttotal: start.totalPages\n\t\t\t\t}\n\t\t\t},\n\t\t\tend: {\n\t\t\t\tindex: end.index,\n\t\t\t\thref: end.href,\n\t\t\t\tcfi: end.mapping.end,\n\t\t\t\tdisplayed: {\n\t\t\t\t\tpage: end.pages[end.pages.length-1] || 1,\n\t\t\t\t\ttotal: end.totalPages\n\t\t\t\t}\n\t\t\t}\n\t\t};\n\n\t\tlet locationStart = this.book.locations.locationFromCfi(start.mapping.start);\n\t\tlet locationEnd = this.book.locations.locationFromCfi(end.mapping.end);\n\n\t\tif (locationStart != null) {\n\t\t\tlocated.start.location = locationStart;\n\t\t\tlocated.start.percentage = this.book.locations.percentageFromLocation(locationStart);\n\t\t}\n\t\tif (locationEnd != null) {\n\t\t\tlocated.end.location = locationEnd;\n\t\t\tlocated.end.percentage = this.book.locations.percentageFromLocation(locationEnd);\n\t\t}\n\n\t\tlet pageStart = this.book.pageList.pageFromCfi(start.mapping.start);\n\t\tlet pageEnd = this.book.pageList.pageFromCfi(end.mapping.end);\n\n\t\tif (pageStart != -1) {\n\t\t\tlocated.start.page = pageStart;\n\t\t}\n\t\tif (pageEnd != -1) {\n\t\t\tlocated.end.page = pageEnd;\n\t\t}\n\n\t\tif (end.index === this.book.spine.last().index &&\n\t\t\t\tlocated.end.displayed.page >= located.end.displayed.total) {\n\t\t\tlocated.atEnd = true;\n\t\t}\n\n\t\tif (start.index === this.book.spine.first().index &&\n\t\t\t\tlocated.start.displayed.page === 1) {\n\t\t\tlocated.atStart = true;\n\t\t}\n\n\t\treturn located;\n\t}\n\n\t/**\n\t * Remove and Clean Up the Rendition\n\t */\n\tdestroy(){\n\t\t// Clear the queue\n\t\t// this.q.clear();\n\t\t// this.q = undefined;\n\n\t\tthis.manager && this.manager.destroy();\n\n\t\tthis.book = undefined;\n\n\t\t// this.views = null;\n\n\t\t// this.hooks.display.clear();\n\t\t// this.hooks.serialize.clear();\n\t\t// this.hooks.content.clear();\n\t\t// this.hooks.layout.clear();\n\t\t// this.hooks.render.clear();\n\t\t// this.hooks.show.clear();\n\t\t// this.hooks = {};\n\n\t\t// this.themes.destroy();\n\t\t// this.themes = undefined;\n\n\t\t// this.epubcfi = undefined;\n\n\t\t// this.starting = undefined;\n\t\t// this.started = undefined;\n\n\n\t}\n\n\t/**\n\t * Pass the events from a view's Contents\n\t * @private\n\t * @param  {Contents} view contents\n\t */\n\tpassEvents(contents){\n\t\tDOM_EVENTS.forEach((e) => {\n\t\t\tcontents.on(e, (ev) => this.triggerViewEvent(ev, contents));\n\t\t});\n\n\t\tcontents.on(EVENTS.CONTENTS.SELECTED, (e) => this.triggerSelectedEvent(e, contents));\n\t}\n\n\t/**\n\t * Emit events passed by a view\n\t * @private\n\t * @param  {event} e\n\t */\n\ttriggerViewEvent(e, contents){\n\t\tthis.emit(e.type, e, contents);\n\t}\n\n\t/**\n\t * Emit a selection event's CFI Range passed from a a view\n\t * @private\n\t * @param  {string} cfirange\n\t */\n\ttriggerSelectedEvent(cfirange, contents){\n\t\t/**\n\t\t * Emit that a text selection has occurred\n\t\t * @event selected\n\t\t * @param {string} cfirange\n\t\t * @param {Contents} contents\n\t\t * @memberof Rendition\n\t\t */\n\t\tthis.emit(EVENTS.RENDITION.SELECTED, cfirange, contents);\n\t}\n\n\t/**\n\t * Emit a markClicked event with the cfiRange and data from a mark\n\t * @private\n\t * @param  {EpubCFI} cfirange\n\t */\n\ttriggerMarkEvent(cfiRange, data, contents){\n\t\t/**\n\t\t * Emit that a mark was clicked\n\t\t * @event markClicked\n\t\t * @param {EpubCFI} cfirange\n\t\t * @param {object} data\n\t\t * @param {Contents} contents\n\t\t * @memberof Rendition\n\t\t */\n\t\tthis.emit(EVENTS.RENDITION.MARK_CLICKED, cfiRange, data, contents);\n\t}\n\n\t/**\n\t * Get a Range from a Visible CFI\n\t * @param  {string} cfi EpubCfi String\n\t * @param  {string} ignoreClass\n\t * @return {range}\n\t */\n\tgetRange(cfi, ignoreClass){\n\t\tvar _cfi = new EpubCFI(cfi);\n\t\tvar found = this.manager.visible().filter(function (view) {\n\t\t\tif(_cfi.spinePos === view.index) return true;\n\t\t});\n\n\t\t// Should only every return 1 item\n\t\tif (found.length) {\n\t\t\treturn found[0].contents.range(_cfi, ignoreClass);\n\t\t}\n\t}\n\n\t/**\n\t * Hook to adjust images to fit in columns\n\t * @param  {Contents} contents\n\t * @private\n\t */\n\tadjustImages(contents) {\n\n\t\tif (this._layout.name === \"pre-paginated\") {\n\t\t\treturn new Promise(function(resolve){\n\t\t\t\tresolve();\n\t\t\t});\n\t\t}\n\n\t\tlet computed = contents.window.getComputedStyle(contents.content, null);\n\t\tlet height = (contents.content.offsetHeight - (parseFloat(computed.paddingTop) + parseFloat(computed.paddingBottom))) * .95;\n\t\tlet horizontalPadding = parseFloat(computed.paddingLeft) + parseFloat(computed.paddingRight);\n\n\t\tcontents.addStylesheetRules({\n\t\t\t\"img\" : {\n\t\t\t\t\"max-width\": (this._layout.columnWidth ? (this._layout.columnWidth - horizontalPadding) + \"px\" : \"100%\") + \"!important\",\n\t\t\t\t\"max-height\": height + \"px\" + \"!important\",\n\t\t\t\t\"object-fit\": \"contain\",\n\t\t\t\t\"page-break-inside\": \"avoid\",\n\t\t\t\t\"break-inside\": \"avoid\",\n\t\t\t\t\"box-sizing\": \"border-box\"\n\t\t\t},\n\t\t\t\"svg\" : {\n\t\t\t\t\"max-width\": (this._layout.columnWidth ? (this._layout.columnWidth - horizontalPadding) + \"px\" : \"100%\") + \"!important\",\n\t\t\t\t\"max-height\": height + \"px\" + \"!important\",\n\t\t\t\t\"page-break-inside\": \"avoid\",\n\t\t\t\t\"break-inside\": \"avoid\"\n\t\t\t}\n\t\t});\n\n\t\treturn new Promise(function(resolve, reject){\n\t\t\t// Wait to apply\n\t\t\tsetTimeout(function() {\n\t\t\t\tresolve();\n\t\t\t}, 1);\n\t\t});\n\t}\n\n\t/**\n\t * Get the Contents object of each rendered view\n\t * @returns {Contents[]}\n\t */\n\tgetContents () {\n\t\treturn this.manager ? this.manager.getContents() : [];\n\t}\n\n\t/**\n\t * Get the views member from the manager\n\t * @returns {Views}\n\t */\n\tviews () {\n\t\tlet views = this.manager ? this.manager.views : undefined;\n\t\treturn views || [];\n\t}\n\n\t/**\n\t * Hook to handle link clicks in rendered content\n\t * @param  {Contents} contents\n\t * @private\n\t */\n\thandleLinks(contents) {\n\t\tif (contents) {\n\t\t\tcontents.on(EVENTS.CONTENTS.LINK_CLICKED, (href) => {\n\t\t\t\tlet relative = this.book.path.relative(href);\n\t\t\t\tthis.display(relative);\n\t\t\t});\n\t\t}\n\t}\n\n\t/**\n\t * Hook to handle injecting stylesheet before\n\t * a Section is serialized\n\t * @param  {document} doc\n\t * @param  {Section} section\n\t * @private\n\t */\n\tinjectStylesheet(doc, section) {\n\t\tlet style = doc.createElement(\"link\");\n\t\tstyle.setAttribute(\"type\", \"text/css\");\n\t\tstyle.setAttribute(\"rel\", \"stylesheet\");\n\t\tstyle.setAttribute(\"href\", this.settings.stylesheet);\n\t\tdoc.getElementsByTagName(\"head\")[0].appendChild(style);\n\t}\n\n\t/**\n\t * Hook to handle injecting scripts before\n\t * a Section is serialized\n\t * @param  {document} doc\n\t * @param  {Section} section\n\t * @private\n\t */\n\tinjectScript(doc, section) {\n\t\tlet script = doc.createElement(\"script\");\n\t\tscript.setAttribute(\"type\", \"text/javascript\");\n\t\tscript.setAttribute(\"src\", this.settings.script);\n\t\tscript.textContent = \" \"; // Needed to prevent self closing tag\n\t\tdoc.getElementsByTagName(\"head\")[0].appendChild(script);\n\t}\n\n\t/**\n\t * Hook to handle the document identifier before\n\t * a Section is serialized\n\t * @param  {document} doc\n\t * @param  {Section} section\n\t * @private\n\t */\n\tinjectIdentifier(doc, section) {\n\t\tlet ident = this.book.packaging.metadata.identifier;\n\t\tlet meta = doc.createElement(\"meta\");\n\t\tmeta.setAttribute(\"name\", \"dc.relation.ispartof\");\n\t\tif (ident) {\n\t\t\tmeta.setAttribute(\"content\", ident);\n\t\t}\n\t\tdoc.getElementsByTagName(\"head\")[0].appendChild(meta);\n\t}\n\n}\n\n//-- Enable binding events to Renderer\nEventEmitter(Rendition.prototype);\n\nexport default Rendition;\n","var root = require('./_root');\n\n/** Built-in value references. */\nvar Symbol = root.Symbol;\n\nmodule.exports = Symbol;\n","/*!\n    localForage -- Offline Storage, Improved\n    Version 1.10.0\n    https://localforage.github.io/localForage\n    (c) 2013-2017 Mozilla, Apache License 2.0\n*/\n(function(f){if(typeof exports===\"object\"&&typeof module!==\"undefined\"){module.exports=f()}else if(typeof define===\"function\"&&define.amd){define([],f)}else{var g;if(typeof window!==\"undefined\"){g=window}else if(typeof global!==\"undefined\"){g=global}else if(typeof self!==\"undefined\"){g=self}else{g=this}g.localforage = f()}})(function(){var define,module,exports;return (function e(t,n,r){function s(o,u){if(!n[o]){if(!t[o]){var a=typeof require==\"function\"&&require;if(!u&&a)return a(o,!0);if(i)return i(o,!0);var f=new Error(\"Cannot find module '\"+o+\"'\");throw (f.code=\"MODULE_NOT_FOUND\", f)}var l=n[o]={exports:{}};t[o][0].call(l.exports,function(e){var n=t[o][1][e];return s(n?n:e)},l,l.exports,e,t,n,r)}return n[o].exports}var i=typeof require==\"function\"&&require;for(var o=0;o<r.length;o++)s(r[o]);return s})({1:[function(_dereq_,module,exports){\n(function (global){\n'use strict';\nvar Mutation = global.MutationObserver || global.WebKitMutationObserver;\n\nvar scheduleDrain;\n\n{\n  if (Mutation) {\n    var called = 0;\n    var observer = new Mutation(nextTick);\n    var element = global.document.createTextNode('');\n    observer.observe(element, {\n      characterData: true\n    });\n    scheduleDrain = function () {\n      element.data = (called = ++called % 2);\n    };\n  } else if (!global.setImmediate && typeof global.MessageChannel !== 'undefined') {\n    var channel = new global.MessageChannel();\n    channel.port1.onmessage = nextTick;\n    scheduleDrain = function () {\n      channel.port2.postMessage(0);\n    };\n  } else if ('document' in global && 'onreadystatechange' in global.document.createElement('script')) {\n    scheduleDrain = function () {\n\n      // Create a <script> element; its readystatechange event will be fired asynchronously once it is inserted\n      // into the document. Do so, thus queuing up the task. Remember to clean up once it's been called.\n      var scriptEl = global.document.createElement('script');\n      scriptEl.onreadystatechange = function () {\n        nextTick();\n\n        scriptEl.onreadystatechange = null;\n        scriptEl.parentNode.removeChild(scriptEl);\n        scriptEl = null;\n      };\n      global.document.documentElement.appendChild(scriptEl);\n    };\n  } else {\n    scheduleDrain = function () {\n      setTimeout(nextTick, 0);\n    };\n  }\n}\n\nvar draining;\nvar queue = [];\n//named nextTick for less confusing stack traces\nfunction nextTick() {\n  draining = true;\n  var i, oldQueue;\n  var len = queue.length;\n  while (len) {\n    oldQueue = queue;\n    queue = [];\n    i = -1;\n    while (++i < len) {\n      oldQueue[i]();\n    }\n    len = queue.length;\n  }\n  draining = false;\n}\n\nmodule.exports = immediate;\nfunction immediate(task) {\n  if (queue.push(task) === 1 && !draining) {\n    scheduleDrain();\n  }\n}\n\n}).call(this,typeof global !== \"undefined\" ? global : typeof self !== \"undefined\" ? self : typeof window !== \"undefined\" ? window : {})\n},{}],2:[function(_dereq_,module,exports){\n'use strict';\nvar immediate = _dereq_(1);\n\n/* istanbul ignore next */\nfunction INTERNAL() {}\n\nvar handlers = {};\n\nvar REJECTED = ['REJECTED'];\nvar FULFILLED = ['FULFILLED'];\nvar PENDING = ['PENDING'];\n\nmodule.exports = Promise;\n\nfunction Promise(resolver) {\n  if (typeof resolver !== 'function') {\n    throw new TypeError('resolver must be a function');\n  }\n  this.state = PENDING;\n  this.queue = [];\n  this.outcome = void 0;\n  if (resolver !== INTERNAL) {\n    safelyResolveThenable(this, resolver);\n  }\n}\n\nPromise.prototype[\"catch\"] = function (onRejected) {\n  return this.then(null, onRejected);\n};\nPromise.prototype.then = function (onFulfilled, onRejected) {\n  if (typeof onFulfilled !== 'function' && this.state === FULFILLED ||\n    typeof onRejected !== 'function' && this.state === REJECTED) {\n    return this;\n  }\n  var promise = new this.constructor(INTERNAL);\n  if (this.state !== PENDING) {\n    var resolver = this.state === FULFILLED ? onFulfilled : onRejected;\n    unwrap(promise, resolver, this.outcome);\n  } else {\n    this.queue.push(new QueueItem(promise, onFulfilled, onRejected));\n  }\n\n  return promise;\n};\nfunction QueueItem(promise, onFulfilled, onRejected) {\n  this.promise = promise;\n  if (typeof onFulfilled === 'function') {\n    this.onFulfilled = onFulfilled;\n    this.callFulfilled = this.otherCallFulfilled;\n  }\n  if (typeof onRejected === 'function') {\n    this.onRejected = onRejected;\n    this.callRejected = this.otherCallRejected;\n  }\n}\nQueueItem.prototype.callFulfilled = function (value) {\n  handlers.resolve(this.promise, value);\n};\nQueueItem.prototype.otherCallFulfilled = function (value) {\n  unwrap(this.promise, this.onFulfilled, value);\n};\nQueueItem.prototype.callRejected = function (value) {\n  handlers.reject(this.promise, value);\n};\nQueueItem.prototype.otherCallRejected = function (value) {\n  unwrap(this.promise, this.onRejected, value);\n};\n\nfunction unwrap(promise, func, value) {\n  immediate(function () {\n    var returnValue;\n    try {\n      returnValue = func(value);\n    } catch (e) {\n      return handlers.reject(promise, e);\n    }\n    if (returnValue === promise) {\n      handlers.reject(promise, new TypeError('Cannot resolve promise with itself'));\n    } else {\n      handlers.resolve(promise, returnValue);\n    }\n  });\n}\n\nhandlers.resolve = function (self, value) {\n  var result = tryCatch(getThen, value);\n  if (result.status === 'error') {\n    return handlers.reject(self, result.value);\n  }\n  var thenable = result.value;\n\n  if (thenable) {\n    safelyResolveThenable(self, thenable);\n  } else {\n    self.state = FULFILLED;\n    self.outcome = value;\n    var i = -1;\n    var len = self.queue.length;\n    while (++i < len) {\n      self.queue[i].callFulfilled(value);\n    }\n  }\n  return self;\n};\nhandlers.reject = function (self, error) {\n  self.state = REJECTED;\n  self.outcome = error;\n  var i = -1;\n  var len = self.queue.length;\n  while (++i < len) {\n    self.queue[i].callRejected(error);\n  }\n  return self;\n};\n\nfunction getThen(obj) {\n  // Make sure we only access the accessor once as required by the spec\n  var then = obj && obj.then;\n  if (obj && (typeof obj === 'object' || typeof obj === 'function') && typeof then === 'function') {\n    return function appyThen() {\n      then.apply(obj, arguments);\n    };\n  }\n}\n\nfunction safelyResolveThenable(self, thenable) {\n  // Either fulfill, reject or reject with error\n  var called = false;\n  function onError(value) {\n    if (called) {\n      return;\n    }\n    called = true;\n    handlers.reject(self, value);\n  }\n\n  function onSuccess(value) {\n    if (called) {\n      return;\n    }\n    called = true;\n    handlers.resolve(self, value);\n  }\n\n  function tryToUnwrap() {\n    thenable(onSuccess, onError);\n  }\n\n  var result = tryCatch(tryToUnwrap);\n  if (result.status === 'error') {\n    onError(result.value);\n  }\n}\n\nfunction tryCatch(func, value) {\n  var out = {};\n  try {\n    out.value = func(value);\n    out.status = 'success';\n  } catch (e) {\n    out.status = 'error';\n    out.value = e;\n  }\n  return out;\n}\n\nPromise.resolve = resolve;\nfunction resolve(value) {\n  if (value instanceof this) {\n    return value;\n  }\n  return handlers.resolve(new this(INTERNAL), value);\n}\n\nPromise.reject = reject;\nfunction reject(reason) {\n  var promise = new this(INTERNAL);\n  return handlers.reject(promise, reason);\n}\n\nPromise.all = all;\nfunction all(iterable) {\n  var self = this;\n  if (Object.prototype.toString.call(iterable) !== '[object Array]') {\n    return this.reject(new TypeError('must be an array'));\n  }\n\n  var len = iterable.length;\n  var called = false;\n  if (!len) {\n    return this.resolve([]);\n  }\n\n  var values = new Array(len);\n  var resolved = 0;\n  var i = -1;\n  var promise = new this(INTERNAL);\n\n  while (++i < len) {\n    allResolver(iterable[i], i);\n  }\n  return promise;\n  function allResolver(value, i) {\n    self.resolve(value).then(resolveFromAll, function (error) {\n      if (!called) {\n        called = true;\n        handlers.reject(promise, error);\n      }\n    });\n    function resolveFromAll(outValue) {\n      values[i] = outValue;\n      if (++resolved === len && !called) {\n        called = true;\n        handlers.resolve(promise, values);\n      }\n    }\n  }\n}\n\nPromise.race = race;\nfunction race(iterable) {\n  var self = this;\n  if (Object.prototype.toString.call(iterable) !== '[object Array]') {\n    return this.reject(new TypeError('must be an array'));\n  }\n\n  var len = iterable.length;\n  var called = false;\n  if (!len) {\n    return this.resolve([]);\n  }\n\n  var i = -1;\n  var promise = new this(INTERNAL);\n\n  while (++i < len) {\n    resolver(iterable[i]);\n  }\n  return promise;\n  function resolver(value) {\n    self.resolve(value).then(function (response) {\n      if (!called) {\n        called = true;\n        handlers.resolve(promise, response);\n      }\n    }, function (error) {\n      if (!called) {\n        called = true;\n        handlers.reject(promise, error);\n      }\n    });\n  }\n}\n\n},{\"1\":1}],3:[function(_dereq_,module,exports){\n(function (global){\n'use strict';\nif (typeof global.Promise !== 'function') {\n  global.Promise = _dereq_(2);\n}\n\n}).call(this,typeof global !== \"undefined\" ? global : typeof self !== \"undefined\" ? self : typeof window !== \"undefined\" ? window : {})\n},{\"2\":2}],4:[function(_dereq_,module,exports){\n'use strict';\n\nvar _typeof = typeof Symbol === \"function\" && typeof Symbol.iterator === \"symbol\" ? function (obj) { return typeof obj; } : function (obj) { return obj && typeof Symbol === \"function\" && obj.constructor === Symbol && obj !== Symbol.prototype ? \"symbol\" : typeof obj; };\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\nfunction getIDB() {\n    /* global indexedDB,webkitIndexedDB,mozIndexedDB,OIndexedDB,msIndexedDB */\n    try {\n        if (typeof indexedDB !== 'undefined') {\n            return indexedDB;\n        }\n        if (typeof webkitIndexedDB !== 'undefined') {\n            return webkitIndexedDB;\n        }\n        if (typeof mozIndexedDB !== 'undefined') {\n            return mozIndexedDB;\n        }\n        if (typeof OIndexedDB !== 'undefined') {\n            return OIndexedDB;\n        }\n        if (typeof msIndexedDB !== 'undefined') {\n            return msIndexedDB;\n        }\n    } catch (e) {\n        return;\n    }\n}\n\nvar idb = getIDB();\n\nfunction isIndexedDBValid() {\n    try {\n        // Initialize IndexedDB; fall back to vendor-prefixed versions\n        // if needed.\n        if (!idb || !idb.open) {\n            return false;\n        }\n        // We mimic PouchDB here;\n        //\n        // We test for openDatabase because IE Mobile identifies itself\n        // as Safari. Oh the lulz...\n        var isSafari = typeof openDatabase !== 'undefined' && /(Safari|iPhone|iPad|iPod)/.test(navigator.userAgent) && !/Chrome/.test(navigator.userAgent) && !/BlackBerry/.test(navigator.platform);\n\n        var hasFetch = typeof fetch === 'function' && fetch.toString().indexOf('[native code') !== -1;\n\n        // Safari <10.1 does not meet our requirements for IDB support\n        // (see: https://github.com/pouchdb/pouchdb/issues/5572).\n        // Safari 10.1 shipped with fetch, we can use that to detect it.\n        // Note: this creates issues with `window.fetch` polyfills and\n        // overrides; see:\n        // https://github.com/localForage/localForage/issues/856\n        return (!isSafari || hasFetch) && typeof indexedDB !== 'undefined' &&\n        // some outdated implementations of IDB that appear on Samsung\n        // and HTC Android devices <4.4 are missing IDBKeyRange\n        // See: https://github.com/mozilla/localForage/issues/128\n        // See: https://github.com/mozilla/localForage/issues/272\n        typeof IDBKeyRange !== 'undefined';\n    } catch (e) {\n        return false;\n    }\n}\n\n// Abstracts constructing a Blob object, so it also works in older\n// browsers that don't support the native Blob constructor. (i.e.\n// old QtWebKit versions, at least).\n// Abstracts constructing a Blob object, so it also works in older\n// browsers that don't support the native Blob constructor. (i.e.\n// old QtWebKit versions, at least).\nfunction createBlob(parts, properties) {\n    /* global BlobBuilder,MSBlobBuilder,MozBlobBuilder,WebKitBlobBuilder */\n    parts = parts || [];\n    properties = properties || {};\n    try {\n        return new Blob(parts, properties);\n    } catch (e) {\n        if (e.name !== 'TypeError') {\n            throw e;\n        }\n        var Builder = typeof BlobBuilder !== 'undefined' ? BlobBuilder : typeof MSBlobBuilder !== 'undefined' ? MSBlobBuilder : typeof MozBlobBuilder !== 'undefined' ? MozBlobBuilder : WebKitBlobBuilder;\n        var builder = new Builder();\n        for (var i = 0; i < parts.length; i += 1) {\n            builder.append(parts[i]);\n        }\n        return builder.getBlob(properties.type);\n    }\n}\n\n// This is CommonJS because lie is an external dependency, so Rollup\n// can just ignore it.\nif (typeof Promise === 'undefined') {\n    // In the \"nopromises\" build this will just throw if you don't have\n    // a global promise object, but it would throw anyway later.\n    _dereq_(3);\n}\nvar Promise$1 = Promise;\n\nfunction executeCallback(promise, callback) {\n    if (callback) {\n        promise.then(function (result) {\n            callback(null, result);\n        }, function (error) {\n            callback(error);\n        });\n    }\n}\n\nfunction executeTwoCallbacks(promise, callback, errorCallback) {\n    if (typeof callback === 'function') {\n        promise.then(callback);\n    }\n\n    if (typeof errorCallback === 'function') {\n        promise[\"catch\"](errorCallback);\n    }\n}\n\nfunction normalizeKey(key) {\n    // Cast the key to a string, as that's all we can set as a key.\n    if (typeof key !== 'string') {\n        console.warn(key + ' used as a key, but it is not a string.');\n        key = String(key);\n    }\n\n    return key;\n}\n\nfunction getCallback() {\n    if (arguments.length && typeof arguments[arguments.length - 1] === 'function') {\n        return arguments[arguments.length - 1];\n    }\n}\n\n// Some code originally from async_storage.js in\n// [Gaia](https://github.com/mozilla-b2g/gaia).\n\nvar DETECT_BLOB_SUPPORT_STORE = 'local-forage-detect-blob-support';\nvar supportsBlobs = void 0;\nvar dbContexts = {};\nvar toString = Object.prototype.toString;\n\n// Transaction Modes\nvar READ_ONLY = 'readonly';\nvar READ_WRITE = 'readwrite';\n\n// Transform a binary string to an array buffer, because otherwise\n// weird stuff happens when you try to work with the binary string directly.\n// It is known.\n// From http://stackoverflow.com/questions/14967647/ (continues on next line)\n// encode-decode-image-with-base64-breaks-image (2013-04-21)\nfunction _binStringToArrayBuffer(bin) {\n    var length = bin.length;\n    var buf = new ArrayBuffer(length);\n    var arr = new Uint8Array(buf);\n    for (var i = 0; i < length; i++) {\n        arr[i] = bin.charCodeAt(i);\n    }\n    return buf;\n}\n\n//\n// Blobs are not supported in all versions of IndexedDB, notably\n// Chrome <37 and Android <5. In those versions, storing a blob will throw.\n//\n// Various other blob bugs exist in Chrome v37-42 (inclusive).\n// Detecting them is expensive and confusing to users, and Chrome 37-42\n// is at very low usage worldwide, so we do a hacky userAgent check instead.\n//\n// content-type bug: https://code.google.com/p/chromium/issues/detail?id=408120\n// 404 bug: https://code.google.com/p/chromium/issues/detail?id=447916\n// FileReader bug: https://code.google.com/p/chromium/issues/detail?id=447836\n//\n// Code borrowed from PouchDB. See:\n// https://github.com/pouchdb/pouchdb/blob/master/packages/node_modules/pouchdb-adapter-idb/src/blobSupport.js\n//\nfunction _checkBlobSupportWithoutCaching(idb) {\n    return new Promise$1(function (resolve) {\n        var txn = idb.transaction(DETECT_BLOB_SUPPORT_STORE, READ_WRITE);\n        var blob = createBlob(['']);\n        txn.objectStore(DETECT_BLOB_SUPPORT_STORE).put(blob, 'key');\n\n        txn.onabort = function (e) {\n            // If the transaction aborts now its due to not being able to\n            // write to the database, likely due to the disk being full\n            e.preventDefault();\n            e.stopPropagation();\n            resolve(false);\n        };\n\n        txn.oncomplete = function () {\n            var matchedChrome = navigator.userAgent.match(/Chrome\\/(\\d+)/);\n            var matchedEdge = navigator.userAgent.match(/Edge\\//);\n            // MS Edge pretends to be Chrome 42:\n            // https://msdn.microsoft.com/en-us/library/hh869301%28v=vs.85%29.aspx\n            resolve(matchedEdge || !matchedChrome || parseInt(matchedChrome[1], 10) >= 43);\n        };\n    })[\"catch\"](function () {\n        return false; // error, so assume unsupported\n    });\n}\n\nfunction _checkBlobSupport(idb) {\n    if (typeof supportsBlobs === 'boolean') {\n        return Promise$1.resolve(supportsBlobs);\n    }\n    return _checkBlobSupportWithoutCaching(idb).then(function (value) {\n        supportsBlobs = value;\n        return supportsBlobs;\n    });\n}\n\nfunction _deferReadiness(dbInfo) {\n    var dbContext = dbContexts[dbInfo.name];\n\n    // Create a deferred object representing the current database operation.\n    var deferredOperation = {};\n\n    deferredOperation.promise = new Promise$1(function (resolve, reject) {\n        deferredOperation.resolve = resolve;\n        deferredOperation.reject = reject;\n    });\n\n    // Enqueue the deferred operation.\n    dbContext.deferredOperations.push(deferredOperation);\n\n    // Chain its promise to the database readiness.\n    if (!dbContext.dbReady) {\n        dbContext.dbReady = deferredOperation.promise;\n    } else {\n        dbContext.dbReady = dbContext.dbReady.then(function () {\n            return deferredOperation.promise;\n        });\n    }\n}\n\nfunction _advanceReadiness(dbInfo) {\n    var dbContext = dbContexts[dbInfo.name];\n\n    // Dequeue a deferred operation.\n    var deferredOperation = dbContext.deferredOperations.pop();\n\n    // Resolve its promise (which is part of the database readiness\n    // chain of promises).\n    if (deferredOperation) {\n        deferredOperation.resolve();\n        return deferredOperation.promise;\n    }\n}\n\nfunction _rejectReadiness(dbInfo, err) {\n    var dbContext = dbContexts[dbInfo.name];\n\n    // Dequeue a deferred operation.\n    var deferredOperation = dbContext.deferredOperations.pop();\n\n    // Reject its promise (which is part of the database readiness\n    // chain of promises).\n    if (deferredOperation) {\n        deferredOperation.reject(err);\n        return deferredOperation.promise;\n    }\n}\n\nfunction _getConnection(dbInfo, upgradeNeeded) {\n    return new Promise$1(function (resolve, reject) {\n        dbContexts[dbInfo.name] = dbContexts[dbInfo.name] || createDbContext();\n\n        if (dbInfo.db) {\n            if (upgradeNeeded) {\n                _deferReadiness(dbInfo);\n                dbInfo.db.close();\n            } else {\n                return resolve(dbInfo.db);\n            }\n        }\n\n        var dbArgs = [dbInfo.name];\n\n        if (upgradeNeeded) {\n            dbArgs.push(dbInfo.version);\n        }\n\n        var openreq = idb.open.apply(idb, dbArgs);\n\n        if (upgradeNeeded) {\n            openreq.onupgradeneeded = function (e) {\n                var db = openreq.result;\n                try {\n                    db.createObjectStore(dbInfo.storeName);\n                    if (e.oldVersion <= 1) {\n                        // Added when support for blob shims was added\n                        db.createObjectStore(DETECT_BLOB_SUPPORT_STORE);\n                    }\n                } catch (ex) {\n                    if (ex.name === 'ConstraintError') {\n                        console.warn('The database \"' + dbInfo.name + '\"' + ' has been upgraded from version ' + e.oldVersion + ' to version ' + e.newVersion + ', but the storage \"' + dbInfo.storeName + '\" already exists.');\n                    } else {\n                        throw ex;\n                    }\n                }\n            };\n        }\n\n        openreq.onerror = function (e) {\n            e.preventDefault();\n            reject(openreq.error);\n        };\n\n        openreq.onsuccess = function () {\n            var db = openreq.result;\n            db.onversionchange = function (e) {\n                // Triggered when the database is modified (e.g. adding an objectStore) or\n                // deleted (even when initiated by other sessions in different tabs).\n                // Closing the connection here prevents those operations from being blocked.\n                // If the database is accessed again later by this instance, the connection\n                // will be reopened or the database recreated as needed.\n                e.target.close();\n            };\n            resolve(db);\n            _advanceReadiness(dbInfo);\n        };\n    });\n}\n\nfunction _getOriginalConnection(dbInfo) {\n    return _getConnection(dbInfo, false);\n}\n\nfunction _getUpgradedConnection(dbInfo) {\n    return _getConnection(dbInfo, true);\n}\n\nfunction _isUpgradeNeeded(dbInfo, defaultVersion) {\n    if (!dbInfo.db) {\n        return true;\n    }\n\n    var isNewStore = !dbInfo.db.objectStoreNames.contains(dbInfo.storeName);\n    var isDowngrade = dbInfo.version < dbInfo.db.version;\n    var isUpgrade = dbInfo.version > dbInfo.db.version;\n\n    if (isDowngrade) {\n        // If the version is not the default one\n        // then warn for impossible downgrade.\n        if (dbInfo.version !== defaultVersion) {\n            console.warn('The database \"' + dbInfo.name + '\"' + \" can't be downgraded from version \" + dbInfo.db.version + ' to version ' + dbInfo.version + '.');\n        }\n        // Align the versions to prevent errors.\n        dbInfo.version = dbInfo.db.version;\n    }\n\n    if (isUpgrade || isNewStore) {\n        // If the store is new then increment the version (if needed).\n        // This will trigger an \"upgradeneeded\" event which is required\n        // for creating a store.\n        if (isNewStore) {\n            var incVersion = dbInfo.db.version + 1;\n            if (incVersion > dbInfo.version) {\n                dbInfo.version = incVersion;\n            }\n        }\n\n        return true;\n    }\n\n    return false;\n}\n\n// encode a blob for indexeddb engines that don't support blobs\nfunction _encodeBlob(blob) {\n    return new Promise$1(function (resolve, reject) {\n        var reader = new FileReader();\n        reader.onerror = reject;\n        reader.onloadend = function (e) {\n            var base64 = btoa(e.target.result || '');\n            resolve({\n                __local_forage_encoded_blob: true,\n                data: base64,\n                type: blob.type\n            });\n        };\n        reader.readAsBinaryString(blob);\n    });\n}\n\n// decode an encoded blob\nfunction _decodeBlob(encodedBlob) {\n    var arrayBuff = _binStringToArrayBuffer(atob(encodedBlob.data));\n    return createBlob([arrayBuff], { type: encodedBlob.type });\n}\n\n// is this one of our fancy encoded blobs?\nfunction _isEncodedBlob(value) {\n    return value && value.__local_forage_encoded_blob;\n}\n\n// Specialize the default `ready()` function by making it dependent\n// on the current database operations. Thus, the driver will be actually\n// ready when it's been initialized (default) *and* there are no pending\n// operations on the database (initiated by some other instances).\nfunction _fullyReady(callback) {\n    var self = this;\n\n    var promise = self._initReady().then(function () {\n        var dbContext = dbContexts[self._dbInfo.name];\n\n        if (dbContext && dbContext.dbReady) {\n            return dbContext.dbReady;\n        }\n    });\n\n    executeTwoCallbacks(promise, callback, callback);\n    return promise;\n}\n\n// Try to establish a new db connection to replace the\n// current one which is broken (i.e. experiencing\n// InvalidStateError while creating a transaction).\nfunction _tryReconnect(dbInfo) {\n    _deferReadiness(dbInfo);\n\n    var dbContext = dbContexts[dbInfo.name];\n    var forages = dbContext.forages;\n\n    for (var i = 0; i < forages.length; i++) {\n        var forage = forages[i];\n        if (forage._dbInfo.db) {\n            forage._dbInfo.db.close();\n            forage._dbInfo.db = null;\n        }\n    }\n    dbInfo.db = null;\n\n    return _getOriginalConnection(dbInfo).then(function (db) {\n        dbInfo.db = db;\n        if (_isUpgradeNeeded(dbInfo)) {\n            // Reopen the database for upgrading.\n            return _getUpgradedConnection(dbInfo);\n        }\n        return db;\n    }).then(function (db) {\n        // store the latest db reference\n        // in case the db was upgraded\n        dbInfo.db = dbContext.db = db;\n        for (var i = 0; i < forages.length; i++) {\n            forages[i]._dbInfo.db = db;\n        }\n    })[\"catch\"](function (err) {\n        _rejectReadiness(dbInfo, err);\n        throw err;\n    });\n}\n\n// FF doesn't like Promises (micro-tasks) and IDDB store operations,\n// so we have to do it with callbacks\nfunction createTransaction(dbInfo, mode, callback, retries) {\n    if (retries === undefined) {\n        retries = 1;\n    }\n\n    try {\n        var tx = dbInfo.db.transaction(dbInfo.storeName, mode);\n        callback(null, tx);\n    } catch (err) {\n        if (retries > 0 && (!dbInfo.db || err.name === 'InvalidStateError' || err.name === 'NotFoundError')) {\n            return Promise$1.resolve().then(function () {\n                if (!dbInfo.db || err.name === 'NotFoundError' && !dbInfo.db.objectStoreNames.contains(dbInfo.storeName) && dbInfo.version <= dbInfo.db.version) {\n                    // increase the db version, to create the new ObjectStore\n                    if (dbInfo.db) {\n                        dbInfo.version = dbInfo.db.version + 1;\n                    }\n                    // Reopen the database for upgrading.\n                    return _getUpgradedConnection(dbInfo);\n                }\n            }).then(function () {\n                return _tryReconnect(dbInfo).then(function () {\n                    createTransaction(dbInfo, mode, callback, retries - 1);\n                });\n            })[\"catch\"](callback);\n        }\n\n        callback(err);\n    }\n}\n\nfunction createDbContext() {\n    return {\n        // Running localForages sharing a database.\n        forages: [],\n        // Shared database.\n        db: null,\n        // Database readiness (promise).\n        dbReady: null,\n        // Deferred operations on the database.\n        deferredOperations: []\n    };\n}\n\n// Open the IndexedDB database (automatically creates one if one didn't\n// previously exist), using any options set in the config.\nfunction _initStorage(options) {\n    var self = this;\n    var dbInfo = {\n        db: null\n    };\n\n    if (options) {\n        for (var i in options) {\n            dbInfo[i] = options[i];\n        }\n    }\n\n    // Get the current context of the database;\n    var dbContext = dbContexts[dbInfo.name];\n\n    // ...or create a new context.\n    if (!dbContext) {\n        dbContext = createDbContext();\n        // Register the new context in the global container.\n        dbContexts[dbInfo.name] = dbContext;\n    }\n\n    // Register itself as a running localForage in the current context.\n    dbContext.forages.push(self);\n\n    // Replace the default `ready()` function with the specialized one.\n    if (!self._initReady) {\n        self._initReady = self.ready;\n        self.ready = _fullyReady;\n    }\n\n    // Create an array of initialization states of the related localForages.\n    var initPromises = [];\n\n    function ignoreErrors() {\n        // Don't handle errors here,\n        // just makes sure related localForages aren't pending.\n        return Promise$1.resolve();\n    }\n\n    for (var j = 0; j < dbContext.forages.length; j++) {\n        var forage = dbContext.forages[j];\n        if (forage !== self) {\n            // Don't wait for itself...\n            initPromises.push(forage._initReady()[\"catch\"](ignoreErrors));\n        }\n    }\n\n    // Take a snapshot of the related localForages.\n    var forages = dbContext.forages.slice(0);\n\n    // Initialize the connection process only when\n    // all the related localForages aren't pending.\n    return Promise$1.all(initPromises).then(function () {\n        dbInfo.db = dbContext.db;\n        // Get the connection or open a new one without upgrade.\n        return _getOriginalConnection(dbInfo);\n    }).then(function (db) {\n        dbInfo.db = db;\n        if (_isUpgradeNeeded(dbInfo, self._defaultConfig.version)) {\n            // Reopen the database for upgrading.\n            return _getUpgradedConnection(dbInfo);\n        }\n        return db;\n    }).then(function (db) {\n        dbInfo.db = dbContext.db = db;\n        self._dbInfo = dbInfo;\n        // Share the final connection amongst related localForages.\n        for (var k = 0; k < forages.length; k++) {\n            var forage = forages[k];\n            if (forage !== self) {\n                // Self is already up-to-date.\n                forage._dbInfo.db = dbInfo.db;\n                forage._dbInfo.version = dbInfo.version;\n            }\n        }\n    });\n}\n\nfunction getItem(key, callback) {\n    var self = this;\n\n    key = normalizeKey(key);\n\n    var promise = new Promise$1(function (resolve, reject) {\n        self.ready().then(function () {\n            createTransaction(self._dbInfo, READ_ONLY, function (err, transaction) {\n                if (err) {\n                    return reject(err);\n                }\n\n                try {\n                    var store = transaction.objectStore(self._dbInfo.storeName);\n                    var req = store.get(key);\n\n                    req.onsuccess = function () {\n                        var value = req.result;\n                        if (value === undefined) {\n                            value = null;\n                        }\n                        if (_isEncodedBlob(value)) {\n                            value = _decodeBlob(value);\n                        }\n                        resolve(value);\n                    };\n\n                    req.onerror = function () {\n                        reject(req.error);\n                    };\n                } catch (e) {\n                    reject(e);\n                }\n            });\n        })[\"catch\"](reject);\n    });\n\n    executeCallback(promise, callback);\n    return promise;\n}\n\n// Iterate over all items stored in database.\nfunction iterate(iterator, callback) {\n    var self = this;\n\n    var promise = new Promise$1(function (resolve, reject) {\n        self.ready().then(function () {\n            createTransaction(self._dbInfo, READ_ONLY, function (err, transaction) {\n                if (err) {\n                    return reject(err);\n                }\n\n                try {\n                    var store = transaction.objectStore(self._dbInfo.storeName);\n                    var req = store.openCursor();\n                    var iterationNumber = 1;\n\n                    req.onsuccess = function () {\n                        var cursor = req.result;\n\n                        if (cursor) {\n                            var value = cursor.value;\n                            if (_isEncodedBlob(value)) {\n                                value = _decodeBlob(value);\n                            }\n                            var result = iterator(value, cursor.key, iterationNumber++);\n\n                            // when the iterator callback returns any\n                            // (non-`undefined`) value, then we stop\n                            // the iteration immediately\n                            if (result !== void 0) {\n                                resolve(result);\n                            } else {\n                                cursor[\"continue\"]();\n                            }\n                        } else {\n                            resolve();\n                        }\n                    };\n\n                    req.onerror = function () {\n                        reject(req.error);\n                    };\n                } catch (e) {\n                    reject(e);\n                }\n            });\n        })[\"catch\"](reject);\n    });\n\n    executeCallback(promise, callback);\n\n    return promise;\n}\n\nfunction setItem(key, value, callback) {\n    var self = this;\n\n    key = normalizeKey(key);\n\n    var promise = new Promise$1(function (resolve, reject) {\n        var dbInfo;\n        self.ready().then(function () {\n            dbInfo = self._dbInfo;\n            if (toString.call(value) === '[object Blob]') {\n                return _checkBlobSupport(dbInfo.db).then(function (blobSupport) {\n                    if (blobSupport) {\n                        return value;\n                    }\n                    return _encodeBlob(value);\n                });\n            }\n            return value;\n        }).then(function (value) {\n            createTransaction(self._dbInfo, READ_WRITE, function (err, transaction) {\n                if (err) {\n                    return reject(err);\n                }\n\n                try {\n                    var store = transaction.objectStore(self._dbInfo.storeName);\n\n                    // The reason we don't _save_ null is because IE 10 does\n                    // not support saving the `null` type in IndexedDB. How\n                    // ironic, given the bug below!\n                    // See: https://github.com/mozilla/localForage/issues/161\n                    if (value === null) {\n                        value = undefined;\n                    }\n\n                    var req = store.put(value, key);\n\n                    transaction.oncomplete = function () {\n                        // Cast to undefined so the value passed to\n                        // callback/promise is the same as what one would get out\n                        // of `getItem()` later. This leads to some weirdness\n                        // (setItem('foo', undefined) will return `null`), but\n                        // it's not my fault localStorage is our baseline and that\n                        // it's weird.\n                        if (value === undefined) {\n                            value = null;\n                        }\n\n                        resolve(value);\n                    };\n                    transaction.onabort = transaction.onerror = function () {\n                        var err = req.error ? req.error : req.transaction.error;\n                        reject(err);\n                    };\n                } catch (e) {\n                    reject(e);\n                }\n            });\n        })[\"catch\"](reject);\n    });\n\n    executeCallback(promise, callback);\n    return promise;\n}\n\nfunction removeItem(key, callback) {\n    var self = this;\n\n    key = normalizeKey(key);\n\n    var promise = new Promise$1(function (resolve, reject) {\n        self.ready().then(function () {\n            createTransaction(self._dbInfo, READ_WRITE, function (err, transaction) {\n                if (err) {\n                    return reject(err);\n                }\n\n                try {\n                    var store = transaction.objectStore(self._dbInfo.storeName);\n                    // We use a Grunt task to make this safe for IE and some\n                    // versions of Android (including those used by Cordova).\n                    // Normally IE won't like `.delete()` and will insist on\n                    // using `['delete']()`, but we have a build step that\n                    // fixes this for us now.\n                    var req = store[\"delete\"](key);\n                    transaction.oncomplete = function () {\n                        resolve();\n                    };\n\n                    transaction.onerror = function () {\n                        reject(req.error);\n                    };\n\n                    // The request will be also be aborted if we've exceeded our storage\n                    // space.\n                    transaction.onabort = function () {\n                        var err = req.error ? req.error : req.transaction.error;\n                        reject(err);\n                    };\n                } catch (e) {\n                    reject(e);\n                }\n            });\n        })[\"catch\"](reject);\n    });\n\n    executeCallback(promise, callback);\n    return promise;\n}\n\nfunction clear(callback) {\n    var self = this;\n\n    var promise = new Promise$1(function (resolve, reject) {\n        self.ready().then(function () {\n            createTransaction(self._dbInfo, READ_WRITE, function (err, transaction) {\n                if (err) {\n                    return reject(err);\n                }\n\n                try {\n                    var store = transaction.objectStore(self._dbInfo.storeName);\n                    var req = store.clear();\n\n                    transaction.oncomplete = function () {\n                        resolve();\n                    };\n\n                    transaction.onabort = transaction.onerror = function () {\n                        var err = req.error ? req.error : req.transaction.error;\n                        reject(err);\n                    };\n                } catch (e) {\n                    reject(e);\n                }\n            });\n        })[\"catch\"](reject);\n    });\n\n    executeCallback(promise, callback);\n    return promise;\n}\n\nfunction length(callback) {\n    var self = this;\n\n    var promise = new Promise$1(function (resolve, reject) {\n        self.ready().then(function () {\n            createTransaction(self._dbInfo, READ_ONLY, function (err, transaction) {\n                if (err) {\n                    return reject(err);\n                }\n\n                try {\n                    var store = transaction.objectStore(self._dbInfo.storeName);\n                    var req = store.count();\n\n                    req.onsuccess = function () {\n                        resolve(req.result);\n                    };\n\n                    req.onerror = function () {\n                        reject(req.error);\n                    };\n                } catch (e) {\n                    reject(e);\n                }\n            });\n        })[\"catch\"](reject);\n    });\n\n    executeCallback(promise, callback);\n    return promise;\n}\n\nfunction key(n, callback) {\n    var self = this;\n\n    var promise = new Promise$1(function (resolve, reject) {\n        if (n < 0) {\n            resolve(null);\n\n            return;\n        }\n\n        self.ready().then(function () {\n            createTransaction(self._dbInfo, READ_ONLY, function (err, transaction) {\n                if (err) {\n                    return reject(err);\n                }\n\n                try {\n                    var store = transaction.objectStore(self._dbInfo.storeName);\n                    var advanced = false;\n                    var req = store.openKeyCursor();\n\n                    req.onsuccess = function () {\n                        var cursor = req.result;\n                        if (!cursor) {\n                            // this means there weren't enough keys\n                            resolve(null);\n\n                            return;\n                        }\n\n                        if (n === 0) {\n                            // We have the first key, return it if that's what they\n                            // wanted.\n                            resolve(cursor.key);\n                        } else {\n                            if (!advanced) {\n                                // Otherwise, ask the cursor to skip ahead n\n                                // records.\n                                advanced = true;\n                                cursor.advance(n);\n                            } else {\n                                // When we get here, we've got the nth key.\n                                resolve(cursor.key);\n                            }\n                        }\n                    };\n\n                    req.onerror = function () {\n                        reject(req.error);\n                    };\n                } catch (e) {\n                    reject(e);\n                }\n            });\n        })[\"catch\"](reject);\n    });\n\n    executeCallback(promise, callback);\n    return promise;\n}\n\nfunction keys(callback) {\n    var self = this;\n\n    var promise = new Promise$1(function (resolve, reject) {\n        self.ready().then(function () {\n            createTransaction(self._dbInfo, READ_ONLY, function (err, transaction) {\n                if (err) {\n                    return reject(err);\n                }\n\n                try {\n                    var store = transaction.objectStore(self._dbInfo.storeName);\n                    var req = store.openKeyCursor();\n                    var keys = [];\n\n                    req.onsuccess = function () {\n                        var cursor = req.result;\n\n                        if (!cursor) {\n                            resolve(keys);\n                            return;\n                        }\n\n                        keys.push(cursor.key);\n                        cursor[\"continue\"]();\n                    };\n\n                    req.onerror = function () {\n                        reject(req.error);\n                    };\n                } catch (e) {\n                    reject(e);\n                }\n            });\n        })[\"catch\"](reject);\n    });\n\n    executeCallback(promise, callback);\n    return promise;\n}\n\nfunction dropInstance(options, callback) {\n    callback = getCallback.apply(this, arguments);\n\n    var currentConfig = this.config();\n    options = typeof options !== 'function' && options || {};\n    if (!options.name) {\n        options.name = options.name || currentConfig.name;\n        options.storeName = options.storeName || currentConfig.storeName;\n    }\n\n    var self = this;\n    var promise;\n    if (!options.name) {\n        promise = Promise$1.reject('Invalid arguments');\n    } else {\n        var isCurrentDb = options.name === currentConfig.name && self._dbInfo.db;\n\n        var dbPromise = isCurrentDb ? Promise$1.resolve(self._dbInfo.db) : _getOriginalConnection(options).then(function (db) {\n            var dbContext = dbContexts[options.name];\n            var forages = dbContext.forages;\n            dbContext.db = db;\n            for (var i = 0; i < forages.length; i++) {\n                forages[i]._dbInfo.db = db;\n            }\n            return db;\n        });\n\n        if (!options.storeName) {\n            promise = dbPromise.then(function (db) {\n                _deferReadiness(options);\n\n                var dbContext = dbContexts[options.name];\n                var forages = dbContext.forages;\n\n                db.close();\n                for (var i = 0; i < forages.length; i++) {\n                    var forage = forages[i];\n                    forage._dbInfo.db = null;\n                }\n\n                var dropDBPromise = new Promise$1(function (resolve, reject) {\n                    var req = idb.deleteDatabase(options.name);\n\n                    req.onerror = function () {\n                        var db = req.result;\n                        if (db) {\n                            db.close();\n                        }\n                        reject(req.error);\n                    };\n\n                    req.onblocked = function () {\n                        // Closing all open connections in onversionchange handler should prevent this situation, but if\n                        // we do get here, it just means the request remains pending - eventually it will succeed or error\n                        console.warn('dropInstance blocked for database \"' + options.name + '\" until all open connections are closed');\n                    };\n\n                    req.onsuccess = function () {\n                        var db = req.result;\n                        if (db) {\n                            db.close();\n                        }\n                        resolve(db);\n                    };\n                });\n\n                return dropDBPromise.then(function (db) {\n                    dbContext.db = db;\n                    for (var i = 0; i < forages.length; i++) {\n                        var _forage = forages[i];\n                        _advanceReadiness(_forage._dbInfo);\n                    }\n                })[\"catch\"](function (err) {\n                    (_rejectReadiness(options, err) || Promise$1.resolve())[\"catch\"](function () {});\n                    throw err;\n                });\n            });\n        } else {\n            promise = dbPromise.then(function (db) {\n                if (!db.objectStoreNames.contains(options.storeName)) {\n                    return;\n                }\n\n                var newVersion = db.version + 1;\n\n                _deferReadiness(options);\n\n                var dbContext = dbContexts[options.name];\n                var forages = dbContext.forages;\n\n                db.close();\n                for (var i = 0; i < forages.length; i++) {\n                    var forage = forages[i];\n                    forage._dbInfo.db = null;\n                    forage._dbInfo.version = newVersion;\n                }\n\n                var dropObjectPromise = new Promise$1(function (resolve, reject) {\n                    var req = idb.open(options.name, newVersion);\n\n                    req.onerror = function (err) {\n                        var db = req.result;\n                        db.close();\n                        reject(err);\n                    };\n\n                    req.onupgradeneeded = function () {\n                        var db = req.result;\n                        db.deleteObjectStore(options.storeName);\n                    };\n\n                    req.onsuccess = function () {\n                        var db = req.result;\n                        db.close();\n                        resolve(db);\n                    };\n                });\n\n                return dropObjectPromise.then(function (db) {\n                    dbContext.db = db;\n                    for (var j = 0; j < forages.length; j++) {\n                        var _forage2 = forages[j];\n                        _forage2._dbInfo.db = db;\n                        _advanceReadiness(_forage2._dbInfo);\n                    }\n                })[\"catch\"](function (err) {\n                    (_rejectReadiness(options, err) || Promise$1.resolve())[\"catch\"](function () {});\n                    throw err;\n                });\n            });\n        }\n    }\n\n    executeCallback(promise, callback);\n    return promise;\n}\n\nvar asyncStorage = {\n    _driver: 'asyncStorage',\n    _initStorage: _initStorage,\n    _support: isIndexedDBValid(),\n    iterate: iterate,\n    getItem: getItem,\n    setItem: setItem,\n    removeItem: removeItem,\n    clear: clear,\n    length: length,\n    key: key,\n    keys: keys,\n    dropInstance: dropInstance\n};\n\nfunction isWebSQLValid() {\n    return typeof openDatabase === 'function';\n}\n\n// Sadly, the best way to save binary data in WebSQL/localStorage is serializing\n// it to Base64, so this is how we store it to prevent very strange errors with less\n// verbose ways of binary <-> string data storage.\nvar BASE_CHARS = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/';\n\nvar BLOB_TYPE_PREFIX = '~~local_forage_type~';\nvar BLOB_TYPE_PREFIX_REGEX = /^~~local_forage_type~([^~]+)~/;\n\nvar SERIALIZED_MARKER = '__lfsc__:';\nvar SERIALIZED_MARKER_LENGTH = SERIALIZED_MARKER.length;\n\n// OMG the serializations!\nvar TYPE_ARRAYBUFFER = 'arbf';\nvar TYPE_BLOB = 'blob';\nvar TYPE_INT8ARRAY = 'si08';\nvar TYPE_UINT8ARRAY = 'ui08';\nvar TYPE_UINT8CLAMPEDARRAY = 'uic8';\nvar TYPE_INT16ARRAY = 'si16';\nvar TYPE_INT32ARRAY = 'si32';\nvar TYPE_UINT16ARRAY = 'ur16';\nvar TYPE_UINT32ARRAY = 'ui32';\nvar TYPE_FLOAT32ARRAY = 'fl32';\nvar TYPE_FLOAT64ARRAY = 'fl64';\nvar TYPE_SERIALIZED_MARKER_LENGTH = SERIALIZED_MARKER_LENGTH + TYPE_ARRAYBUFFER.length;\n\nvar toString$1 = Object.prototype.toString;\n\nfunction stringToBuffer(serializedString) {\n    // Fill the string into a ArrayBuffer.\n    var bufferLength = serializedString.length * 0.75;\n    var len = serializedString.length;\n    var i;\n    var p = 0;\n    var encoded1, encoded2, encoded3, encoded4;\n\n    if (serializedString[serializedString.length - 1] === '=') {\n        bufferLength--;\n        if (serializedString[serializedString.length - 2] === '=') {\n            bufferLength--;\n        }\n    }\n\n    var buffer = new ArrayBuffer(bufferLength);\n    var bytes = new Uint8Array(buffer);\n\n    for (i = 0; i < len; i += 4) {\n        encoded1 = BASE_CHARS.indexOf(serializedString[i]);\n        encoded2 = BASE_CHARS.indexOf(serializedString[i + 1]);\n        encoded3 = BASE_CHARS.indexOf(serializedString[i + 2]);\n        encoded4 = BASE_CHARS.indexOf(serializedString[i + 3]);\n\n        /*jslint bitwise: true */\n        bytes[p++] = encoded1 << 2 | encoded2 >> 4;\n        bytes[p++] = (encoded2 & 15) << 4 | encoded3 >> 2;\n        bytes[p++] = (encoded3 & 3) << 6 | encoded4 & 63;\n    }\n    return buffer;\n}\n\n// Converts a buffer to a string to store, serialized, in the backend\n// storage library.\nfunction bufferToString(buffer) {\n    // base64-arraybuffer\n    var bytes = new Uint8Array(buffer);\n    var base64String = '';\n    var i;\n\n    for (i = 0; i < bytes.length; i += 3) {\n        /*jslint bitwise: true */\n        base64String += BASE_CHARS[bytes[i] >> 2];\n        base64String += BASE_CHARS[(bytes[i] & 3) << 4 | bytes[i + 1] >> 4];\n        base64String += BASE_CHARS[(bytes[i + 1] & 15) << 2 | bytes[i + 2] >> 6];\n        base64String += BASE_CHARS[bytes[i + 2] & 63];\n    }\n\n    if (bytes.length % 3 === 2) {\n        base64String = base64String.substring(0, base64String.length - 1) + '=';\n    } else if (bytes.length % 3 === 1) {\n        base64String = base64String.substring(0, base64String.length - 2) + '==';\n    }\n\n    return base64String;\n}\n\n// Serialize a value, afterwards executing a callback (which usually\n// instructs the `setItem()` callback/promise to be executed). This is how\n// we store binary data with localStorage.\nfunction serialize(value, callback) {\n    var valueType = '';\n    if (value) {\n        valueType = toString$1.call(value);\n    }\n\n    // Cannot use `value instanceof ArrayBuffer` or such here, as these\n    // checks fail when running the tests using casper.js...\n    //\n    // TODO: See why those tests fail and use a better solution.\n    if (value && (valueType === '[object ArrayBuffer]' || value.buffer && toString$1.call(value.buffer) === '[object ArrayBuffer]')) {\n        // Convert binary arrays to a string and prefix the string with\n        // a special marker.\n        var buffer;\n        var marker = SERIALIZED_MARKER;\n\n        if (value instanceof ArrayBuffer) {\n            buffer = value;\n            marker += TYPE_ARRAYBUFFER;\n        } else {\n            buffer = value.buffer;\n\n            if (valueType === '[object Int8Array]') {\n                marker += TYPE_INT8ARRAY;\n            } else if (valueType === '[object Uint8Array]') {\n                marker += TYPE_UINT8ARRAY;\n            } else if (valueType === '[object Uint8ClampedArray]') {\n                marker += TYPE_UINT8CLAMPEDARRAY;\n            } else if (valueType === '[object Int16Array]') {\n                marker += TYPE_INT16ARRAY;\n            } else if (valueType === '[object Uint16Array]') {\n                marker += TYPE_UINT16ARRAY;\n            } else if (valueType === '[object Int32Array]') {\n                marker += TYPE_INT32ARRAY;\n            } else if (valueType === '[object Uint32Array]') {\n                marker += TYPE_UINT32ARRAY;\n            } else if (valueType === '[object Float32Array]') {\n                marker += TYPE_FLOAT32ARRAY;\n            } else if (valueType === '[object Float64Array]') {\n                marker += TYPE_FLOAT64ARRAY;\n            } else {\n                callback(new Error('Failed to get type for BinaryArray'));\n            }\n        }\n\n        callback(marker + bufferToString(buffer));\n    } else if (valueType === '[object Blob]') {\n        // Conver the blob to a binaryArray and then to a string.\n        var fileReader = new FileReader();\n\n        fileReader.onload = function () {\n            // Backwards-compatible prefix for the blob type.\n            var str = BLOB_TYPE_PREFIX + value.type + '~' + bufferToString(this.result);\n\n            callback(SERIALIZED_MARKER + TYPE_BLOB + str);\n        };\n\n        fileReader.readAsArrayBuffer(value);\n    } else {\n        try {\n            callback(JSON.stringify(value));\n        } catch (e) {\n            console.error(\"Couldn't convert value into a JSON string: \", value);\n\n            callback(null, e);\n        }\n    }\n}\n\n// Deserialize data we've inserted into a value column/field. We place\n// special markers into our strings to mark them as encoded; this isn't\n// as nice as a meta field, but it's the only sane thing we can do whilst\n// keeping localStorage support intact.\n//\n// Oftentimes this will just deserialize JSON content, but if we have a\n// special marker (SERIALIZED_MARKER, defined above), we will extract\n// some kind of arraybuffer/binary data/typed array out of the string.\nfunction deserialize(value) {\n    // If we haven't marked this string as being specially serialized (i.e.\n    // something other than serialized JSON), we can just return it and be\n    // done with it.\n    if (value.substring(0, SERIALIZED_MARKER_LENGTH) !== SERIALIZED_MARKER) {\n        return JSON.parse(value);\n    }\n\n    // The following code deals with deserializing some kind of Blob or\n    // TypedArray. First we separate out the type of data we're dealing\n    // with from the data itself.\n    var serializedString = value.substring(TYPE_SERIALIZED_MARKER_LENGTH);\n    var type = value.substring(SERIALIZED_MARKER_LENGTH, TYPE_SERIALIZED_MARKER_LENGTH);\n\n    var blobType;\n    // Backwards-compatible blob type serialization strategy.\n    // DBs created with older versions of localForage will simply not have the blob type.\n    if (type === TYPE_BLOB && BLOB_TYPE_PREFIX_REGEX.test(serializedString)) {\n        var matcher = serializedString.match(BLOB_TYPE_PREFIX_REGEX);\n        blobType = matcher[1];\n        serializedString = serializedString.substring(matcher[0].length);\n    }\n    var buffer = stringToBuffer(serializedString);\n\n    // Return the right type based on the code/type set during\n    // serialization.\n    switch (type) {\n        case TYPE_ARRAYBUFFER:\n            return buffer;\n        case TYPE_BLOB:\n            return createBlob([buffer], { type: blobType });\n        case TYPE_INT8ARRAY:\n            return new Int8Array(buffer);\n        case TYPE_UINT8ARRAY:\n            return new Uint8Array(buffer);\n        case TYPE_UINT8CLAMPEDARRAY:\n            return new Uint8ClampedArray(buffer);\n        case TYPE_INT16ARRAY:\n            return new Int16Array(buffer);\n        case TYPE_UINT16ARRAY:\n            return new Uint16Array(buffer);\n        case TYPE_INT32ARRAY:\n            return new Int32Array(buffer);\n        case TYPE_UINT32ARRAY:\n            return new Uint32Array(buffer);\n        case TYPE_FLOAT32ARRAY:\n            return new Float32Array(buffer);\n        case TYPE_FLOAT64ARRAY:\n            return new Float64Array(buffer);\n        default:\n            throw new Error('Unkown type: ' + type);\n    }\n}\n\nvar localforageSerializer = {\n    serialize: serialize,\n    deserialize: deserialize,\n    stringToBuffer: stringToBuffer,\n    bufferToString: bufferToString\n};\n\n/*\n * Includes code from:\n *\n * base64-arraybuffer\n * https://github.com/niklasvh/base64-arraybuffer\n *\n * Copyright (c) 2012 Niklas von Hertzen\n * Licensed under the MIT license.\n */\n\nfunction createDbTable(t, dbInfo, callback, errorCallback) {\n    t.executeSql('CREATE TABLE IF NOT EXISTS ' + dbInfo.storeName + ' ' + '(id INTEGER PRIMARY KEY, key unique, value)', [], callback, errorCallback);\n}\n\n// Open the WebSQL database (automatically creates one if one didn't\n// previously exist), using any options set in the config.\nfunction _initStorage$1(options) {\n    var self = this;\n    var dbInfo = {\n        db: null\n    };\n\n    if (options) {\n        for (var i in options) {\n            dbInfo[i] = typeof options[i] !== 'string' ? options[i].toString() : options[i];\n        }\n    }\n\n    var dbInfoPromise = new Promise$1(function (resolve, reject) {\n        // Open the database; the openDatabase API will automatically\n        // create it for us if it doesn't exist.\n        try {\n            dbInfo.db = openDatabase(dbInfo.name, String(dbInfo.version), dbInfo.description, dbInfo.size);\n        } catch (e) {\n            return reject(e);\n        }\n\n        // Create our key/value table if it doesn't exist.\n        dbInfo.db.transaction(function (t) {\n            createDbTable(t, dbInfo, function () {\n                self._dbInfo = dbInfo;\n                resolve();\n            }, function (t, error) {\n                reject(error);\n            });\n        }, reject);\n    });\n\n    dbInfo.serializer = localforageSerializer;\n    return dbInfoPromise;\n}\n\nfunction tryExecuteSql(t, dbInfo, sqlStatement, args, callback, errorCallback) {\n    t.executeSql(sqlStatement, args, callback, function (t, error) {\n        if (error.code === error.SYNTAX_ERR) {\n            t.executeSql('SELECT name FROM sqlite_master ' + \"WHERE type='table' AND name = ?\", [dbInfo.storeName], function (t, results) {\n                if (!results.rows.length) {\n                    // if the table is missing (was deleted)\n                    // re-create it table and retry\n                    createDbTable(t, dbInfo, function () {\n                        t.executeSql(sqlStatement, args, callback, errorCallback);\n                    }, errorCallback);\n                } else {\n                    errorCallback(t, error);\n                }\n            }, errorCallback);\n        } else {\n            errorCallback(t, error);\n        }\n    }, errorCallback);\n}\n\nfunction getItem$1(key, callback) {\n    var self = this;\n\n    key = normalizeKey(key);\n\n    var promise = new Promise$1(function (resolve, reject) {\n        self.ready().then(function () {\n            var dbInfo = self._dbInfo;\n            dbInfo.db.transaction(function (t) {\n                tryExecuteSql(t, dbInfo, 'SELECT * FROM ' + dbInfo.storeName + ' WHERE key = ? LIMIT 1', [key], function (t, results) {\n                    var result = results.rows.length ? results.rows.item(0).value : null;\n\n                    // Check to see if this is serialized content we need to\n                    // unpack.\n                    if (result) {\n                        result = dbInfo.serializer.deserialize(result);\n                    }\n\n                    resolve(result);\n                }, function (t, error) {\n                    reject(error);\n                });\n            });\n        })[\"catch\"](reject);\n    });\n\n    executeCallback(promise, callback);\n    return promise;\n}\n\nfunction iterate$1(iterator, callback) {\n    var self = this;\n\n    var promise = new Promise$1(function (resolve, reject) {\n        self.ready().then(function () {\n            var dbInfo = self._dbInfo;\n\n            dbInfo.db.transaction(function (t) {\n                tryExecuteSql(t, dbInfo, 'SELECT * FROM ' + dbInfo.storeName, [], function (t, results) {\n                    var rows = results.rows;\n                    var length = rows.length;\n\n                    for (var i = 0; i < length; i++) {\n                        var item = rows.item(i);\n                        var result = item.value;\n\n                        // Check to see if this is serialized content\n                        // we need to unpack.\n                        if (result) {\n                            result = dbInfo.serializer.deserialize(result);\n                        }\n\n                        result = iterator(result, item.key, i + 1);\n\n                        // void(0) prevents problems with redefinition\n                        // of `undefined`.\n                        if (result !== void 0) {\n                            resolve(result);\n                            return;\n                        }\n                    }\n\n                    resolve();\n                }, function (t, error) {\n                    reject(error);\n                });\n            });\n        })[\"catch\"](reject);\n    });\n\n    executeCallback(promise, callback);\n    return promise;\n}\n\nfunction _setItem(key, value, callback, retriesLeft) {\n    var self = this;\n\n    key = normalizeKey(key);\n\n    var promise = new Promise$1(function (resolve, reject) {\n        self.ready().then(function () {\n            // The localStorage API doesn't return undefined values in an\n            // \"expected\" way, so undefined is always cast to null in all\n            // drivers. See: https://github.com/mozilla/localForage/pull/42\n            if (value === undefined) {\n                value = null;\n            }\n\n            // Save the original value to pass to the callback.\n            var originalValue = value;\n\n            var dbInfo = self._dbInfo;\n            dbInfo.serializer.serialize(value, function (value, error) {\n                if (error) {\n                    reject(error);\n                } else {\n                    dbInfo.db.transaction(function (t) {\n                        tryExecuteSql(t, dbInfo, 'INSERT OR REPLACE INTO ' + dbInfo.storeName + ' ' + '(key, value) VALUES (?, ?)', [key, value], function () {\n                            resolve(originalValue);\n                        }, function (t, error) {\n                            reject(error);\n                        });\n                    }, function (sqlError) {\n                        // The transaction failed; check\n                        // to see if it's a quota error.\n                        if (sqlError.code === sqlError.QUOTA_ERR) {\n                            // We reject the callback outright for now, but\n                            // it's worth trying to re-run the transaction.\n                            // Even if the user accepts the prompt to use\n                            // more storage on Safari, this error will\n                            // be called.\n                            //\n                            // Try to re-run the transaction.\n                            if (retriesLeft > 0) {\n                                resolve(_setItem.apply(self, [key, originalValue, callback, retriesLeft - 1]));\n                                return;\n                            }\n                            reject(sqlError);\n                        }\n                    });\n                }\n            });\n        })[\"catch\"](reject);\n    });\n\n    executeCallback(promise, callback);\n    return promise;\n}\n\nfunction setItem$1(key, value, callback) {\n    return _setItem.apply(this, [key, value, callback, 1]);\n}\n\nfunction removeItem$1(key, callback) {\n    var self = this;\n\n    key = normalizeKey(key);\n\n    var promise = new Promise$1(function (resolve, reject) {\n        self.ready().then(function () {\n            var dbInfo = self._dbInfo;\n            dbInfo.db.transaction(function (t) {\n                tryExecuteSql(t, dbInfo, 'DELETE FROM ' + dbInfo.storeName + ' WHERE key = ?', [key], function () {\n                    resolve();\n                }, function (t, error) {\n                    reject(error);\n                });\n            });\n        })[\"catch\"](reject);\n    });\n\n    executeCallback(promise, callback);\n    return promise;\n}\n\n// Deletes every item in the table.\n// TODO: Find out if this resets the AUTO_INCREMENT number.\nfunction clear$1(callback) {\n    var self = this;\n\n    var promise = new Promise$1(function (resolve, reject) {\n        self.ready().then(function () {\n            var dbInfo = self._dbInfo;\n            dbInfo.db.transaction(function (t) {\n                tryExecuteSql(t, dbInfo, 'DELETE FROM ' + dbInfo.storeName, [], function () {\n                    resolve();\n                }, function (t, error) {\n                    reject(error);\n                });\n            });\n        })[\"catch\"](reject);\n    });\n\n    executeCallback(promise, callback);\n    return promise;\n}\n\n// Does a simple `COUNT(key)` to get the number of items stored in\n// localForage.\nfunction length$1(callback) {\n    var self = this;\n\n    var promise = new Promise$1(function (resolve, reject) {\n        self.ready().then(function () {\n            var dbInfo = self._dbInfo;\n            dbInfo.db.transaction(function (t) {\n                // Ahhh, SQL makes this one soooooo easy.\n                tryExecuteSql(t, dbInfo, 'SELECT COUNT(key) as c FROM ' + dbInfo.storeName, [], function (t, results) {\n                    var result = results.rows.item(0).c;\n                    resolve(result);\n                }, function (t, error) {\n                    reject(error);\n                });\n            });\n        })[\"catch\"](reject);\n    });\n\n    executeCallback(promise, callback);\n    return promise;\n}\n\n// Return the key located at key index X; essentially gets the key from a\n// `WHERE id = ?`. This is the most efficient way I can think to implement\n// this rarely-used (in my experience) part of the API, but it can seem\n// inconsistent, because we do `INSERT OR REPLACE INTO` on `setItem()`, so\n// the ID of each key will change every time it's updated. Perhaps a stored\n// procedure for the `setItem()` SQL would solve this problem?\n// TODO: Don't change ID on `setItem()`.\nfunction key$1(n, callback) {\n    var self = this;\n\n    var promise = new Promise$1(function (resolve, reject) {\n        self.ready().then(function () {\n            var dbInfo = self._dbInfo;\n            dbInfo.db.transaction(function (t) {\n                tryExecuteSql(t, dbInfo, 'SELECT key FROM ' + dbInfo.storeName + ' WHERE id = ? LIMIT 1', [n + 1], function (t, results) {\n                    var result = results.rows.length ? results.rows.item(0).key : null;\n                    resolve(result);\n                }, function (t, error) {\n                    reject(error);\n                });\n            });\n        })[\"catch\"](reject);\n    });\n\n    executeCallback(promise, callback);\n    return promise;\n}\n\nfunction keys$1(callback) {\n    var self = this;\n\n    var promise = new Promise$1(function (resolve, reject) {\n        self.ready().then(function () {\n            var dbInfo = self._dbInfo;\n            dbInfo.db.transaction(function (t) {\n                tryExecuteSql(t, dbInfo, 'SELECT key FROM ' + dbInfo.storeName, [], function (t, results) {\n                    var keys = [];\n\n                    for (var i = 0; i < results.rows.length; i++) {\n                        keys.push(results.rows.item(i).key);\n                    }\n\n                    resolve(keys);\n                }, function (t, error) {\n                    reject(error);\n                });\n            });\n        })[\"catch\"](reject);\n    });\n\n    executeCallback(promise, callback);\n    return promise;\n}\n\n// https://www.w3.org/TR/webdatabase/#databases\n// > There is no way to enumerate or delete the databases available for an origin from this API.\nfunction getAllStoreNames(db) {\n    return new Promise$1(function (resolve, reject) {\n        db.transaction(function (t) {\n            t.executeSql('SELECT name FROM sqlite_master ' + \"WHERE type='table' AND name <> '__WebKitDatabaseInfoTable__'\", [], function (t, results) {\n                var storeNames = [];\n\n                for (var i = 0; i < results.rows.length; i++) {\n                    storeNames.push(results.rows.item(i).name);\n                }\n\n                resolve({\n                    db: db,\n                    storeNames: storeNames\n                });\n            }, function (t, error) {\n                reject(error);\n            });\n        }, function (sqlError) {\n            reject(sqlError);\n        });\n    });\n}\n\nfunction dropInstance$1(options, callback) {\n    callback = getCallback.apply(this, arguments);\n\n    var currentConfig = this.config();\n    options = typeof options !== 'function' && options || {};\n    if (!options.name) {\n        options.name = options.name || currentConfig.name;\n        options.storeName = options.storeName || currentConfig.storeName;\n    }\n\n    var self = this;\n    var promise;\n    if (!options.name) {\n        promise = Promise$1.reject('Invalid arguments');\n    } else {\n        promise = new Promise$1(function (resolve) {\n            var db;\n            if (options.name === currentConfig.name) {\n                // use the db reference of the current instance\n                db = self._dbInfo.db;\n            } else {\n                db = openDatabase(options.name, '', '', 0);\n            }\n\n            if (!options.storeName) {\n                // drop all database tables\n                resolve(getAllStoreNames(db));\n            } else {\n                resolve({\n                    db: db,\n                    storeNames: [options.storeName]\n                });\n            }\n        }).then(function (operationInfo) {\n            return new Promise$1(function (resolve, reject) {\n                operationInfo.db.transaction(function (t) {\n                    function dropTable(storeName) {\n                        return new Promise$1(function (resolve, reject) {\n                            t.executeSql('DROP TABLE IF EXISTS ' + storeName, [], function () {\n                                resolve();\n                            }, function (t, error) {\n                                reject(error);\n                            });\n                        });\n                    }\n\n                    var operations = [];\n                    for (var i = 0, len = operationInfo.storeNames.length; i < len; i++) {\n                        operations.push(dropTable(operationInfo.storeNames[i]));\n                    }\n\n                    Promise$1.all(operations).then(function () {\n                        resolve();\n                    })[\"catch\"](function (e) {\n                        reject(e);\n                    });\n                }, function (sqlError) {\n                    reject(sqlError);\n                });\n            });\n        });\n    }\n\n    executeCallback(promise, callback);\n    return promise;\n}\n\nvar webSQLStorage = {\n    _driver: 'webSQLStorage',\n    _initStorage: _initStorage$1,\n    _support: isWebSQLValid(),\n    iterate: iterate$1,\n    getItem: getItem$1,\n    setItem: setItem$1,\n    removeItem: removeItem$1,\n    clear: clear$1,\n    length: length$1,\n    key: key$1,\n    keys: keys$1,\n    dropInstance: dropInstance$1\n};\n\nfunction isLocalStorageValid() {\n    try {\n        return typeof localStorage !== 'undefined' && 'setItem' in localStorage &&\n        // in IE8 typeof localStorage.setItem === 'object'\n        !!localStorage.setItem;\n    } catch (e) {\n        return false;\n    }\n}\n\nfunction _getKeyPrefix(options, defaultConfig) {\n    var keyPrefix = options.name + '/';\n\n    if (options.storeName !== defaultConfig.storeName) {\n        keyPrefix += options.storeName + '/';\n    }\n    return keyPrefix;\n}\n\n// Check if localStorage throws when saving an item\nfunction checkIfLocalStorageThrows() {\n    var localStorageTestKey = '_localforage_support_test';\n\n    try {\n        localStorage.setItem(localStorageTestKey, true);\n        localStorage.removeItem(localStorageTestKey);\n\n        return false;\n    } catch (e) {\n        return true;\n    }\n}\n\n// Check if localStorage is usable and allows to save an item\n// This method checks if localStorage is usable in Safari Private Browsing\n// mode, or in any other case where the available quota for localStorage\n// is 0 and there wasn't any saved items yet.\nfunction _isLocalStorageUsable() {\n    return !checkIfLocalStorageThrows() || localStorage.length > 0;\n}\n\n// Config the localStorage backend, using options set in the config.\nfunction _initStorage$2(options) {\n    var self = this;\n    var dbInfo = {};\n    if (options) {\n        for (var i in options) {\n            dbInfo[i] = options[i];\n        }\n    }\n\n    dbInfo.keyPrefix = _getKeyPrefix(options, self._defaultConfig);\n\n    if (!_isLocalStorageUsable()) {\n        return Promise$1.reject();\n    }\n\n    self._dbInfo = dbInfo;\n    dbInfo.serializer = localforageSerializer;\n\n    return Promise$1.resolve();\n}\n\n// Remove all keys from the datastore, effectively destroying all data in\n// the app's key/value store!\nfunction clear$2(callback) {\n    var self = this;\n    var promise = self.ready().then(function () {\n        var keyPrefix = self._dbInfo.keyPrefix;\n\n        for (var i = localStorage.length - 1; i >= 0; i--) {\n            var key = localStorage.key(i);\n\n            if (key.indexOf(keyPrefix) === 0) {\n                localStorage.removeItem(key);\n            }\n        }\n    });\n\n    executeCallback(promise, callback);\n    return promise;\n}\n\n// Retrieve an item from the store. Unlike the original async_storage\n// library in Gaia, we don't modify return values at all. If a key's value\n// is `undefined`, we pass that value to the callback function.\nfunction getItem$2(key, callback) {\n    var self = this;\n\n    key = normalizeKey(key);\n\n    var promise = self.ready().then(function () {\n        var dbInfo = self._dbInfo;\n        var result = localStorage.getItem(dbInfo.keyPrefix + key);\n\n        // If a result was found, parse it from the serialized\n        // string into a JS object. If result isn't truthy, the key\n        // is likely undefined and we'll pass it straight to the\n        // callback.\n        if (result) {\n            result = dbInfo.serializer.deserialize(result);\n        }\n\n        return result;\n    });\n\n    executeCallback(promise, callback);\n    return promise;\n}\n\n// Iterate over all items in the store.\nfunction iterate$2(iterator, callback) {\n    var self = this;\n\n    var promise = self.ready().then(function () {\n        var dbInfo = self._dbInfo;\n        var keyPrefix = dbInfo.keyPrefix;\n        var keyPrefixLength = keyPrefix.length;\n        var length = localStorage.length;\n\n        // We use a dedicated iterator instead of the `i` variable below\n        // so other keys we fetch in localStorage aren't counted in\n        // the `iterationNumber` argument passed to the `iterate()`\n        // callback.\n        //\n        // See: github.com/mozilla/localForage/pull/435#discussion_r38061530\n        var iterationNumber = 1;\n\n        for (var i = 0; i < length; i++) {\n            var key = localStorage.key(i);\n            if (key.indexOf(keyPrefix) !== 0) {\n                continue;\n            }\n            var value = localStorage.getItem(key);\n\n            // If a result was found, parse it from the serialized\n            // string into a JS object. If result isn't truthy, the\n            // key is likely undefined and we'll pass it straight\n            // to the iterator.\n            if (value) {\n                value = dbInfo.serializer.deserialize(value);\n            }\n\n            value = iterator(value, key.substring(keyPrefixLength), iterationNumber++);\n\n            if (value !== void 0) {\n                return value;\n            }\n        }\n    });\n\n    executeCallback(promise, callback);\n    return promise;\n}\n\n// Same as localStorage's key() method, except takes a callback.\nfunction key$2(n, callback) {\n    var self = this;\n    var promise = self.ready().then(function () {\n        var dbInfo = self._dbInfo;\n        var result;\n        try {\n            result = localStorage.key(n);\n        } catch (error) {\n            result = null;\n        }\n\n        // Remove the prefix from the key, if a key is found.\n        if (result) {\n            result = result.substring(dbInfo.keyPrefix.length);\n        }\n\n        return result;\n    });\n\n    executeCallback(promise, callback);\n    return promise;\n}\n\nfunction keys$2(callback) {\n    var self = this;\n    var promise = self.ready().then(function () {\n        var dbInfo = self._dbInfo;\n        var length = localStorage.length;\n        var keys = [];\n\n        for (var i = 0; i < length; i++) {\n            var itemKey = localStorage.key(i);\n            if (itemKey.indexOf(dbInfo.keyPrefix) === 0) {\n                keys.push(itemKey.substring(dbInfo.keyPrefix.length));\n            }\n        }\n\n        return keys;\n    });\n\n    executeCallback(promise, callback);\n    return promise;\n}\n\n// Supply the number of keys in the datastore to the callback function.\nfunction length$2(callback) {\n    var self = this;\n    var promise = self.keys().then(function (keys) {\n        return keys.length;\n    });\n\n    executeCallback(promise, callback);\n    return promise;\n}\n\n// Remove an item from the store, nice and simple.\nfunction removeItem$2(key, callback) {\n    var self = this;\n\n    key = normalizeKey(key);\n\n    var promise = self.ready().then(function () {\n        var dbInfo = self._dbInfo;\n        localStorage.removeItem(dbInfo.keyPrefix + key);\n    });\n\n    executeCallback(promise, callback);\n    return promise;\n}\n\n// Set a key's value and run an optional callback once the value is set.\n// Unlike Gaia's implementation, the callback function is passed the value,\n// in case you want to operate on that value only after you're sure it\n// saved, or something like that.\nfunction setItem$2(key, value, callback) {\n    var self = this;\n\n    key = normalizeKey(key);\n\n    var promise = self.ready().then(function () {\n        // Convert undefined values to null.\n        // https://github.com/mozilla/localForage/pull/42\n        if (value === undefined) {\n            value = null;\n        }\n\n        // Save the original value to pass to the callback.\n        var originalValue = value;\n\n        return new Promise$1(function (resolve, reject) {\n            var dbInfo = self._dbInfo;\n            dbInfo.serializer.serialize(value, function (value, error) {\n                if (error) {\n                    reject(error);\n                } else {\n                    try {\n                        localStorage.setItem(dbInfo.keyPrefix + key, value);\n                        resolve(originalValue);\n                    } catch (e) {\n                        // localStorage capacity exceeded.\n                        // TODO: Make this a specific error/event.\n                        if (e.name === 'QuotaExceededError' || e.name === 'NS_ERROR_DOM_QUOTA_REACHED') {\n                            reject(e);\n                        }\n                        reject(e);\n                    }\n                }\n            });\n        });\n    });\n\n    executeCallback(promise, callback);\n    return promise;\n}\n\nfunction dropInstance$2(options, callback) {\n    callback = getCallback.apply(this, arguments);\n\n    options = typeof options !== 'function' && options || {};\n    if (!options.name) {\n        var currentConfig = this.config();\n        options.name = options.name || currentConfig.name;\n        options.storeName = options.storeName || currentConfig.storeName;\n    }\n\n    var self = this;\n    var promise;\n    if (!options.name) {\n        promise = Promise$1.reject('Invalid arguments');\n    } else {\n        promise = new Promise$1(function (resolve) {\n            if (!options.storeName) {\n                resolve(options.name + '/');\n            } else {\n                resolve(_getKeyPrefix(options, self._defaultConfig));\n            }\n        }).then(function (keyPrefix) {\n            for (var i = localStorage.length - 1; i >= 0; i--) {\n                var key = localStorage.key(i);\n\n                if (key.indexOf(keyPrefix) === 0) {\n                    localStorage.removeItem(key);\n                }\n            }\n        });\n    }\n\n    executeCallback(promise, callback);\n    return promise;\n}\n\nvar localStorageWrapper = {\n    _driver: 'localStorageWrapper',\n    _initStorage: _initStorage$2,\n    _support: isLocalStorageValid(),\n    iterate: iterate$2,\n    getItem: getItem$2,\n    setItem: setItem$2,\n    removeItem: removeItem$2,\n    clear: clear$2,\n    length: length$2,\n    key: key$2,\n    keys: keys$2,\n    dropInstance: dropInstance$2\n};\n\nvar sameValue = function sameValue(x, y) {\n    return x === y || typeof x === 'number' && typeof y === 'number' && isNaN(x) && isNaN(y);\n};\n\nvar includes = function includes(array, searchElement) {\n    var len = array.length;\n    var i = 0;\n    while (i < len) {\n        if (sameValue(array[i], searchElement)) {\n            return true;\n        }\n        i++;\n    }\n\n    return false;\n};\n\nvar isArray = Array.isArray || function (arg) {\n    return Object.prototype.toString.call(arg) === '[object Array]';\n};\n\n// Drivers are stored here when `defineDriver()` is called.\n// They are shared across all instances of localForage.\nvar DefinedDrivers = {};\n\nvar DriverSupport = {};\n\nvar DefaultDrivers = {\n    INDEXEDDB: asyncStorage,\n    WEBSQL: webSQLStorage,\n    LOCALSTORAGE: localStorageWrapper\n};\n\nvar DefaultDriverOrder = [DefaultDrivers.INDEXEDDB._driver, DefaultDrivers.WEBSQL._driver, DefaultDrivers.LOCALSTORAGE._driver];\n\nvar OptionalDriverMethods = ['dropInstance'];\n\nvar LibraryMethods = ['clear', 'getItem', 'iterate', 'key', 'keys', 'length', 'removeItem', 'setItem'].concat(OptionalDriverMethods);\n\nvar DefaultConfig = {\n    description: '',\n    driver: DefaultDriverOrder.slice(),\n    name: 'localforage',\n    // Default DB size is _JUST UNDER_ 5MB, as it's the highest size\n    // we can use without a prompt.\n    size: 4980736,\n    storeName: 'keyvaluepairs',\n    version: 1.0\n};\n\nfunction callWhenReady(localForageInstance, libraryMethod) {\n    localForageInstance[libraryMethod] = function () {\n        var _args = arguments;\n        return localForageInstance.ready().then(function () {\n            return localForageInstance[libraryMethod].apply(localForageInstance, _args);\n        });\n    };\n}\n\nfunction extend() {\n    for (var i = 1; i < arguments.length; i++) {\n        var arg = arguments[i];\n\n        if (arg) {\n            for (var _key in arg) {\n                if (arg.hasOwnProperty(_key)) {\n                    if (isArray(arg[_key])) {\n                        arguments[0][_key] = arg[_key].slice();\n                    } else {\n                        arguments[0][_key] = arg[_key];\n                    }\n                }\n            }\n        }\n    }\n\n    return arguments[0];\n}\n\nvar LocalForage = function () {\n    function LocalForage(options) {\n        _classCallCheck(this, LocalForage);\n\n        for (var driverTypeKey in DefaultDrivers) {\n            if (DefaultDrivers.hasOwnProperty(driverTypeKey)) {\n                var driver = DefaultDrivers[driverTypeKey];\n                var driverName = driver._driver;\n                this[driverTypeKey] = driverName;\n\n                if (!DefinedDrivers[driverName]) {\n                    // we don't need to wait for the promise,\n                    // since the default drivers can be defined\n                    // in a blocking manner\n                    this.defineDriver(driver);\n                }\n            }\n        }\n\n        this._defaultConfig = extend({}, DefaultConfig);\n        this._config = extend({}, this._defaultConfig, options);\n        this._driverSet = null;\n        this._initDriver = null;\n        this._ready = false;\n        this._dbInfo = null;\n\n        this._wrapLibraryMethodsWithReady();\n        this.setDriver(this._config.driver)[\"catch\"](function () {});\n    }\n\n    // Set any config values for localForage; can be called anytime before\n    // the first API call (e.g. `getItem`, `setItem`).\n    // We loop through options so we don't overwrite existing config\n    // values.\n\n\n    LocalForage.prototype.config = function config(options) {\n        // If the options argument is an object, we use it to set values.\n        // Otherwise, we return either a specified config value or all\n        // config values.\n        if ((typeof options === 'undefined' ? 'undefined' : _typeof(options)) === 'object') {\n            // If localforage is ready and fully initialized, we can't set\n            // any new configuration values. Instead, we return an error.\n            if (this._ready) {\n                return new Error(\"Can't call config() after localforage \" + 'has been used.');\n            }\n\n            for (var i in options) {\n                if (i === 'storeName') {\n                    options[i] = options[i].replace(/\\W/g, '_');\n                }\n\n                if (i === 'version' && typeof options[i] !== 'number') {\n                    return new Error('Database version must be a number.');\n                }\n\n                this._config[i] = options[i];\n            }\n\n            // after all config options are set and\n            // the driver option is used, try setting it\n            if ('driver' in options && options.driver) {\n                return this.setDriver(this._config.driver);\n            }\n\n            return true;\n        } else if (typeof options === 'string') {\n            return this._config[options];\n        } else {\n            return this._config;\n        }\n    };\n\n    // Used to define a custom driver, shared across all instances of\n    // localForage.\n\n\n    LocalForage.prototype.defineDriver = function defineDriver(driverObject, callback, errorCallback) {\n        var promise = new Promise$1(function (resolve, reject) {\n            try {\n                var driverName = driverObject._driver;\n                var complianceError = new Error('Custom driver not compliant; see ' + 'https://mozilla.github.io/localForage/#definedriver');\n\n                // A driver name should be defined and not overlap with the\n                // library-defined, default drivers.\n                if (!driverObject._driver) {\n                    reject(complianceError);\n                    return;\n                }\n\n                var driverMethods = LibraryMethods.concat('_initStorage');\n                for (var i = 0, len = driverMethods.length; i < len; i++) {\n                    var driverMethodName = driverMethods[i];\n\n                    // when the property is there,\n                    // it should be a method even when optional\n                    var isRequired = !includes(OptionalDriverMethods, driverMethodName);\n                    if ((isRequired || driverObject[driverMethodName]) && typeof driverObject[driverMethodName] !== 'function') {\n                        reject(complianceError);\n                        return;\n                    }\n                }\n\n                var configureMissingMethods = function configureMissingMethods() {\n                    var methodNotImplementedFactory = function methodNotImplementedFactory(methodName) {\n                        return function () {\n                            var error = new Error('Method ' + methodName + ' is not implemented by the current driver');\n                            var promise = Promise$1.reject(error);\n                            executeCallback(promise, arguments[arguments.length - 1]);\n                            return promise;\n                        };\n                    };\n\n                    for (var _i = 0, _len = OptionalDriverMethods.length; _i < _len; _i++) {\n                        var optionalDriverMethod = OptionalDriverMethods[_i];\n                        if (!driverObject[optionalDriverMethod]) {\n                            driverObject[optionalDriverMethod] = methodNotImplementedFactory(optionalDriverMethod);\n                        }\n                    }\n                };\n\n                configureMissingMethods();\n\n                var setDriverSupport = function setDriverSupport(support) {\n                    if (DefinedDrivers[driverName]) {\n                        console.info('Redefining LocalForage driver: ' + driverName);\n                    }\n                    DefinedDrivers[driverName] = driverObject;\n                    DriverSupport[driverName] = support;\n                    // don't use a then, so that we can define\n                    // drivers that have simple _support methods\n                    // in a blocking manner\n                    resolve();\n                };\n\n                if ('_support' in driverObject) {\n                    if (driverObject._support && typeof driverObject._support === 'function') {\n                        driverObject._support().then(setDriverSupport, reject);\n                    } else {\n                        setDriverSupport(!!driverObject._support);\n                    }\n                } else {\n                    setDriverSupport(true);\n                }\n            } catch (e) {\n                reject(e);\n            }\n        });\n\n        executeTwoCallbacks(promise, callback, errorCallback);\n        return promise;\n    };\n\n    LocalForage.prototype.driver = function driver() {\n        return this._driver || null;\n    };\n\n    LocalForage.prototype.getDriver = function getDriver(driverName, callback, errorCallback) {\n        var getDriverPromise = DefinedDrivers[driverName] ? Promise$1.resolve(DefinedDrivers[driverName]) : Promise$1.reject(new Error('Driver not found.'));\n\n        executeTwoCallbacks(getDriverPromise, callback, errorCallback);\n        return getDriverPromise;\n    };\n\n    LocalForage.prototype.getSerializer = function getSerializer(callback) {\n        var serializerPromise = Promise$1.resolve(localforageSerializer);\n        executeTwoCallbacks(serializerPromise, callback);\n        return serializerPromise;\n    };\n\n    LocalForage.prototype.ready = function ready(callback) {\n        var self = this;\n\n        var promise = self._driverSet.then(function () {\n            if (self._ready === null) {\n                self._ready = self._initDriver();\n            }\n\n            return self._ready;\n        });\n\n        executeTwoCallbacks(promise, callback, callback);\n        return promise;\n    };\n\n    LocalForage.prototype.setDriver = function setDriver(drivers, callback, errorCallback) {\n        var self = this;\n\n        if (!isArray(drivers)) {\n            drivers = [drivers];\n        }\n\n        var supportedDrivers = this._getSupportedDrivers(drivers);\n\n        function setDriverToConfig() {\n            self._config.driver = self.driver();\n        }\n\n        function extendSelfWithDriver(driver) {\n            self._extend(driver);\n            setDriverToConfig();\n\n            self._ready = self._initStorage(self._config);\n            return self._ready;\n        }\n\n        function initDriver(supportedDrivers) {\n            return function () {\n                var currentDriverIndex = 0;\n\n                function driverPromiseLoop() {\n                    while (currentDriverIndex < supportedDrivers.length) {\n                        var driverName = supportedDrivers[currentDriverIndex];\n                        currentDriverIndex++;\n\n                        self._dbInfo = null;\n                        self._ready = null;\n\n                        return self.getDriver(driverName).then(extendSelfWithDriver)[\"catch\"](driverPromiseLoop);\n                    }\n\n                    setDriverToConfig();\n                    var error = new Error('No available storage method found.');\n                    self._driverSet = Promise$1.reject(error);\n                    return self._driverSet;\n                }\n\n                return driverPromiseLoop();\n            };\n        }\n\n        // There might be a driver initialization in progress\n        // so wait for it to finish in order to avoid a possible\n        // race condition to set _dbInfo\n        var oldDriverSetDone = this._driverSet !== null ? this._driverSet[\"catch\"](function () {\n            return Promise$1.resolve();\n        }) : Promise$1.resolve();\n\n        this._driverSet = oldDriverSetDone.then(function () {\n            var driverName = supportedDrivers[0];\n            self._dbInfo = null;\n            self._ready = null;\n\n            return self.getDriver(driverName).then(function (driver) {\n                self._driver = driver._driver;\n                setDriverToConfig();\n                self._wrapLibraryMethodsWithReady();\n                self._initDriver = initDriver(supportedDrivers);\n            });\n        })[\"catch\"](function () {\n            setDriverToConfig();\n            var error = new Error('No available storage method found.');\n            self._driverSet = Promise$1.reject(error);\n            return self._driverSet;\n        });\n\n        executeTwoCallbacks(this._driverSet, callback, errorCallback);\n        return this._driverSet;\n    };\n\n    LocalForage.prototype.supports = function supports(driverName) {\n        return !!DriverSupport[driverName];\n    };\n\n    LocalForage.prototype._extend = function _extend(libraryMethodsAndProperties) {\n        extend(this, libraryMethodsAndProperties);\n    };\n\n    LocalForage.prototype._getSupportedDrivers = function _getSupportedDrivers(drivers) {\n        var supportedDrivers = [];\n        for (var i = 0, len = drivers.length; i < len; i++) {\n            var driverName = drivers[i];\n            if (this.supports(driverName)) {\n                supportedDrivers.push(driverName);\n            }\n        }\n        return supportedDrivers;\n    };\n\n    LocalForage.prototype._wrapLibraryMethodsWithReady = function _wrapLibraryMethodsWithReady() {\n        // Add a stub for each driver API method that delays the call to the\n        // corresponding driver method until localForage is ready. These stubs\n        // will be replaced by the driver methods as soon as the driver is\n        // loaded, so there is no performance impact.\n        for (var i = 0, len = LibraryMethods.length; i < len; i++) {\n            callWhenReady(this, LibraryMethods[i]);\n        }\n    };\n\n    LocalForage.prototype.createInstance = function createInstance(options) {\n        return new LocalForage(options);\n    };\n\n    return LocalForage;\n}();\n\n// The actual localForage object that we expose as a module or via a\n// global. It's extended by pulling in one of our other libraries.\n\n\nvar localforage_js = new LocalForage();\n\nmodule.exports = localforage_js;\n\n},{\"3\":3}]},{},[4])(4)\n});\n","'use strict';\nvar fails = require('../internals/fails');\n\nmodule.exports = function (METHOD_NAME, argument) {\n  var method = [][METHOD_NAME];\n  return !!method && fails(function () {\n    // eslint-disable-next-line no-useless-call -- required for testing\n    method.call(null, argument || function () { return 1; }, 1);\n  });\n};\n","var render = function () {var _vm=this;var _h=_vm.$createElement;var _c=_vm._self._c||_h;return _c('div',[_c('div',{staticClass:\"ebookdiv\"},[_c('div',{staticClass:\"ebook\"},[_c('title-bar',{staticClass:\"titlebar\",attrs:{\"ifTitleAndMenuShow\":_vm.ifTitleAndMenuShow}},[_vm._v(_vm._s(_vm.bookname))]),_c('div',{staticClass:\"read-wrapper\"},[_c('div',{staticClass:\"read\",attrs:{\"id\":\"read\"}}),_c('div',{staticClass:\"width: 200px;\\n                              color: #00cccc;\"},[_c('div',{staticClass:\"left\",on:{\"click\":_vm.prevPage}}),_c('div',{staticClass:\"center\",on:{\"click\":_vm.toggleTitleAndMenu}}),_c('div',{staticClass:\"right\",on:{\"click\":_vm.nextPage}})])]),_c('div',{staticClass:\"btndiv\"},[_c('span',{staticClass:\"btndown\",on:{\"click\":_vm.nextPage}},[_vm._v(\"下一页\")]),_c('span',{staticClass:\"btnup\",on:{\"click\":_vm.prevPage}},[_vm._v(\"上一页|\")])]),_c('menu-bar',{ref:\"menuBar\",attrs:{\"ifTitleAndMenuShow\":_vm.ifTitleAndMenuShow,\"fontSizeList\":_vm.fontSizeList,\"defaultFontSize\":_vm.defaultFontSize,\"themeList\":_vm.themeList,\"defaultTheme\":_vm.defaultTheme,\"bookAvailable\":_vm.bookAvailable,\"navigation\":_vm.navigation,\"parentProgress\":_vm.progress},on:{\"getCurrentLocation\":_vm.getCurrentLocation,\"setFontSize\":_vm.setFontSize,\"setTheme\":_vm.setTheme,\"onProgressChange\":_vm.onProgressChange,\"jumpTo\":_vm.jumpTo}})],1)])])}\nvar staticRenderFns = []\n\nexport { render, staticRenderFns }","import Book from \"./book\";\nimport EpubCFI from \"./epubcfi\";\nimport Rendition from \"./rendition\";\nimport Contents from \"./contents\";\nimport Layout from \"./layout\";\nimport ePub from \"./epub\";\n\nexport default ePub;\nexport {\n\tBook,\n\tEpubCFI,\n\tRendition,\n\tContents,\n\tLayout\n};\n","<template>\r\n  <div>\r\n    <div class=\"ebookdiv\">\r\n      \r\n            <div class=\"ebook\">\r\n                  <title-bar class=\"titlebar\" :ifTitleAndMenuShow=\"ifTitleAndMenuShow\">{{bookname}}</title-bar>\r\n                      <div class=\"read-wrapper\">\r\n                          <div class=\"read\" id=\"read\"></div>\r\n                          <div class=\"width: 200px;\r\n                                color: #00cccc;\">\r\n                              <div class=\"left\" @click=\"prevPage\"></div>\r\n                              <div class=\"center\" @click=\"toggleTitleAndMenu\"></div>\r\n                              <div class=\"right\" @click=\"nextPage\"></div>\r\n                          </div>\r\n                      </div>\r\n\r\n                      <div class=\"btndiv\">\r\n                      <span class=\"btndown\" @click=\"nextPage\">下一页</span>\r\n                      \r\n                      <span class=\"btnup\" @click=\"prevPage\">上一页|</span>  \r\n                     \r\n                    </div>\r\n                      <menu-bar :ifTitleAndMenuShow=\"ifTitleAndMenuShow\" \r\n                                @getCurrentLocation=\"getCurrentLocation\"\r\n                                :fontSizeList = \"fontSizeList\" \r\n                                :defaultFontSize=\"defaultFontSize\"\r\n                                @setFontSize=\"setFontSize\" \r\n                                :themeList=\"themeList\" \r\n                                :defaultTheme=\"defaultTheme\"\r\n                                @setTheme = \"setTheme\" \r\n                                :bookAvailable = \"bookAvailable\" \r\n                                @onProgressChange = \"onProgressChange\"\r\n                                @jumpTo=\"jumpTo\"\r\n                                :navigation = \"navigation\"\r\n                                :parentProgress = \"progress\"\r\n                                ref=\"menuBar\">\r\n                        </menu-bar>\r\n                  </div>\r\n    </div>\r\n\r\n  </div>\r\n</template>\r\n\r\n<script>\r\n// const DOWNLOAD_URL ='http://peopleimg.img-cn-beijing.aliyuncs.com/2019/04/10/7b23076b4a35436c18b3e0d233112b6c8706.epub'9787559841483;\r\n\r\nimport Epub from 'epubjs';\r\nimport $ from 'jquery';\r\nexport default {\r\n  name: \"app\",\r\n  data() {\r\n    return {\r\n      data: \"\",\r\n      page: 1,\r\n      dataSize: 1,\r\n      isbn:this.$route.query.isbn,\r\n      bookname:this.$route.query.bookname,\r\n    };\r\n  },\r\n  methods: {\r\n    prevPage(){\r\n            // Rendition.prev\r\n            if(this.rendition){\r\n                this.rendition.prev().then(()=>{\r\n                   this.showProgress()\r\n                })\r\n            }\r\n        },\r\n\r\n        nextPage(){\r\n            // Rendition.next\r\n            if(this.rendition){\r\n                this.rendition.next().then(()=>{\r\n                   this.showProgress()\r\n                })\r\n            }\r\n        },\r\n            // 电子书的解析和渲染\r\n            showEpub(){\r\n            // 生成book,Rendition,\r\n            const DOWNLOAD_URL = 'http://api.xuelintianxia.com/res/epub/' + this.isbn +'.epub';\r\n            console.log(\"路径\",DOWNLOAD_URL);\r\n            this.book = new Epub(DOWNLOAD_URL)\r\n            this.rendition = this.book.renderTo('read',{\r\n                width:'1200px',\r\n                height:'700px'\r\n            })\r\n            // 通过Rendition.display渲染电子书\r\n            this.rendition.display()\r\n            // 获取Theme对象\r\n            this.themes = this.rendition.themes\r\n            // 设置默认字体\r\n            this.setFontSize(this.defaultFontSize)\r\n            // this.themes.register(name,styles)\r\n            this.registerTheme()\r\n            // this.themes.select(name)\r\n            this.setTheme(this.defaultTheme)\r\n            // 获取locations对象 epubjs的钩子函数实现\r\n            this.book.ready.then(()=>{\r\n                this.navigation = this.book.navigation\r\n                //console.log(this.navigation.toc);\r\n                var $select=document.getElementById('toc');\r\n                var docfrag=document.createDocumentFragment();\r\n                this.navigation.toc.forEach(function(chapter){\r\n                  var option=document.createElement(\"option\");\r\n                  option.textContent=chapter.label;\r\n                  option.ref=chapter.href;\r\n\r\n                  //var option=document.createElement(\"a\");\r\n                  //option.setAttribute('href',chapter.href);\r\n                  //option.textContent=chapter.label;\r\n\r\n                  //console.log(option);\r\n                  docfrag.appendChild(option);\r\n                  \r\n                })\r\n                $select.appendChild(docfrag);\r\n                //$select.onchange=this.jumpTo();\r\n                $select.onchange=function(){\r\n                  console.log('切换目录！');\r\n                  var index=$select.selectedIndex;\r\n                  var url=$select.options[index].ref;\r\n                  console.log(url);\r\n                 // this.rendition.display(url);\r\n                  //jumpTo(url);\r\n                    \r\n                  //this.rendition.display();\r\n                  //return false;\r\n                }\r\n               \r\n                return this.book.locations.generate()\r\n            }).then(result=>{\r\n                // console.log(result);\r\n                this.locations = this.book.locations\r\n                this.bookAvailable = true\r\n            })\r\n        }\r\n  },\r\n  created() {\r\n    this.showEpub();\r\n    this.$http\r\n      .get(`${this.$store.state.baseurl}/api/readbook?id=1&page=${this.page}`)\r\n      .then((res) => {\r\n        const json = res.data;\r\n        const obj = JSON.parse(json);\r\n        this.data = obj.data;\r\n        this.page = obj.page;\r\n        this.dataSize = obj.dataSize;\r\n      });\r\n  },\r\n};\r\n</script>\r\n\r\n<style scoped lang=\"scss\">\r\n.titlebar{\r\n  font-size: 30px;\r\n  margin-top: 50px;\r\n}\r\n.ebookdiv{\r\n  margin-top: 25px;\r\n}\r\n.read {\r\n  width: 1200px;\r\n  margin: 0 auto;\r\n  background-color: #ffffff;\r\n}\r\n.btndiv{\r\n  width: 1200px;\r\n  margin: 0 auto;\r\n  padding-bottom: 50px;\r\n  .btnup{\r\n   float: right;\r\n   cursor: pointer;\r\n}\r\n.btndown{\r\n  float: right;\r\n  cursor: pointer;\r\n}\r\n}\r\n\r\n.ebook{\r\n    position: relative;\r\n    .read-wrapper{\r\n        .mask{\r\n            position: absolute;\r\n            display: flex;\r\n            top: 0;\r\n            left: 0;\r\n            width: 80%;\r\n            height: 70%;\r\n            z-index: 9;\r\n            .left{\r\n                flex: 0 0 px2rem(100);\r\n                width: 200px;\r\n                color: #00cccc;\r\n                \r\n            }\r\n            .center{\r\n                flex: 1;\r\n                \r\n            }\r\n            .right{\r\n                flex: 0 0 px2rem(100);\r\n                width: 200px;\r\n                color: #00cccc;\r\n               \r\n            }\r\n        }\r\n    }\r\n}\r\n</style>\r\n","import mod from \"-!../../node_modules/cache-loader/dist/cjs.js??ref--12-0!../../node_modules/thread-loader/dist/cjs.js!../../node_modules/babel-loader/lib/index.js!../../node_modules/cache-loader/dist/cjs.js??ref--0-0!../../node_modules/vue-loader/lib/index.js??vue-loader-options!./readBook.vue?vue&type=script&lang=js&\"; export default mod; export * from \"-!../../node_modules/cache-loader/dist/cjs.js??ref--12-0!../../node_modules/thread-loader/dist/cjs.js!../../node_modules/babel-loader/lib/index.js!../../node_modules/cache-loader/dist/cjs.js??ref--0-0!../../node_modules/vue-loader/lib/index.js??vue-loader-options!./readBook.vue?vue&type=script&lang=js&\"","import { render, staticRenderFns } from \"./readBook.vue?vue&type=template&id=87140528&scoped=true&\"\nimport script from \"./readBook.vue?vue&type=script&lang=js&\"\nexport * from \"./readBook.vue?vue&type=script&lang=js&\"\nimport style0 from \"./readBook.vue?vue&type=style&index=0&id=87140528&scoped=true&lang=scss&\"\n\n\n/* normalize component */\nimport normalizer from \"!../../node_modules/vue-loader/lib/runtime/componentNormalizer.js\"\nvar component = normalizer(\n  script,\n  render,\n  staticRenderFns,\n  false,\n  null,\n  \"87140528\",\n  null\n  \n)\n\nexport default component.exports","import {defer, isXml, parse} from \"./core\";\nimport Path from \"./path\";\n\nfunction request(url, type, withCredentials, headers) {\n\tvar supportsURL = (typeof window != \"undefined\") ? window.URL : false; // TODO: fallback for url if window isn't defined\n\tvar BLOB_RESPONSE = supportsURL ? \"blob\" : \"arraybuffer\";\n\n\tvar deferred = new defer();\n\n\tvar xhr = new XMLHttpRequest();\n\n\t//-- Check from PDF.js:\n\t//   https://github.com/mozilla/pdf.js/blob/master/web/compatibility.js\n\tvar xhrPrototype = XMLHttpRequest.prototype;\n\n\tvar header;\n\n\tif (!(\"overrideMimeType\" in xhrPrototype)) {\n\t\t// IE10 might have response, but not overrideMimeType\n\t\tObject.defineProperty(xhrPrototype, \"overrideMimeType\", {\n\t\t\tvalue: function xmlHttpRequestOverrideMimeType() {}\n\t\t});\n\t}\n\n\tif(withCredentials) {\n\t\txhr.withCredentials = true;\n\t}\n\n\txhr.onreadystatechange = handler;\n\txhr.onerror = err;\n\n\txhr.open(\"GET\", url, true);\n\n\tfor(header in headers) {\n\t\txhr.setRequestHeader(header, headers[header]);\n\t}\n\n\tif(type == \"json\") {\n\t\txhr.setRequestHeader(\"Accept\", \"application/json\");\n\t}\n\n\t// If type isn\"t set, determine it from the file extension\n\tif(!type) {\n\t\ttype = new Path(url).extension;\n\t}\n\n\tif(type == \"blob\"){\n\t\txhr.responseType = BLOB_RESPONSE;\n\t}\n\n\n\tif(isXml(type)) {\n\t\t// xhr.responseType = \"document\";\n\t\txhr.overrideMimeType(\"text/xml\"); // for OPF parsing\n\t}\n\n\tif(type == \"xhtml\") {\n\t\t// xhr.responseType = \"document\";\n\t}\n\n\tif(type == \"html\" || type == \"htm\") {\n\t\t// xhr.responseType = \"document\";\n\t}\n\n\tif(type == \"binary\") {\n\t\txhr.responseType = \"arraybuffer\";\n\t}\n\n\txhr.send();\n\n\tfunction err(e) {\n\t\tdeferred.reject(e);\n\t}\n\n\tfunction handler() {\n\t\tif (this.readyState === XMLHttpRequest.DONE) {\n\t\t\tvar responseXML = false;\n\n\t\t\tif(this.responseType === \"\" || this.responseType === \"document\") {\n\t\t\t\tresponseXML = this.responseXML;\n\t\t\t}\n\n\t\t\tif (this.status === 200 || this.status === 0 || responseXML) { //-- Firefox is reporting 0 for blob urls\n\t\t\t\tvar r;\n\n\t\t\t\tif (!this.response && !responseXML) {\n\t\t\t\t\tdeferred.reject({\n\t\t\t\t\t\tstatus: this.status,\n\t\t\t\t\t\tmessage : \"Empty Response\",\n\t\t\t\t\t\tstack : new Error().stack\n\t\t\t\t\t});\n\t\t\t\t\treturn deferred.promise;\n\t\t\t\t}\n\n\t\t\t\tif (this.status === 403) {\n\t\t\t\t\tdeferred.reject({\n\t\t\t\t\t\tstatus: this.status,\n\t\t\t\t\t\tresponse: this.response,\n\t\t\t\t\t\tmessage : \"Forbidden\",\n\t\t\t\t\t\tstack : new Error().stack\n\t\t\t\t\t});\n\t\t\t\t\treturn deferred.promise;\n\t\t\t\t}\n\t\t\t\tif(responseXML){\n\t\t\t\t\tr = this.responseXML;\n\t\t\t\t} else\n\t\t\t\tif(isXml(type)){\n\t\t\t\t\t// xhr.overrideMimeType(\"text/xml\"); // for OPF parsing\n\t\t\t\t\t// If this.responseXML wasn't set, try to parse using a DOMParser from text\n\t\t\t\t\tr = parse(this.response, \"text/xml\");\n\t\t\t\t}else\n\t\t\t\tif(type == \"xhtml\"){\n\t\t\t\t\tr = parse(this.response, \"application/xhtml+xml\");\n\t\t\t\t}else\n\t\t\t\tif(type == \"html\" || type == \"htm\"){\n\t\t\t\t\tr = parse(this.response, \"text/html\");\n\t\t\t\t}else\n\t\t\t\tif(type == \"json\"){\n\t\t\t\t\tr = JSON.parse(this.response);\n\t\t\t\t}else\n\t\t\t\tif(type == \"blob\"){\n\n\t\t\t\t\tif(supportsURL) {\n\t\t\t\t\t\tr = this.response;\n\t\t\t\t\t} else {\n\t\t\t\t\t\t//-- Safari doesn't support responseType blob, so create a blob from arraybuffer\n\t\t\t\t\t\tr = new Blob([this.response]);\n\t\t\t\t\t}\n\n\t\t\t\t}else{\n\t\t\t\t\tr = this.response;\n\t\t\t\t}\n\n\t\t\t\tdeferred.resolve(r);\n\t\t\t} else {\n\n\t\t\t\tdeferred.reject({\n\t\t\t\t\tstatus: this.status,\n\t\t\t\t\tmessage : this.response,\n\t\t\t\t\tstack : new Error().stack\n\t\t\t\t});\n\n\t\t\t}\n\t\t}\n\t}\n\n\treturn deferred.promise;\n}\n\nexport default request;\n","import { defer } from \"./utils/core\";\nimport EpubCFI from \"./epubcfi\";\nimport Hook from \"./utils/hook\";\nimport { sprint } from \"./utils/core\";\nimport { replaceBase } from \"./utils/replacements\";\nimport Request from \"./utils/request\";\nimport { DOMParser as XMLDOMSerializer } from \"@xmldom/xmldom\";\n\n/**\n * Represents a Section of the Book\n *\n * In most books this is equivalent to a Chapter\n * @param {object} item  The spine item representing the section\n * @param {object} hooks hooks for serialize and content\n */\nclass Section {\n\tconstructor(item, hooks){\n\t\tthis.idref = item.idref;\n\t\tthis.linear = item.linear === \"yes\";\n\t\tthis.properties = item.properties;\n\t\tthis.index = item.index;\n\t\tthis.href = item.href;\n\t\tthis.url = item.url;\n\t\tthis.canonical = item.canonical;\n\t\tthis.next = item.next;\n\t\tthis.prev = item.prev;\n\n\t\tthis.cfiBase = item.cfiBase;\n\n\t\tif (hooks) {\n\t\t\tthis.hooks = hooks;\n\t\t} else {\n\t\t\tthis.hooks = {};\n\t\t\tthis.hooks.serialize = new Hook(this);\n\t\t\tthis.hooks.content = new Hook(this);\n\t\t}\n\n\t\tthis.document = undefined;\n\t\tthis.contents = undefined;\n\t\tthis.output = undefined;\n\t}\n\n\t/**\n\t * Load the section from its url\n\t * @param  {method} [_request] a request method to use for loading\n\t * @return {document} a promise with the xml document\n\t */\n\tload(_request){\n\t\tvar request = _request || this.request || Request;\n\t\tvar loading = new defer();\n\t\tvar loaded = loading.promise;\n\n\t\tif(this.contents) {\n\t\t\tloading.resolve(this.contents);\n\t\t} else {\n\t\t\trequest(this.url)\n\t\t\t\t.then(function(xml){\n\t\t\t\t\t// var directory = new Url(this.url).directory;\n\n\t\t\t\t\tthis.document = xml;\n\t\t\t\t\tthis.contents = xml.documentElement;\n\n\t\t\t\t\treturn this.hooks.content.trigger(this.document, this);\n\t\t\t\t}.bind(this))\n\t\t\t\t.then(function(){\n\t\t\t\t\tloading.resolve(this.contents);\n\t\t\t\t}.bind(this))\n\t\t\t\t.catch(function(error){\n\t\t\t\t\tloading.reject(error);\n\t\t\t\t});\n\t\t}\n\n\t\treturn loaded;\n\t}\n\n\t/**\n\t * Adds a base tag for resolving urls in the section\n\t * @private\n\t */\n\tbase(){\n\t\treturn replaceBase(this.document, this);\n\t}\n\n\t/**\n\t * Render the contents of a section\n\t * @param  {method} [_request] a request method to use for loading\n\t * @return {string} output a serialized XML Document\n\t */\n\trender(_request){\n\t\tvar rendering = new defer();\n\t\tvar rendered = rendering.promise;\n\t\tthis.output; // TODO: better way to return this from hooks?\n\n\t\tthis.load(_request).\n\t\t\tthen(function(contents){\n\t\t\t\tvar userAgent = (typeof navigator !== 'undefined' && navigator.userAgent) || '';\n\t\t\t\tvar isIE = userAgent.indexOf('Trident') >= 0;\n\t\t\t\tvar Serializer;\n\t\t\t\tif (typeof XMLSerializer === \"undefined\" || isIE) {\n\t\t\t\t\tSerializer = XMLDOMSerializer;\n\t\t\t\t} else {\n\t\t\t\t\tSerializer = XMLSerializer;\n\t\t\t\t}\n\t\t\t\tvar serializer = new Serializer();\n\t\t\t\tthis.output = serializer.serializeToString(contents);\n\t\t\t\treturn this.output;\n\t\t\t}.bind(this)).\n\t\t\tthen(function(){\n\t\t\t\treturn this.hooks.serialize.trigger(this.output, this);\n\t\t\t}.bind(this)).\n\t\t\tthen(function(){\n\t\t\t\trendering.resolve(this.output);\n\t\t\t}.bind(this))\n\t\t\t.catch(function(error){\n\t\t\t\trendering.reject(error);\n\t\t\t});\n\n\t\treturn rendered;\n\t}\n\n\t/**\n\t * Find a string in a section\n\t * @param  {string} _query The query string to find\n\t * @return {object[]} A list of matches, with form {cfi, excerpt}\n\t */\n\tfind(_query){\n\t\tvar section = this;\n\t\tvar matches = [];\n\t\tvar query = _query.toLowerCase();\n\t\tvar find = function(node){\n\t\t\tvar text = node.textContent.toLowerCase();\n\t\t\tvar range = section.document.createRange();\n\t\t\tvar cfi;\n\t\t\tvar pos;\n\t\t\tvar last = -1;\n\t\t\tvar excerpt;\n\t\t\tvar limit = 150;\n\n\t\t\twhile (pos != -1) {\n\t\t\t\t// Search for the query\n\t\t\t\tpos = text.indexOf(query, last + 1);\n\n\t\t\t\tif (pos != -1) {\n\t\t\t\t\t// We found it! Generate a CFI\n\t\t\t\t\trange = section.document.createRange();\n\t\t\t\t\trange.setStart(node, pos);\n\t\t\t\t\trange.setEnd(node, pos + query.length);\n\n\t\t\t\t\tcfi = section.cfiFromRange(range);\n\n\t\t\t\t\t// Generate the excerpt\n\t\t\t\t\tif (node.textContent.length < limit) {\n\t\t\t\t\t\texcerpt = node.textContent;\n\t\t\t\t\t}\n\t\t\t\t\telse {\n\t\t\t\t\t\texcerpt = node.textContent.substring(pos - limit/2, pos + limit/2);\n\t\t\t\t\t\texcerpt = \"...\" + excerpt + \"...\";\n\t\t\t\t\t}\n\n\t\t\t\t\t// Add the CFI to the matches list\n\t\t\t\t\tmatches.push({\n\t\t\t\t\t\tcfi: cfi,\n\t\t\t\t\t\texcerpt: excerpt\n\t\t\t\t\t});\n\t\t\t\t}\n\n\t\t\t\tlast = pos;\n\t\t\t}\n\t\t};\n\n\t\tsprint(section.document, function(node) {\n\t\t\tfind(node);\n\t\t});\n\n\t\treturn matches;\n\t};\n\n\n\t/**\n\t * Search a string in multiple sequential Element of the section. If the document.createTreeWalker api is missed(eg: IE8), use `find` as a fallback.\n\t * @param  {string} _query The query string to search\n\t * @param  {int} maxSeqEle The maximum number of Element that are combined for search, default value is 5.\n\t * @return {object[]} A list of matches, with form {cfi, excerpt}\n\t */\n\tsearch(_query , maxSeqEle = 5){\n\t\tif (typeof(document.createTreeWalker) == \"undefined\") {\n\t\t\treturn this.find(_query);\n\t\t}\n\t\tlet matches = [];\n\t\tconst excerptLimit = 150;\n\t\tconst section = this;\n\t\tconst query = _query.toLowerCase();\n\t\tconst search = function(nodeList){\n\t\t\tconst textWithCase =  nodeList.reduce((acc ,current)=>{\n\t\t\t\treturn acc + current.textContent;\n\t\t\t},\"\");\n\t\t\tconst text = textWithCase.toLowerCase();\n\t\t\tconst pos = text.indexOf(query);\n\t\t\tif (pos != -1){\n\t\t\t\tconst startNodeIndex = 0 , endPos = pos + query.length;\n\t\t\t\tlet endNodeIndex = 0 , l = 0;\n\t\t\t\tif (pos < nodeList[startNodeIndex].length){\n\t\t\t\t\tlet cfi;\n\t\t\t\t\twhile( endNodeIndex < nodeList.length - 1 ){\n\t\t\t\t\t\tl += nodeList[endNodeIndex].length;\n\t\t\t\t\t\tif ( endPos <= l){\n\t\t\t\t\t\t\tbreak;\n\t\t\t\t\t\t}\n\t\t\t\t\t\tendNodeIndex += 1;\n\t\t\t\t\t}\n\n\t\t\t\t\tlet startNode = nodeList[startNodeIndex] , endNode = nodeList[endNodeIndex];\n\t\t\t\t\tlet range = section.document.createRange();\n\t\t\t\t\trange.setStart(startNode,pos);\n\t\t\t\t\tlet beforeEndLengthCount =  nodeList.slice(0, endNodeIndex).reduce((acc,current)=>{return acc+current.textContent.length;},0) ;\n\t\t\t\t\trange.setEnd(endNode, beforeEndLengthCount > endPos ? endPos : endPos - beforeEndLengthCount );\n\t\t\t\t\tcfi = section.cfiFromRange(range);\n\n\t\t\t\t\tlet excerpt = nodeList.slice(0, endNodeIndex+1).reduce((acc,current)=>{return acc+current.textContent ;},\"\");\n\t\t\t\t\tif (excerpt.length > excerptLimit){\n\t\t\t\t\t\texcerpt = excerpt.substring(pos - excerptLimit/2, pos + excerptLimit/2);\n\t\t\t\t\t\texcerpt = \"...\" + excerpt + \"...\";\n\t\t\t\t\t}\n\t\t\t\t\tmatches.push({\n\t\t\t\t\t\tcfi: cfi,\n\t\t\t\t\t\texcerpt: excerpt\n\t\t\t\t\t});\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\n\t\tconst treeWalker = document.createTreeWalker(section.document, NodeFilter.SHOW_TEXT, null, false);\n\t\tlet node , nodeList = [];\n\t\twhile (node = treeWalker.nextNode()) {\n\t\t\tnodeList.push(node);\n\t\t\tif (nodeList.length == maxSeqEle){\n\t\t\t\tsearch(nodeList.slice(0 , maxSeqEle));\n\t\t\t\tnodeList = nodeList.slice(1, maxSeqEle);\n\t\t\t}\n\t\t}\n\t\tif (nodeList.length > 0){\n\t\t\tsearch(nodeList);\n\t\t}\n\t\treturn matches;\n\t}\n\n\t/**\n\t* Reconciles the current chapters layout properties with\n\t* the global layout properties.\n\t* @param {object} globalLayout  The global layout settings object, chapter properties string\n\t* @return {object} layoutProperties Object with layout properties\n\t*/\n\treconcileLayoutSettings(globalLayout){\n\t\t//-- Get the global defaults\n\t\tvar settings = {\n\t\t\tlayout : globalLayout.layout,\n\t\t\tspread : globalLayout.spread,\n\t\t\torientation : globalLayout.orientation\n\t\t};\n\n\t\t//-- Get the chapter's display type\n\t\tthis.properties.forEach(function(prop){\n\t\t\tvar rendition = prop.replace(\"rendition:\", \"\");\n\t\t\tvar split = rendition.indexOf(\"-\");\n\t\t\tvar property, value;\n\n\t\t\tif(split != -1){\n\t\t\t\tproperty = rendition.slice(0, split);\n\t\t\t\tvalue = rendition.slice(split+1);\n\n\t\t\t\tsettings[property] = value;\n\t\t\t}\n\t\t});\n\t\treturn settings;\n\t}\n\n\t/**\n\t * Get a CFI from a Range in the Section\n\t * @param  {range} _range\n\t * @return {string} cfi an EpubCFI string\n\t */\n\tcfiFromRange(_range) {\n\t\treturn new EpubCFI(_range, this.cfiBase).toString();\n\t}\n\n\t/**\n\t * Get a CFI from an Element in the Section\n\t * @param  {element} el\n\t * @return {string} cfi an EpubCFI string\n\t */\n\tcfiFromElement(el) {\n\t\treturn new EpubCFI(el, this.cfiBase).toString();\n\t}\n\n\t/**\n\t * Unload the section document\n\t */\n\tunload() {\n\t\tthis.document = undefined;\n\t\tthis.contents = undefined;\n\t\tthis.output = undefined;\n\t}\n\n\tdestroy() {\n\t\tthis.unload();\n\t\tthis.hooks.serialize.clear();\n\t\tthis.hooks.content.clear();\n\n\t\tthis.hooks = undefined;\n\t\tthis.idref = undefined;\n\t\tthis.linear = undefined;\n\t\tthis.properties = undefined;\n\t\tthis.index = undefined;\n\t\tthis.href = undefined;\n\t\tthis.url = undefined;\n\t\tthis.next = undefined;\n\t\tthis.prev = undefined;\n\n\t\tthis.cfiBase = undefined;\n\t}\n}\n\nexport default Section;\n","import EpubCFI from \"./epubcfi\";\nimport Hook from \"./utils/hook\";\nimport Section from \"./section\";\nimport {replaceBase, replaceCanonical, replaceMeta} from \"./utils/replacements\";\n\n/**\n * A collection of Spine Items\n */\nclass Spine {\n\tconstructor() {\n\t\tthis.spineItems = [];\n\t\tthis.spineByHref = {};\n\t\tthis.spineById = {};\n\n\t\tthis.hooks = {};\n\t\tthis.hooks.serialize = new Hook();\n\t\tthis.hooks.content = new Hook();\n\n\t\t// Register replacements\n\t\tthis.hooks.content.register(replaceBase);\n\t\tthis.hooks.content.register(replaceCanonical);\n\t\tthis.hooks.content.register(replaceMeta);\n\n\t\tthis.epubcfi = new EpubCFI();\n\n\t\tthis.loaded = false;\n\n\t\tthis.items = undefined;\n\t\tthis.manifest = undefined;\n\t\tthis.spineNodeIndex = undefined;\n\t\tthis.baseUrl = undefined;\n\t\tthis.length = undefined;\n\t}\n\n\t/**\n\t * Unpack items from a opf into spine items\n\t * @param  {Packaging} _package\n\t * @param  {method} resolver URL resolver\n\t * @param  {method} canonical Resolve canonical url\n\t */\n\tunpack(_package, resolver, canonical) {\n\n\t\tthis.items = _package.spine;\n\t\tthis.manifest = _package.manifest;\n\t\tthis.spineNodeIndex = _package.spineNodeIndex;\n\t\tthis.baseUrl = _package.baseUrl || _package.basePath || \"\";\n\t\tthis.length = this.items.length;\n\n\t\tthis.items.forEach( (item, index) => {\n\t\t\tvar manifestItem = this.manifest[item.idref];\n\t\t\tvar spineItem;\n\n\t\t\titem.index = index;\n\t\t\titem.cfiBase = this.epubcfi.generateChapterComponent(this.spineNodeIndex, item.index, item.id);\n\n\t\t\tif (item.href) {\n\t\t\t\titem.url = resolver(item.href, true);\n\t\t\t\titem.canonical = canonical(item.href);\n\t\t\t}\n\n\t\t\tif(manifestItem) {\n\t\t\t\titem.href = manifestItem.href;\n\t\t\t\titem.url = resolver(item.href, true);\n\t\t\t\titem.canonical = canonical(item.href);\n\n\t\t\t\tif(manifestItem.properties.length){\n\t\t\t\t\titem.properties.push.apply(item.properties, manifestItem.properties);\n\t\t\t\t}\n\t\t\t}\n\n\t\t\tif (item.linear === \"yes\") {\n\t\t\t\titem.prev = function() {\n\t\t\t\t\tlet prevIndex = item.index;\n\t\t\t\t\twhile (prevIndex > 0) {\n\t\t\t\t\t\tlet prev = this.get(prevIndex-1);\n\t\t\t\t\t\tif (prev && prev.linear) {\n\t\t\t\t\t\t\treturn prev;\n\t\t\t\t\t\t}\n\t\t\t\t\t\tprevIndex -= 1;\n\t\t\t\t\t}\n\t\t\t\t\treturn;\n\t\t\t\t}.bind(this);\n\t\t\t\titem.next = function() {\n\t\t\t\t\tlet nextIndex = item.index;\n\t\t\t\t\twhile (nextIndex < this.spineItems.length-1) {\n\t\t\t\t\t\tlet next = this.get(nextIndex+1);\n\t\t\t\t\t\tif (next && next.linear) {\n\t\t\t\t\t\t\treturn next;\n\t\t\t\t\t\t}\n\t\t\t\t\t\tnextIndex += 1;\n\t\t\t\t\t}\n\t\t\t\t\treturn;\n\t\t\t\t}.bind(this);\n\t\t\t} else {\n\t\t\t\titem.prev = function() {\n\t\t\t\t\treturn;\n\t\t\t\t}\n\t\t\t\titem.next = function() {\n\t\t\t\t\treturn;\n\t\t\t\t}\n\t\t\t}\n\n\n\t\t\tspineItem = new Section(item, this.hooks);\n\n\t\t\tthis.append(spineItem);\n\n\n\t\t});\n\n\t\tthis.loaded = true;\n\t}\n\n\t/**\n\t * Get an item from the spine\n\t * @param  {string|number} [target]\n\t * @return {Section} section\n\t * @example spine.get();\n\t * @example spine.get(1);\n\t * @example spine.get(\"chap1.html\");\n\t * @example spine.get(\"#id1234\");\n\t */\n\tget(target) {\n\t\tvar index = 0;\n\n\t\tif (typeof target === \"undefined\") {\n\t\t\twhile (index < this.spineItems.length) {\n\t\t\t\tlet next = this.spineItems[index];\n\t\t\t\tif (next && next.linear) {\n\t\t\t\t\tbreak;\n\t\t\t\t}\n\t\t\t\tindex += 1;\n\t\t\t}\n\t\t} else if(this.epubcfi.isCfiString(target)) {\n\t\t\tlet cfi = new EpubCFI(target);\n\t\t\tindex = cfi.spinePos;\n\t\t} else if(typeof target === \"number\" || isNaN(target) === false){\n\t\t\tindex = target;\n\t\t} else if(typeof target === \"string\" && target.indexOf(\"#\") === 0) {\n\t\t\tindex = this.spineById[target.substring(1)];\n\t\t} else if(typeof target === \"string\") {\n\t\t\t// Remove fragments\n\t\t\ttarget = target.split(\"#\")[0];\n\t\t\tindex = this.spineByHref[target] || this.spineByHref[encodeURI(target)];\n\t\t}\n\n\t\treturn this.spineItems[index] || null;\n\t}\n\n\t/**\n\t * Append a Section to the Spine\n\t * @private\n\t * @param  {Section} section\n\t */\n\tappend(section) {\n\t\tvar index = this.spineItems.length;\n\t\tsection.index = index;\n\n\t\tthis.spineItems.push(section);\n\n\t\t// Encode and Decode href lookups\n\t\t// see pr for details: https://github.com/futurepress/epub.js/pull/358\n\t\tthis.spineByHref[decodeURI(section.href)] = index;\n\t\tthis.spineByHref[encodeURI(section.href)] = index;\n\t\tthis.spineByHref[section.href] = index;\n\n\t\tthis.spineById[section.idref] = index;\n\n\t\treturn index;\n\t}\n\n\t/**\n\t * Prepend a Section to the Spine\n\t * @private\n\t * @param  {Section} section\n\t */\n\tprepend(section) {\n\t\t// var index = this.spineItems.unshift(section);\n\t\tthis.spineByHref[section.href] = 0;\n\t\tthis.spineById[section.idref] = 0;\n\n\t\t// Re-index\n\t\tthis.spineItems.forEach(function(item, index){\n\t\t\titem.index = index;\n\t\t});\n\n\t\treturn 0;\n\t}\n\n\t// insert(section, index) {\n\t//\n\t// };\n\n\t/**\n\t * Remove a Section from the Spine\n\t * @private\n\t * @param  {Section} section\n\t */\n\tremove(section) {\n\t\tvar index = this.spineItems.indexOf(section);\n\n\t\tif(index > -1) {\n\t\t\tdelete this.spineByHref[section.href];\n\t\t\tdelete this.spineById[section.idref];\n\n\t\t\treturn this.spineItems.splice(index, 1);\n\t\t}\n\t}\n\n\t/**\n\t * Loop over the Sections in the Spine\n\t * @return {method} forEach\n\t */\n\teach() {\n\t\treturn this.spineItems.forEach.apply(this.spineItems, arguments);\n\t}\n\n\t/**\n\t * Find the first Section in the Spine\n\t * @return {Section} first section\n\t */\n\tfirst() {\n\t\tlet index = 0;\n\n\t\tdo {\n\t\t\tlet next = this.get(index);\n\n\t\t\tif (next && next.linear) {\n\t\t\t\treturn next;\n\t\t\t}\n\t\t\tindex += 1;\n\t\t} while (index < this.spineItems.length) ;\n\t}\n\n\t/**\n\t * Find the last Section in the Spine\n\t * @return {Section} last section\n\t */\n\tlast() {\n\t\tlet index = this.spineItems.length-1;\n\n\t\tdo {\n\t\t\tlet prev = this.get(index);\n\t\t\tif (prev && prev.linear) {\n\t\t\t\treturn prev;\n\t\t\t}\n\t\t\tindex -= 1;\n\t\t} while (index >= 0);\n\t}\n\n\tdestroy() {\n\t\tthis.each((section) => section.destroy());\n\n\t\tthis.spineItems = undefined\n\t\tthis.spineByHref = undefined\n\t\tthis.spineById = undefined\n\n\t\tthis.hooks.serialize.clear();\n\t\tthis.hooks.content.clear();\n\t\tthis.hooks = undefined;\n\n\t\tthis.epubcfi = undefined;\n\n\t\tthis.loaded = false;\n\n\t\tthis.items = undefined;\n\t\tthis.manifest = undefined;\n\t\tthis.spineNodeIndex = undefined;\n\t\tthis.baseUrl = undefined;\n\t\tthis.length = undefined;\n\t}\n}\n\nexport default Spine;\n","import {qs, sprint, locationOf, defer} from \"./utils/core\";\nimport Queue from \"./utils/queue\";\nimport EpubCFI from \"./epubcfi\";\nimport { EVENTS } from \"./utils/constants\";\nimport EventEmitter from \"event-emitter\";\n\n/**\n * Find Locations for a Book\n * @param {Spine} spine\n * @param {request} request\n * @param {number} [pause=100]\n */\nclass Locations {\n\tconstructor(spine, request, pause) {\n\t\tthis.spine = spine;\n\t\tthis.request = request;\n\t\tthis.pause = pause || 100;\n\n\t\tthis.q = new Queue(this);\n\t\tthis.epubcfi = new EpubCFI();\n\n\t\tthis._locations = [];\n\t\tthis._locationsWords = [];\n\t\tthis.total = 0;\n\n\t\tthis.break = 150;\n\n\t\tthis._current = 0;\n\n\t\tthis._wordCounter = 0;\n\n\t\tthis.currentLocation = '';\n\t\tthis._currentCfi ='';\n\t\tthis.processingTimeout = undefined;\n\t}\n\n\t/**\n\t * Load all of sections in the book to generate locations\n\t * @param  {int} chars how many chars to split on\n\t * @return {Promise<Array<string>>} locations\n\t */\n\tgenerate(chars) {\n\n\t\tif (chars) {\n\t\t\tthis.break = chars;\n\t\t}\n\n\t\tthis.q.pause();\n\n\t\tthis.spine.each(function(section) {\n\t\t\tif (section.linear) {\n\t\t\t\tthis.q.enqueue(this.process.bind(this), section);\n\t\t\t}\n\t\t}.bind(this));\n\n\t\treturn this.q.run().then(function() {\n\t\t\tthis.total = this._locations.length - 1;\n\n\t\t\tif (this._currentCfi) {\n\t\t\t\tthis.currentLocation = this._currentCfi;\n\t\t\t}\n\n\t\t\treturn this._locations;\n\t\t\t// console.log(this.percentage(this.book.rendition.location.start), this.percentage(this.book.rendition.location.end));\n\t\t}.bind(this));\n\n\t}\n\n\tcreateRange () {\n\t\treturn {\n\t\t\tstartContainer: undefined,\n\t\t\tstartOffset: undefined,\n\t\t\tendContainer: undefined,\n\t\t\tendOffset: undefined\n\t\t};\n\t}\n\n\tprocess(section) {\n\n\t\treturn section.load(this.request)\n\t\t\t.then(function(contents) {\n\t\t\t\tvar completed = new defer();\n\t\t\t\tvar locations = this.parse(contents, section.cfiBase);\n\t\t\t\tthis._locations = this._locations.concat(locations);\n\n\t\t\t\tsection.unload();\n\n\t\t\t\tthis.processingTimeout = setTimeout(() => completed.resolve(locations), this.pause);\n\t\t\t\treturn completed.promise;\n\t\t\t}.bind(this));\n\n\t}\n\n\tparse(contents, cfiBase, chars) {\n\t\tvar locations = [];\n\t\tvar range;\n\t\tvar doc = contents.ownerDocument;\n\t\tvar body = qs(doc, \"body\");\n\t\tvar counter = 0;\n\t\tvar prev;\n\t\tvar _break = chars || this.break;\n\t\tvar parser = function(node) {\n\t\t\tvar len = node.length;\n\t\t\tvar dist;\n\t\t\tvar pos = 0;\n\n\t\t\tif (node.textContent.trim().length === 0) {\n\t\t\t\treturn false; // continue\n\t\t\t}\n\n\t\t\t// Start range\n\t\t\tif (counter == 0) {\n\t\t\t\trange = this.createRange();\n\t\t\t\trange.startContainer = node;\n\t\t\t\trange.startOffset = 0;\n\t\t\t}\n\n\t\t\tdist = _break - counter;\n\n\t\t\t// Node is smaller than a break,\n\t\t\t// skip over it\n\t\t\tif(dist > len){\n\t\t\t\tcounter += len;\n\t\t\t\tpos = len;\n\t\t\t}\n\n\n\t\t\twhile (pos < len) {\n\t\t\t\tdist = _break - counter;\n\n\t\t\t\tif (counter === 0) {\n\t\t\t\t\t// Start new range\n\t\t\t\t\tpos += 1;\n\t\t\t\t\trange = this.createRange();\n\t\t\t\t\trange.startContainer = node;\n\t\t\t\t\trange.startOffset = pos;\n\t\t\t\t}\n\n\t\t\t\t// pos += dist;\n\n\t\t\t\t// Gone over\n\t\t\t\tif(pos + dist >= len){\n\t\t\t\t\t// Continue counter for next node\n\t\t\t\t\tcounter += len - pos;\n\t\t\t\t\t// break\n\t\t\t\t\tpos = len;\n\t\t\t\t// At End\n\t\t\t\t} else {\n\t\t\t\t\t// Advance pos\n\t\t\t\t\tpos += dist;\n\n\t\t\t\t\t// End the previous range\n\t\t\t\t\trange.endContainer = node;\n\t\t\t\t\trange.endOffset = pos;\n\t\t\t\t\t// cfi = section.cfiFromRange(range);\n\t\t\t\t\tlet cfi = new EpubCFI(range, cfiBase).toString();\n\t\t\t\t\tlocations.push(cfi);\n\t\t\t\t\tcounter = 0;\n\t\t\t\t}\n\t\t\t}\n\t\t\tprev = node;\n\t\t};\n\n\t\tsprint(body, parser.bind(this));\n\n\t\t// Close remaining\n\t\tif (range && range.startContainer && prev) {\n\t\t\trange.endContainer = prev;\n\t\t\trange.endOffset = prev.length;\n\t\t\tlet cfi = new EpubCFI(range, cfiBase).toString();\n\t\t\tlocations.push(cfi);\n\t\t\tcounter = 0;\n\t\t}\n\n\t\treturn locations;\n\t}\n\n\n\t/**\n\t * Load all of sections in the book to generate locations\n\t * @param  {string} startCfi start position\n\t * @param  {int} wordCount how many words to split on\n\t * @param  {int} count result count\n\t * @return {object} locations\n\t */\n\tgenerateFromWords(startCfi, wordCount, count) {\n\t\tvar start = startCfi ? new EpubCFI(startCfi) : undefined;\n\t\tthis.q.pause();\n\t\tthis._locationsWords = [];\n\t\tthis._wordCounter = 0;\n\n\t\tthis.spine.each(function(section) {\n\t\t\tif (section.linear) {\n\t\t\t\tif (start) {\n\t\t\t\t\tif (section.index >= start.spinePos) {\n\t\t\t\t\t\tthis.q.enqueue(this.processWords.bind(this), section, wordCount, start, count);\n\t\t\t\t\t}\n\t\t\t\t} else {\n\t\t\t\t\tthis.q.enqueue(this.processWords.bind(this), section, wordCount, start, count);\n\t\t\t\t}\n\t\t\t}\n\t\t}.bind(this));\n\n\t\treturn this.q.run().then(function() {\n\t\t\tif (this._currentCfi) {\n\t\t\t\tthis.currentLocation = this._currentCfi;\n\t\t\t}\n\n\t\t\treturn this._locationsWords;\n\t\t}.bind(this));\n\n\t}\n\n\tprocessWords(section, wordCount, startCfi, count) {\n\t\tif (count && this._locationsWords.length >= count) {\n\t\t\treturn Promise.resolve();\n\t\t}\n\n\t\treturn section.load(this.request)\n\t\t\t.then(function(contents) {\n\t\t\t\tvar completed = new defer();\n\t\t\t\tvar locations = this.parseWords(contents, section, wordCount, startCfi);\n\t\t\t\tvar remainingCount = count - this._locationsWords.length;\n\t\t\t\tthis._locationsWords = this._locationsWords.concat(locations.length >= count ? locations.slice(0, remainingCount) : locations);\n\n\t\t\t\tsection.unload();\n\n\t\t\t\tthis.processingTimeout = setTimeout(() => completed.resolve(locations), this.pause);\n\t\t\t\treturn completed.promise;\n\t\t\t}.bind(this));\n\t}\n\n\t//http://stackoverflow.com/questions/18679576/counting-words-in-string\n\tcountWords(s) {\n\t\ts = s.replace(/(^\\s*)|(\\s*$)/gi, \"\");//exclude  start and end white-space\n\t\ts = s.replace(/[ ]{2,}/gi, \" \");//2 or more space to 1\n\t\ts = s.replace(/\\n /, \"\\n\"); // exclude newline with a start spacing\n\t\treturn s.split(\" \").length;\n\t}\n\n\tparseWords(contents, section, wordCount, startCfi) {\n\t\tvar cfiBase = section.cfiBase;\n\t\tvar locations = [];\n\t\tvar doc = contents.ownerDocument;\n\t\tvar body = qs(doc, \"body\");\n\t\tvar prev;\n\t\tvar _break = wordCount;\n\t\tvar foundStartNode = startCfi ? startCfi.spinePos !== section.index : true;\n\t\tvar startNode;\n\t\tif (startCfi && section.index === startCfi.spinePos) {\n\t\t\tstartNode = startCfi.findNode(startCfi.range ? startCfi.path.steps.concat(startCfi.start.steps) : startCfi.path.steps, contents.ownerDocument);\n\t\t}\n\t\tvar parser = function(node) {\n\t\t\tif (!foundStartNode) {\n\t\t\t\tif (node === startNode) {\n\t\t\t\t\tfoundStartNode = true;\n\t\t\t\t} else {\n\t\t\t\t\treturn false;\n\t\t\t\t}\n\t\t\t}\n\t\t\tif (node.textContent.length < 10) {\n\t\t\t\tif (node.textContent.trim().length === 0) {\n\t\t\t\t\treturn false;\n\t\t\t\t}\n\t\t\t}\n\t\t\tvar len  = this.countWords(node.textContent);\n\t\t\tvar dist;\n\t\t\tvar pos = 0;\n\n\t\t\tif (len === 0) {\n\t\t\t\treturn false; // continue\n\t\t\t}\n\n\t\t\tdist = _break - this._wordCounter;\n\n\t\t\t// Node is smaller than a break,\n\t\t\t// skip over it\n\t\t\tif (dist > len) {\n\t\t\t\tthis._wordCounter += len;\n\t\t\t\tpos = len;\n\t\t\t}\n\n\n\t\t\twhile (pos < len) {\n\t\t\t\tdist = _break - this._wordCounter;\n\n\t\t\t\t// Gone over\n\t\t\t\tif (pos + dist >= len) {\n\t\t\t\t\t// Continue counter for next node\n\t\t\t\t\tthis._wordCounter += len - pos;\n\t\t\t\t\t// break\n\t\t\t\t\tpos = len;\n\t\t\t\t\t// At End\n\t\t\t\t} else {\n\t\t\t\t\t// Advance pos\n\t\t\t\t\tpos += dist;\n\n\t\t\t\t\tlet cfi = new EpubCFI(node, cfiBase);\n\t\t\t\t\tlocations.push({ cfi: cfi.toString(), wordCount: this._wordCounter });\n\t\t\t\t\tthis._wordCounter = 0;\n\t\t\t\t}\n\t\t\t}\n\t\t\tprev = node;\n\t\t};\n\n\t\tsprint(body, parser.bind(this));\n\n\t\treturn locations;\n\t}\n\n\t/**\n\t * Get a location from an EpubCFI\n\t * @param {EpubCFI} cfi\n\t * @return {number}\n\t */\n\tlocationFromCfi(cfi){\n\t\tlet loc;\n\t\tif (EpubCFI.prototype.isCfiString(cfi)) {\n\t\t\tcfi = new EpubCFI(cfi);\n\t\t}\n\t\t// Check if the location has not been set yet\n\t\tif(this._locations.length === 0) {\n\t\t\treturn -1;\n\t\t}\n\n\t\tloc = locationOf(cfi, this._locations, this.epubcfi.compare);\n\n\t\tif (loc > this.total) {\n\t\t\treturn this.total;\n\t\t}\n\n\t\treturn loc;\n\t}\n\n\t/**\n\t * Get a percentage position in locations from an EpubCFI\n\t * @param {EpubCFI} cfi\n\t * @return {number}\n\t */\n\tpercentageFromCfi(cfi) {\n\t\tif(this._locations.length === 0) {\n\t\t\treturn null;\n\t\t}\n\t\t// Find closest cfi\n\t\tvar loc = this.locationFromCfi(cfi);\n\t\t// Get percentage in total\n\t\treturn this.percentageFromLocation(loc);\n\t}\n\n\t/**\n\t * Get a percentage position from a location index\n\t * @param {number} location\n\t * @return {number}\n\t */\n\tpercentageFromLocation(loc) {\n\t\tif (!loc || !this.total) {\n\t\t\treturn 0;\n\t\t}\n\n\t\treturn (loc / this.total);\n\t}\n\n\t/**\n\t * Get an EpubCFI from location index\n\t * @param {number} loc\n\t * @return {EpubCFI} cfi\n\t */\n\tcfiFromLocation(loc){\n\t\tvar cfi = -1;\n\t\t// check that pg is an int\n\t\tif(typeof loc != \"number\"){\n\t\t\tloc = parseInt(loc);\n\t\t}\n\n\t\tif(loc >= 0 && loc < this._locations.length) {\n\t\t\tcfi = this._locations[loc];\n\t\t}\n\n\t\treturn cfi;\n\t}\n\n\t/**\n\t * Get an EpubCFI from location percentage\n\t * @param {number} percentage\n\t * @return {EpubCFI} cfi\n\t */\n\tcfiFromPercentage(percentage){\n\t\tlet loc;\n\t\tif (percentage > 1) {\n\t\t\tconsole.warn(\"Normalize cfiFromPercentage value to between 0 - 1\");\n\t\t}\n\n\t\t// Make sure 1 goes to very end\n\t\tif (percentage >= 1) {\n\t\t\tlet cfi = new EpubCFI(this._locations[this.total]);\n\t\t\tcfi.collapse();\n\t\t\treturn cfi.toString();\n\t\t}\n\n\t\tloc = Math.ceil(this.total * percentage);\n\t\treturn this.cfiFromLocation(loc);\n\t}\n\n\t/**\n\t * Load locations from JSON\n\t * @param {json} locations\n\t */\n\tload(locations){\n\t\tif (typeof locations === \"string\") {\n\t\t\tthis._locations = JSON.parse(locations);\n\t\t} else {\n\t\t\tthis._locations = locations;\n\t\t}\n\t\tthis.total = this._locations.length - 1;\n\t\treturn this._locations;\n\t}\n\n\t/**\n\t * Save locations to JSON\n\t * @return {json}\n\t */\n\tsave(){\n\t\treturn JSON.stringify(this._locations);\n\t}\n\n\tgetCurrent(){\n\t\treturn this._current;\n\t}\n\n\tsetCurrent(curr){\n\t\tvar loc;\n\n\t\tif(typeof curr == \"string\"){\n\t\t\tthis._currentCfi = curr;\n\t\t} else if (typeof curr == \"number\") {\n\t\t\tthis._current = curr;\n\t\t} else {\n\t\t\treturn;\n\t\t}\n\n\t\tif(this._locations.length === 0) {\n\t\t\treturn;\n\t\t}\n\n\t\tif(typeof curr == \"string\"){\n\t\t\tloc = this.locationFromCfi(curr);\n\t\t\tthis._current = loc;\n\t\t} else {\n\t\t\tloc = curr;\n\t\t}\n\n\t\tthis.emit(EVENTS.LOCATIONS.CHANGED, {\n\t\t\tpercentage: this.percentageFromLocation(loc)\n\t\t});\n\t}\n\n\t/**\n\t * Get the current location\n\t */\n\tget currentLocation() {\n\t\treturn this._current;\n\t}\n\n\t/**\n\t * Set the current location\n\t */\n\tset currentLocation(curr) {\n\t\tthis.setCurrent(curr);\n\t}\n\n\t/**\n\t * Locations length\n\t */\n\tlength () {\n\t\treturn this._locations.length;\n\t}\n\n\tdestroy () {\n\t\tthis.spine = undefined;\n\t\tthis.request = undefined;\n\t\tthis.pause = undefined;\n\n\t\tthis.q.stop();\n\t\tthis.q = undefined;\n\t\tthis.epubcfi = undefined;\n\n\t\tthis._locations = undefined\n\t\tthis.total = undefined;\n\n\t\tthis.break = undefined;\n\t\tthis._current = undefined;\n\n\t\tthis.currentLocation = undefined;\n\t\tthis._currentCfi = undefined;\n\t\tclearTimeout(this.processingTimeout);\n\t}\n}\n\nEventEmitter(Locations.prototype);\n\nexport default Locations;\n","import path from \"path-webpack\";\nimport {qs} from \"./utils/core\";\n\n/**\n * Handles Parsing and Accessing an Epub Container\n * @class\n * @param {document} [containerDocument] xml document\n */\nclass Container {\n\tconstructor(containerDocument) {\n\t\tthis.packagePath = '';\n\t\tthis.directory = '';\n\t\tthis.encoding = '';\n\n\t\tif (containerDocument) {\n\t\t\tthis.parse(containerDocument);\n\t\t}\n\t}\n\n\t/**\n\t * Parse the Container XML\n\t * @param  {document} containerDocument\n\t */\n\tparse(containerDocument){\n\t\t//-- <rootfile full-path=\"OPS/package.opf\" media-type=\"application/oebps-package+xml\"/>\n\t\tvar rootfile;\n\n\t\tif(!containerDocument) {\n\t\t\tthrow new Error(\"Container File Not Found\");\n\t\t}\n\n\t\trootfile = qs(containerDocument, \"rootfile\");\n\n\t\tif(!rootfile) {\n\t\t\tthrow new Error(\"No RootFile Found\");\n\t\t}\n\n\t\tthis.packagePath = rootfile.getAttribute(\"full-path\");\n\t\tthis.directory = path.dirname(this.packagePath);\n\t\tthis.encoding = containerDocument.xmlEncoding;\n\t}\n\n\tdestroy() {\n\t\tthis.packagePath = undefined;\n\t\tthis.directory = undefined;\n\t\tthis.encoding = undefined;\n\t}\n}\n\nexport default Container;\n","import {qs, qsa, qsp, indexOfElementNode} from \"./utils/core\";\n\n/**\n * Open Packaging Format Parser\n * @class\n * @param {document} packageDocument OPF XML\n */\nclass Packaging {\n\tconstructor(packageDocument) {\n\t\tthis.manifest = {};\n\t\tthis.navPath = '';\n\t\tthis.ncxPath = '';\n\t\tthis.coverPath = '';\n\t\tthis.spineNodeIndex = 0;\n\t\tthis.spine = [];\n\t\tthis.metadata = {};\n\n\t\tif (packageDocument) {\n\t\t\tthis.parse(packageDocument);\n\t\t}\n\t}\n\n\t/**\n\t * Parse OPF XML\n\t * @param  {document} packageDocument OPF XML\n\t * @return {object} parsed package parts\n\t */\n\tparse(packageDocument){\n\t\tvar metadataNode, manifestNode, spineNode;\n\n\t\tif(!packageDocument) {\n\t\t\tthrow new Error(\"Package File Not Found\");\n\t\t}\n\n\t\tmetadataNode = qs(packageDocument, \"metadata\");\n\t\tif(!metadataNode) {\n\t\t\tthrow new Error(\"No Metadata Found\");\n\t\t}\n\n\t\tmanifestNode = qs(packageDocument, \"manifest\");\n\t\tif(!manifestNode) {\n\t\t\tthrow new Error(\"No Manifest Found\");\n\t\t}\n\n\t\tspineNode = qs(packageDocument, \"spine\");\n\t\tif(!spineNode) {\n\t\t\tthrow new Error(\"No Spine Found\");\n\t\t}\n\n\t\tthis.manifest = this.parseManifest(manifestNode);\n\t\tthis.navPath = this.findNavPath(manifestNode);\n\t\tthis.ncxPath = this.findNcxPath(manifestNode, spineNode);\n\t\tthis.coverPath = this.findCoverPath(packageDocument);\n\n\t\tthis.spineNodeIndex = indexOfElementNode(spineNode);\n\n\t\tthis.spine = this.parseSpine(spineNode, this.manifest);\n\n\t\tthis.uniqueIdentifier = this.findUniqueIdentifier(packageDocument);\n\t\tthis.metadata = this.parseMetadata(metadataNode);\n\n\t\tthis.metadata.direction = spineNode.getAttribute(\"page-progression-direction\");\n\n\t\treturn {\n\t\t\t\"metadata\" : this.metadata,\n\t\t\t\"spine\"    : this.spine,\n\t\t\t\"manifest\" : this.manifest,\n\t\t\t\"navPath\"  : this.navPath,\n\t\t\t\"ncxPath\"  : this.ncxPath,\n\t\t\t\"coverPath\": this.coverPath,\n\t\t\t\"spineNodeIndex\" : this.spineNodeIndex\n\t\t};\n\t}\n\n\t/**\n\t * Parse Metadata\n\t * @private\n\t * @param  {node} xml\n\t * @return {object} metadata\n\t */\n\tparseMetadata(xml){\n\t\tvar metadata = {};\n\n\t\tmetadata.title = this.getElementText(xml, \"title\");\n\t\tmetadata.creator = this.getElementText(xml, \"creator\");\n\t\tmetadata.description = this.getElementText(xml, \"description\");\n\n\t\tmetadata.pubdate = this.getElementText(xml, \"date\");\n\n\t\tmetadata.publisher = this.getElementText(xml, \"publisher\");\n\n\t\tmetadata.identifier = this.getElementText(xml, \"identifier\");\n\t\tmetadata.language = this.getElementText(xml, \"language\");\n\t\tmetadata.rights = this.getElementText(xml, \"rights\");\n\n\t\tmetadata.modified_date = this.getPropertyText(xml, \"dcterms:modified\");\n\n\t\tmetadata.layout = this.getPropertyText(xml, \"rendition:layout\");\n\t\tmetadata.orientation = this.getPropertyText(xml, \"rendition:orientation\");\n\t\tmetadata.flow = this.getPropertyText(xml, \"rendition:flow\");\n\t\tmetadata.viewport = this.getPropertyText(xml, \"rendition:viewport\");\n\t\tmetadata.media_active_class = this.getPropertyText(xml, \"media:active-class\");\n\t\tmetadata.spread = this.getPropertyText(xml, \"rendition:spread\");\n\t\t// metadata.page_prog_dir = packageXml.querySelector(\"spine\").getAttribute(\"page-progression-direction\");\n\n\t\treturn metadata;\n\t}\n\n\t/**\n\t * Parse Manifest\n\t * @private\n\t * @param  {node} manifestXml\n\t * @return {object} manifest\n\t */\n\tparseManifest(manifestXml){\n\t\tvar manifest = {};\n\n\t\t//-- Turn items into an array\n\t\t// var selected = manifestXml.querySelectorAll(\"item\");\n\t\tvar selected = qsa(manifestXml, \"item\");\n\t\tvar items = Array.prototype.slice.call(selected);\n\n\t\t//-- Create an object with the id as key\n\t\titems.forEach(function(item){\n\t\t\tvar id = item.getAttribute(\"id\"),\n\t\t\t\t\thref = item.getAttribute(\"href\") || \"\",\n\t\t\t\t\ttype = item.getAttribute(\"media-type\") || \"\",\n\t\t\t\t\toverlay = item.getAttribute(\"media-overlay\") || \"\",\n\t\t\t\t\tproperties = item.getAttribute(\"properties\") || \"\";\n\n\t\t\tmanifest[id] = {\n\t\t\t\t\"href\" : href,\n\t\t\t\t// \"url\" : href,\n\t\t\t\t\"type\" : type,\n\t\t\t\t\"overlay\" : overlay,\n\t\t\t\t\"properties\" : properties.length ? properties.split(\" \") : []\n\t\t\t};\n\n\t\t});\n\n\t\treturn manifest;\n\n\t}\n\n\t/**\n\t * Parse Spine\n\t * @private\n\t * @param  {node} spineXml\n\t * @param  {Packaging.manifest} manifest\n\t * @return {object} spine\n\t */\n\tparseSpine(spineXml, manifest){\n\t\tvar spine = [];\n\n\t\tvar selected = qsa(spineXml, \"itemref\");\n\t\tvar items = Array.prototype.slice.call(selected);\n\n\t\t// var epubcfi = new EpubCFI();\n\n\t\t//-- Add to array to maintain ordering and cross reference with manifest\n\t\titems.forEach(function(item, index){\n\t\t\tvar idref = item.getAttribute(\"idref\");\n\t\t\t// var cfiBase = epubcfi.generateChapterComponent(spineNodeIndex, index, Id);\n\t\t\tvar props = item.getAttribute(\"properties\") || \"\";\n\t\t\tvar propArray = props.length ? props.split(\" \") : [];\n\t\t\t// var manifestProps = manifest[Id].properties;\n\t\t\t// var manifestPropArray = manifestProps.length ? manifestProps.split(\" \") : [];\n\n\t\t\tvar itemref = {\n\t\t\t\t\"id\" : item.getAttribute(\"id\"),\n\t\t\t\t\"idref\" : idref,\n\t\t\t\t\"linear\" : item.getAttribute(\"linear\") || \"yes\",\n\t\t\t\t\"properties\" : propArray,\n\t\t\t\t// \"href\" : manifest[Id].href,\n\t\t\t\t// \"url\" :  manifest[Id].url,\n\t\t\t\t\"index\" : index\n\t\t\t\t// \"cfiBase\" : cfiBase\n\t\t\t};\n\t\t\tspine.push(itemref);\n\t\t});\n\n\t\treturn spine;\n\t}\n\n\t/**\n\t * Find Unique Identifier\n\t * @private\n\t * @param  {node} packageXml\n\t * @return {string} Unique Identifier text\n\t */\n\tfindUniqueIdentifier(packageXml){\n\t\tvar uniqueIdentifierId = packageXml.documentElement.getAttribute(\"unique-identifier\");\n\t\tif (! uniqueIdentifierId) {\n\t\t\treturn \"\";\n\t\t}\n\t\tvar identifier = packageXml.getElementById(uniqueIdentifierId);\n\t\tif (! identifier) {\n\t\t\treturn \"\";\n\t\t}\n\n\t\tif (identifier.localName === \"identifier\" && identifier.namespaceURI === \"http://purl.org/dc/elements/1.1/\") {\n\t\t\treturn identifier.childNodes.length > 0 ? identifier.childNodes[0].nodeValue.trim() : \"\";\n\t\t}\n\n\t\treturn \"\";\n\t}\n\n\t/**\n\t * Find TOC NAV\n\t * @private\n\t * @param {element} manifestNode\n\t * @return {string}\n\t */\n\tfindNavPath(manifestNode){\n\t\t// Find item with property \"nav\"\n\t\t// Should catch nav regardless of order\n\t\t// var node = manifestNode.querySelector(\"item[properties$='nav'], item[properties^='nav '], item[properties*=' nav ']\");\n\t\tvar node = qsp(manifestNode, \"item\", {\"properties\":\"nav\"});\n\t\treturn node ? node.getAttribute(\"href\") : false;\n\t}\n\n\t/**\n\t * Find TOC NCX\n\t * media-type=\"application/x-dtbncx+xml\" href=\"toc.ncx\"\n\t * @private\n\t * @param {element} manifestNode\n\t * @param {element} spineNode\n\t * @return {string}\n\t */\n\tfindNcxPath(manifestNode, spineNode){\n\t\t// var node = manifestNode.querySelector(\"item[media-type='application/x-dtbncx+xml']\");\n\t\tvar node = qsp(manifestNode, \"item\", {\"media-type\":\"application/x-dtbncx+xml\"});\n\t\tvar tocId;\n\n\t\t// If we can't find the toc by media-type then try to look for id of the item in the spine attributes as\n\t\t// according to http://www.idpf.org/epub/20/spec/OPF_2.0.1_draft.htm#Section2.4.1.2,\n\t\t// \"The item that describes the NCX must be referenced by the spine toc attribute.\"\n\t\tif (!node) {\n\t\t\ttocId = spineNode.getAttribute(\"toc\");\n\t\t\tif(tocId) {\n\t\t\t\t// node = manifestNode.querySelector(\"item[id='\" + tocId + \"']\");\n\t\t\t\tnode = manifestNode.querySelector(`#${tocId}`);\n\t\t\t}\n\t\t}\n\n\t\treturn node ? node.getAttribute(\"href\") : false;\n\t}\n\n\t/**\n\t * Find the Cover Path\n\t * <item properties=\"cover-image\" id=\"ci\" href=\"cover.svg\" media-type=\"image/svg+xml\" />\n\t * Fallback for Epub 2.0\n\t * @private\n\t * @param  {node} packageXml\n\t * @return {string} href\n\t */\n\tfindCoverPath(packageXml){\n\t\tvar pkg = qs(packageXml, \"package\");\n\t\tvar epubVersion = pkg.getAttribute(\"version\");\n\t\t\n\t\t// Try parsing cover with epub 3.\n\t\t// var node = packageXml.querySelector(\"item[properties='cover-image']\");\n\t\tvar node = qsp(packageXml, \"item\", {\"properties\":\"cover-image\"});\n\t\tif (node) return node.getAttribute(\"href\");\n\t\t\n\t\t// Fallback to epub 2.\n\t\tvar metaCover = qsp(packageXml, \"meta\", {\"name\":\"cover\"});\n\n\t\tif (metaCover) {\n\t\t\tvar coverId = metaCover.getAttribute(\"content\");\n\t\t\t// var cover = packageXml.querySelector(\"item[id='\" + coverId + \"']\");\n\t\t\tvar cover = packageXml.getElementById(coverId);\n\t\t\treturn cover ? cover.getAttribute(\"href\") : \"\";\n\t\t}\n\t\telse {\n\t\t\treturn false;\n\t\t}\n\t}\n\n\t/**\n\t * Get text of a namespaced element\n\t * @private\n\t * @param  {node} xml\n\t * @param  {string} tag\n\t * @return {string} text\n\t */\n\tgetElementText(xml, tag){\n\t\tvar found = xml.getElementsByTagNameNS(\"http://purl.org/dc/elements/1.1/\", tag);\n\t\tvar el;\n\n\t\tif(!found || found.length === 0) return \"\";\n\n\t\tel = found[0];\n\n\t\tif(el.childNodes.length){\n\t\t\treturn el.childNodes[0].nodeValue;\n\t\t}\n\n\t\treturn \"\";\n\n\t}\n\n\t/**\n\t * Get text by property\n\t * @private\n\t * @param  {node} xml\n\t * @param  {string} property\n\t * @return {string} text\n\t */\n\tgetPropertyText(xml, property){\n\t\tvar el = qsp(xml, \"meta\", {\"property\":property});\n\n\t\tif(el && el.childNodes.length){\n\t\t\treturn el.childNodes[0].nodeValue;\n\t\t}\n\n\t\treturn \"\";\n\t}\n\n\t/**\n\t * Load JSON Manifest\n\t * @param  {document} packageDocument OPF XML\n\t * @return {object} parsed package parts\n\t */\n\tload(json) {\n\t\tthis.metadata = json.metadata;\n\n\t\tlet spine = json.readingOrder || json.spine;\n\t\tthis.spine = spine.map((item, index) =>{\n\t\t\titem.index = index;\n\t\t\titem.linear = item.linear || \"yes\";\n\t\t\treturn item;\n\t\t});\n\n\t\tjson.resources.forEach((item, index) => {\n\t\t\tthis.manifest[index] = item;\n\n\t\t\tif (item.rel && item.rel[0] === \"cover\") {\n\t\t\t\tthis.coverPath = item.href;\n\t\t\t}\n\t\t});\n\n\t\tthis.spineNodeIndex = 0;\n\n\t\tthis.toc = json.toc.map((item, index) =>{\n\t\t\titem.label = item.title;\n\t\t\treturn item;\n\t\t});\n\n\t\treturn {\n\t\t\t\"metadata\" : this.metadata,\n\t\t\t\"spine\"    : this.spine,\n\t\t\t\"manifest\" : this.manifest,\n\t\t\t\"navPath\"  : this.navPath,\n\t\t\t\"ncxPath\"  : this.ncxPath,\n\t\t\t\"coverPath\": this.coverPath,\n\t\t\t\"spineNodeIndex\" : this.spineNodeIndex,\n\t\t\t\"toc\" : this.toc\n\t\t};\n\t}\n\n\tdestroy() {\n\t\tthis.manifest = undefined;\n\t\tthis.navPath = undefined;\n\t\tthis.ncxPath = undefined;\n\t\tthis.coverPath = undefined;\n\t\tthis.spineNodeIndex = undefined;\n\t\tthis.spine = undefined;\n\t\tthis.metadata = undefined;\n\t}\n}\n\nexport default Packaging;\n","import {qs, qsa, querySelectorByType, filterChildren, getParentByTagName} from \"./utils/core\";\n\n/**\n * Navigation Parser\n * @param {document} xml navigation html / xhtml / ncx\n */\nclass Navigation {\n\tconstructor(xml) {\n\t\tthis.toc = [];\n\t\tthis.tocByHref = {};\n\t\tthis.tocById = {};\n\n\t\tthis.landmarks = [];\n\t\tthis.landmarksByType = {};\n\n\t\tthis.length = 0;\n\t\tif (xml) {\n\t\t\tthis.parse(xml);\n\t\t}\n\t}\n\n\t/**\n\t * Parse out the navigation items\n\t * @param {document} xml navigation html / xhtml / ncx\n\t */\n\tparse(xml) {\n\t\tlet isXml = xml.nodeType;\n\t\tlet html;\n\t\tlet ncx;\n\n\t\tif (isXml) {\n\t\t\thtml = qs(xml, \"html\");\n\t\t\tncx = qs(xml, \"ncx\");\n\t\t}\n\n\t\tif (!isXml) {\n\t\t\tthis.toc = this.load(xml);\n\t\t} else if(html) {\n\t\t\tthis.toc = this.parseNav(xml);\n\t\t\tthis.landmarks = this.parseLandmarks(xml);\n\t\t} else if(ncx){\n\t\t\tthis.toc = this.parseNcx(xml);\n\t\t}\n\n\t\tthis.length = 0;\n\n\t\tthis.unpack(this.toc);\n\t}\n\n\t/**\n\t * Unpack navigation items\n\t * @private\n\t * @param  {array} toc\n\t */\n\tunpack(toc) {\n\t\tvar item;\n\n\t\tfor (var i = 0; i < toc.length; i++) {\n\t\t\titem = toc[i];\n\n\t\t\tif (item.href) {\n\t\t\t\tthis.tocByHref[item.href] = i;\n\t\t\t}\n\n\t\t\tif (item.id) {\n\t\t\t\tthis.tocById[item.id] = i;\n\t\t\t}\n\n\t\t\tthis.length++;\n\n\t\t\tif (item.subitems.length) {\n\t\t\t\tthis.unpack(item.subitems);\n\t\t\t}\n\t\t}\n\n\t}\n\n\t/**\n\t * Get an item from the navigation\n\t * @param  {string} target\n\t * @return {object} navItem\n\t */\n\tget(target) {\n\t\tvar index;\n\n\t\tif(!target) {\n\t\t\treturn this.toc;\n\t\t}\n\n\t\tif(target.indexOf(\"#\") === 0) {\n\t\t\tindex = this.tocById[target.substring(1)];\n\t\t} else if(target in this.tocByHref){\n\t\t\tindex = this.tocByHref[target];\n\t\t}\n\n\t\treturn this.getByIndex(target, index, this.toc);\n\t}\n\n\t/**\n\t * Get an item from navigation subitems recursively by index\n\t * @param  {string} target\n\t * @param  {number} index\n\t * @param  {array} navItems\n\t * @return {object} navItem\n\t */\n\tgetByIndex(target, index, navItems) {\n\t\tif (navItems.length === 0) {\n\t\t\treturn;\n\t\t}\n\n\t\tconst item = navItems[index];\n\t\tif (item && (target === item.id || target === item.href)) {\n\t\t\treturn item;\n\t\t} else {\n\t\t\tlet result;\n\t\t\tfor (let i = 0; i < navItems.length; ++i) {\n\t\t\t\tresult = this.getByIndex(target, index, navItems[i].subitems);\n\t\t\t\tif (result) {\n\t\t\t\t\tbreak;\n\t\t\t\t}\n\t\t\t}\n\t\t\treturn result;\n\t\t}\n\t}\n\n\t/**\n\t * Get a landmark by type\n\t * List of types: https://idpf.github.io/epub-vocabs/structure/\n\t * @param  {string} type\n\t * @return {object} landmarkItem\n\t */\n\tlandmark(type) {\n\t\tvar index;\n\n\t\tif(!type) {\n\t\t\treturn this.landmarks;\n\t\t}\n\n\t\tindex = this.landmarksByType[type];\n\n\t\treturn this.landmarks[index];\n\t}\n\n\t/**\n\t * Parse toc from a Epub > 3.0 Nav\n\t * @private\n\t * @param  {document} navHtml\n\t * @return {array} navigation list\n\t */\n\tparseNav(navHtml){\n\t\tvar navElement = querySelectorByType(navHtml, \"nav\", \"toc\");\n\t\tvar list = [];\n\n\t\tif (!navElement) return list;\n\n\t\tlet navList = filterChildren(navElement, \"ol\", true);\n\t\tif (!navList) return list;\n\n\t\tlist = this.parseNavList(navList);\n\t\treturn list;\n\t}\n\n\t/**\n\t * Parses lists in the toc\n\t * @param  {document} navListHtml\n\t * @param  {string} parent id\n\t * @return {array} navigation list\n\t */\n\tparseNavList(navListHtml, parent) {\n\t\tconst result = [];\n\n\t\tif (!navListHtml) return result;\n\t\tif (!navListHtml.children) return result;\n\t\t\n\t\tfor (let i = 0; i < navListHtml.children.length; i++) {\n\t\t\tconst item = this.navItem(navListHtml.children[i], parent);\n\n\t\t\tif (item) {\n\t\t\t\tresult.push(item);\n\t\t\t}\n\t\t}\n\n\t\treturn result;\n\t}\n\n\t/**\n\t * Create a navItem\n\t * @private\n\t * @param  {element} item\n\t * @return {object} navItem\n\t */\n\tnavItem(item, parent) {\n\t\tlet id = item.getAttribute(\"id\") || undefined;\n\t\tlet content = filterChildren(item, \"a\", true)\n\t\t\t|| filterChildren(item, \"span\", true);\n\n\t\tif (!content) {\n\t\t\treturn;\n\t\t}\n\n\t\tlet src = content.getAttribute(\"href\") || \"\";\n\t\t\n\t\tif (!id) {\n\t\t\tid = src;\n\t\t}\n\t\tlet text = content.textContent || \"\";\n\n\t\tlet subitems = [];\n\t\tlet nested = filterChildren(item, \"ol\", true);\n\t\tif (nested) {\n\t\t\tsubitems = \tthis.parseNavList(nested, id);\n\t\t}\n\n\t\treturn {\n\t\t\t\"id\": id,\n\t\t\t\"href\": src,\n\t\t\t\"label\": text,\n\t\t\t\"subitems\" : subitems,\n\t\t\t\"parent\" : parent\n\t\t};\n\t}\n\n\t/**\n\t * Parse landmarks from a Epub > 3.0 Nav\n\t * @private\n\t * @param  {document} navHtml\n\t * @return {array} landmarks list\n\t */\n\tparseLandmarks(navHtml){\n\t\tvar navElement = querySelectorByType(navHtml, \"nav\", \"landmarks\");\n\t\tvar navItems = navElement ? qsa(navElement, \"li\") : [];\n\t\tvar length = navItems.length;\n\t\tvar i;\n\t\tvar list = [];\n\t\tvar item;\n\n\t\tif(!navItems || length === 0) return list;\n\n\t\tfor (i = 0; i < length; ++i) {\n\t\t\titem = this.landmarkItem(navItems[i]);\n\t\t\tif (item) {\n\t\t\t\tlist.push(item);\n\t\t\t\tthis.landmarksByType[item.type] = i;\n\t\t\t}\n\t\t}\n\n\t\treturn list;\n\t}\n\n\t/**\n\t * Create a landmarkItem\n\t * @private\n\t * @param  {element} item\n\t * @return {object} landmarkItem\n\t */\n\tlandmarkItem(item){\n\t\tlet content = filterChildren(item, \"a\", true);\n\n\t\tif (!content) {\n\t\t\treturn;\n\t\t}\n\n\t\tlet type = content.getAttributeNS(\"http://www.idpf.org/2007/ops\", \"type\") || undefined;\n\t\tlet href = content.getAttribute(\"href\") || \"\";\n\t\tlet text = content.textContent || \"\";\n\n\t\treturn {\n\t\t\t\"href\": href,\n\t\t\t\"label\": text,\n\t\t\t\"type\" : type\n\t\t};\n\t}\n\n\t/**\n\t * Parse from a Epub > 3.0 NC\n\t * @private\n\t * @param  {document} navHtml\n\t * @return {array} navigation list\n\t */\n\tparseNcx(tocXml){\n\t\tvar navPoints = qsa(tocXml, \"navPoint\");\n\t\tvar length = navPoints.length;\n\t\tvar i;\n\t\tvar toc = {};\n\t\tvar list = [];\n\t\tvar item, parent;\n\n\t\tif(!navPoints || length === 0) return list;\n\n\t\tfor (i = 0; i < length; ++i) {\n\t\t\titem = this.ncxItem(navPoints[i]);\n\t\t\ttoc[item.id] = item;\n\t\t\tif(!item.parent) {\n\t\t\t\tlist.push(item);\n\t\t\t} else {\n\t\t\t\tparent = toc[item.parent];\n\t\t\t\tparent.subitems.push(item);\n\t\t\t}\n\t\t}\n\n\t\treturn list;\n\t}\n\n\t/**\n\t * Create a ncxItem\n\t * @private\n\t * @param  {element} item\n\t * @return {object} ncxItem\n\t */\n\tncxItem(item){\n\t\tvar id = item.getAttribute(\"id\") || false,\n\t\t\t\tcontent = qs(item, \"content\"),\n\t\t\t\tsrc = content.getAttribute(\"src\"),\n\t\t\t\tnavLabel = qs(item, \"navLabel\"),\n\t\t\t\ttext = navLabel.textContent ? navLabel.textContent : \"\",\n\t\t\t\tsubitems = [],\n\t\t\t\tparentNode = item.parentNode,\n\t\t\t\tparent;\n\n\t\tif(parentNode && (parentNode.nodeName === \"navPoint\" || parentNode.nodeName.split(':').slice(-1)[0] === \"navPoint\")) {\n\t\t\tparent = parentNode.getAttribute(\"id\");\n\t\t}\n\n\n\t\treturn {\n\t\t\t\"id\": id,\n\t\t\t\"href\": src,\n\t\t\t\"label\": text,\n\t\t\t\"subitems\" : subitems,\n\t\t\t\"parent\" : parent\n\t\t};\n\t}\n\n\t/**\n\t * Load Spine Items\n\t * @param  {object} json the items to be loaded\n\t * @return {Array} navItems\n\t */\n\tload(json) {\n\t\treturn json.map(item => {\n\t\t\titem.label = item.title;\n\t\t\titem.subitems = item.children ? this.load(item.children) : [];\n\t\t\treturn item;\n\t\t});\n\t}\n\n\t/**\n\t * forEach pass through\n\t * @param  {Function} fn function to run on each item\n\t * @return {method} forEach loop\n\t */\n\tforEach(fn) {\n\t\treturn this.toc.forEach(fn);\n\t}\n}\n\nexport default Navigation;\n","/*\n From Zip.js, by Gildas Lormeau\nedited down\n */\n\nvar table = {\n\t\"application\" : {\n\t\t\"ecmascript\" : [ \"es\", \"ecma\" ],\n\t\t\"javascript\" : \"js\",\n\t\t\"ogg\" : \"ogx\",\n\t\t\"pdf\" : \"pdf\",\n\t\t\"postscript\" : [ \"ps\", \"ai\", \"eps\", \"epsi\", \"epsf\", \"eps2\", \"eps3\" ],\n\t\t\"rdf+xml\" : \"rdf\",\n\t\t\"smil\" : [ \"smi\", \"smil\" ],\n\t\t\"xhtml+xml\" : [ \"xhtml\", \"xht\" ],\n\t\t\"xml\" : [ \"xml\", \"xsl\", \"xsd\", \"opf\", \"ncx\" ],\n\t\t\"zip\" : \"zip\",\n\t\t\"x-httpd-eruby\" : \"rhtml\",\n\t\t\"x-latex\" : \"latex\",\n\t\t\"x-maker\" : [ \"frm\", \"maker\", \"frame\", \"fm\", \"fb\", \"book\", \"fbdoc\" ],\n\t\t\"x-object\" : \"o\",\n\t\t\"x-shockwave-flash\" : [ \"swf\", \"swfl\" ],\n\t\t\"x-silverlight\" : \"scr\",\n\t\t\"epub+zip\" : \"epub\",\n\t\t\"font-tdpfr\" : \"pfr\",\n\t\t\"inkml+xml\" : [ \"ink\", \"inkml\" ],\n\t\t\"json\" : \"json\",\n\t\t\"jsonml+json\" : \"jsonml\",\n\t\t\"mathml+xml\" : \"mathml\",\n\t\t\"metalink+xml\" : \"metalink\",\n\t\t\"mp4\" : \"mp4s\",\n\t\t// \"oebps-package+xml\" : \"opf\",\n\t\t\"omdoc+xml\" : \"omdoc\",\n\t\t\"oxps\" : \"oxps\",\n\t\t\"vnd.amazon.ebook\" : \"azw\",\n\t\t\"widget\" : \"wgt\",\n\t\t// \"x-dtbncx+xml\" : \"ncx\",\n\t\t\"x-dtbook+xml\" : \"dtb\",\n\t\t\"x-dtbresource+xml\" : \"res\",\n\t\t\"x-font-bdf\" : \"bdf\",\n\t\t\"x-font-ghostscript\" : \"gsf\",\n\t\t\"x-font-linux-psf\" : \"psf\",\n\t\t\"x-font-otf\" : \"otf\",\n\t\t\"x-font-pcf\" : \"pcf\",\n\t\t\"x-font-snf\" : \"snf\",\n\t\t\"x-font-ttf\" : [ \"ttf\", \"ttc\" ],\n\t\t\"x-font-type1\" : [ \"pfa\", \"pfb\", \"pfm\", \"afm\" ],\n\t\t\"x-font-woff\" : \"woff\",\n\t\t\"x-mobipocket-ebook\" : [ \"prc\", \"mobi\" ],\n\t\t\"x-mspublisher\" : \"pub\",\n\t\t\"x-nzb\" : \"nzb\",\n\t\t\"x-tgif\" : \"obj\",\n\t\t\"xaml+xml\" : \"xaml\",\n\t\t\"xml-dtd\" : \"dtd\",\n\t\t\"xproc+xml\" : \"xpl\",\n\t\t\"xslt+xml\" : \"xslt\",\n\t\t\"internet-property-stream\" : \"acx\",\n\t\t\"x-compress\" : \"z\",\n\t\t\"x-compressed\" : \"tgz\",\n\t\t\"x-gzip\" : \"gz\",\n\t},\n\t\"audio\" : {\n\t\t\"flac\" : \"flac\",\n\t\t\"midi\" : [ \"mid\", \"midi\", \"kar\", \"rmi\" ],\n\t\t\"mpeg\" : [ \"mpga\", \"mpega\", \"mp2\", \"mp3\", \"m4a\", \"mp2a\", \"m2a\", \"m3a\" ],\n\t\t\"mpegurl\" : \"m3u\",\n\t\t\"ogg\" : [ \"oga\", \"ogg\", \"spx\" ],\n\t\t\"x-aiff\" : [ \"aif\", \"aiff\", \"aifc\" ],\n\t\t\"x-ms-wma\" : \"wma\",\n\t\t\"x-wav\" : \"wav\",\n\t\t\"adpcm\" : \"adp\",\n\t\t\"mp4\" : \"mp4a\",\n\t\t\"webm\" : \"weba\",\n\t\t\"x-aac\" : \"aac\",\n\t\t\"x-caf\" : \"caf\",\n\t\t\"x-matroska\" : \"mka\",\n\t\t\"x-pn-realaudio-plugin\" : \"rmp\",\n\t\t\"xm\" : \"xm\",\n\t\t\"mid\" : [ \"mid\", \"rmi\" ]\n\t},\n\t\"image\" : {\n\t\t\"gif\" : \"gif\",\n\t\t\"ief\" : \"ief\",\n\t\t\"jpeg\" : [ \"jpeg\", \"jpg\", \"jpe\" ],\n\t\t\"pcx\" : \"pcx\",\n\t\t\"png\" : \"png\",\n\t\t\"svg+xml\" : [ \"svg\", \"svgz\" ],\n\t\t\"tiff\" : [ \"tiff\", \"tif\" ],\n\t\t\"x-icon\" : \"ico\",\n\t\t\"bmp\" : \"bmp\",\n\t\t\"webp\" : \"webp\",\n\t\t\"x-pict\" : [ \"pic\", \"pct\" ],\n\t\t\"x-tga\" : \"tga\",\n\t\t\"cis-cod\" : \"cod\"\n\t},\n\t\"text\" : {\n\t\t\"cache-manifest\" : [ \"manifest\", \"appcache\" ],\n\t\t\"css\" : \"css\",\n\t\t\"csv\" : \"csv\",\n\t\t\"html\" : [ \"html\", \"htm\", \"shtml\", \"stm\" ],\n\t\t\"mathml\" : \"mml\",\n\t\t\"plain\" : [ \"txt\", \"text\", \"brf\", \"conf\", \"def\", \"list\", \"log\", \"in\", \"bas\" ],\n\t\t\"richtext\" : \"rtx\",\n\t\t\"tab-separated-values\" : \"tsv\",\n\t\t\"x-bibtex\" : \"bib\"\n\t},\n\t\"video\" : {\n\t\t\"mpeg\" : [ \"mpeg\", \"mpg\", \"mpe\", \"m1v\", \"m2v\", \"mp2\", \"mpa\", \"mpv2\" ],\n\t\t\"mp4\" : [ \"mp4\", \"mp4v\", \"mpg4\" ],\n\t\t\"quicktime\" : [ \"qt\", \"mov\" ],\n\t\t\"ogg\" : \"ogv\",\n\t\t\"vnd.mpegurl\" : [ \"mxu\", \"m4u\" ],\n\t\t\"x-flv\" : \"flv\",\n\t\t\"x-la-asf\" : [ \"lsf\", \"lsx\" ],\n\t\t\"x-mng\" : \"mng\",\n\t\t\"x-ms-asf\" : [ \"asf\", \"asx\", \"asr\" ],\n\t\t\"x-ms-wm\" : \"wm\",\n\t\t\"x-ms-wmv\" : \"wmv\",\n\t\t\"x-ms-wmx\" : \"wmx\",\n\t\t\"x-ms-wvx\" : \"wvx\",\n\t\t\"x-msvideo\" : \"avi\",\n\t\t\"x-sgi-movie\" : \"movie\",\n\t\t\"x-matroska\" : [ \"mpv\", \"mkv\", \"mk3d\", \"mks\" ],\n\t\t\"3gpp2\" : \"3g2\",\n\t\t\"h261\" : \"h261\",\n\t\t\"h263\" : \"h263\",\n\t\t\"h264\" : \"h264\",\n\t\t\"jpeg\" : \"jpgv\",\n\t\t\"jpm\" : [ \"jpm\", \"jpgm\" ],\n\t\t\"mj2\" : [ \"mj2\", \"mjp2\" ],\n\t\t\"vnd.ms-playready.media.pyv\" : \"pyv\",\n\t\t\"vnd.uvvu.mp4\" : [ \"uvu\", \"uvvu\" ],\n\t\t\"vnd.vivo\" : \"viv\",\n\t\t\"webm\" : \"webm\",\n\t\t\"x-f4v\" : \"f4v\",\n\t\t\"x-m4v\" : \"m4v\",\n\t\t\"x-ms-vob\" : \"vob\",\n\t\t\"x-smv\" : \"smv\"\n\t}\n};\n\nvar mimeTypes = (function() {\n\tvar type, subtype, val, index, mimeTypes = {};\n\tfor (type in table) {\n\t\tif (table.hasOwnProperty(type)) {\n\t\t\tfor (subtype in table[type]) {\n\t\t\t\tif (table[type].hasOwnProperty(subtype)) {\n\t\t\t\t\tval = table[type][subtype];\n\t\t\t\t\tif (typeof val == \"string\") {\n\t\t\t\t\t\tmimeTypes[val] = type + \"/\" + subtype;\n\t\t\t\t\t} else {\n\t\t\t\t\t\tfor (index = 0; index < val.length; index++) {\n\t\t\t\t\t\t\tmimeTypes[val[index]] = type + \"/\" + subtype;\n\t\t\t\t\t\t}\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\t}\n\treturn mimeTypes;\n})();\n\nvar defaultValue = \"text/plain\";//\"application/octet-stream\";\n\nfunction lookup(filename) {\n\treturn filename && mimeTypes[filename.split(\".\").pop().toLowerCase()] || defaultValue;\n};\n\nexport default { lookup };\n","import {substitute} from \"./utils/replacements\";\nimport {createBase64Url, createBlobUrl, blob2base64} from \"./utils/core\";\nimport Url from \"./utils/url\";\nimport mime from \"./utils/mime\";\nimport Path from \"./utils/path\";\nimport path from \"path-webpack\";\n\n/**\n * Handle Package Resources\n * @class\n * @param {Manifest} manifest\n * @param {object} [options]\n * @param {string} [options.replacements=\"base64\"]\n * @param {Archive} [options.archive]\n * @param {method} [options.resolver]\n */\nclass Resources {\n\tconstructor(manifest, options) {\n\t\tthis.settings = {\n\t\t\treplacements: (options && options.replacements) || \"base64\",\n\t\t\tarchive: (options && options.archive),\n\t\t\tresolver: (options && options.resolver),\n\t\t\trequest: (options && options.request)\n\t\t};\n\n\t\tthis.process(manifest);\n\t}\n\n\t/**\n\t * Process resources\n\t * @param {Manifest} manifest\n\t */\n\tprocess(manifest){\n\t\tthis.manifest = manifest;\n\t\tthis.resources = Object.keys(manifest).\n\t\t\tmap(function (key){\n\t\t\t\treturn manifest[key];\n\t\t\t});\n\n\t\tthis.replacementUrls = [];\n\n\t\tthis.html = [];\n\t\tthis.assets = [];\n\t\tthis.css = [];\n\n\t\tthis.urls = [];\n\t\tthis.cssUrls = [];\n\n\t\tthis.split();\n\t\tthis.splitUrls();\n\t}\n\n\t/**\n\t * Split resources by type\n\t * @private\n\t */\n\tsplit(){\n\n\t\t// HTML\n\t\tthis.html = this.resources.\n\t\t\tfilter(function (item){\n\t\t\t\tif (item.type === \"application/xhtml+xml\" ||\n\t\t\t\t\t\titem.type === \"text/html\") {\n\t\t\t\t\treturn true;\n\t\t\t\t}\n\t\t\t});\n\n\t\t// Exclude HTML\n\t\tthis.assets = this.resources.\n\t\t\tfilter(function (item){\n\t\t\t\tif (item.type !== \"application/xhtml+xml\" &&\n\t\t\t\t\t\titem.type !== \"text/html\") {\n\t\t\t\t\treturn true;\n\t\t\t\t}\n\t\t\t});\n\n\t\t// Only CSS\n\t\tthis.css = this.resources.\n\t\t\tfilter(function (item){\n\t\t\t\tif (item.type === \"text/css\") {\n\t\t\t\t\treturn true;\n\t\t\t\t}\n\t\t\t});\n\t}\n\n\t/**\n\t * Convert split resources into Urls\n\t * @private\n\t */\n\tsplitUrls(){\n\n\t\t// All Assets Urls\n\t\tthis.urls = this.assets.\n\t\t\tmap(function(item) {\n\t\t\t\treturn item.href;\n\t\t\t}.bind(this));\n\n\t\t// Css Urls\n\t\tthis.cssUrls = this.css.map(function(item) {\n\t\t\treturn item.href;\n\t\t});\n\n\t}\n\n\t/**\n\t * Create a url to a resource\n\t * @param {string} url\n\t * @return {Promise<string>} Promise resolves with url string\n\t */\n\tcreateUrl (url) {\n\t\tvar parsedUrl = new Url(url);\n\t\tvar mimeType = mime.lookup(parsedUrl.filename);\n\n\t\tif (this.settings.archive) {\n\t\t\treturn this.settings.archive.createUrl(url, {\"base64\": (this.settings.replacements === \"base64\")});\n\t\t} else {\n\t\t\tif (this.settings.replacements === \"base64\") {\n\t\t\t\treturn this.settings.request(url, 'blob')\n\t\t\t\t\t.then((blob) => {\n\t\t\t\t\t\treturn blob2base64(blob);\n\t\t\t\t\t})\n\t\t\t\t\t.then((blob) => {\n\t\t\t\t\t\treturn createBase64Url(blob, mimeType);\n\t\t\t\t\t});\n\t\t\t} else {\n\t\t\t\treturn this.settings.request(url, 'blob').then((blob) => {\n\t\t\t\t\treturn createBlobUrl(blob, mimeType);\n\t\t\t\t})\n\t\t\t}\n\t\t}\n\t}\n\n\t/**\n\t * Create blob urls for all the assets\n\t * @return {Promise}         returns replacement urls\n\t */\n\treplacements(){\n\t\tif (this.settings.replacements === \"none\") {\n\t\t\treturn new Promise(function(resolve) {\n\t\t\t\tresolve(this.urls);\n\t\t\t}.bind(this));\n\t\t}\n\n\t\tvar replacements = this.urls.map( (url) => {\n\t\t\t\tvar absolute = this.settings.resolver(url);\n\n\t\t\t\treturn this.createUrl(absolute).\n\t\t\t\t\tcatch((err) => {\n\t\t\t\t\t\tconsole.error(err);\n\t\t\t\t\t\treturn null;\n\t\t\t\t\t});\n\t\t\t});\n\n\t\treturn Promise.all(replacements)\n\t\t\t.then( (replacementUrls) => {\n\t\t\t\tthis.replacementUrls = replacementUrls.filter((url) => {\n\t\t\t\t\treturn (typeof(url) === \"string\");\n\t\t\t\t});\n\t\t\t\treturn replacementUrls;\n\t\t\t});\n\t}\n\n\t/**\n\t * Replace URLs in CSS resources\n\t * @private\n\t * @param  {Archive} [archive]\n\t * @param  {method} [resolver]\n\t * @return {Promise}\n\t */\n\treplaceCss(archive, resolver){\n\t\tvar replaced = [];\n\t\tarchive = archive || this.settings.archive;\n\t\tresolver = resolver || this.settings.resolver;\n\t\tthis.cssUrls.forEach(function(href) {\n\t\t\tvar replacement = this.createCssFile(href, archive, resolver)\n\t\t\t\t.then(function (replacementUrl) {\n\t\t\t\t\t// switch the url in the replacementUrls\n\t\t\t\t\tvar indexInUrls = this.urls.indexOf(href);\n\t\t\t\t\tif (indexInUrls > -1) {\n\t\t\t\t\t\tthis.replacementUrls[indexInUrls] = replacementUrl;\n\t\t\t\t\t}\n\t\t\t\t}.bind(this))\n\n\n\t\t\treplaced.push(replacement);\n\t\t}.bind(this));\n\t\treturn Promise.all(replaced);\n\t}\n\n\t/**\n\t * Create a new CSS file with the replaced URLs\n\t * @private\n\t * @param  {string} href the original css file\n\t * @return {Promise}  returns a BlobUrl to the new CSS file or a data url\n\t */\n\tcreateCssFile(href){\n\t\tvar newUrl;\n\n\t\tif (path.isAbsolute(href)) {\n\t\t\treturn new Promise(function(resolve){\n\t\t\t\tresolve();\n\t\t\t});\n\t\t}\n\n\t\tvar absolute = this.settings.resolver(href);\n\n\t\t// Get the text of the css file from the archive\n\t\tvar textResponse;\n\n\t\tif (this.settings.archive) {\n\t\t\ttextResponse = this.settings.archive.getText(absolute);\n\t\t} else {\n\t\t\ttextResponse = this.settings.request(absolute, \"text\");\n\t\t}\n\n\t\t// Get asset links relative to css file\n\t\tvar relUrls = this.urls.map( (assetHref) => {\n\t\t\tvar resolved = this.settings.resolver(assetHref);\n\t\t\tvar relative = new Path(absolute).relative(resolved);\n\n\t\t\treturn relative;\n\t\t});\n\n\t\tif (!textResponse) {\n\t\t\t// file not found, don't replace\n\t\t\treturn new Promise(function(resolve){\n\t\t\t\tresolve();\n\t\t\t});\n\t\t}\n\n\t\treturn textResponse.then( (text) => {\n\t\t\t// Replacements in the css text\n\t\t\ttext = substitute(text, relUrls, this.replacementUrls);\n\n\t\t\t// Get the new url\n\t\t\tif (this.settings.replacements === \"base64\") {\n\t\t\t\tnewUrl = createBase64Url(text, \"text/css\");\n\t\t\t} else {\n\t\t\t\tnewUrl = createBlobUrl(text, \"text/css\");\n\t\t\t}\n\n\t\t\treturn newUrl;\n\t\t}, (err) => {\n\t\t\t// handle response errors\n\t\t\treturn new Promise(function(resolve){\n\t\t\t\tresolve();\n\t\t\t});\n\t\t});\n\n\t}\n\n\t/**\n\t * Resolve all resources URLs relative to an absolute URL\n\t * @param  {string} absolute to be resolved to\n\t * @param  {resolver} [resolver]\n\t * @return {string[]} array with relative Urls\n\t */\n\trelativeTo(absolute, resolver){\n\t\tresolver = resolver || this.settings.resolver;\n\n\t\t// Get Urls relative to current sections\n\t\treturn this.urls.\n\t\t\tmap(function(href) {\n\t\t\t\tvar resolved = resolver(href);\n\t\t\t\tvar relative = new Path(absolute).relative(resolved);\n\t\t\t\treturn relative;\n\t\t\t}.bind(this));\n\t}\n\n\t/**\n\t * Get a URL for a resource\n\t * @param  {string} path\n\t * @return {string} url\n\t */\n\tget(path) {\n\t\tvar indexInUrls = this.urls.indexOf(path);\n\t\tif (indexInUrls === -1) {\n\t\t\treturn;\n\t\t}\n\t\tif (this.replacementUrls.length) {\n\t\t\treturn new Promise(function(resolve, reject) {\n\t\t\t\tresolve(this.replacementUrls[indexInUrls]);\n\t\t\t}.bind(this));\n\t\t} else {\n\t\t\treturn this.createUrl(path);\n\t\t}\n\t}\n\n\t/**\n\t * Substitute urls in content, with replacements,\n\t * relative to a url if provided\n\t * @param  {string} content\n\t * @param  {string} [url]   url to resolve to\n\t * @return {string}         content with urls substituted\n\t */\n\tsubstitute(content, url) {\n\t\tvar relUrls;\n\t\tif (url) {\n\t\t\trelUrls = this.relativeTo(url);\n\t\t} else {\n\t\t\trelUrls = this.urls;\n\t\t}\n\t\treturn substitute(content, relUrls, this.replacementUrls);\n\t}\n\n\tdestroy() {\n\t\tthis.settings = undefined;\n\t\tthis.manifest = undefined;\n\t\tthis.resources = undefined;\n\t\tthis.replacementUrls = undefined;\n\t\tthis.html = undefined;\n\t\tthis.assets = undefined;\n\t\tthis.css = undefined;\n\n\t\tthis.urls = undefined;\n\t\tthis.cssUrls = undefined;\n\t}\n}\n\nexport default Resources;\n","import EpubCFI from \"./epubcfi\";\nimport {\n\tqs,\n\tqsa,\n\tquerySelectorByType,\n\tindexOfSorted,\n\tlocationOf\n} from \"./utils/core\";\n\n/**\n * Page List Parser\n * @param {document} [xml]\n */\nclass PageList {\n\tconstructor(xml) {\n\t\tthis.pages = [];\n\t\tthis.locations = [];\n\t\tthis.epubcfi = new EpubCFI();\n\n\t\tthis.firstPage = 0;\n\t\tthis.lastPage = 0;\n\t\tthis.totalPages = 0;\n\n\t\tthis.toc = undefined;\n\t\tthis.ncx = undefined;\n\n\t\tif (xml) {\n\t\t\tthis.pageList = this.parse(xml);\n\t\t}\n\n\t\tif(this.pageList && this.pageList.length) {\n\t\t\tthis.process(this.pageList);\n\t\t}\n\t}\n\n\t/**\n\t * Parse PageList Xml\n\t * @param  {document} xml\n\t */\n\tparse(xml) {\n\t\tvar html = qs(xml, \"html\");\n\t\tvar ncx = qs(xml, \"ncx\");\n\n\t\tif(html) {\n\t\t\treturn this.parseNav(xml);\n\t\t} else if(ncx){\n\t\t\treturn this.parseNcx(xml);\n\t\t}\n\n\t}\n\n\t/**\n\t * Parse a Nav PageList\n\t * @private\n\t * @param  {node} navHtml\n\t * @return {PageList.item[]} list\n\t */\n\tparseNav(navHtml){\n\t\tvar navElement = querySelectorByType(navHtml, \"nav\", \"page-list\");\n\t\tvar navItems = navElement ? qsa(navElement, \"li\") : [];\n\t\tvar length = navItems.length;\n\t\tvar i;\n\t\tvar list = [];\n\t\tvar item;\n\n\t\tif(!navItems || length === 0) return list;\n\n\t\tfor (i = 0; i < length; ++i) {\n\t\t\titem = this.item(navItems[i]);\n\t\t\tlist.push(item);\n\t\t}\n\n\t\treturn list;\n\t}\n\n\tparseNcx(navXml) {\n\t\tvar list = [];\n\t\tvar i = 0;\n\t\tvar item;\n\t\tvar pageList;\n\t\tvar pageTargets;\n\t\tvar length = 0;\n\n\t\tpageList = qs(navXml, \"pageList\");\n\t\tif (!pageList) return list;\n\n\t\tpageTargets = qsa(pageList, \"pageTarget\");\n\t\tlength = pageTargets.length;\n\n\t\tif (!pageTargets || pageTargets.length === 0) {\n\t\t\treturn list;\n\t\t}\n\n\t\tfor (i = 0; i < length; ++i) {\n\t\t\titem = this.ncxItem(pageTargets[i]);\n\t\t\tlist.push(item);\n\t\t}\n\n\t\treturn list;\n\t}\n\n\tncxItem(item) {\n\t\tvar navLabel = qs(item, \"navLabel\");\n\t\tvar navLabelText = qs(navLabel, \"text\");\n\t\tvar pageText = navLabelText.textContent;\n\t\tvar content = qs(item, \"content\");\n\n\t\tvar href = content.getAttribute(\"src\");\n\t\tvar page = parseInt(pageText, 10);\n\n\t\treturn {\n\t\t\t\"href\": href,\n\t\t\t\"page\": page,\n\t\t};\n\t}\n\n\t/**\n\t * Page List Item\n\t * @private\n\t * @param  {node} item\n\t * @return {object} pageListItem\n\t */\n\titem(item){\n\t\tvar content = qs(item, \"a\"),\n\t\t\t\thref = content.getAttribute(\"href\") || \"\",\n\t\t\t\ttext = content.textContent || \"\",\n\t\t\t\tpage = parseInt(text),\n\t\t\t\tisCfi = href.indexOf(\"epubcfi\"),\n\t\t\t\tsplit,\n\t\t\t\tpackageUrl,\n\t\t\t\tcfi;\n\n\t\tif(isCfi != -1) {\n\t\t\tsplit = href.split(\"#\");\n\t\t\tpackageUrl = split[0];\n\t\t\tcfi = split.length > 1 ? split[1] : false;\n\t\t\treturn {\n\t\t\t\t\"cfi\" : cfi,\n\t\t\t\t\"href\" : href,\n\t\t\t\t\"packageUrl\" : packageUrl,\n\t\t\t\t\"page\" : page\n\t\t\t};\n\t\t} else {\n\t\t\treturn {\n\t\t\t\t\"href\" : href,\n\t\t\t\t\"page\" : page\n\t\t\t};\n\t\t}\n\t}\n\n\t/**\n\t * Process pageList items\n\t * @private\n\t * @param  {array} pageList\n\t */\n\tprocess(pageList){\n\t\tpageList.forEach(function(item){\n\t\t\tthis.pages.push(item.page);\n\t\t\tif (item.cfi) {\n\t\t\t\tthis.locations.push(item.cfi);\n\t\t\t}\n\t\t}, this);\n\t\tthis.firstPage = parseInt(this.pages[0]);\n\t\tthis.lastPage = parseInt(this.pages[this.pages.length-1]);\n\t\tthis.totalPages = this.lastPage - this.firstPage;\n\t}\n\n\t/**\n\t * Get a PageList result from a EpubCFI\n\t * @param  {string} cfi EpubCFI String\n\t * @return {number} page\n\t */\n\tpageFromCfi(cfi){\n\t\tvar pg = -1;\n\n\t\t// Check if the pageList has not been set yet\n\t\tif(this.locations.length === 0) {\n\t\t\treturn -1;\n\t\t}\n\n\t\t// TODO: check if CFI is valid?\n\n\t\t// check if the cfi is in the location list\n\t\t// var index = this.locations.indexOf(cfi);\n\t\tvar index = indexOfSorted(cfi, this.locations, this.epubcfi.compare);\n\t\tif(index != -1) {\n\t\t\tpg = this.pages[index];\n\t\t} else {\n\t\t\t// Otherwise add it to the list of locations\n\t\t\t// Insert it in the correct position in the locations page\n\t\t\t//index = EPUBJS.core.insert(cfi, this.locations, this.epubcfi.compare);\n\t\t\tindex = locationOf(cfi, this.locations, this.epubcfi.compare);\n\t\t\t// Get the page at the location just before the new one, or return the first\n\t\t\tpg = index-1 >= 0 ? this.pages[index-1] : this.pages[0];\n\t\t\tif(pg !== undefined) {\n\t\t\t\t// Add the new page in so that the locations and page array match up\n\t\t\t\t//this.pages.splice(index, 0, pg);\n\t\t\t} else {\n\t\t\t\tpg = -1;\n\t\t\t}\n\n\t\t}\n\t\treturn pg;\n\t}\n\n\t/**\n\t * Get an EpubCFI from a Page List Item\n\t * @param  {string | number} pg\n\t * @return {string} cfi\n\t */\n\tcfiFromPage(pg){\n\t\tvar cfi = -1;\n\t\t// check that pg is an int\n\t\tif(typeof pg != \"number\"){\n\t\t\tpg = parseInt(pg);\n\t\t}\n\n\t\t// check if the cfi is in the page list\n\t\t// Pages could be unsorted.\n\t\tvar index = this.pages.indexOf(pg);\n\t\tif(index != -1) {\n\t\t\tcfi = this.locations[index];\n\t\t}\n\t\t// TODO: handle pages not in the list\n\t\treturn cfi;\n\t}\n\n\t/**\n\t * Get a Page from Book percentage\n\t * @param  {number} percent\n\t * @return {number} page\n\t */\n\tpageFromPercentage(percent){\n\t\tvar pg = Math.round(this.totalPages * percent);\n\t\treturn pg;\n\t}\n\n\t/**\n\t * Returns a value between 0 - 1 corresponding to the location of a page\n\t * @param  {number} pg the page\n\t * @return {number} percentage\n\t */\n\tpercentageFromPage(pg){\n\t\tvar percentage = (pg - this.firstPage) / this.totalPages;\n\t\treturn Math.round(percentage * 1000) / 1000;\n\t}\n\n\t/**\n\t * Returns a value between 0 - 1 corresponding to the location of a cfi\n\t * @param  {string} cfi EpubCFI String\n\t * @return {number} percentage\n\t */\n\tpercentageFromCfi(cfi){\n\t\tvar pg = this.pageFromCfi(cfi);\n\t\tvar percentage = this.percentageFromPage(pg);\n\t\treturn percentage;\n\t}\n\n\t/**\n\t * Destroy\n\t */\n\tdestroy() {\n\t\tthis.pages = undefined;\n\t\tthis.locations = undefined;\n\t\tthis.epubcfi = undefined;\n\n\t\tthis.pageList = undefined;\n\n\t\tthis.toc = undefined;\n\t\tthis.ncx = undefined;\n\t}\n}\n\nexport default PageList;\n","import {defer, isXml, parse} from \"./utils/core\";\nimport request from \"./utils/request\";\nimport mime from \"./utils/mime\";\nimport Path from \"./utils/path\";\nimport JSZip from \"jszip/dist/jszip\";\n\n/**\n * Handles Unzipping a requesting files from an Epub Archive\n * @class\n */\nclass Archive {\n\n\tconstructor() {\n\t\tthis.zip = undefined;\n\t\tthis.urlCache = {};\n\n\t\tthis.checkRequirements();\n\n\t}\n\n\t/**\n\t * Checks to see if JSZip exists in global namspace,\n\t * Requires JSZip if it isn't there\n\t * @private\n\t */\n\tcheckRequirements(){\n\t\ttry {\n\t\t\tthis.zip = new JSZip();\n\t\t} catch (e) {\n\t\t\tthrow new Error(\"JSZip lib not loaded\");\n\t\t}\n\t}\n\n\t/**\n\t * Open an archive\n\t * @param  {binary} input\n\t * @param  {boolean} [isBase64] tells JSZip if the input data is base64 encoded\n\t * @return {Promise} zipfile\n\t */\n\topen(input, isBase64){\n\t\treturn this.zip.loadAsync(input, {\"base64\": isBase64});\n\t}\n\n\t/**\n\t * Load and Open an archive\n\t * @param  {string} zipUrl\n\t * @param  {boolean} [isBase64] tells JSZip if the input data is base64 encoded\n\t * @return {Promise} zipfile\n\t */\n\topenUrl(zipUrl, isBase64){\n\t\treturn request(zipUrl, \"binary\")\n\t\t\t.then(function(data){\n\t\t\t\treturn this.zip.loadAsync(data, {\"base64\": isBase64});\n\t\t\t}.bind(this));\n\t}\n\n\t/**\n\t * Request a url from the archive\n\t * @param  {string} url  a url to request from the archive\n\t * @param  {string} [type] specify the type of the returned result\n\t * @return {Promise<Blob | string | JSON | Document | XMLDocument>}\n\t */\n\trequest(url, type){\n\t\tvar deferred = new defer();\n\t\tvar response;\n\t\tvar path = new Path(url);\n\n\t\t// If type isn't set, determine it from the file extension\n\t\tif(!type) {\n\t\t\ttype = path.extension;\n\t\t}\n\n\t\tif(type == \"blob\"){\n\t\t\tresponse = this.getBlob(url);\n\t\t} else {\n\t\t\tresponse = this.getText(url);\n\t\t}\n\n\t\tif (response) {\n\t\t\tresponse.then(function (r) {\n\t\t\t\tlet result = this.handleResponse(r, type);\n\t\t\t\tdeferred.resolve(result);\n\t\t\t}.bind(this));\n\t\t} else {\n\t\t\tdeferred.reject({\n\t\t\t\tmessage : \"File not found in the epub: \" + url,\n\t\t\t\tstack : new Error().stack\n\t\t\t});\n\t\t}\n\t\treturn deferred.promise;\n\t}\n\n\t/**\n\t * Handle the response from request\n\t * @private\n\t * @param  {any} response\n\t * @param  {string} [type]\n\t * @return {any} the parsed result\n\t */\n\thandleResponse(response, type){\n\t\tvar r;\n\n\t\tif(type == \"json\") {\n\t\t\tr = JSON.parse(response);\n\t\t}\n\t\telse\n\t\tif(isXml(type)) {\n\t\t\tr = parse(response, \"text/xml\");\n\t\t}\n\t\telse\n\t\tif(type == \"xhtml\") {\n\t\t\tr = parse(response, \"application/xhtml+xml\");\n\t\t}\n\t\telse\n\t\tif(type == \"html\" || type == \"htm\") {\n\t\t\tr = parse(response, \"text/html\");\n\t\t } else {\n\t\t\t r = response;\n\t\t }\n\n\t\treturn r;\n\t}\n\n\t/**\n\t * Get a Blob from Archive by Url\n\t * @param  {string} url\n\t * @param  {string} [mimeType]\n\t * @return {Blob}\n\t */\n\tgetBlob(url, mimeType){\n\t\tvar decodededUrl = window.decodeURIComponent(url.substr(1)); // Remove first slash\n\t\tvar entry = this.zip.file(decodededUrl);\n\n\t\tif(entry) {\n\t\t\tmimeType = mimeType || mime.lookup(entry.name);\n\t\t\treturn entry.async(\"uint8array\").then(function(uint8array) {\n\t\t\t\treturn new Blob([uint8array], {type : mimeType});\n\t\t\t});\n\t\t}\n\t}\n\n\t/**\n\t * Get Text from Archive by Url\n\t * @param  {string} url\n\t * @param  {string} [encoding]\n\t * @return {string}\n\t */\n\tgetText(url, encoding){\n\t\tvar decodededUrl = window.decodeURIComponent(url.substr(1)); // Remove first slash\n\t\tvar entry = this.zip.file(decodededUrl);\n\n\t\tif(entry) {\n\t\t\treturn entry.async(\"string\").then(function(text) {\n\t\t\t\treturn text;\n\t\t\t});\n\t\t}\n\t}\n\n\t/**\n\t * Get a base64 encoded result from Archive by Url\n\t * @param  {string} url\n\t * @param  {string} [mimeType]\n\t * @return {string} base64 encoded\n\t */\n\tgetBase64(url, mimeType){\n\t\tvar decodededUrl = window.decodeURIComponent(url.substr(1)); // Remove first slash\n\t\tvar entry = this.zip.file(decodededUrl);\n\n\t\tif(entry) {\n\t\t\tmimeType = mimeType || mime.lookup(entry.name);\n\t\t\treturn entry.async(\"base64\").then(function(data) {\n\t\t\t\treturn \"data:\" + mimeType + \";base64,\" + data;\n\t\t\t});\n\t\t}\n\t}\n\n\t/**\n\t * Create a Url from an unarchived item\n\t * @param  {string} url\n\t * @param  {object} [options.base64] use base64 encoding or blob url\n\t * @return {Promise} url promise with Url string\n\t */\n\tcreateUrl(url, options){\n\t\tvar deferred = new defer();\n\t\tvar _URL = window.URL || window.webkitURL || window.mozURL;\n\t\tvar tempUrl;\n\t\tvar response;\n\t\tvar useBase64 = options && options.base64;\n\n\t\tif(url in this.urlCache) {\n\t\t\tdeferred.resolve(this.urlCache[url]);\n\t\t\treturn deferred.promise;\n\t\t}\n\n\t\tif (useBase64) {\n\t\t\tresponse = this.getBase64(url);\n\n\t\t\tif (response) {\n\t\t\t\tresponse.then(function(tempUrl) {\n\n\t\t\t\t\tthis.urlCache[url] = tempUrl;\n\t\t\t\t\tdeferred.resolve(tempUrl);\n\n\t\t\t\t}.bind(this));\n\n\t\t\t}\n\n\t\t} else {\n\n\t\t\tresponse = this.getBlob(url);\n\n\t\t\tif (response) {\n\t\t\t\tresponse.then(function(blob) {\n\n\t\t\t\t\ttempUrl = _URL.createObjectURL(blob);\n\t\t\t\t\tthis.urlCache[url] = tempUrl;\n\t\t\t\t\tdeferred.resolve(tempUrl);\n\n\t\t\t\t}.bind(this));\n\n\t\t\t}\n\t\t}\n\n\n\t\tif (!response) {\n\t\t\tdeferred.reject({\n\t\t\t\tmessage : \"File not found in the epub: \" + url,\n\t\t\t\tstack : new Error().stack\n\t\t\t});\n\t\t}\n\n\t\treturn deferred.promise;\n\t}\n\n\t/**\n\t * Revoke Temp Url for a archive item\n\t * @param  {string} url url of the item in the archive\n\t */\n\trevokeUrl(url){\n\t\tvar _URL = window.URL || window.webkitURL || window.mozURL;\n\t\tvar fromCache = this.urlCache[url];\n\t\tif(fromCache) _URL.revokeObjectURL(fromCache);\n\t}\n\n\tdestroy() {\n\t\tvar _URL = window.URL || window.webkitURL || window.mozURL;\n\t\tfor (let fromCache in this.urlCache) {\n\t\t\t_URL.revokeObjectURL(fromCache);\n\t\t}\n\t\tthis.zip = undefined;\n\t\tthis.urlCache = {};\n\t}\n}\n\nexport default Archive;\n","import {defer, isXml, parse} from \"./utils/core\";\nimport httpRequest from \"./utils/request\";\nimport mime from \"./utils/mime\";\nimport Path from \"./utils/path\";\nimport EventEmitter from \"event-emitter\";\nimport localforage from \"localforage\";\n\n/**\n * Handles saving and requesting files from local storage\n * @class\n * @param {string} name This should be the name of the application for modals\n * @param {function} [requester]\n * @param {function} [resolver]\n */\nclass Store {\n\n\tconstructor(name, requester, resolver) {\n\t\tthis.urlCache = {};\n\n\t\tthis.storage = undefined;\n\n\t\tthis.name = name;\n\t\tthis.requester = requester || httpRequest;\n\t\tthis.resolver = resolver;\n\n\t\tthis.online = true;\n\n\t\tthis.checkRequirements();\n\n\t\tthis.addListeners();\n\t}\n\n\t/**\n\t * Checks to see if localForage exists in global namspace,\n\t * Requires localForage if it isn't there\n\t * @private\n\t */\n\tcheckRequirements(){\n\t\ttry {\n\t\t\tlet store;\n\t\t\tif (typeof localforage === \"undefined\") {\n\t\t\t\tstore = localforage;\n\t\t\t}\n\t\t\tthis.storage = store.createInstance({\n\t\t\t\t\tname: this.name\n\t\t\t});\n\t\t} catch (e) {\n\t\t\tthrow new Error(\"localForage lib not loaded\");\n\t\t}\n\t}\n\n\t/**\n\t * Add online and offline event listeners\n\t * @private\n\t */\n\taddListeners() {\n\t\tthis._status = this.status.bind(this);\n\t\twindow.addEventListener('online',  this._status);\n\t  window.addEventListener('offline', this._status);\n\t}\n\n\t/**\n\t * Remove online and offline event listeners\n\t * @private\n\t */\n\tremoveListeners() {\n\t\twindow.removeEventListener('online',  this._status);\n\t  window.removeEventListener('offline', this._status);\n\t\tthis._status = undefined;\n\t}\n\n\t/**\n\t * Update the online / offline status\n\t * @private\n\t */\n\tstatus(event) {\n\t\tlet online = navigator.onLine;\n\t\tthis.online = online;\n\t\tif (online) {\n\t\t\tthis.emit(\"online\", this);\n\t\t} else {\n\t\t\tthis.emit(\"offline\", this);\n\t\t}\n\t}\n\n\t/**\n\t * Add all of a book resources to the store\n\t * @param  {Resources} resources  book resources\n\t * @param  {boolean} [force] force resaving resources\n\t * @return {Promise<object>} store objects\n\t */\n\tadd(resources, force) {\n\t\tlet mapped = resources.resources.map((item) => {\n\t\t\tlet { href } = item;\n\t\t\tlet url = this.resolver(href);\n\t\t\tlet encodedUrl = window.encodeURIComponent(url);\n\n\t\t\treturn this.storage.getItem(encodedUrl).then((item) => {\n\t\t\t\tif (!item || force) {\n\t\t\t\t\treturn this.requester(url, \"binary\")\n\t\t\t\t\t\t.then((data) => {\n\t\t\t\t\t\t\treturn this.storage.setItem(encodedUrl, data);\n\t\t\t\t\t\t});\n\t\t\t\t} else {\n\t\t\t\t\treturn item;\n\t\t\t\t}\n\t\t\t});\n\n\t\t});\n\t\treturn Promise.all(mapped);\n\t}\n\n\t/**\n\t * Put binary data from a url to storage\n\t * @param  {string} url  a url to request from storage\n\t * @param  {boolean} [withCredentials]\n\t * @param  {object} [headers]\n\t * @return {Promise<Blob>}\n\t */\n\tput(url, withCredentials, headers) {\n\t\tlet encodedUrl = window.encodeURIComponent(url);\n\n\t\treturn this.storage.getItem(encodedUrl).then((result) => {\n\t\t\tif (!result) {\n\t\t\t\treturn this.requester(url, \"binary\", withCredentials, headers).then((data) => {\n\t\t\t\t\treturn this.storage.setItem(encodedUrl, data);\n\t\t\t\t});\n\t\t\t}\n\t\t\treturn result;\n\t\t});\n\t}\n\n\t/**\n\t * Request a url\n\t * @param  {string} url  a url to request from storage\n\t * @param  {string} [type] specify the type of the returned result\n\t * @param  {boolean} [withCredentials]\n\t * @param  {object} [headers]\n\t * @return {Promise<Blob | string | JSON | Document | XMLDocument>}\n\t */\n\trequest(url, type, withCredentials, headers){\n\t\tif (this.online) {\n\t\t\t// From network\n\t\t\treturn this.requester(url, type, withCredentials, headers).then((data) => {\n\t\t\t\t// save to store if not present\n\t\t\t\tthis.put(url);\n\t\t\t\treturn data;\n\t\t\t})\n\t\t} else {\n\t\t\t// From store\n\t\t\treturn this.retrieve(url, type);\n\t\t}\n\n\t}\n\n\t/**\n\t * Request a url from storage\n\t * @param  {string} url  a url to request from storage\n\t * @param  {string} [type] specify the type of the returned result\n\t * @return {Promise<Blob | string | JSON | Document | XMLDocument>}\n\t */\n\tretrieve(url, type) {\n\t\tvar deferred = new defer();\n\t\tvar response;\n\t\tvar path = new Path(url);\n\n\t\t// If type isn't set, determine it from the file extension\n\t\tif(!type) {\n\t\t\ttype = path.extension;\n\t\t}\n\n\t\tif(type == \"blob\"){\n\t\t\tresponse = this.getBlob(url);\n\t\t} else {\n\t\t\tresponse = this.getText(url);\n\t\t}\n\n\n\t\treturn response.then((r) => {\n\t\t\tvar deferred = new defer();\n\t\t\tvar result;\n\t\t\tif (r) {\n\t\t\t\tresult = this.handleResponse(r, type);\n\t\t\t\tdeferred.resolve(result);\n\t\t\t} else {\n\t\t\t\tdeferred.reject({\n\t\t\t\t\tmessage : \"File not found in storage: \" + url,\n\t\t\t\t\tstack : new Error().stack\n\t\t\t\t});\n\t\t\t}\n\t\t\treturn deferred.promise;\n\t\t});\n\t}\n\n\t/**\n\t * Handle the response from request\n\t * @private\n\t * @param  {any} response\n\t * @param  {string} [type]\n\t * @return {any} the parsed result\n\t */\n\thandleResponse(response, type){\n\t\tvar r;\n\n\t\tif(type == \"json\") {\n\t\t\tr = JSON.parse(response);\n\t\t}\n\t\telse\n\t\tif(isXml(type)) {\n\t\t\tr = parse(response, \"text/xml\");\n\t\t}\n\t\telse\n\t\tif(type == \"xhtml\") {\n\t\t\tr = parse(response, \"application/xhtml+xml\");\n\t\t}\n\t\telse\n\t\tif(type == \"html\" || type == \"htm\") {\n\t\t\tr = parse(response, \"text/html\");\n\t\t } else {\n\t\t\t r = response;\n\t\t }\n\n\t\treturn r;\n\t}\n\n\t/**\n\t * Get a Blob from Storage by Url\n\t * @param  {string} url\n\t * @param  {string} [mimeType]\n\t * @return {Blob}\n\t */\n\tgetBlob(url, mimeType){\n\t\tlet encodedUrl = window.encodeURIComponent(url);\n\n\t\treturn this.storage.getItem(encodedUrl).then(function(uint8array) {\n\t\t\tif(!uint8array) return;\n\n\t\t\tmimeType = mimeType || mime.lookup(url);\n\n\t\t\treturn new Blob([uint8array], {type : mimeType});\n\t\t});\n\n\t}\n\n\t/**\n\t * Get Text from Storage by Url\n\t * @param  {string} url\n\t * @param  {string} [mimeType]\n\t * @return {string}\n\t */\n\tgetText(url, mimeType){\n\t\tlet encodedUrl = window.encodeURIComponent(url);\n\n\t\tmimeType = mimeType || mime.lookup(url);\n\n\t\treturn this.storage.getItem(encodedUrl).then(function(uint8array) {\n\t\t\tvar deferred = new defer();\n\t\t\tvar reader = new FileReader();\n\t\t\tvar blob;\n\n\t\t\tif(!uint8array) return;\n\n\t\t\tblob = new Blob([uint8array], {type : mimeType});\n\n\t\t\treader.addEventListener(\"loadend\", () => {\n\t\t\t\tdeferred.resolve(reader.result);\n\t\t\t});\n\n\t\t\treader.readAsText(blob, mimeType);\n\n\t\t\treturn deferred.promise;\n\t\t});\n\t}\n\n\t/**\n\t * Get a base64 encoded result from Storage by Url\n\t * @param  {string} url\n\t * @param  {string} [mimeType]\n\t * @return {string} base64 encoded\n\t */\n\tgetBase64(url, mimeType){\n\t\tlet encodedUrl = window.encodeURIComponent(url);\n\n\t\tmimeType = mimeType || mime.lookup(url);\n\n\t\treturn this.storage.getItem(encodedUrl).then((uint8array) => {\n\t\t\tvar deferred = new defer();\n\t\t\tvar reader = new FileReader();\n\t\t\tvar blob;\n\n\t\t\tif(!uint8array) return;\n\n\t\t\tblob = new Blob([uint8array], {type : mimeType});\n\n\t\t\treader.addEventListener(\"loadend\", () => {\n\t\t\t\tdeferred.resolve(reader.result);\n\t\t\t});\n\t\t\treader.readAsDataURL(blob, mimeType);\n\n\t\t\treturn deferred.promise;\n\t\t});\n\t}\n\n\t/**\n\t * Create a Url from a stored item\n\t * @param  {string} url\n\t * @param  {object} [options.base64] use base64 encoding or blob url\n\t * @return {Promise} url promise with Url string\n\t */\n\tcreateUrl(url, options){\n\t\tvar deferred = new defer();\n\t\tvar _URL = window.URL || window.webkitURL || window.mozURL;\n\t\tvar tempUrl;\n\t\tvar response;\n\t\tvar useBase64 = options && options.base64;\n\n\t\tif(url in this.urlCache) {\n\t\t\tdeferred.resolve(this.urlCache[url]);\n\t\t\treturn deferred.promise;\n\t\t}\n\n\t\tif (useBase64) {\n\t\t\tresponse = this.getBase64(url);\n\n\t\t\tif (response) {\n\t\t\t\tresponse.then(function(tempUrl) {\n\n\t\t\t\t\tthis.urlCache[url] = tempUrl;\n\t\t\t\t\tdeferred.resolve(tempUrl);\n\n\t\t\t\t}.bind(this));\n\n\t\t\t}\n\n\t\t} else {\n\n\t\t\tresponse = this.getBlob(url);\n\n\t\t\tif (response) {\n\t\t\t\tresponse.then(function(blob) {\n\n\t\t\t\t\ttempUrl = _URL.createObjectURL(blob);\n\t\t\t\t\tthis.urlCache[url] = tempUrl;\n\t\t\t\t\tdeferred.resolve(tempUrl);\n\n\t\t\t\t}.bind(this));\n\n\t\t\t}\n\t\t}\n\n\n\t\tif (!response) {\n\t\t\tdeferred.reject({\n\t\t\t\tmessage : \"File not found in storage: \" + url,\n\t\t\t\tstack : new Error().stack\n\t\t\t});\n\t\t}\n\n\t\treturn deferred.promise;\n\t}\n\n\t/**\n\t * Revoke Temp Url for a archive item\n\t * @param  {string} url url of the item in the store\n\t */\n\trevokeUrl(url){\n\t\tvar _URL = window.URL || window.webkitURL || window.mozURL;\n\t\tvar fromCache = this.urlCache[url];\n\t\tif(fromCache) _URL.revokeObjectURL(fromCache);\n\t}\n\n\tdestroy() {\n\t\tvar _URL = window.URL || window.webkitURL || window.mozURL;\n\t\tfor (let fromCache in this.urlCache) {\n\t\t\t_URL.revokeObjectURL(fromCache);\n\t\t}\n\t\tthis.urlCache = {};\n\t\tthis.removeListeners();\n\t}\n}\n\nEventEmitter(Store.prototype);\n\nexport default Store;\n","import {qs, qsa } from \"./utils/core\";\n\n/**\n * Open DisplayOptions Format Parser\n * @class\n * @param {document} displayOptionsDocument XML\n */\nclass DisplayOptions {\n\tconstructor(displayOptionsDocument) {\n\t\tthis.interactive = \"\";\n\t\tthis.fixedLayout = \"\";\n\t\tthis.openToSpread = \"\";\n\t\tthis.orientationLock = \"\";\n\n\t\tif (displayOptionsDocument) {\n\t\t\tthis.parse(displayOptionsDocument);\n\t\t}\n\t}\n\n\t/**\n\t * Parse XML\n\t * @param  {document} displayOptionsDocument XML\n\t * @return {DisplayOptions} self\n\t */\n\tparse(displayOptionsDocument) {\n\t\tif(!displayOptionsDocument) {\n\t\t\treturn this;\n\t\t}\n\n\t\tconst displayOptionsNode = qs(displayOptionsDocument, \"display_options\");\n\t\tif(!displayOptionsNode) {\n\t\t\treturn this;\n\t\t} \n\n\t\tconst options = qsa(displayOptionsNode, \"option\");\n\t\toptions.forEach((el) => {\n\t\t\tlet value = \"\";\n\n\t\t\tif (el.childNodes.length) {\n\t\t\t\tvalue = el.childNodes[0].nodeValue;\n\t\t\t}\n\n\t\t\tswitch (el.attributes.name.value) {\n\t\t\t    case \"interactive\":\n\t\t\t        this.interactive = value;\n\t\t\t        break;\n\t\t\t    case \"fixed-layout\":\n\t\t\t        this.fixedLayout = value;\n\t\t\t        break;\n\t\t\t    case \"open-to-spread\":\n\t\t\t        this.openToSpread = value;\n\t\t\t        break;\n\t\t\t    case \"orientation-lock\":\n\t\t\t        this.orientationLock = value;\n\t\t\t        break;\n\t\t\t}\n\t\t});\n\n\t\treturn this;\n\t}\n\n\tdestroy() {\n\t\tthis.interactive = undefined;\n\t\tthis.fixedLayout = undefined;\n\t\tthis.openToSpread = undefined;\n\t\tthis.orientationLock = undefined;\n\t}\n}\n\nexport default DisplayOptions;\n","import EventEmitter from \"event-emitter\";\nimport {extend, defer} from \"./utils/core\";\nimport Url from \"./utils/url\";\nimport Path from \"./utils/path\";\nimport Spine from \"./spine\";\nimport Locations from \"./locations\";\nimport Container from \"./container\";\nimport Packaging from \"./packaging\";\nimport Navigation from \"./navigation\";\nimport Resources from \"./resources\";\nimport PageList from \"./pagelist\";\nimport Rendition from \"./rendition\";\nimport Archive from \"./archive\";\nimport request from \"./utils/request\";\nimport EpubCFI from \"./epubcfi\";\nimport Store from \"./store\";\nimport DisplayOptions from \"./displayoptions\";\nimport { EPUBJS_VERSION, EVENTS } from \"./utils/constants\";\n\nconst CONTAINER_PATH = \"META-INF/container.xml\";\nconst IBOOKS_DISPLAY_OPTIONS_PATH = \"META-INF/com.apple.ibooks.display-options.xml\";\n\nconst INPUT_TYPE = {\n\tBINARY: \"binary\",\n\tBASE64: \"base64\",\n\tEPUB: \"epub\",\n\tOPF: \"opf\",\n\tMANIFEST: \"json\",\n\tDIRECTORY: \"directory\"\n};\n\n/**\n * An Epub representation with methods for the loading, parsing and manipulation\n * of its contents.\n * @class\n * @param {string} [url]\n * @param {object} [options]\n * @param {method} [options.requestMethod] a request function to use instead of the default\n * @param {boolean} [options.requestCredentials=undefined] send the xhr request withCredentials\n * @param {object} [options.requestHeaders=undefined] send the xhr request headers\n * @param {string} [options.encoding=binary] optional to pass 'binary' or base64' for archived Epubs\n * @param {string} [options.replacements=none] use base64, blobUrl, or none for replacing assets in archived Epubs\n * @param {method} [options.canonical] optional function to determine canonical urls for a path\n * @param {string} [options.openAs] optional string to determine the input type\n * @param {string} [options.store=false] cache the contents in local storage, value should be the name of the reader\n * @returns {Book}\n * @example new Book(\"/path/to/book.epub\", {})\n * @example new Book({ replacements: \"blobUrl\" })\n */\nclass Book {\n\tconstructor(url, options) {\n\t\t// Allow passing just options to the Book\n\t\tif (typeof(options) === \"undefined\" &&\n\t\t\t  typeof(url) !== \"string\" &&\n\t\t    url instanceof Blob === false &&\n\t\t    url instanceof ArrayBuffer === false) {\n\t\t\toptions = url;\n\t\t\turl = undefined;\n\t\t}\n\n\t\tthis.settings = extend(this.settings || {}, {\n\t\t\trequestMethod: undefined,\n\t\t\trequestCredentials: undefined,\n\t\t\trequestHeaders: undefined,\n\t\t\tencoding: undefined,\n\t\t\treplacements: undefined,\n\t\t\tcanonical: undefined,\n\t\t\topenAs: undefined,\n\t\t\tstore: undefined\n\t\t});\n\n\t\textend(this.settings, options);\n\n\n\t\t// Promises\n\t\tthis.opening = new defer();\n\t\t/**\n\t\t * @member {promise} opened returns after the book is loaded\n\t\t * @memberof Book\n\t\t */\n\t\tthis.opened = this.opening.promise;\n\t\tthis.isOpen = false;\n\n\t\tthis.loading = {\n\t\t\tmanifest: new defer(),\n\t\t\tspine: new defer(),\n\t\t\tmetadata: new defer(),\n\t\t\tcover: new defer(),\n\t\t\tnavigation: new defer(),\n\t\t\tpageList: new defer(),\n\t\t\tresources: new defer(),\n\t\t\tdisplayOptions: new defer()\n\t\t};\n\n\t\tthis.loaded = {\n\t\t\tmanifest: this.loading.manifest.promise,\n\t\t\tspine: this.loading.spine.promise,\n\t\t\tmetadata: this.loading.metadata.promise,\n\t\t\tcover: this.loading.cover.promise,\n\t\t\tnavigation: this.loading.navigation.promise,\n\t\t\tpageList: this.loading.pageList.promise,\n\t\t\tresources: this.loading.resources.promise,\n\t\t\tdisplayOptions: this.loading.displayOptions.promise\n\t\t};\n\n\t\t/**\n\t\t * @member {promise} ready returns after the book is loaded and parsed\n\t\t * @memberof Book\n\t\t * @private\n\t\t */\n\t\tthis.ready = Promise.all([\n\t\t\tthis.loaded.manifest,\n\t\t\tthis.loaded.spine,\n\t\t\tthis.loaded.metadata,\n\t\t\tthis.loaded.cover,\n\t\t\tthis.loaded.navigation,\n\t\t\tthis.loaded.resources,\n\t\t\tthis.loaded.displayOptions\n\t\t]);\n\n\n\t\t// Queue for methods used before opening\n\t\tthis.isRendered = false;\n\t\t// this._q = queue(this);\n\n\t\t/**\n\t\t * @member {method} request\n\t\t * @memberof Book\n\t\t * @private\n\t\t */\n\t\tthis.request = this.settings.requestMethod || request;\n\n\t\t/**\n\t\t * @member {Spine} spine\n\t\t * @memberof Book\n\t\t */\n\t\tthis.spine = new Spine();\n\n\t\t/**\n\t\t * @member {Locations} locations\n\t\t * @memberof Book\n\t\t */\n\t\tthis.locations = new Locations(this.spine, this.load.bind(this));\n\n\t\t/**\n\t\t * @member {Navigation} navigation\n\t\t * @memberof Book\n\t\t */\n\t\tthis.navigation = undefined;\n\n\t\t/**\n\t\t * @member {PageList} pagelist\n\t\t * @memberof Book\n\t\t */\n\t\tthis.pageList = undefined;\n\n\t\t/**\n\t\t * @member {Url} url\n\t\t * @memberof Book\n\t\t * @private\n\t\t */\n\t\tthis.url = undefined;\n\n\t\t/**\n\t\t * @member {Path} path\n\t\t * @memberof Book\n\t\t * @private\n\t\t */\n\t\tthis.path = undefined;\n\n\t\t/**\n\t\t * @member {boolean} archived\n\t\t * @memberof Book\n\t\t * @private\n\t\t */\n\t\tthis.archived = false;\n\n\t\t/**\n\t\t * @member {Archive} archive\n\t\t * @memberof Book\n\t\t * @private\n\t\t */\n\t\tthis.archive = undefined;\n\n\t\t/**\n\t\t * @member {Store} storage\n\t\t * @memberof Book\n\t\t * @private\n\t\t */\n\t\tthis.storage = undefined;\n\n\t\t/**\n\t\t * @member {Resources} resources\n\t\t * @memberof Book\n\t\t * @private\n\t\t */\n\t\tthis.resources = undefined;\n\n\t\t/**\n\t\t * @member {Rendition} rendition\n\t\t * @memberof Book\n\t\t * @private\n\t\t */\n\t\tthis.rendition = undefined;\n\n\t\t/**\n\t\t * @member {Container} container\n\t\t * @memberof Book\n\t\t * @private\n\t\t */\n\t\tthis.container = undefined;\n\n\t\t/**\n\t\t * @member {Packaging} packaging\n\t\t * @memberof Book\n\t\t * @private\n\t\t */\n\t\tthis.packaging = undefined;\n\n\t\t/**\n\t\t * @member {DisplayOptions} displayOptions\n\t\t * @memberof DisplayOptions\n\t\t * @private\n\t\t */\n\t\tthis.displayOptions = undefined;\n\n\t\t// this.toc = undefined;\n\t\tif (this.settings.store) {\n\t\t\tthis.store(this.settings.store);\n\t\t}\n\n\t\tif(url) {\n\t\t\tthis.open(url, this.settings.openAs).catch((error) => {\n\t\t\t\tvar err = new Error(\"Cannot load book at \"+ url );\n\t\t\t\tthis.emit(EVENTS.BOOK.OPEN_FAILED, err);\n\t\t\t});\n\t\t}\n\t}\n\n\t/**\n\t * Open a epub or url\n\t * @param {string | ArrayBuffer} input Url, Path or ArrayBuffer\n\t * @param {string} [what=\"binary\", \"base64\", \"epub\", \"opf\", \"json\", \"directory\"] force opening as a certain type\n\t * @returns {Promise} of when the book has been loaded\n\t * @example book.open(\"/path/to/book.epub\")\n\t */\n\topen(input, what) {\n\t\tvar opening;\n\t\tvar type = what || this.determineType(input);\n\n\t\tif (type === INPUT_TYPE.BINARY) {\n\t\t\tthis.archived = true;\n\t\t\tthis.url = new Url(\"/\", \"\");\n\t\t\topening = this.openEpub(input);\n\t\t} else if (type === INPUT_TYPE.BASE64) {\n\t\t\tthis.archived = true;\n\t\t\tthis.url = new Url(\"/\", \"\");\n\t\t\topening = this.openEpub(input, type);\n\t\t} else if (type === INPUT_TYPE.EPUB) {\n\t\t\tthis.archived = true;\n\t\t\tthis.url = new Url(\"/\", \"\");\n\t\t\topening = this.request(input, \"binary\", this.settings.requestCredentials, this.settings.requestHeaders)\n\t\t\t\t.then(this.openEpub.bind(this));\n\t\t} else if(type == INPUT_TYPE.OPF) {\n\t\t\tthis.url = new Url(input);\n\t\t\topening = this.openPackaging(this.url.Path.toString());\n\t\t} else if(type == INPUT_TYPE.MANIFEST) {\n\t\t\tthis.url = new Url(input);\n\t\t\topening = this.openManifest(this.url.Path.toString());\n\t\t} else {\n\t\t\tthis.url = new Url(input);\n\t\t\topening = this.openContainer(CONTAINER_PATH)\n\t\t\t\t.then(this.openPackaging.bind(this));\n\t\t}\n\n\t\treturn opening;\n\t}\n\n\t/**\n\t * Open an archived epub\n\t * @private\n\t * @param  {binary} data\n\t * @param  {string} [encoding]\n\t * @return {Promise}\n\t */\n\topenEpub(data, encoding) {\n\t\treturn this.unarchive(data, encoding || this.settings.encoding)\n\t\t\t.then(() => {\n\t\t\t\treturn this.openContainer(CONTAINER_PATH);\n\t\t\t})\n\t\t\t.then((packagePath) => {\n\t\t\t\treturn this.openPackaging(packagePath);\n\t\t\t});\n\t}\n\n\t/**\n\t * Open the epub container\n\t * @private\n\t * @param  {string} url\n\t * @return {string} packagePath\n\t */\n\topenContainer(url) {\n\t\treturn this.load(url)\n\t\t\t.then((xml) => {\n\t\t\t\tthis.container = new Container(xml);\n\t\t\t\treturn this.resolve(this.container.packagePath);\n\t\t\t});\n\t}\n\n\t/**\n\t * Open the Open Packaging Format Xml\n\t * @private\n\t * @param  {string} url\n\t * @return {Promise}\n\t */\n\topenPackaging(url) {\n\t\tthis.path = new Path(url);\n\t\treturn this.load(url)\n\t\t\t.then((xml) => {\n\t\t\t\tthis.packaging = new Packaging(xml);\n\t\t\t\treturn this.unpack(this.packaging);\n\t\t\t});\n\t}\n\n\t/**\n\t * Open the manifest JSON\n\t * @private\n\t * @param  {string} url\n\t * @return {Promise}\n\t */\n\topenManifest(url) {\n\t\tthis.path = new Path(url);\n\t\treturn this.load(url)\n\t\t\t.then((json) => {\n\t\t\t\tthis.packaging = new Packaging();\n\t\t\t\tthis.packaging.load(json);\n\t\t\t\treturn this.unpack(this.packaging);\n\t\t\t});\n\t}\n\n\t/**\n\t * Load a resource from the Book\n\t * @param  {string} path path to the resource to load\n\t * @return {Promise}     returns a promise with the requested resource\n\t */\n\tload(path) {\n\t\tvar resolved = this.resolve(path);\n\t\tif(this.archived) {\n\t\t\treturn this.archive.request(resolved);\n\t\t} else {\n\t\t\treturn this.request(resolved, null, this.settings.requestCredentials, this.settings.requestHeaders);\n\t\t}\n\t}\n\n\t/**\n\t * Resolve a path to it's absolute position in the Book\n\t * @param  {string} path\n\t * @param  {boolean} [absolute] force resolving the full URL\n\t * @return {string}          the resolved path string\n\t */\n\tresolve(path, absolute) {\n\t\tif (!path) {\n\t\t\treturn;\n\t\t}\n\t\tvar resolved = path;\n\t\tvar isAbsolute = (path.indexOf(\"://\") > -1);\n\n\t\tif (isAbsolute) {\n\t\t\treturn path;\n\t\t}\n\n\t\tif (this.path) {\n\t\t\tresolved = this.path.resolve(path);\n\t\t}\n\n\t\tif(absolute != false && this.url) {\n\t\t\tresolved = this.url.resolve(resolved);\n\t\t}\n\n\t\treturn resolved;\n\t}\n\n\t/**\n\t * Get a canonical link to a path\n\t * @param  {string} path\n\t * @return {string} the canonical path string\n\t */\n\tcanonical(path) {\n\t\tvar url = path;\n\n\t\tif (!path) {\n\t\t\treturn \"\";\n\t\t}\n\n\t\tif (this.settings.canonical) {\n\t\t\turl = this.settings.canonical(path);\n\t\t} else {\n\t\t\turl = this.resolve(path, true);\n\t\t}\n\n\t\treturn url;\n\t}\n\n\t/**\n\t * Determine the type of they input passed to open\n\t * @private\n\t * @param  {string} input\n\t * @return {string}  binary | directory | epub | opf\n\t */\n\tdetermineType(input) {\n\t\tvar url;\n\t\tvar path;\n\t\tvar extension;\n\n\t\tif (this.settings.encoding === \"base64\") {\n\t\t\treturn INPUT_TYPE.BASE64;\n\t\t}\n\n\t\tif(typeof(input) != \"string\") {\n\t\t\treturn INPUT_TYPE.BINARY;\n\t\t}\n\n\t\turl = new Url(input);\n\t\tpath = url.path();\n\t\textension = path.extension;\n\n\t\t// If there's a search string, remove it before determining type\n\t\tif (extension) {\n\t\t\textension = extension.replace(/\\?.*$/, \"\");\n\t\t}\n\n\t\tif (!extension) {\n\t\t\treturn INPUT_TYPE.DIRECTORY;\n\t\t}\n\n\t\tif(extension === \"epub\"){\n\t\t\treturn INPUT_TYPE.EPUB;\n\t\t}\n\n\t\tif(extension === \"opf\"){\n\t\t\treturn INPUT_TYPE.OPF;\n\t\t}\n\n\t\tif(extension === \"json\"){\n\t\t\treturn INPUT_TYPE.MANIFEST;\n\t\t}\n\t}\n\n\n\t/**\n\t * unpack the contents of the Books packaging\n\t * @private\n\t * @param {Packaging} packaging object\n\t */\n\tunpack(packaging) {\n\t\tthis.package = packaging; //TODO: deprecated this\n\n\t\tif (this.packaging.metadata.layout === \"\") {\n\t\t\t// rendition:layout not set - check display options if book is pre-paginated\n\t\t\tthis.load(this.url.resolve(IBOOKS_DISPLAY_OPTIONS_PATH)).then((xml) => {\n\t\t\t\tthis.displayOptions = new DisplayOptions(xml);\n\t\t\t\tthis.loading.displayOptions.resolve(this.displayOptions);\n\t\t\t}).catch((err) => {\n\t\t\t\tthis.displayOptions = new DisplayOptions();\n\t\t\t\tthis.loading.displayOptions.resolve(this.displayOptions);\n\t\t\t});\n\t\t} else {\n\t\t\tthis.displayOptions = new DisplayOptions();\n\t\t\tthis.loading.displayOptions.resolve(this.displayOptions);\n\t\t}\n\n\t\tthis.spine.unpack(this.packaging, this.resolve.bind(this), this.canonical.bind(this));\n\n\t\tthis.resources = new Resources(this.packaging.manifest, {\n\t\t\tarchive: this.archive,\n\t\t\tresolver: this.resolve.bind(this),\n\t\t\trequest: this.request.bind(this),\n\t\t\treplacements: this.settings.replacements || (this.archived ? \"blobUrl\" : \"base64\")\n\t\t});\n\n\t\tthis.loadNavigation(this.packaging).then(() => {\n\t\t\t// this.toc = this.navigation.toc;\n\t\t\tthis.loading.navigation.resolve(this.navigation);\n\t\t});\n\n\t\tif (this.packaging.coverPath) {\n\t\t\tthis.cover = this.resolve(this.packaging.coverPath);\n\t\t}\n\t\t// Resolve promises\n\t\tthis.loading.manifest.resolve(this.packaging.manifest);\n\t\tthis.loading.metadata.resolve(this.packaging.metadata);\n\t\tthis.loading.spine.resolve(this.spine);\n\t\tthis.loading.cover.resolve(this.cover);\n\t\tthis.loading.resources.resolve(this.resources);\n\t\tthis.loading.pageList.resolve(this.pageList);\n\n\t\tthis.isOpen = true;\n\n\t\tif(this.archived || this.settings.replacements && this.settings.replacements != \"none\") {\n\t\t\tthis.replacements().then(() => {\n\t\t\t\tthis.loaded.displayOptions.then(() => {\n\t\t\t\t\tthis.opening.resolve(this);\n\t\t\t\t});\n\t\t\t})\n\t\t\t.catch((err) => {\n\t\t\t\tconsole.error(err);\n\t\t\t});\n\t\t} else {\n\t\t\t// Resolve book opened promise\n\t\t\tthis.loaded.displayOptions.then(() => {\n\t\t\t\tthis.opening.resolve(this);\n\t\t\t});\n\t\t}\n\n\t}\n\n\t/**\n\t * Load Navigation and PageList from package\n\t * @private\n\t * @param {Packaging} packaging\n\t */\n\tloadNavigation(packaging) {\n\t\tlet navPath = packaging.navPath || packaging.ncxPath;\n\t\tlet toc = packaging.toc;\n\n\t\t// From json manifest\n\t\tif (toc) {\n\t\t\treturn new Promise((resolve, reject) => {\n\t\t\t\tthis.navigation = new Navigation(toc);\n\n\t\t\t\tif (packaging.pageList) {\n\t\t\t\t\tthis.pageList = new PageList(packaging.pageList); // TODO: handle page lists from Manifest\n\t\t\t\t}\n\n\t\t\t\tresolve(this.navigation);\n\t\t\t});\n\t\t}\n\n\t\tif (!navPath) {\n\t\t\treturn new Promise((resolve, reject) => {\n\t\t\t\tthis.navigation = new Navigation();\n\t\t\t\tthis.pageList = new PageList();\n\n\t\t\t\tresolve(this.navigation);\n\t\t\t});\n\t\t}\n\n\t\treturn this.load(navPath, \"xml\")\n\t\t\t.then((xml) => {\n\t\t\t\tthis.navigation = new Navigation(xml);\n\t\t\t\tthis.pageList = new PageList(xml);\n\t\t\t\treturn this.navigation;\n\t\t\t});\n\t}\n\n\t/**\n\t * Gets a Section of the Book from the Spine\n\t * Alias for `book.spine.get`\n\t * @param {string} target\n\t * @return {Section}\n\t */\n\tsection(target) {\n\t\treturn this.spine.get(target);\n\t}\n\n\t/**\n\t * Sugar to render a book to an element\n\t * @param  {element | string} element element or string to add a rendition to\n\t * @param  {object} [options]\n\t * @return {Rendition}\n\t */\n\trenderTo(element, options) {\n\t\tthis.rendition = new Rendition(this, options);\n\t\tthis.rendition.attachTo(element);\n\n\t\treturn this.rendition;\n\t}\n\n\t/**\n\t * Set if request should use withCredentials\n\t * @param {boolean} credentials\n\t */\n\tsetRequestCredentials(credentials) {\n\t\tthis.settings.requestCredentials = credentials;\n\t}\n\n\t/**\n\t * Set headers request should use\n\t * @param {object} headers\n\t */\n\tsetRequestHeaders(headers) {\n\t\tthis.settings.requestHeaders = headers;\n\t}\n\n\t/**\n\t * Unarchive a zipped epub\n\t * @private\n\t * @param  {binary} input epub data\n\t * @param  {string} [encoding]\n\t * @return {Archive}\n\t */\n\tunarchive(input, encoding) {\n\t\tthis.archive = new Archive();\n\t\treturn this.archive.open(input, encoding);\n\t}\n\n\t/**\n\t * Store the epubs contents\n\t * @private\n\t * @param  {binary} input epub data\n\t * @param  {string} [encoding]\n\t * @return {Store}\n\t */\n\tstore(name) {\n\t\t// Use \"blobUrl\" or \"base64\" for replacements\n\t\tlet replacementsSetting = this.settings.replacements && this.settings.replacements !== \"none\";\n\t\t// Save original url\n\t\tlet originalUrl = this.url;\n\t\t// Save original request method\n\t\tlet requester = this.settings.requestMethod || request.bind(this);\n\t\t// Create new Store\n\t\tthis.storage = new Store(name, requester, this.resolve.bind(this));\n\t\t// Replace request method to go through store\n\t\tthis.request = this.storage.request.bind(this.storage);\n\n\t\tthis.opened.then(() => {\n\t\t\tif (this.archived) {\n\t\t\t\tthis.storage.requester = this.archive.request.bind(this.archive);\n\t\t\t}\n\t\t\t// Substitute hook\n\t\t\tlet substituteResources = (output, section) => {\n\t\t\t\tsection.output = this.resources.substitute(output, section.url);\n\t\t\t};\n\n\t\t\t// Set to use replacements\n\t\t\tthis.resources.settings.replacements = replacementsSetting || \"blobUrl\";\n\t\t\t// Create replacement urls\n\t\t\tthis.resources.replacements().\n\t\t\t\tthen(() => {\n\t\t\t\t\treturn this.resources.replaceCss();\n\t\t\t\t});\n\n\t\t\tthis.storage.on(\"offline\", () => {\n\t\t\t\t// Remove url to use relative resolving for hrefs\n\t\t\t\tthis.url = new Url(\"/\", \"\");\n\t\t\t\t// Add hook to replace resources in contents\n\t\t\t\tthis.spine.hooks.serialize.register(substituteResources);\n\t\t\t});\n\n\t\t\tthis.storage.on(\"online\", () => {\n\t\t\t\t// Restore original url\n\t\t\t\tthis.url = originalUrl;\n\t\t\t\t// Remove hook\n\t\t\t\tthis.spine.hooks.serialize.deregister(substituteResources);\n\t\t\t});\n\n\t\t});\n\n\t\treturn this.storage;\n\t}\n\n\t/**\n\t * Get the cover url\n\t * @return {Promise<?string>} coverUrl\n\t */\n\tcoverUrl() {\n\t\treturn this.loaded.cover.then(() => {\n\t\t\tif (!this.cover) {\n\t\t\t\treturn null;\n\t\t\t}\n\n\t\t\tif (this.archived) {\n\t\t\t\treturn this.archive.createUrl(this.cover);\n\t\t\t} else {\n\t\t\t\treturn this.cover;\n\t\t\t}\n\t\t});\n\t}\n\n\t/**\n\t * Load replacement urls\n\t * @private\n\t * @return {Promise} completed loading urls\n\t */\n\treplacements() {\n\t\tthis.spine.hooks.serialize.register((output, section) => {\n\t\t\tsection.output = this.resources.substitute(output, section.url);\n\t\t});\n\n\t\treturn this.resources.replacements().\n\t\t\tthen(() => {\n\t\t\t\treturn this.resources.replaceCss();\n\t\t\t});\n\t}\n\n\t/**\n\t * Find a DOM Range for a given CFI Range\n\t * @param  {EpubCFI} cfiRange a epub cfi range\n\t * @return {Promise}\n\t */\n\tgetRange(cfiRange) {\n\t\tvar cfi = new EpubCFI(cfiRange);\n\t\tvar item = this.spine.get(cfi.spinePos);\n\t\tvar _request = this.load.bind(this);\n\t\tif (!item) {\n\t\t\treturn new Promise((resolve, reject) => {\n\t\t\t\treject(\"CFI could not be found\");\n\t\t\t});\n\t\t}\n\t\treturn item.load(_request).then(function (contents) {\n\t\t\tvar range = cfi.toRange(item.document);\n\t\t\treturn range;\n\t\t});\n\t}\n\n\t/**\n\t * Generates the Book Key using the identifier in the manifest or other string provided\n\t * @param  {string} [identifier] to use instead of metadata identifier\n\t * @return {string} key\n\t */\n\tkey(identifier) {\n\t\tvar ident = identifier || this.packaging.metadata.identifier || this.url.filename;\n\t\treturn `epubjs:${EPUBJS_VERSION}:${ident}`;\n\t}\n\n\t/**\n\t * Destroy the Book and all associated objects\n\t */\n\tdestroy() {\n\t\tthis.opened = undefined;\n\t\tthis.loading = undefined;\n\t\tthis.loaded = undefined;\n\t\tthis.ready = undefined;\n\n\t\tthis.isOpen = false;\n\t\tthis.isRendered = false;\n\n\t\tthis.spine && this.spine.destroy();\n\t\tthis.locations && this.locations.destroy();\n\t\tthis.pageList && this.pageList.destroy();\n\t\tthis.archive && this.archive.destroy();\n\t\tthis.resources && this.resources.destroy();\n\t\tthis.container && this.container.destroy();\n\t\tthis.packaging && this.packaging.destroy();\n\t\tthis.rendition && this.rendition.destroy();\n\t\tthis.displayOptions && this.displayOptions.destroy();\n\n\t\tthis.spine = undefined;\n\t\tthis.locations = undefined;\n\t\tthis.pageList = undefined;\n\t\tthis.archive = undefined;\n\t\tthis.resources = undefined;\n\t\tthis.container = undefined;\n\t\tthis.packaging = undefined;\n\t\tthis.rendition = undefined;\n\n\t\tthis.navigation = undefined;\n\t\tthis.url = undefined;\n\t\tthis.path = undefined;\n\t\tthis.archived = false;\n\t}\n\n}\n\n//-- Enable binding events to book\nEventEmitter(Book.prototype);\n\nexport default Book;\n","'use strict';\n\nObject.defineProperty(exports, \"__esModule\", {\n    value: true\n});\nexports.Underline = exports.Highlight = exports.Mark = exports.Pane = undefined;\n\nvar _get = function get(object, property, receiver) { if (object === null) object = Function.prototype; var desc = Object.getOwnPropertyDescriptor(object, property); if (desc === undefined) { var parent = Object.getPrototypeOf(object); if (parent === null) { return undefined; } else { return get(parent, property, receiver); } } else if (\"value\" in desc) { return desc.value; } else { var getter = desc.get; if (getter === undefined) { return undefined; } return getter.call(receiver); } };\n\nvar _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();\n\nvar _svg = require('./svg');\n\nvar _svg2 = _interopRequireDefault(_svg);\n\nvar _events = require('./events');\n\nvar _events2 = _interopRequireDefault(_events);\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nfunction _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError(\"this hasn't been initialised - super() hasn't been called\"); } return call && (typeof call === \"object\" || typeof call === \"function\") ? call : self; }\n\nfunction _inherits(subClass, superClass) { if (typeof superClass !== \"function\" && superClass !== null) { throw new TypeError(\"Super expression must either be null or a function, not \" + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; }\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\nvar Pane = exports.Pane = function () {\n    function Pane(target) {\n        var container = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : document.body;\n\n        _classCallCheck(this, Pane);\n\n        this.target = target;\n        this.element = _svg2.default.createElement('svg');\n        this.marks = [];\n\n        // Match the coordinates of the target element\n        this.element.style.position = 'absolute';\n        // Disable pointer events\n        this.element.setAttribute('pointer-events', 'none');\n\n        // Set up mouse event proxying between the target element and the marks\n        _events2.default.proxyMouse(this.target, this.marks);\n\n        this.container = container;\n        this.container.appendChild(this.element);\n\n        this.render();\n    }\n\n    _createClass(Pane, [{\n        key: 'addMark',\n        value: function addMark(mark) {\n            var g = _svg2.default.createElement('g');\n            this.element.appendChild(g);\n            mark.bind(g, this.container);\n\n            this.marks.push(mark);\n\n            mark.render();\n            return mark;\n        }\n    }, {\n        key: 'removeMark',\n        value: function removeMark(mark) {\n            var idx = this.marks.indexOf(mark);\n            if (idx === -1) {\n                return;\n            }\n            var el = mark.unbind();\n            this.element.removeChild(el);\n            this.marks.splice(idx, 1);\n        }\n    }, {\n        key: 'render',\n        value: function render() {\n            setCoords(this.element, coords(this.target, this.container));\n            var _iteratorNormalCompletion = true;\n            var _didIteratorError = false;\n            var _iteratorError = undefined;\n\n            try {\n                for (var _iterator = this.marks[Symbol.iterator](), _step; !(_iteratorNormalCompletion = (_step = _iterator.next()).done); _iteratorNormalCompletion = true) {\n                    var m = _step.value;\n\n                    m.render();\n                }\n            } catch (err) {\n                _didIteratorError = true;\n                _iteratorError = err;\n            } finally {\n                try {\n                    if (!_iteratorNormalCompletion && _iterator.return) {\n                        _iterator.return();\n                    }\n                } finally {\n                    if (_didIteratorError) {\n                        throw _iteratorError;\n                    }\n                }\n            }\n        }\n    }]);\n\n    return Pane;\n}();\n\nvar Mark = exports.Mark = function () {\n    function Mark() {\n        _classCallCheck(this, Mark);\n\n        this.element = null;\n    }\n\n    _createClass(Mark, [{\n        key: 'bind',\n        value: function bind(element, container) {\n            this.element = element;\n            this.container = container;\n        }\n    }, {\n        key: 'unbind',\n        value: function unbind() {\n            var el = this.element;\n            this.element = null;\n            return el;\n        }\n    }, {\n        key: 'render',\n        value: function render() {}\n    }, {\n        key: 'dispatchEvent',\n        value: function dispatchEvent(e) {\n            if (!this.element) return;\n            this.element.dispatchEvent(e);\n        }\n    }, {\n        key: 'getBoundingClientRect',\n        value: function getBoundingClientRect() {\n            return this.element.getBoundingClientRect();\n        }\n    }, {\n        key: 'getClientRects',\n        value: function getClientRects() {\n            var rects = [];\n            var el = this.element.firstChild;\n            while (el) {\n                rects.push(el.getBoundingClientRect());\n                el = el.nextSibling;\n            }\n            return rects;\n        }\n    }, {\n        key: 'filteredRanges',\n        value: function filteredRanges() {\n            var rects = Array.from(this.range.getClientRects());\n\n            // De-duplicate the boxes\n            return rects.filter(function (box) {\n                for (var i = 0; i < rects.length; i++) {\n                    if (rects[i] === box) {\n                        return true;\n                    }\n                    var contained = contains(rects[i], box);\n                    if (contained) {\n                        return false;\n                    }\n                }\n                return true;\n            });\n        }\n    }]);\n\n    return Mark;\n}();\n\nvar Highlight = exports.Highlight = function (_Mark) {\n    _inherits(Highlight, _Mark);\n\n    function Highlight(range, className, data, attributes) {\n        _classCallCheck(this, Highlight);\n\n        var _this = _possibleConstructorReturn(this, (Highlight.__proto__ || Object.getPrototypeOf(Highlight)).call(this));\n\n        _this.range = range;\n        _this.className = className;\n        _this.data = data || {};\n        _this.attributes = attributes || {};\n        return _this;\n    }\n\n    _createClass(Highlight, [{\n        key: 'bind',\n        value: function bind(element, container) {\n            _get(Highlight.prototype.__proto__ || Object.getPrototypeOf(Highlight.prototype), 'bind', this).call(this, element, container);\n\n            for (var attr in this.data) {\n                if (this.data.hasOwnProperty(attr)) {\n                    this.element.dataset[attr] = this.data[attr];\n                }\n            }\n\n            for (var attr in this.attributes) {\n                if (this.attributes.hasOwnProperty(attr)) {\n                    this.element.setAttribute(attr, this.attributes[attr]);\n                }\n            }\n\n            if (this.className) {\n                this.element.classList.add(this.className);\n            }\n        }\n    }, {\n        key: 'render',\n        value: function render() {\n            // Empty element\n            while (this.element.firstChild) {\n                this.element.removeChild(this.element.firstChild);\n            }\n\n            var docFrag = this.element.ownerDocument.createDocumentFragment();\n            var filtered = this.filteredRanges();\n            var offset = this.element.getBoundingClientRect();\n            var container = this.container.getBoundingClientRect();\n\n            for (var i = 0, len = filtered.length; i < len; i++) {\n                var r = filtered[i];\n                var el = _svg2.default.createElement('rect');\n                el.setAttribute('x', r.left - offset.left + container.left);\n                el.setAttribute('y', r.top - offset.top + container.top);\n                el.setAttribute('height', r.height);\n                el.setAttribute('width', r.width);\n                docFrag.appendChild(el);\n            }\n\n            this.element.appendChild(docFrag);\n        }\n    }]);\n\n    return Highlight;\n}(Mark);\n\nvar Underline = exports.Underline = function (_Highlight) {\n    _inherits(Underline, _Highlight);\n\n    function Underline(range, className, data, attributes) {\n        _classCallCheck(this, Underline);\n\n        return _possibleConstructorReturn(this, (Underline.__proto__ || Object.getPrototypeOf(Underline)).call(this, range, className, data, attributes));\n    }\n\n    _createClass(Underline, [{\n        key: 'render',\n        value: function render() {\n            // Empty element\n            while (this.element.firstChild) {\n                this.element.removeChild(this.element.firstChild);\n            }\n\n            var docFrag = this.element.ownerDocument.createDocumentFragment();\n            var filtered = this.filteredRanges();\n            var offset = this.element.getBoundingClientRect();\n            var container = this.container.getBoundingClientRect();\n\n            for (var i = 0, len = filtered.length; i < len; i++) {\n                var r = filtered[i];\n\n                var rect = _svg2.default.createElement('rect');\n                rect.setAttribute('x', r.left - offset.left + container.left);\n                rect.setAttribute('y', r.top - offset.top + container.top);\n                rect.setAttribute('height', r.height);\n                rect.setAttribute('width', r.width);\n                rect.setAttribute('fill', 'none');\n\n                var line = _svg2.default.createElement('line');\n                line.setAttribute('x1', r.left - offset.left + container.left);\n                line.setAttribute('x2', r.left - offset.left + container.left + r.width);\n                line.setAttribute('y1', r.top - offset.top + container.top + r.height - 1);\n                line.setAttribute('y2', r.top - offset.top + container.top + r.height - 1);\n\n                line.setAttribute('stroke-width', 1);\n                line.setAttribute('stroke', 'black'); //TODO: match text color?\n                line.setAttribute('stroke-linecap', 'square');\n\n                docFrag.appendChild(rect);\n\n                docFrag.appendChild(line);\n            }\n\n            this.element.appendChild(docFrag);\n        }\n    }]);\n\n    return Underline;\n}(Highlight);\n\nfunction coords(el, container) {\n    var offset = container.getBoundingClientRect();\n    var rect = el.getBoundingClientRect();\n\n    return {\n        top: rect.top - offset.top,\n        left: rect.left - offset.left,\n        height: el.scrollHeight,\n        width: el.scrollWidth\n    };\n}\n\nfunction setCoords(el, coords) {\n    el.style.setProperty('top', coords.top + 'px', 'important');\n    el.style.setProperty('left', coords.left + 'px', 'important');\n    el.style.setProperty('height', coords.height + 'px', 'important');\n    el.style.setProperty('width', coords.width + 'px', 'important');\n}\n\nfunction contains(rect1, rect2) {\n    return rect2.right <= rect1.right && rect2.left >= rect1.left && rect2.top >= rect1.top && rect2.bottom <= rect1.bottom;\n}\n","var isObject = require('./isObject'),\n    now = require('./now'),\n    toNumber = require('./toNumber');\n\n/** Error message constants. */\nvar FUNC_ERROR_TEXT = 'Expected a function';\n\n/* Built-in method references for those with the same name as other `lodash` methods. */\nvar nativeMax = Math.max,\n    nativeMin = Math.min;\n\n/**\n * Creates a debounced function that delays invoking `func` until after `wait`\n * milliseconds have elapsed since the last time the debounced function was\n * invoked. The debounced function comes with a `cancel` method to cancel\n * delayed `func` invocations and a `flush` method to immediately invoke them.\n * Provide `options` to indicate whether `func` should be invoked on the\n * leading and/or trailing edge of the `wait` timeout. The `func` is invoked\n * with the last arguments provided to the debounced function. Subsequent\n * calls to the debounced function return the result of the last `func`\n * invocation.\n *\n * **Note:** If `leading` and `trailing` options are `true`, `func` is\n * invoked on the trailing edge of the timeout only if the debounced function\n * is invoked more than once during the `wait` timeout.\n *\n * If `wait` is `0` and `leading` is `false`, `func` invocation is deferred\n * until to the next tick, similar to `setTimeout` with a timeout of `0`.\n *\n * See [David Corbacho's article](https://css-tricks.com/debouncing-throttling-explained-examples/)\n * for details over the differences between `_.debounce` and `_.throttle`.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Function\n * @param {Function} func The function to debounce.\n * @param {number} [wait=0] The number of milliseconds to delay.\n * @param {Object} [options={}] The options object.\n * @param {boolean} [options.leading=false]\n *  Specify invoking on the leading edge of the timeout.\n * @param {number} [options.maxWait]\n *  The maximum time `func` is allowed to be delayed before it's invoked.\n * @param {boolean} [options.trailing=true]\n *  Specify invoking on the trailing edge of the timeout.\n * @returns {Function} Returns the new debounced function.\n * @example\n *\n * // Avoid costly calculations while the window size is in flux.\n * jQuery(window).on('resize', _.debounce(calculateLayout, 150));\n *\n * // Invoke `sendMail` when clicked, debouncing subsequent calls.\n * jQuery(element).on('click', _.debounce(sendMail, 300, {\n *   'leading': true,\n *   'trailing': false\n * }));\n *\n * // Ensure `batchLog` is invoked once after 1 second of debounced calls.\n * var debounced = _.debounce(batchLog, 250, { 'maxWait': 1000 });\n * var source = new EventSource('/stream');\n * jQuery(source).on('message', debounced);\n *\n * // Cancel the trailing debounced invocation.\n * jQuery(window).on('popstate', debounced.cancel);\n */\nfunction debounce(func, wait, options) {\n  var lastArgs,\n      lastThis,\n      maxWait,\n      result,\n      timerId,\n      lastCallTime,\n      lastInvokeTime = 0,\n      leading = false,\n      maxing = false,\n      trailing = true;\n\n  if (typeof func != 'function') {\n    throw new TypeError(FUNC_ERROR_TEXT);\n  }\n  wait = toNumber(wait) || 0;\n  if (isObject(options)) {\n    leading = !!options.leading;\n    maxing = 'maxWait' in options;\n    maxWait = maxing ? nativeMax(toNumber(options.maxWait) || 0, wait) : maxWait;\n    trailing = 'trailing' in options ? !!options.trailing : trailing;\n  }\n\n  function invokeFunc(time) {\n    var args = lastArgs,\n        thisArg = lastThis;\n\n    lastArgs = lastThis = undefined;\n    lastInvokeTime = time;\n    result = func.apply(thisArg, args);\n    return result;\n  }\n\n  function leadingEdge(time) {\n    // Reset any `maxWait` timer.\n    lastInvokeTime = time;\n    // Start the timer for the trailing edge.\n    timerId = setTimeout(timerExpired, wait);\n    // Invoke the leading edge.\n    return leading ? invokeFunc(time) : result;\n  }\n\n  function remainingWait(time) {\n    var timeSinceLastCall = time - lastCallTime,\n        timeSinceLastInvoke = time - lastInvokeTime,\n        timeWaiting = wait - timeSinceLastCall;\n\n    return maxing\n      ? nativeMin(timeWaiting, maxWait - timeSinceLastInvoke)\n      : timeWaiting;\n  }\n\n  function shouldInvoke(time) {\n    var timeSinceLastCall = time - lastCallTime,\n        timeSinceLastInvoke = time - lastInvokeTime;\n\n    // Either this is the first call, activity has stopped and we're at the\n    // trailing edge, the system time has gone backwards and we're treating\n    // it as the trailing edge, or we've hit the `maxWait` limit.\n    return (lastCallTime === undefined || (timeSinceLastCall >= wait) ||\n      (timeSinceLastCall < 0) || (maxing && timeSinceLastInvoke >= maxWait));\n  }\n\n  function timerExpired() {\n    var time = now();\n    if (shouldInvoke(time)) {\n      return trailingEdge(time);\n    }\n    // Restart the timer.\n    timerId = setTimeout(timerExpired, remainingWait(time));\n  }\n\n  function trailingEdge(time) {\n    timerId = undefined;\n\n    // Only invoke if we have `lastArgs` which means `func` has been\n    // debounced at least once.\n    if (trailing && lastArgs) {\n      return invokeFunc(time);\n    }\n    lastArgs = lastThis = undefined;\n    return result;\n  }\n\n  function cancel() {\n    if (timerId !== undefined) {\n      clearTimeout(timerId);\n    }\n    lastInvokeTime = 0;\n    lastArgs = lastCallTime = lastThis = timerId = undefined;\n  }\n\n  function flush() {\n    return timerId === undefined ? result : trailingEdge(now());\n  }\n\n  function debounced() {\n    var time = now(),\n        isInvoking = shouldInvoke(time);\n\n    lastArgs = arguments;\n    lastThis = this;\n    lastCallTime = time;\n\n    if (isInvoking) {\n      if (timerId === undefined) {\n        return leadingEdge(lastCallTime);\n      }\n      if (maxing) {\n        // Handle invocations in a tight loop.\n        clearTimeout(timerId);\n        timerId = setTimeout(timerExpired, wait);\n        return invokeFunc(lastCallTime);\n      }\n    }\n    if (timerId === undefined) {\n      timerId = setTimeout(timerExpired, wait);\n    }\n    return result;\n  }\n  debounced.cancel = cancel;\n  debounced.flush = flush;\n  return debounced;\n}\n\nmodule.exports = debounce;\n","var conventions = require(\"./conventions\");\nvar dom = require('./dom')\nvar entities = require('./entities');\nvar sax = require('./sax');\n\nvar DOMImplementation = dom.DOMImplementation;\n\nvar NAMESPACE = conventions.NAMESPACE;\n\nvar ParseError = sax.ParseError;\nvar XMLReader = sax.XMLReader;\n\nfunction DOMParser(options){\n\tthis.options = options ||{locator:{}};\n}\n\nDOMParser.prototype.parseFromString = function(source,mimeType){\n\tvar options = this.options;\n\tvar sax =  new XMLReader();\n\tvar domBuilder = options.domBuilder || new DOMHandler();//contentHandler and LexicalHandler\n\tvar errorHandler = options.errorHandler;\n\tvar locator = options.locator;\n\tvar defaultNSMap = options.xmlns||{};\n\tvar isHTML = /\\/x?html?$/.test(mimeType);//mimeType.toLowerCase().indexOf('html') > -1;\n  \tvar entityMap = isHTML ? entities.HTML_ENTITIES : entities.XML_ENTITIES;\n\tif(locator){\n\t\tdomBuilder.setDocumentLocator(locator)\n\t}\n\n\tsax.errorHandler = buildErrorHandler(errorHandler,domBuilder,locator);\n\tsax.domBuilder = options.domBuilder || domBuilder;\n\tif(isHTML){\n\t\tdefaultNSMap[''] = NAMESPACE.HTML;\n\t}\n\tdefaultNSMap.xml = defaultNSMap.xml || NAMESPACE.XML;\n\tif(source && typeof source === 'string'){\n\t\tsax.parse(source,defaultNSMap,entityMap);\n\t}else{\n\t\tsax.errorHandler.error(\"invalid doc source\");\n\t}\n\treturn domBuilder.doc;\n}\nfunction buildErrorHandler(errorImpl,domBuilder,locator){\n\tif(!errorImpl){\n\t\tif(domBuilder instanceof DOMHandler){\n\t\t\treturn domBuilder;\n\t\t}\n\t\terrorImpl = domBuilder ;\n\t}\n\tvar errorHandler = {}\n\tvar isCallback = errorImpl instanceof Function;\n\tlocator = locator||{}\n\tfunction build(key){\n\t\tvar fn = errorImpl[key];\n\t\tif(!fn && isCallback){\n\t\t\tfn = errorImpl.length == 2?function(msg){errorImpl(key,msg)}:errorImpl;\n\t\t}\n\t\terrorHandler[key] = fn && function(msg){\n\t\t\tfn('[xmldom '+key+']\\t'+msg+_locator(locator));\n\t\t}||function(){};\n\t}\n\tbuild('warning');\n\tbuild('error');\n\tbuild('fatalError');\n\treturn errorHandler;\n}\n\n//console.log('#\\n\\n\\n\\n\\n\\n\\n####')\n/**\n * +ContentHandler+ErrorHandler\n * +LexicalHandler+EntityResolver2\n * -DeclHandler-DTDHandler\n *\n * DefaultHandler:EntityResolver, DTDHandler, ContentHandler, ErrorHandler\n * DefaultHandler2:DefaultHandler,LexicalHandler, DeclHandler, EntityResolver2\n * @link http://www.saxproject.org/apidoc/org/xml/sax/helpers/DefaultHandler.html\n */\nfunction DOMHandler() {\n    this.cdata = false;\n}\nfunction position(locator,node){\n\tnode.lineNumber = locator.lineNumber;\n\tnode.columnNumber = locator.columnNumber;\n}\n/**\n * @see org.xml.sax.ContentHandler#startDocument\n * @link http://www.saxproject.org/apidoc/org/xml/sax/ContentHandler.html\n */\nDOMHandler.prototype = {\n\tstartDocument : function() {\n    \tthis.doc = new DOMImplementation().createDocument(null, null, null);\n    \tif (this.locator) {\n        \tthis.doc.documentURI = this.locator.systemId;\n    \t}\n\t},\n\tstartElement:function(namespaceURI, localName, qName, attrs) {\n\t\tvar doc = this.doc;\n\t    var el = doc.createElementNS(namespaceURI, qName||localName);\n\t    var len = attrs.length;\n\t    appendElement(this, el);\n\t    this.currentElement = el;\n\n\t\tthis.locator && position(this.locator,el)\n\t    for (var i = 0 ; i < len; i++) {\n\t        var namespaceURI = attrs.getURI(i);\n\t        var value = attrs.getValue(i);\n\t        var qName = attrs.getQName(i);\n\t\t\tvar attr = doc.createAttributeNS(namespaceURI, qName);\n\t\t\tthis.locator &&position(attrs.getLocator(i),attr);\n\t\t\tattr.value = attr.nodeValue = value;\n\t\t\tel.setAttributeNode(attr)\n\t    }\n\t},\n\tendElement:function(namespaceURI, localName, qName) {\n\t\tvar current = this.currentElement\n\t\tvar tagName = current.tagName;\n\t\tthis.currentElement = current.parentNode;\n\t},\n\tstartPrefixMapping:function(prefix, uri) {\n\t},\n\tendPrefixMapping:function(prefix) {\n\t},\n\tprocessingInstruction:function(target, data) {\n\t    var ins = this.doc.createProcessingInstruction(target, data);\n\t    this.locator && position(this.locator,ins)\n\t    appendElement(this, ins);\n\t},\n\tignorableWhitespace:function(ch, start, length) {\n\t},\n\tcharacters:function(chars, start, length) {\n\t\tchars = _toString.apply(this,arguments)\n\t\t//console.log(chars)\n\t\tif(chars){\n\t\t\tif (this.cdata) {\n\t\t\t\tvar charNode = this.doc.createCDATASection(chars);\n\t\t\t} else {\n\t\t\t\tvar charNode = this.doc.createTextNode(chars);\n\t\t\t}\n\t\t\tif(this.currentElement){\n\t\t\t\tthis.currentElement.appendChild(charNode);\n\t\t\t}else if(/^\\s*$/.test(chars)){\n\t\t\t\tthis.doc.appendChild(charNode);\n\t\t\t\t//process xml\n\t\t\t}\n\t\t\tthis.locator && position(this.locator,charNode)\n\t\t}\n\t},\n\tskippedEntity:function(name) {\n\t},\n\tendDocument:function() {\n\t\tthis.doc.normalize();\n\t},\n\tsetDocumentLocator:function (locator) {\n\t    if(this.locator = locator){// && !('lineNumber' in locator)){\n\t    \tlocator.lineNumber = 0;\n\t    }\n\t},\n\t//LexicalHandler\n\tcomment:function(chars, start, length) {\n\t\tchars = _toString.apply(this,arguments)\n\t    var comm = this.doc.createComment(chars);\n\t    this.locator && position(this.locator,comm)\n\t    appendElement(this, comm);\n\t},\n\n\tstartCDATA:function() {\n\t    //used in characters() methods\n\t    this.cdata = true;\n\t},\n\tendCDATA:function() {\n\t    this.cdata = false;\n\t},\n\n\tstartDTD:function(name, publicId, systemId) {\n\t\tvar impl = this.doc.implementation;\n\t    if (impl && impl.createDocumentType) {\n\t        var dt = impl.createDocumentType(name, publicId, systemId);\n\t        this.locator && position(this.locator,dt)\n\t        appendElement(this, dt);\n\t\t\t\t\tthis.doc.doctype = dt;\n\t    }\n\t},\n\t/**\n\t * @see org.xml.sax.ErrorHandler\n\t * @link http://www.saxproject.org/apidoc/org/xml/sax/ErrorHandler.html\n\t */\n\twarning:function(error) {\n\t\tconsole.warn('[xmldom warning]\\t'+error,_locator(this.locator));\n\t},\n\terror:function(error) {\n\t\tconsole.error('[xmldom error]\\t'+error,_locator(this.locator));\n\t},\n\tfatalError:function(error) {\n\t\tthrow new ParseError(error, this.locator);\n\t}\n}\nfunction _locator(l){\n\tif(l){\n\t\treturn '\\n@'+(l.systemId ||'')+'#[line:'+l.lineNumber+',col:'+l.columnNumber+']'\n\t}\n}\nfunction _toString(chars,start,length){\n\tif(typeof chars == 'string'){\n\t\treturn chars.substr(start,length)\n\t}else{//java sax connect width xmldom on rhino(what about: \"? && !(chars instanceof String)\")\n\t\tif(chars.length >= start+length || start){\n\t\t\treturn new java.lang.String(chars,start,length)+'';\n\t\t}\n\t\treturn chars;\n\t}\n}\n\n/*\n * @link http://www.saxproject.org/apidoc/org/xml/sax/ext/LexicalHandler.html\n * used method of org.xml.sax.ext.LexicalHandler:\n *  #comment(chars, start, length)\n *  #startCDATA()\n *  #endCDATA()\n *  #startDTD(name, publicId, systemId)\n *\n *\n * IGNORED method of org.xml.sax.ext.LexicalHandler:\n *  #endDTD()\n *  #startEntity(name)\n *  #endEntity(name)\n *\n *\n * @link http://www.saxproject.org/apidoc/org/xml/sax/ext/DeclHandler.html\n * IGNORED method of org.xml.sax.ext.DeclHandler\n * \t#attributeDecl(eName, aName, type, mode, value)\n *  #elementDecl(name, model)\n *  #externalEntityDecl(name, publicId, systemId)\n *  #internalEntityDecl(name, value)\n * @link http://www.saxproject.org/apidoc/org/xml/sax/ext/EntityResolver2.html\n * IGNORED method of org.xml.sax.EntityResolver2\n *  #resolveEntity(String name,String publicId,String baseURI,String systemId)\n *  #resolveEntity(publicId, systemId)\n *  #getExternalSubset(name, baseURI)\n * @link http://www.saxproject.org/apidoc/org/xml/sax/DTDHandler.html\n * IGNORED method of org.xml.sax.DTDHandler\n *  #notationDecl(name, publicId, systemId) {};\n *  #unparsedEntityDecl(name, publicId, systemId, notationName) {};\n */\n\"endDTD,startEntity,endEntity,attributeDecl,elementDecl,externalEntityDecl,internalEntityDecl,resolveEntity,getExternalSubset,notationDecl,unparsedEntityDecl\".replace(/\\w+/g,function(key){\n\tDOMHandler.prototype[key] = function(){return null}\n})\n\n/* Private static helpers treated below as private instance methods, so don't need to add these to the public API; we might use a Relator to also get rid of non-standard public properties */\nfunction appendElement (hander,node) {\n    if (!hander.currentElement) {\n        hander.doc.appendChild(node);\n    } else {\n        hander.currentElement.appendChild(node);\n    }\n}//appendChild and setAttributeNS are preformance key\n\nexports.__DOMHandler = DOMHandler;\nexports.DOMParser = DOMParser;\n\n/**\n * @deprecated Import/require from main entry point instead\n */\nexports.DOMImplementation = dom.DOMImplementation;\n\n/**\n * @deprecated Import/require from main entry point instead\n */\nexports.XMLSerializer = dom.XMLSerializer;\n","'use strict';\n\nvar freeze = require('./conventions').freeze;\n\n/**\n * The entities that are predefined in every XML document.\n *\n * @see https://www.w3.org/TR/2006/REC-xml11-20060816/#sec-predefined-ent W3C XML 1.1\n * @see https://www.w3.org/TR/2008/REC-xml-20081126/#sec-predefined-ent W3C XML 1.0\n * @see https://en.wikipedia.org/wiki/List_of_XML_and_HTML_character_entity_references#Predefined_entities_in_XML Wikipedia\n */\nexports.XML_ENTITIES = freeze({\n\tamp: '&',\n\tapos: \"'\",\n\tgt: '>',\n\tlt: '<',\n\tquot: '\"',\n});\n\n/**\n * A map of all entities that are detected in an HTML document.\n * They contain all entries from `XML_ENTITIES`.\n *\n * @see XML_ENTITIES\n * @see DOMParser.parseFromString\n * @see DOMImplementation.prototype.createHTMLDocument\n * @see https://html.spec.whatwg.org/#named-character-references WHATWG HTML(5) Spec\n * @see https://html.spec.whatwg.org/entities.json JSON\n * @see https://www.w3.org/TR/xml-entity-names/ W3C XML Entity Names\n * @see https://www.w3.org/TR/html4/sgml/entities.html W3C HTML4/SGML\n * @see https://en.wikipedia.org/wiki/List_of_XML_and_HTML_character_entity_references#Character_entity_references_in_HTML Wikipedia (HTML)\n * @see https://en.wikipedia.org/wiki/List_of_XML_and_HTML_character_entity_references#Entities_representing_special_characters_in_XHTML Wikpedia (XHTML)\n */\nexports.HTML_ENTITIES = freeze({\n\tAacute: '\\u00C1',\n\taacute: '\\u00E1',\n\tAbreve: '\\u0102',\n\tabreve: '\\u0103',\n\tac: '\\u223E',\n\tacd: '\\u223F',\n\tacE: '\\u223E\\u0333',\n\tAcirc: '\\u00C2',\n\tacirc: '\\u00E2',\n\tacute: '\\u00B4',\n\tAcy: '\\u0410',\n\tacy: '\\u0430',\n\tAElig: '\\u00C6',\n\taelig: '\\u00E6',\n\taf: '\\u2061',\n\tAfr: '\\uD835\\uDD04',\n\tafr: '\\uD835\\uDD1E',\n\tAgrave: '\\u00C0',\n\tagrave: '\\u00E0',\n\talefsym: '\\u2135',\n\taleph: '\\u2135',\n\tAlpha: '\\u0391',\n\talpha: '\\u03B1',\n\tAmacr: '\\u0100',\n\tamacr: '\\u0101',\n\tamalg: '\\u2A3F',\n\tAMP: '\\u0026',\n\tamp: '\\u0026',\n\tAnd: '\\u2A53',\n\tand: '\\u2227',\n\tandand: '\\u2A55',\n\tandd: '\\u2A5C',\n\tandslope: '\\u2A58',\n\tandv: '\\u2A5A',\n\tang: '\\u2220',\n\tange: '\\u29A4',\n\tangle: '\\u2220',\n\tangmsd: '\\u2221',\n\tangmsdaa: '\\u29A8',\n\tangmsdab: '\\u29A9',\n\tangmsdac: '\\u29AA',\n\tangmsdad: '\\u29AB',\n\tangmsdae: '\\u29AC',\n\tangmsdaf: '\\u29AD',\n\tangmsdag: '\\u29AE',\n\tangmsdah: '\\u29AF',\n\tangrt: '\\u221F',\n\tangrtvb: '\\u22BE',\n\tangrtvbd: '\\u299D',\n\tangsph: '\\u2222',\n\tangst: '\\u00C5',\n\tangzarr: '\\u237C',\n\tAogon: '\\u0104',\n\taogon: '\\u0105',\n\tAopf: '\\uD835\\uDD38',\n\taopf: '\\uD835\\uDD52',\n\tap: '\\u2248',\n\tapacir: '\\u2A6F',\n\tapE: '\\u2A70',\n\tape: '\\u224A',\n\tapid: '\\u224B',\n\tapos: '\\u0027',\n\tApplyFunction: '\\u2061',\n\tapprox: '\\u2248',\n\tapproxeq: '\\u224A',\n\tAring: '\\u00C5',\n\taring: '\\u00E5',\n\tAscr: '\\uD835\\uDC9C',\n\tascr: '\\uD835\\uDCB6',\n\tAssign: '\\u2254',\n\tast: '\\u002A',\n\tasymp: '\\u2248',\n\tasympeq: '\\u224D',\n\tAtilde: '\\u00C3',\n\tatilde: '\\u00E3',\n\tAuml: '\\u00C4',\n\tauml: '\\u00E4',\n\tawconint: '\\u2233',\n\tawint: '\\u2A11',\n\tbackcong: '\\u224C',\n\tbackepsilon: '\\u03F6',\n\tbackprime: '\\u2035',\n\tbacksim: '\\u223D',\n\tbacksimeq: '\\u22CD',\n\tBackslash: '\\u2216',\n\tBarv: '\\u2AE7',\n\tbarvee: '\\u22BD',\n\tBarwed: '\\u2306',\n\tbarwed: '\\u2305',\n\tbarwedge: '\\u2305',\n\tbbrk: '\\u23B5',\n\tbbrktbrk: '\\u23B6',\n\tbcong: '\\u224C',\n\tBcy: '\\u0411',\n\tbcy: '\\u0431',\n\tbdquo: '\\u201E',\n\tbecaus: '\\u2235',\n\tBecause: '\\u2235',\n\tbecause: '\\u2235',\n\tbemptyv: '\\u29B0',\n\tbepsi: '\\u03F6',\n\tbernou: '\\u212C',\n\tBernoullis: '\\u212C',\n\tBeta: '\\u0392',\n\tbeta: '\\u03B2',\n\tbeth: '\\u2136',\n\tbetween: '\\u226C',\n\tBfr: '\\uD835\\uDD05',\n\tbfr: '\\uD835\\uDD1F',\n\tbigcap: '\\u22C2',\n\tbigcirc: '\\u25EF',\n\tbigcup: '\\u22C3',\n\tbigodot: '\\u2A00',\n\tbigoplus: '\\u2A01',\n\tbigotimes: '\\u2A02',\n\tbigsqcup: '\\u2A06',\n\tbigstar: '\\u2605',\n\tbigtriangledown: '\\u25BD',\n\tbigtriangleup: '\\u25B3',\n\tbiguplus: '\\u2A04',\n\tbigvee: '\\u22C1',\n\tbigwedge: '\\u22C0',\n\tbkarow: '\\u290D',\n\tblacklozenge: '\\u29EB',\n\tblacksquare: '\\u25AA',\n\tblacktriangle: '\\u25B4',\n\tblacktriangledown: '\\u25BE',\n\tblacktriangleleft: '\\u25C2',\n\tblacktriangleright: '\\u25B8',\n\tblank: '\\u2423',\n\tblk12: '\\u2592',\n\tblk14: '\\u2591',\n\tblk34: '\\u2593',\n\tblock: '\\u2588',\n\tbne: '\\u003D\\u20E5',\n\tbnequiv: '\\u2261\\u20E5',\n\tbNot: '\\u2AED',\n\tbnot: '\\u2310',\n\tBopf: '\\uD835\\uDD39',\n\tbopf: '\\uD835\\uDD53',\n\tbot: '\\u22A5',\n\tbottom: '\\u22A5',\n\tbowtie: '\\u22C8',\n\tboxbox: '\\u29C9',\n\tboxDL: '\\u2557',\n\tboxDl: '\\u2556',\n\tboxdL: '\\u2555',\n\tboxdl: '\\u2510',\n\tboxDR: '\\u2554',\n\tboxDr: '\\u2553',\n\tboxdR: '\\u2552',\n\tboxdr: '\\u250C',\n\tboxH: '\\u2550',\n\tboxh: '\\u2500',\n\tboxHD: '\\u2566',\n\tboxHd: '\\u2564',\n\tboxhD: '\\u2565',\n\tboxhd: '\\u252C',\n\tboxHU: '\\u2569',\n\tboxHu: '\\u2567',\n\tboxhU: '\\u2568',\n\tboxhu: '\\u2534',\n\tboxminus: '\\u229F',\n\tboxplus: '\\u229E',\n\tboxtimes: '\\u22A0',\n\tboxUL: '\\u255D',\n\tboxUl: '\\u255C',\n\tboxuL: '\\u255B',\n\tboxul: '\\u2518',\n\tboxUR: '\\u255A',\n\tboxUr: '\\u2559',\n\tboxuR: '\\u2558',\n\tboxur: '\\u2514',\n\tboxV: '\\u2551',\n\tboxv: '\\u2502',\n\tboxVH: '\\u256C',\n\tboxVh: '\\u256B',\n\tboxvH: '\\u256A',\n\tboxvh: '\\u253C',\n\tboxVL: '\\u2563',\n\tboxVl: '\\u2562',\n\tboxvL: '\\u2561',\n\tboxvl: '\\u2524',\n\tboxVR: '\\u2560',\n\tboxVr: '\\u255F',\n\tboxvR: '\\u255E',\n\tboxvr: '\\u251C',\n\tbprime: '\\u2035',\n\tBreve: '\\u02D8',\n\tbreve: '\\u02D8',\n\tbrvbar: '\\u00A6',\n\tBscr: '\\u212C',\n\tbscr: '\\uD835\\uDCB7',\n\tbsemi: '\\u204F',\n\tbsim: '\\u223D',\n\tbsime: '\\u22CD',\n\tbsol: '\\u005C',\n\tbsolb: '\\u29C5',\n\tbsolhsub: '\\u27C8',\n\tbull: '\\u2022',\n\tbullet: '\\u2022',\n\tbump: '\\u224E',\n\tbumpE: '\\u2AAE',\n\tbumpe: '\\u224F',\n\tBumpeq: '\\u224E',\n\tbumpeq: '\\u224F',\n\tCacute: '\\u0106',\n\tcacute: '\\u0107',\n\tCap: '\\u22D2',\n\tcap: '\\u2229',\n\tcapand: '\\u2A44',\n\tcapbrcup: '\\u2A49',\n\tcapcap: '\\u2A4B',\n\tcapcup: '\\u2A47',\n\tcapdot: '\\u2A40',\n\tCapitalDifferentialD: '\\u2145',\n\tcaps: '\\u2229\\uFE00',\n\tcaret: '\\u2041',\n\tcaron: '\\u02C7',\n\tCayleys: '\\u212D',\n\tccaps: '\\u2A4D',\n\tCcaron: '\\u010C',\n\tccaron: '\\u010D',\n\tCcedil: '\\u00C7',\n\tccedil: '\\u00E7',\n\tCcirc: '\\u0108',\n\tccirc: '\\u0109',\n\tCconint: '\\u2230',\n\tccups: '\\u2A4C',\n\tccupssm: '\\u2A50',\n\tCdot: '\\u010A',\n\tcdot: '\\u010B',\n\tcedil: '\\u00B8',\n\tCedilla: '\\u00B8',\n\tcemptyv: '\\u29B2',\n\tcent: '\\u00A2',\n\tCenterDot: '\\u00B7',\n\tcenterdot: '\\u00B7',\n\tCfr: '\\u212D',\n\tcfr: '\\uD835\\uDD20',\n\tCHcy: '\\u0427',\n\tchcy: '\\u0447',\n\tcheck: '\\u2713',\n\tcheckmark: '\\u2713',\n\tChi: '\\u03A7',\n\tchi: '\\u03C7',\n\tcir: '\\u25CB',\n\tcirc: '\\u02C6',\n\tcirceq: '\\u2257',\n\tcirclearrowleft: '\\u21BA',\n\tcirclearrowright: '\\u21BB',\n\tcircledast: '\\u229B',\n\tcircledcirc: '\\u229A',\n\tcircleddash: '\\u229D',\n\tCircleDot: '\\u2299',\n\tcircledR: '\\u00AE',\n\tcircledS: '\\u24C8',\n\tCircleMinus: '\\u2296',\n\tCirclePlus: '\\u2295',\n\tCircleTimes: '\\u2297',\n\tcirE: '\\u29C3',\n\tcire: '\\u2257',\n\tcirfnint: '\\u2A10',\n\tcirmid: '\\u2AEF',\n\tcirscir: '\\u29C2',\n\tClockwiseContourIntegral: '\\u2232',\n\tCloseCurlyDoubleQuote: '\\u201D',\n\tCloseCurlyQuote: '\\u2019',\n\tclubs: '\\u2663',\n\tclubsuit: '\\u2663',\n\tColon: '\\u2237',\n\tcolon: '\\u003A',\n\tColone: '\\u2A74',\n\tcolone: '\\u2254',\n\tcoloneq: '\\u2254',\n\tcomma: '\\u002C',\n\tcommat: '\\u0040',\n\tcomp: '\\u2201',\n\tcompfn: '\\u2218',\n\tcomplement: '\\u2201',\n\tcomplexes: '\\u2102',\n\tcong: '\\u2245',\n\tcongdot: '\\u2A6D',\n\tCongruent: '\\u2261',\n\tConint: '\\u222F',\n\tconint: '\\u222E',\n\tContourIntegral: '\\u222E',\n\tCopf: '\\u2102',\n\tcopf: '\\uD835\\uDD54',\n\tcoprod: '\\u2210',\n\tCoproduct: '\\u2210',\n\tCOPY: '\\u00A9',\n\tcopy: '\\u00A9',\n\tcopysr: '\\u2117',\n\tCounterClockwiseContourIntegral: '\\u2233',\n\tcrarr: '\\u21B5',\n\tCross: '\\u2A2F',\n\tcross: '\\u2717',\n\tCscr: '\\uD835\\uDC9E',\n\tcscr: '\\uD835\\uDCB8',\n\tcsub: '\\u2ACF',\n\tcsube: '\\u2AD1',\n\tcsup: '\\u2AD0',\n\tcsupe: '\\u2AD2',\n\tctdot: '\\u22EF',\n\tcudarrl: '\\u2938',\n\tcudarrr: '\\u2935',\n\tcuepr: '\\u22DE',\n\tcuesc: '\\u22DF',\n\tcularr: '\\u21B6',\n\tcularrp: '\\u293D',\n\tCup: '\\u22D3',\n\tcup: '\\u222A',\n\tcupbrcap: '\\u2A48',\n\tCupCap: '\\u224D',\n\tcupcap: '\\u2A46',\n\tcupcup: '\\u2A4A',\n\tcupdot: '\\u228D',\n\tcupor: '\\u2A45',\n\tcups: '\\u222A\\uFE00',\n\tcurarr: '\\u21B7',\n\tcurarrm: '\\u293C',\n\tcurlyeqprec: '\\u22DE',\n\tcurlyeqsucc: '\\u22DF',\n\tcurlyvee: '\\u22CE',\n\tcurlywedge: '\\u22CF',\n\tcurren: '\\u00A4',\n\tcurvearrowleft: '\\u21B6',\n\tcurvearrowright: '\\u21B7',\n\tcuvee: '\\u22CE',\n\tcuwed: '\\u22CF',\n\tcwconint: '\\u2232',\n\tcwint: '\\u2231',\n\tcylcty: '\\u232D',\n\tDagger: '\\u2021',\n\tdagger: '\\u2020',\n\tdaleth: '\\u2138',\n\tDarr: '\\u21A1',\n\tdArr: '\\u21D3',\n\tdarr: '\\u2193',\n\tdash: '\\u2010',\n\tDashv: '\\u2AE4',\n\tdashv: '\\u22A3',\n\tdbkarow: '\\u290F',\n\tdblac: '\\u02DD',\n\tDcaron: '\\u010E',\n\tdcaron: '\\u010F',\n\tDcy: '\\u0414',\n\tdcy: '\\u0434',\n\tDD: '\\u2145',\n\tdd: '\\u2146',\n\tddagger: '\\u2021',\n\tddarr: '\\u21CA',\n\tDDotrahd: '\\u2911',\n\tddotseq: '\\u2A77',\n\tdeg: '\\u00B0',\n\tDel: '\\u2207',\n\tDelta: '\\u0394',\n\tdelta: '\\u03B4',\n\tdemptyv: '\\u29B1',\n\tdfisht: '\\u297F',\n\tDfr: '\\uD835\\uDD07',\n\tdfr: '\\uD835\\uDD21',\n\tdHar: '\\u2965',\n\tdharl: '\\u21C3',\n\tdharr: '\\u21C2',\n\tDiacriticalAcute: '\\u00B4',\n\tDiacriticalDot: '\\u02D9',\n\tDiacriticalDoubleAcute: '\\u02DD',\n\tDiacriticalGrave: '\\u0060',\n\tDiacriticalTilde: '\\u02DC',\n\tdiam: '\\u22C4',\n\tDiamond: '\\u22C4',\n\tdiamond: '\\u22C4',\n\tdiamondsuit: '\\u2666',\n\tdiams: '\\u2666',\n\tdie: '\\u00A8',\n\tDifferentialD: '\\u2146',\n\tdigamma: '\\u03DD',\n\tdisin: '\\u22F2',\n\tdiv: '\\u00F7',\n\tdivide: '\\u00F7',\n\tdivideontimes: '\\u22C7',\n\tdivonx: '\\u22C7',\n\tDJcy: '\\u0402',\n\tdjcy: '\\u0452',\n\tdlcorn: '\\u231E',\n\tdlcrop: '\\u230D',\n\tdollar: '\\u0024',\n\tDopf: '\\uD835\\uDD3B',\n\tdopf: '\\uD835\\uDD55',\n\tDot: '\\u00A8',\n\tdot: '\\u02D9',\n\tDotDot: '\\u20DC',\n\tdoteq: '\\u2250',\n\tdoteqdot: '\\u2251',\n\tDotEqual: '\\u2250',\n\tdotminus: '\\u2238',\n\tdotplus: '\\u2214',\n\tdotsquare: '\\u22A1',\n\tdoublebarwedge: '\\u2306',\n\tDoubleContourIntegral: '\\u222F',\n\tDoubleDot: '\\u00A8',\n\tDoubleDownArrow: '\\u21D3',\n\tDoubleLeftArrow: '\\u21D0',\n\tDoubleLeftRightArrow: '\\u21D4',\n\tDoubleLeftTee: '\\u2AE4',\n\tDoubleLongLeftArrow: '\\u27F8',\n\tDoubleLongLeftRightArrow: '\\u27FA',\n\tDoubleLongRightArrow: '\\u27F9',\n\tDoubleRightArrow: '\\u21D2',\n\tDoubleRightTee: '\\u22A8',\n\tDoubleUpArrow: '\\u21D1',\n\tDoubleUpDownArrow: '\\u21D5',\n\tDoubleVerticalBar: '\\u2225',\n\tDownArrow: '\\u2193',\n\tDownarrow: '\\u21D3',\n\tdownarrow: '\\u2193',\n\tDownArrowBar: '\\u2913',\n\tDownArrowUpArrow: '\\u21F5',\n\tDownBreve: '\\u0311',\n\tdowndownarrows: '\\u21CA',\n\tdownharpoonleft: '\\u21C3',\n\tdownharpoonright: '\\u21C2',\n\tDownLeftRightVector: '\\u2950',\n\tDownLeftTeeVector: '\\u295E',\n\tDownLeftVector: '\\u21BD',\n\tDownLeftVectorBar: '\\u2956',\n\tDownRightTeeVector: '\\u295F',\n\tDownRightVector: '\\u21C1',\n\tDownRightVectorBar: '\\u2957',\n\tDownTee: '\\u22A4',\n\tDownTeeArrow: '\\u21A7',\n\tdrbkarow: '\\u2910',\n\tdrcorn: '\\u231F',\n\tdrcrop: '\\u230C',\n\tDscr: '\\uD835\\uDC9F',\n\tdscr: '\\uD835\\uDCB9',\n\tDScy: '\\u0405',\n\tdscy: '\\u0455',\n\tdsol: '\\u29F6',\n\tDstrok: '\\u0110',\n\tdstrok: '\\u0111',\n\tdtdot: '\\u22F1',\n\tdtri: '\\u25BF',\n\tdtrif: '\\u25BE',\n\tduarr: '\\u21F5',\n\tduhar: '\\u296F',\n\tdwangle: '\\u29A6',\n\tDZcy: '\\u040F',\n\tdzcy: '\\u045F',\n\tdzigrarr: '\\u27FF',\n\tEacute: '\\u00C9',\n\teacute: '\\u00E9',\n\teaster: '\\u2A6E',\n\tEcaron: '\\u011A',\n\tecaron: '\\u011B',\n\tecir: '\\u2256',\n\tEcirc: '\\u00CA',\n\tecirc: '\\u00EA',\n\tecolon: '\\u2255',\n\tEcy: '\\u042D',\n\tecy: '\\u044D',\n\teDDot: '\\u2A77',\n\tEdot: '\\u0116',\n\teDot: '\\u2251',\n\tedot: '\\u0117',\n\tee: '\\u2147',\n\tefDot: '\\u2252',\n\tEfr: '\\uD835\\uDD08',\n\tefr: '\\uD835\\uDD22',\n\teg: '\\u2A9A',\n\tEgrave: '\\u00C8',\n\tegrave: '\\u00E8',\n\tegs: '\\u2A96',\n\tegsdot: '\\u2A98',\n\tel: '\\u2A99',\n\tElement: '\\u2208',\n\telinters: '\\u23E7',\n\tell: '\\u2113',\n\tels: '\\u2A95',\n\telsdot: '\\u2A97',\n\tEmacr: '\\u0112',\n\temacr: '\\u0113',\n\tempty: '\\u2205',\n\temptyset: '\\u2205',\n\tEmptySmallSquare: '\\u25FB',\n\temptyv: '\\u2205',\n\tEmptyVerySmallSquare: '\\u25AB',\n\temsp: '\\u2003',\n\temsp13: '\\u2004',\n\temsp14: '\\u2005',\n\tENG: '\\u014A',\n\teng: '\\u014B',\n\tensp: '\\u2002',\n\tEogon: '\\u0118',\n\teogon: '\\u0119',\n\tEopf: '\\uD835\\uDD3C',\n\teopf: '\\uD835\\uDD56',\n\tepar: '\\u22D5',\n\teparsl: '\\u29E3',\n\teplus: '\\u2A71',\n\tepsi: '\\u03B5',\n\tEpsilon: '\\u0395',\n\tepsilon: '\\u03B5',\n\tepsiv: '\\u03F5',\n\teqcirc: '\\u2256',\n\teqcolon: '\\u2255',\n\teqsim: '\\u2242',\n\teqslantgtr: '\\u2A96',\n\teqslantless: '\\u2A95',\n\tEqual: '\\u2A75',\n\tequals: '\\u003D',\n\tEqualTilde: '\\u2242',\n\tequest: '\\u225F',\n\tEquilibrium: '\\u21CC',\n\tequiv: '\\u2261',\n\tequivDD: '\\u2A78',\n\teqvparsl: '\\u29E5',\n\terarr: '\\u2971',\n\terDot: '\\u2253',\n\tEscr: '\\u2130',\n\tescr: '\\u212F',\n\tesdot: '\\u2250',\n\tEsim: '\\u2A73',\n\tesim: '\\u2242',\n\tEta: '\\u0397',\n\teta: '\\u03B7',\n\tETH: '\\u00D0',\n\teth: '\\u00F0',\n\tEuml: '\\u00CB',\n\teuml: '\\u00EB',\n\teuro: '\\u20AC',\n\texcl: '\\u0021',\n\texist: '\\u2203',\n\tExists: '\\u2203',\n\texpectation: '\\u2130',\n\tExponentialE: '\\u2147',\n\texponentiale: '\\u2147',\n\tfallingdotseq: '\\u2252',\n\tFcy: '\\u0424',\n\tfcy: '\\u0444',\n\tfemale: '\\u2640',\n\tffilig: '\\uFB03',\n\tfflig: '\\uFB00',\n\tffllig: '\\uFB04',\n\tFfr: '\\uD835\\uDD09',\n\tffr: '\\uD835\\uDD23',\n\tfilig: '\\uFB01',\n\tFilledSmallSquare: '\\u25FC',\n\tFilledVerySmallSquare: '\\u25AA',\n\tfjlig: '\\u0066\\u006A',\n\tflat: '\\u266D',\n\tfllig: '\\uFB02',\n\tfltns: '\\u25B1',\n\tfnof: '\\u0192',\n\tFopf: '\\uD835\\uDD3D',\n\tfopf: '\\uD835\\uDD57',\n\tForAll: '\\u2200',\n\tforall: '\\u2200',\n\tfork: '\\u22D4',\n\tforkv: '\\u2AD9',\n\tFouriertrf: '\\u2131',\n\tfpartint: '\\u2A0D',\n\tfrac12: '\\u00BD',\n\tfrac13: '\\u2153',\n\tfrac14: '\\u00BC',\n\tfrac15: '\\u2155',\n\tfrac16: '\\u2159',\n\tfrac18: '\\u215B',\n\tfrac23: '\\u2154',\n\tfrac25: '\\u2156',\n\tfrac34: '\\u00BE',\n\tfrac35: '\\u2157',\n\tfrac38: '\\u215C',\n\tfrac45: '\\u2158',\n\tfrac56: '\\u215A',\n\tfrac58: '\\u215D',\n\tfrac78: '\\u215E',\n\tfrasl: '\\u2044',\n\tfrown: '\\u2322',\n\tFscr: '\\u2131',\n\tfscr: '\\uD835\\uDCBB',\n\tgacute: '\\u01F5',\n\tGamma: '\\u0393',\n\tgamma: '\\u03B3',\n\tGammad: '\\u03DC',\n\tgammad: '\\u03DD',\n\tgap: '\\u2A86',\n\tGbreve: '\\u011E',\n\tgbreve: '\\u011F',\n\tGcedil: '\\u0122',\n\tGcirc: '\\u011C',\n\tgcirc: '\\u011D',\n\tGcy: '\\u0413',\n\tgcy: '\\u0433',\n\tGdot: '\\u0120',\n\tgdot: '\\u0121',\n\tgE: '\\u2267',\n\tge: '\\u2265',\n\tgEl: '\\u2A8C',\n\tgel: '\\u22DB',\n\tgeq: '\\u2265',\n\tgeqq: '\\u2267',\n\tgeqslant: '\\u2A7E',\n\tges: '\\u2A7E',\n\tgescc: '\\u2AA9',\n\tgesdot: '\\u2A80',\n\tgesdoto: '\\u2A82',\n\tgesdotol: '\\u2A84',\n\tgesl: '\\u22DB\\uFE00',\n\tgesles: '\\u2A94',\n\tGfr: '\\uD835\\uDD0A',\n\tgfr: '\\uD835\\uDD24',\n\tGg: '\\u22D9',\n\tgg: '\\u226B',\n\tggg: '\\u22D9',\n\tgimel: '\\u2137',\n\tGJcy: '\\u0403',\n\tgjcy: '\\u0453',\n\tgl: '\\u2277',\n\tgla: '\\u2AA5',\n\tglE: '\\u2A92',\n\tglj: '\\u2AA4',\n\tgnap: '\\u2A8A',\n\tgnapprox: '\\u2A8A',\n\tgnE: '\\u2269',\n\tgne: '\\u2A88',\n\tgneq: '\\u2A88',\n\tgneqq: '\\u2269',\n\tgnsim: '\\u22E7',\n\tGopf: '\\uD835\\uDD3E',\n\tgopf: '\\uD835\\uDD58',\n\tgrave: '\\u0060',\n\tGreaterEqual: '\\u2265',\n\tGreaterEqualLess: '\\u22DB',\n\tGreaterFullEqual: '\\u2267',\n\tGreaterGreater: '\\u2AA2',\n\tGreaterLess: '\\u2277',\n\tGreaterSlantEqual: '\\u2A7E',\n\tGreaterTilde: '\\u2273',\n\tGscr: '\\uD835\\uDCA2',\n\tgscr: '\\u210A',\n\tgsim: '\\u2273',\n\tgsime: '\\u2A8E',\n\tgsiml: '\\u2A90',\n\tGt: '\\u226B',\n\tGT: '\\u003E',\n\tgt: '\\u003E',\n\tgtcc: '\\u2AA7',\n\tgtcir: '\\u2A7A',\n\tgtdot: '\\u22D7',\n\tgtlPar: '\\u2995',\n\tgtquest: '\\u2A7C',\n\tgtrapprox: '\\u2A86',\n\tgtrarr: '\\u2978',\n\tgtrdot: '\\u22D7',\n\tgtreqless: '\\u22DB',\n\tgtreqqless: '\\u2A8C',\n\tgtrless: '\\u2277',\n\tgtrsim: '\\u2273',\n\tgvertneqq: '\\u2269\\uFE00',\n\tgvnE: '\\u2269\\uFE00',\n\tHacek: '\\u02C7',\n\thairsp: '\\u200A',\n\thalf: '\\u00BD',\n\thamilt: '\\u210B',\n\tHARDcy: '\\u042A',\n\thardcy: '\\u044A',\n\thArr: '\\u21D4',\n\tharr: '\\u2194',\n\tharrcir: '\\u2948',\n\tharrw: '\\u21AD',\n\tHat: '\\u005E',\n\thbar: '\\u210F',\n\tHcirc: '\\u0124',\n\thcirc: '\\u0125',\n\thearts: '\\u2665',\n\theartsuit: '\\u2665',\n\thellip: '\\u2026',\n\thercon: '\\u22B9',\n\tHfr: '\\u210C',\n\thfr: '\\uD835\\uDD25',\n\tHilbertSpace: '\\u210B',\n\thksearow: '\\u2925',\n\thkswarow: '\\u2926',\n\thoarr: '\\u21FF',\n\thomtht: '\\u223B',\n\thookleftarrow: '\\u21A9',\n\thookrightarrow: '\\u21AA',\n\tHopf: '\\u210D',\n\thopf: '\\uD835\\uDD59',\n\thorbar: '\\u2015',\n\tHorizontalLine: '\\u2500',\n\tHscr: '\\u210B',\n\thscr: '\\uD835\\uDCBD',\n\thslash: '\\u210F',\n\tHstrok: '\\u0126',\n\thstrok: '\\u0127',\n\tHumpDownHump: '\\u224E',\n\tHumpEqual: '\\u224F',\n\thybull: '\\u2043',\n\thyphen: '\\u2010',\n\tIacute: '\\u00CD',\n\tiacute: '\\u00ED',\n\tic: '\\u2063',\n\tIcirc: '\\u00CE',\n\ticirc: '\\u00EE',\n\tIcy: '\\u0418',\n\ticy: '\\u0438',\n\tIdot: '\\u0130',\n\tIEcy: '\\u0415',\n\tiecy: '\\u0435',\n\tiexcl: '\\u00A1',\n\tiff: '\\u21D4',\n\tIfr: '\\u2111',\n\tifr: '\\uD835\\uDD26',\n\tIgrave: '\\u00CC',\n\tigrave: '\\u00EC',\n\tii: '\\u2148',\n\tiiiint: '\\u2A0C',\n\tiiint: '\\u222D',\n\tiinfin: '\\u29DC',\n\tiiota: '\\u2129',\n\tIJlig: '\\u0132',\n\tijlig: '\\u0133',\n\tIm: '\\u2111',\n\tImacr: '\\u012A',\n\timacr: '\\u012B',\n\timage: '\\u2111',\n\tImaginaryI: '\\u2148',\n\timagline: '\\u2110',\n\timagpart: '\\u2111',\n\timath: '\\u0131',\n\timof: '\\u22B7',\n\timped: '\\u01B5',\n\tImplies: '\\u21D2',\n\tin: '\\u2208',\n\tincare: '\\u2105',\n\tinfin: '\\u221E',\n\tinfintie: '\\u29DD',\n\tinodot: '\\u0131',\n\tInt: '\\u222C',\n\tint: '\\u222B',\n\tintcal: '\\u22BA',\n\tintegers: '\\u2124',\n\tIntegral: '\\u222B',\n\tintercal: '\\u22BA',\n\tIntersection: '\\u22C2',\n\tintlarhk: '\\u2A17',\n\tintprod: '\\u2A3C',\n\tInvisibleComma: '\\u2063',\n\tInvisibleTimes: '\\u2062',\n\tIOcy: '\\u0401',\n\tiocy: '\\u0451',\n\tIogon: '\\u012E',\n\tiogon: '\\u012F',\n\tIopf: '\\uD835\\uDD40',\n\tiopf: '\\uD835\\uDD5A',\n\tIota: '\\u0399',\n\tiota: '\\u03B9',\n\tiprod: '\\u2A3C',\n\tiquest: '\\u00BF',\n\tIscr: '\\u2110',\n\tiscr: '\\uD835\\uDCBE',\n\tisin: '\\u2208',\n\tisindot: '\\u22F5',\n\tisinE: '\\u22F9',\n\tisins: '\\u22F4',\n\tisinsv: '\\u22F3',\n\tisinv: '\\u2208',\n\tit: '\\u2062',\n\tItilde: '\\u0128',\n\titilde: '\\u0129',\n\tIukcy: '\\u0406',\n\tiukcy: '\\u0456',\n\tIuml: '\\u00CF',\n\tiuml: '\\u00EF',\n\tJcirc: '\\u0134',\n\tjcirc: '\\u0135',\n\tJcy: '\\u0419',\n\tjcy: '\\u0439',\n\tJfr: '\\uD835\\uDD0D',\n\tjfr: '\\uD835\\uDD27',\n\tjmath: '\\u0237',\n\tJopf: '\\uD835\\uDD41',\n\tjopf: '\\uD835\\uDD5B',\n\tJscr: '\\uD835\\uDCA5',\n\tjscr: '\\uD835\\uDCBF',\n\tJsercy: '\\u0408',\n\tjsercy: '\\u0458',\n\tJukcy: '\\u0404',\n\tjukcy: '\\u0454',\n\tKappa: '\\u039A',\n\tkappa: '\\u03BA',\n\tkappav: '\\u03F0',\n\tKcedil: '\\u0136',\n\tkcedil: '\\u0137',\n\tKcy: '\\u041A',\n\tkcy: '\\u043A',\n\tKfr: '\\uD835\\uDD0E',\n\tkfr: '\\uD835\\uDD28',\n\tkgreen: '\\u0138',\n\tKHcy: '\\u0425',\n\tkhcy: '\\u0445',\n\tKJcy: '\\u040C',\n\tkjcy: '\\u045C',\n\tKopf: '\\uD835\\uDD42',\n\tkopf: '\\uD835\\uDD5C',\n\tKscr: '\\uD835\\uDCA6',\n\tkscr: '\\uD835\\uDCC0',\n\tlAarr: '\\u21DA',\n\tLacute: '\\u0139',\n\tlacute: '\\u013A',\n\tlaemptyv: '\\u29B4',\n\tlagran: '\\u2112',\n\tLambda: '\\u039B',\n\tlambda: '\\u03BB',\n\tLang: '\\u27EA',\n\tlang: '\\u27E8',\n\tlangd: '\\u2991',\n\tlangle: '\\u27E8',\n\tlap: '\\u2A85',\n\tLaplacetrf: '\\u2112',\n\tlaquo: '\\u00AB',\n\tLarr: '\\u219E',\n\tlArr: '\\u21D0',\n\tlarr: '\\u2190',\n\tlarrb: '\\u21E4',\n\tlarrbfs: '\\u291F',\n\tlarrfs: '\\u291D',\n\tlarrhk: '\\u21A9',\n\tlarrlp: '\\u21AB',\n\tlarrpl: '\\u2939',\n\tlarrsim: '\\u2973',\n\tlarrtl: '\\u21A2',\n\tlat: '\\u2AAB',\n\tlAtail: '\\u291B',\n\tlatail: '\\u2919',\n\tlate: '\\u2AAD',\n\tlates: '\\u2AAD\\uFE00',\n\tlBarr: '\\u290E',\n\tlbarr: '\\u290C',\n\tlbbrk: '\\u2772',\n\tlbrace: '\\u007B',\n\tlbrack: '\\u005B',\n\tlbrke: '\\u298B',\n\tlbrksld: '\\u298F',\n\tlbrkslu: '\\u298D',\n\tLcaron: '\\u013D',\n\tlcaron: '\\u013E',\n\tLcedil: '\\u013B',\n\tlcedil: '\\u013C',\n\tlceil: '\\u2308',\n\tlcub: '\\u007B',\n\tLcy: '\\u041B',\n\tlcy: '\\u043B',\n\tldca: '\\u2936',\n\tldquo: '\\u201C',\n\tldquor: '\\u201E',\n\tldrdhar: '\\u2967',\n\tldrushar: '\\u294B',\n\tldsh: '\\u21B2',\n\tlE: '\\u2266',\n\tle: '\\u2264',\n\tLeftAngleBracket: '\\u27E8',\n\tLeftArrow: '\\u2190',\n\tLeftarrow: '\\u21D0',\n\tleftarrow: '\\u2190',\n\tLeftArrowBar: '\\u21E4',\n\tLeftArrowRightArrow: '\\u21C6',\n\tleftarrowtail: '\\u21A2',\n\tLeftCeiling: '\\u2308',\n\tLeftDoubleBracket: '\\u27E6',\n\tLeftDownTeeVector: '\\u2961',\n\tLeftDownVector: '\\u21C3',\n\tLeftDownVectorBar: '\\u2959',\n\tLeftFloor: '\\u230A',\n\tleftharpoondown: '\\u21BD',\n\tleftharpoonup: '\\u21BC',\n\tleftleftarrows: '\\u21C7',\n\tLeftRightArrow: '\\u2194',\n\tLeftrightarrow: '\\u21D4',\n\tleftrightarrow: '\\u2194',\n\tleftrightarrows: '\\u21C6',\n\tleftrightharpoons: '\\u21CB',\n\tleftrightsquigarrow: '\\u21AD',\n\tLeftRightVector: '\\u294E',\n\tLeftTee: '\\u22A3',\n\tLeftTeeArrow: '\\u21A4',\n\tLeftTeeVector: '\\u295A',\n\tleftthreetimes: '\\u22CB',\n\tLeftTriangle: '\\u22B2',\n\tLeftTriangleBar: '\\u29CF',\n\tLeftTriangleEqual: '\\u22B4',\n\tLeftUpDownVector: '\\u2951',\n\tLeftUpTeeVector: '\\u2960',\n\tLeftUpVector: '\\u21BF',\n\tLeftUpVectorBar: '\\u2958',\n\tLeftVector: '\\u21BC',\n\tLeftVectorBar: '\\u2952',\n\tlEg: '\\u2A8B',\n\tleg: '\\u22DA',\n\tleq: '\\u2264',\n\tleqq: '\\u2266',\n\tleqslant: '\\u2A7D',\n\tles: '\\u2A7D',\n\tlescc: '\\u2AA8',\n\tlesdot: '\\u2A7F',\n\tlesdoto: '\\u2A81',\n\tlesdotor: '\\u2A83',\n\tlesg: '\\u22DA\\uFE00',\n\tlesges: '\\u2A93',\n\tlessapprox: '\\u2A85',\n\tlessdot: '\\u22D6',\n\tlesseqgtr: '\\u22DA',\n\tlesseqqgtr: '\\u2A8B',\n\tLessEqualGreater: '\\u22DA',\n\tLessFullEqual: '\\u2266',\n\tLessGreater: '\\u2276',\n\tlessgtr: '\\u2276',\n\tLessLess: '\\u2AA1',\n\tlesssim: '\\u2272',\n\tLessSlantEqual: '\\u2A7D',\n\tLessTilde: '\\u2272',\n\tlfisht: '\\u297C',\n\tlfloor: '\\u230A',\n\tLfr: '\\uD835\\uDD0F',\n\tlfr: '\\uD835\\uDD29',\n\tlg: '\\u2276',\n\tlgE: '\\u2A91',\n\tlHar: '\\u2962',\n\tlhard: '\\u21BD',\n\tlharu: '\\u21BC',\n\tlharul: '\\u296A',\n\tlhblk: '\\u2584',\n\tLJcy: '\\u0409',\n\tljcy: '\\u0459',\n\tLl: '\\u22D8',\n\tll: '\\u226A',\n\tllarr: '\\u21C7',\n\tllcorner: '\\u231E',\n\tLleftarrow: '\\u21DA',\n\tllhard: '\\u296B',\n\tlltri: '\\u25FA',\n\tLmidot: '\\u013F',\n\tlmidot: '\\u0140',\n\tlmoust: '\\u23B0',\n\tlmoustache: '\\u23B0',\n\tlnap: '\\u2A89',\n\tlnapprox: '\\u2A89',\n\tlnE: '\\u2268',\n\tlne: '\\u2A87',\n\tlneq: '\\u2A87',\n\tlneqq: '\\u2268',\n\tlnsim: '\\u22E6',\n\tloang: '\\u27EC',\n\tloarr: '\\u21FD',\n\tlobrk: '\\u27E6',\n\tLongLeftArrow: '\\u27F5',\n\tLongleftarrow: '\\u27F8',\n\tlongleftarrow: '\\u27F5',\n\tLongLeftRightArrow: '\\u27F7',\n\tLongleftrightarrow: '\\u27FA',\n\tlongleftrightarrow: '\\u27F7',\n\tlongmapsto: '\\u27FC',\n\tLongRightArrow: '\\u27F6',\n\tLongrightarrow: '\\u27F9',\n\tlongrightarrow: '\\u27F6',\n\tlooparrowleft: '\\u21AB',\n\tlooparrowright: '\\u21AC',\n\tlopar: '\\u2985',\n\tLopf: '\\uD835\\uDD43',\n\tlopf: '\\uD835\\uDD5D',\n\tloplus: '\\u2A2D',\n\tlotimes: '\\u2A34',\n\tlowast: '\\u2217',\n\tlowbar: '\\u005F',\n\tLowerLeftArrow: '\\u2199',\n\tLowerRightArrow: '\\u2198',\n\tloz: '\\u25CA',\n\tlozenge: '\\u25CA',\n\tlozf: '\\u29EB',\n\tlpar: '\\u0028',\n\tlparlt: '\\u2993',\n\tlrarr: '\\u21C6',\n\tlrcorner: '\\u231F',\n\tlrhar: '\\u21CB',\n\tlrhard: '\\u296D',\n\tlrm: '\\u200E',\n\tlrtri: '\\u22BF',\n\tlsaquo: '\\u2039',\n\tLscr: '\\u2112',\n\tlscr: '\\uD835\\uDCC1',\n\tLsh: '\\u21B0',\n\tlsh: '\\u21B0',\n\tlsim: '\\u2272',\n\tlsime: '\\u2A8D',\n\tlsimg: '\\u2A8F',\n\tlsqb: '\\u005B',\n\tlsquo: '\\u2018',\n\tlsquor: '\\u201A',\n\tLstrok: '\\u0141',\n\tlstrok: '\\u0142',\n\tLt: '\\u226A',\n\tLT: '\\u003C',\n\tlt: '\\u003C',\n\tltcc: '\\u2AA6',\n\tltcir: '\\u2A79',\n\tltdot: '\\u22D6',\n\tlthree: '\\u22CB',\n\tltimes: '\\u22C9',\n\tltlarr: '\\u2976',\n\tltquest: '\\u2A7B',\n\tltri: '\\u25C3',\n\tltrie: '\\u22B4',\n\tltrif: '\\u25C2',\n\tltrPar: '\\u2996',\n\tlurdshar: '\\u294A',\n\tluruhar: '\\u2966',\n\tlvertneqq: '\\u2268\\uFE00',\n\tlvnE: '\\u2268\\uFE00',\n\tmacr: '\\u00AF',\n\tmale: '\\u2642',\n\tmalt: '\\u2720',\n\tmaltese: '\\u2720',\n\tMap: '\\u2905',\n\tmap: '\\u21A6',\n\tmapsto: '\\u21A6',\n\tmapstodown: '\\u21A7',\n\tmapstoleft: '\\u21A4',\n\tmapstoup: '\\u21A5',\n\tmarker: '\\u25AE',\n\tmcomma: '\\u2A29',\n\tMcy: '\\u041C',\n\tmcy: '\\u043C',\n\tmdash: '\\u2014',\n\tmDDot: '\\u223A',\n\tmeasuredangle: '\\u2221',\n\tMediumSpace: '\\u205F',\n\tMellintrf: '\\u2133',\n\tMfr: '\\uD835\\uDD10',\n\tmfr: '\\uD835\\uDD2A',\n\tmho: '\\u2127',\n\tmicro: '\\u00B5',\n\tmid: '\\u2223',\n\tmidast: '\\u002A',\n\tmidcir: '\\u2AF0',\n\tmiddot: '\\u00B7',\n\tminus: '\\u2212',\n\tminusb: '\\u229F',\n\tminusd: '\\u2238',\n\tminusdu: '\\u2A2A',\n\tMinusPlus: '\\u2213',\n\tmlcp: '\\u2ADB',\n\tmldr: '\\u2026',\n\tmnplus: '\\u2213',\n\tmodels: '\\u22A7',\n\tMopf: '\\uD835\\uDD44',\n\tmopf: '\\uD835\\uDD5E',\n\tmp: '\\u2213',\n\tMscr: '\\u2133',\n\tmscr: '\\uD835\\uDCC2',\n\tmstpos: '\\u223E',\n\tMu: '\\u039C',\n\tmu: '\\u03BC',\n\tmultimap: '\\u22B8',\n\tmumap: '\\u22B8',\n\tnabla: '\\u2207',\n\tNacute: '\\u0143',\n\tnacute: '\\u0144',\n\tnang: '\\u2220\\u20D2',\n\tnap: '\\u2249',\n\tnapE: '\\u2A70\\u0338',\n\tnapid: '\\u224B\\u0338',\n\tnapos: '\\u0149',\n\tnapprox: '\\u2249',\n\tnatur: '\\u266E',\n\tnatural: '\\u266E',\n\tnaturals: '\\u2115',\n\tnbsp: '\\u00A0',\n\tnbump: '\\u224E\\u0338',\n\tnbumpe: '\\u224F\\u0338',\n\tncap: '\\u2A43',\n\tNcaron: '\\u0147',\n\tncaron: '\\u0148',\n\tNcedil: '\\u0145',\n\tncedil: '\\u0146',\n\tncong: '\\u2247',\n\tncongdot: '\\u2A6D\\u0338',\n\tncup: '\\u2A42',\n\tNcy: '\\u041D',\n\tncy: '\\u043D',\n\tndash: '\\u2013',\n\tne: '\\u2260',\n\tnearhk: '\\u2924',\n\tneArr: '\\u21D7',\n\tnearr: '\\u2197',\n\tnearrow: '\\u2197',\n\tnedot: '\\u2250\\u0338',\n\tNegativeMediumSpace: '\\u200B',\n\tNegativeThickSpace: '\\u200B',\n\tNegativeThinSpace: '\\u200B',\n\tNegativeVeryThinSpace: '\\u200B',\n\tnequiv: '\\u2262',\n\tnesear: '\\u2928',\n\tnesim: '\\u2242\\u0338',\n\tNestedGreaterGreater: '\\u226B',\n\tNestedLessLess: '\\u226A',\n\tNewLine: '\\u000A',\n\tnexist: '\\u2204',\n\tnexists: '\\u2204',\n\tNfr: '\\uD835\\uDD11',\n\tnfr: '\\uD835\\uDD2B',\n\tngE: '\\u2267\\u0338',\n\tnge: '\\u2271',\n\tngeq: '\\u2271',\n\tngeqq: '\\u2267\\u0338',\n\tngeqslant: '\\u2A7E\\u0338',\n\tnges: '\\u2A7E\\u0338',\n\tnGg: '\\u22D9\\u0338',\n\tngsim: '\\u2275',\n\tnGt: '\\u226B\\u20D2',\n\tngt: '\\u226F',\n\tngtr: '\\u226F',\n\tnGtv: '\\u226B\\u0338',\n\tnhArr: '\\u21CE',\n\tnharr: '\\u21AE',\n\tnhpar: '\\u2AF2',\n\tni: '\\u220B',\n\tnis: '\\u22FC',\n\tnisd: '\\u22FA',\n\tniv: '\\u220B',\n\tNJcy: '\\u040A',\n\tnjcy: '\\u045A',\n\tnlArr: '\\u21CD',\n\tnlarr: '\\u219A',\n\tnldr: '\\u2025',\n\tnlE: '\\u2266\\u0338',\n\tnle: '\\u2270',\n\tnLeftarrow: '\\u21CD',\n\tnleftarrow: '\\u219A',\n\tnLeftrightarrow: '\\u21CE',\n\tnleftrightarrow: '\\u21AE',\n\tnleq: '\\u2270',\n\tnleqq: '\\u2266\\u0338',\n\tnleqslant: '\\u2A7D\\u0338',\n\tnles: '\\u2A7D\\u0338',\n\tnless: '\\u226E',\n\tnLl: '\\u22D8\\u0338',\n\tnlsim: '\\u2274',\n\tnLt: '\\u226A\\u20D2',\n\tnlt: '\\u226E',\n\tnltri: '\\u22EA',\n\tnltrie: '\\u22EC',\n\tnLtv: '\\u226A\\u0338',\n\tnmid: '\\u2224',\n\tNoBreak: '\\u2060',\n\tNonBreakingSpace: '\\u00A0',\n\tNopf: '\\u2115',\n\tnopf: '\\uD835\\uDD5F',\n\tNot: '\\u2AEC',\n\tnot: '\\u00AC',\n\tNotCongruent: '\\u2262',\n\tNotCupCap: '\\u226D',\n\tNotDoubleVerticalBar: '\\u2226',\n\tNotElement: '\\u2209',\n\tNotEqual: '\\u2260',\n\tNotEqualTilde: '\\u2242\\u0338',\n\tNotExists: '\\u2204',\n\tNotGreater: '\\u226F',\n\tNotGreaterEqual: '\\u2271',\n\tNotGreaterFullEqual: '\\u2267\\u0338',\n\tNotGreaterGreater: '\\u226B\\u0338',\n\tNotGreaterLess: '\\u2279',\n\tNotGreaterSlantEqual: '\\u2A7E\\u0338',\n\tNotGreaterTilde: '\\u2275',\n\tNotHumpDownHump: '\\u224E\\u0338',\n\tNotHumpEqual: '\\u224F\\u0338',\n\tnotin: '\\u2209',\n\tnotindot: '\\u22F5\\u0338',\n\tnotinE: '\\u22F9\\u0338',\n\tnotinva: '\\u2209',\n\tnotinvb: '\\u22F7',\n\tnotinvc: '\\u22F6',\n\tNotLeftTriangle: '\\u22EA',\n\tNotLeftTriangleBar: '\\u29CF\\u0338',\n\tNotLeftTriangleEqual: '\\u22EC',\n\tNotLess: '\\u226E',\n\tNotLessEqual: '\\u2270',\n\tNotLessGreater: '\\u2278',\n\tNotLessLess: '\\u226A\\u0338',\n\tNotLessSlantEqual: '\\u2A7D\\u0338',\n\tNotLessTilde: '\\u2274',\n\tNotNestedGreaterGreater: '\\u2AA2\\u0338',\n\tNotNestedLessLess: '\\u2AA1\\u0338',\n\tnotni: '\\u220C',\n\tnotniva: '\\u220C',\n\tnotnivb: '\\u22FE',\n\tnotnivc: '\\u22FD',\n\tNotPrecedes: '\\u2280',\n\tNotPrecedesEqual: '\\u2AAF\\u0338',\n\tNotPrecedesSlantEqual: '\\u22E0',\n\tNotReverseElement: '\\u220C',\n\tNotRightTriangle: '\\u22EB',\n\tNotRightTriangleBar: '\\u29D0\\u0338',\n\tNotRightTriangleEqual: '\\u22ED',\n\tNotSquareSubset: '\\u228F\\u0338',\n\tNotSquareSubsetEqual: '\\u22E2',\n\tNotSquareSuperset: '\\u2290\\u0338',\n\tNotSquareSupersetEqual: '\\u22E3',\n\tNotSubset: '\\u2282\\u20D2',\n\tNotSubsetEqual: '\\u2288',\n\tNotSucceeds: '\\u2281',\n\tNotSucceedsEqual: '\\u2AB0\\u0338',\n\tNotSucceedsSlantEqual: '\\u22E1',\n\tNotSucceedsTilde: '\\u227F\\u0338',\n\tNotSuperset: '\\u2283\\u20D2',\n\tNotSupersetEqual: '\\u2289',\n\tNotTilde: '\\u2241',\n\tNotTildeEqual: '\\u2244',\n\tNotTildeFullEqual: '\\u2247',\n\tNotTildeTilde: '\\u2249',\n\tNotVerticalBar: '\\u2224',\n\tnpar: '\\u2226',\n\tnparallel: '\\u2226',\n\tnparsl: '\\u2AFD\\u20E5',\n\tnpart: '\\u2202\\u0338',\n\tnpolint: '\\u2A14',\n\tnpr: '\\u2280',\n\tnprcue: '\\u22E0',\n\tnpre: '\\u2AAF\\u0338',\n\tnprec: '\\u2280',\n\tnpreceq: '\\u2AAF\\u0338',\n\tnrArr: '\\u21CF',\n\tnrarr: '\\u219B',\n\tnrarrc: '\\u2933\\u0338',\n\tnrarrw: '\\u219D\\u0338',\n\tnRightarrow: '\\u21CF',\n\tnrightarrow: '\\u219B',\n\tnrtri: '\\u22EB',\n\tnrtrie: '\\u22ED',\n\tnsc: '\\u2281',\n\tnsccue: '\\u22E1',\n\tnsce: '\\u2AB0\\u0338',\n\tNscr: '\\uD835\\uDCA9',\n\tnscr: '\\uD835\\uDCC3',\n\tnshortmid: '\\u2224',\n\tnshortparallel: '\\u2226',\n\tnsim: '\\u2241',\n\tnsime: '\\u2244',\n\tnsimeq: '\\u2244',\n\tnsmid: '\\u2224',\n\tnspar: '\\u2226',\n\tnsqsube: '\\u22E2',\n\tnsqsupe: '\\u22E3',\n\tnsub: '\\u2284',\n\tnsubE: '\\u2AC5\\u0338',\n\tnsube: '\\u2288',\n\tnsubset: '\\u2282\\u20D2',\n\tnsubseteq: '\\u2288',\n\tnsubseteqq: '\\u2AC5\\u0338',\n\tnsucc: '\\u2281',\n\tnsucceq: '\\u2AB0\\u0338',\n\tnsup: '\\u2285',\n\tnsupE: '\\u2AC6\\u0338',\n\tnsupe: '\\u2289',\n\tnsupset: '\\u2283\\u20D2',\n\tnsupseteq: '\\u2289',\n\tnsupseteqq: '\\u2AC6\\u0338',\n\tntgl: '\\u2279',\n\tNtilde: '\\u00D1',\n\tntilde: '\\u00F1',\n\tntlg: '\\u2278',\n\tntriangleleft: '\\u22EA',\n\tntrianglelefteq: '\\u22EC',\n\tntriangleright: '\\u22EB',\n\tntrianglerighteq: '\\u22ED',\n\tNu: '\\u039D',\n\tnu: '\\u03BD',\n\tnum: '\\u0023',\n\tnumero: '\\u2116',\n\tnumsp: '\\u2007',\n\tnvap: '\\u224D\\u20D2',\n\tnVDash: '\\u22AF',\n\tnVdash: '\\u22AE',\n\tnvDash: '\\u22AD',\n\tnvdash: '\\u22AC',\n\tnvge: '\\u2265\\u20D2',\n\tnvgt: '\\u003E\\u20D2',\n\tnvHarr: '\\u2904',\n\tnvinfin: '\\u29DE',\n\tnvlArr: '\\u2902',\n\tnvle: '\\u2264\\u20D2',\n\tnvlt: '\\u003C\\u20D2',\n\tnvltrie: '\\u22B4\\u20D2',\n\tnvrArr: '\\u2903',\n\tnvrtrie: '\\u22B5\\u20D2',\n\tnvsim: '\\u223C\\u20D2',\n\tnwarhk: '\\u2923',\n\tnwArr: '\\u21D6',\n\tnwarr: '\\u2196',\n\tnwarrow: '\\u2196',\n\tnwnear: '\\u2927',\n\tOacute: '\\u00D3',\n\toacute: '\\u00F3',\n\toast: '\\u229B',\n\tocir: '\\u229A',\n\tOcirc: '\\u00D4',\n\tocirc: '\\u00F4',\n\tOcy: '\\u041E',\n\tocy: '\\u043E',\n\todash: '\\u229D',\n\tOdblac: '\\u0150',\n\todblac: '\\u0151',\n\todiv: '\\u2A38',\n\todot: '\\u2299',\n\todsold: '\\u29BC',\n\tOElig: '\\u0152',\n\toelig: '\\u0153',\n\tofcir: '\\u29BF',\n\tOfr: '\\uD835\\uDD12',\n\tofr: '\\uD835\\uDD2C',\n\togon: '\\u02DB',\n\tOgrave: '\\u00D2',\n\tograve: '\\u00F2',\n\togt: '\\u29C1',\n\tohbar: '\\u29B5',\n\tohm: '\\u03A9',\n\toint: '\\u222E',\n\tolarr: '\\u21BA',\n\tolcir: '\\u29BE',\n\tolcross: '\\u29BB',\n\toline: '\\u203E',\n\tolt: '\\u29C0',\n\tOmacr: '\\u014C',\n\tomacr: '\\u014D',\n\tOmega: '\\u03A9',\n\tomega: '\\u03C9',\n\tOmicron: '\\u039F',\n\tomicron: '\\u03BF',\n\tomid: '\\u29B6',\n\tominus: '\\u2296',\n\tOopf: '\\uD835\\uDD46',\n\toopf: '\\uD835\\uDD60',\n\topar: '\\u29B7',\n\tOpenCurlyDoubleQuote: '\\u201C',\n\tOpenCurlyQuote: '\\u2018',\n\toperp: '\\u29B9',\n\toplus: '\\u2295',\n\tOr: '\\u2A54',\n\tor: '\\u2228',\n\torarr: '\\u21BB',\n\tord: '\\u2A5D',\n\torder: '\\u2134',\n\torderof: '\\u2134',\n\tordf: '\\u00AA',\n\tordm: '\\u00BA',\n\torigof: '\\u22B6',\n\toror: '\\u2A56',\n\torslope: '\\u2A57',\n\torv: '\\u2A5B',\n\toS: '\\u24C8',\n\tOscr: '\\uD835\\uDCAA',\n\toscr: '\\u2134',\n\tOslash: '\\u00D8',\n\toslash: '\\u00F8',\n\tosol: '\\u2298',\n\tOtilde: '\\u00D5',\n\totilde: '\\u00F5',\n\tOtimes: '\\u2A37',\n\totimes: '\\u2297',\n\totimesas: '\\u2A36',\n\tOuml: '\\u00D6',\n\touml: '\\u00F6',\n\tovbar: '\\u233D',\n\tOverBar: '\\u203E',\n\tOverBrace: '\\u23DE',\n\tOverBracket: '\\u23B4',\n\tOverParenthesis: '\\u23DC',\n\tpar: '\\u2225',\n\tpara: '\\u00B6',\n\tparallel: '\\u2225',\n\tparsim: '\\u2AF3',\n\tparsl: '\\u2AFD',\n\tpart: '\\u2202',\n\tPartialD: '\\u2202',\n\tPcy: '\\u041F',\n\tpcy: '\\u043F',\n\tpercnt: '\\u0025',\n\tperiod: '\\u002E',\n\tpermil: '\\u2030',\n\tperp: '\\u22A5',\n\tpertenk: '\\u2031',\n\tPfr: '\\uD835\\uDD13',\n\tpfr: '\\uD835\\uDD2D',\n\tPhi: '\\u03A6',\n\tphi: '\\u03C6',\n\tphiv: '\\u03D5',\n\tphmmat: '\\u2133',\n\tphone: '\\u260E',\n\tPi: '\\u03A0',\n\tpi: '\\u03C0',\n\tpitchfork: '\\u22D4',\n\tpiv: '\\u03D6',\n\tplanck: '\\u210F',\n\tplanckh: '\\u210E',\n\tplankv: '\\u210F',\n\tplus: '\\u002B',\n\tplusacir: '\\u2A23',\n\tplusb: '\\u229E',\n\tpluscir: '\\u2A22',\n\tplusdo: '\\u2214',\n\tplusdu: '\\u2A25',\n\tpluse: '\\u2A72',\n\tPlusMinus: '\\u00B1',\n\tplusmn: '\\u00B1',\n\tplussim: '\\u2A26',\n\tplustwo: '\\u2A27',\n\tpm: '\\u00B1',\n\tPoincareplane: '\\u210C',\n\tpointint: '\\u2A15',\n\tPopf: '\\u2119',\n\tpopf: '\\uD835\\uDD61',\n\tpound: '\\u00A3',\n\tPr: '\\u2ABB',\n\tpr: '\\u227A',\n\tprap: '\\u2AB7',\n\tprcue: '\\u227C',\n\tprE: '\\u2AB3',\n\tpre: '\\u2AAF',\n\tprec: '\\u227A',\n\tprecapprox: '\\u2AB7',\n\tpreccurlyeq: '\\u227C',\n\tPrecedes: '\\u227A',\n\tPrecedesEqual: '\\u2AAF',\n\tPrecedesSlantEqual: '\\u227C',\n\tPrecedesTilde: '\\u227E',\n\tpreceq: '\\u2AAF',\n\tprecnapprox: '\\u2AB9',\n\tprecneqq: '\\u2AB5',\n\tprecnsim: '\\u22E8',\n\tprecsim: '\\u227E',\n\tPrime: '\\u2033',\n\tprime: '\\u2032',\n\tprimes: '\\u2119',\n\tprnap: '\\u2AB9',\n\tprnE: '\\u2AB5',\n\tprnsim: '\\u22E8',\n\tprod: '\\u220F',\n\tProduct: '\\u220F',\n\tprofalar: '\\u232E',\n\tprofline: '\\u2312',\n\tprofsurf: '\\u2313',\n\tprop: '\\u221D',\n\tProportion: '\\u2237',\n\tProportional: '\\u221D',\n\tpropto: '\\u221D',\n\tprsim: '\\u227E',\n\tprurel: '\\u22B0',\n\tPscr: '\\uD835\\uDCAB',\n\tpscr: '\\uD835\\uDCC5',\n\tPsi: '\\u03A8',\n\tpsi: '\\u03C8',\n\tpuncsp: '\\u2008',\n\tQfr: '\\uD835\\uDD14',\n\tqfr: '\\uD835\\uDD2E',\n\tqint: '\\u2A0C',\n\tQopf: '\\u211A',\n\tqopf: '\\uD835\\uDD62',\n\tqprime: '\\u2057',\n\tQscr: '\\uD835\\uDCAC',\n\tqscr: '\\uD835\\uDCC6',\n\tquaternions: '\\u210D',\n\tquatint: '\\u2A16',\n\tquest: '\\u003F',\n\tquesteq: '\\u225F',\n\tQUOT: '\\u0022',\n\tquot: '\\u0022',\n\trAarr: '\\u21DB',\n\trace: '\\u223D\\u0331',\n\tRacute: '\\u0154',\n\tracute: '\\u0155',\n\tradic: '\\u221A',\n\traemptyv: '\\u29B3',\n\tRang: '\\u27EB',\n\trang: '\\u27E9',\n\trangd: '\\u2992',\n\trange: '\\u29A5',\n\trangle: '\\u27E9',\n\traquo: '\\u00BB',\n\tRarr: '\\u21A0',\n\trArr: '\\u21D2',\n\trarr: '\\u2192',\n\trarrap: '\\u2975',\n\trarrb: '\\u21E5',\n\trarrbfs: '\\u2920',\n\trarrc: '\\u2933',\n\trarrfs: '\\u291E',\n\trarrhk: '\\u21AA',\n\trarrlp: '\\u21AC',\n\trarrpl: '\\u2945',\n\trarrsim: '\\u2974',\n\tRarrtl: '\\u2916',\n\trarrtl: '\\u21A3',\n\trarrw: '\\u219D',\n\trAtail: '\\u291C',\n\tratail: '\\u291A',\n\tratio: '\\u2236',\n\trationals: '\\u211A',\n\tRBarr: '\\u2910',\n\trBarr: '\\u290F',\n\trbarr: '\\u290D',\n\trbbrk: '\\u2773',\n\trbrace: '\\u007D',\n\trbrack: '\\u005D',\n\trbrke: '\\u298C',\n\trbrksld: '\\u298E',\n\trbrkslu: '\\u2990',\n\tRcaron: '\\u0158',\n\trcaron: '\\u0159',\n\tRcedil: '\\u0156',\n\trcedil: '\\u0157',\n\trceil: '\\u2309',\n\trcub: '\\u007D',\n\tRcy: '\\u0420',\n\trcy: '\\u0440',\n\trdca: '\\u2937',\n\trdldhar: '\\u2969',\n\trdquo: '\\u201D',\n\trdquor: '\\u201D',\n\trdsh: '\\u21B3',\n\tRe: '\\u211C',\n\treal: '\\u211C',\n\trealine: '\\u211B',\n\trealpart: '\\u211C',\n\treals: '\\u211D',\n\trect: '\\u25AD',\n\tREG: '\\u00AE',\n\treg: '\\u00AE',\n\tReverseElement: '\\u220B',\n\tReverseEquilibrium: '\\u21CB',\n\tReverseUpEquilibrium: '\\u296F',\n\trfisht: '\\u297D',\n\trfloor: '\\u230B',\n\tRfr: '\\u211C',\n\trfr: '\\uD835\\uDD2F',\n\trHar: '\\u2964',\n\trhard: '\\u21C1',\n\trharu: '\\u21C0',\n\trharul: '\\u296C',\n\tRho: '\\u03A1',\n\trho: '\\u03C1',\n\trhov: '\\u03F1',\n\tRightAngleBracket: '\\u27E9',\n\tRightArrow: '\\u2192',\n\tRightarrow: '\\u21D2',\n\trightarrow: '\\u2192',\n\tRightArrowBar: '\\u21E5',\n\tRightArrowLeftArrow: '\\u21C4',\n\trightarrowtail: '\\u21A3',\n\tRightCeiling: '\\u2309',\n\tRightDoubleBracket: '\\u27E7',\n\tRightDownTeeVector: '\\u295D',\n\tRightDownVector: '\\u21C2',\n\tRightDownVectorBar: '\\u2955',\n\tRightFloor: '\\u230B',\n\trightharpoondown: '\\u21C1',\n\trightharpoonup: '\\u21C0',\n\trightleftarrows: '\\u21C4',\n\trightleftharpoons: '\\u21CC',\n\trightrightarrows: '\\u21C9',\n\trightsquigarrow: '\\u219D',\n\tRightTee: '\\u22A2',\n\tRightTeeArrow: '\\u21A6',\n\tRightTeeVector: '\\u295B',\n\trightthreetimes: '\\u22CC',\n\tRightTriangle: '\\u22B3',\n\tRightTriangleBar: '\\u29D0',\n\tRightTriangleEqual: '\\u22B5',\n\tRightUpDownVector: '\\u294F',\n\tRightUpTeeVector: '\\u295C',\n\tRightUpVector: '\\u21BE',\n\tRightUpVectorBar: '\\u2954',\n\tRightVector: '\\u21C0',\n\tRightVectorBar: '\\u2953',\n\tring: '\\u02DA',\n\trisingdotseq: '\\u2253',\n\trlarr: '\\u21C4',\n\trlhar: '\\u21CC',\n\trlm: '\\u200F',\n\trmoust: '\\u23B1',\n\trmoustache: '\\u23B1',\n\trnmid: '\\u2AEE',\n\troang: '\\u27ED',\n\troarr: '\\u21FE',\n\trobrk: '\\u27E7',\n\tropar: '\\u2986',\n\tRopf: '\\u211D',\n\tropf: '\\uD835\\uDD63',\n\troplus: '\\u2A2E',\n\trotimes: '\\u2A35',\n\tRoundImplies: '\\u2970',\n\trpar: '\\u0029',\n\trpargt: '\\u2994',\n\trppolint: '\\u2A12',\n\trrarr: '\\u21C9',\n\tRrightarrow: '\\u21DB',\n\trsaquo: '\\u203A',\n\tRscr: '\\u211B',\n\trscr: '\\uD835\\uDCC7',\n\tRsh: '\\u21B1',\n\trsh: '\\u21B1',\n\trsqb: '\\u005D',\n\trsquo: '\\u2019',\n\trsquor: '\\u2019',\n\trthree: '\\u22CC',\n\trtimes: '\\u22CA',\n\trtri: '\\u25B9',\n\trtrie: '\\u22B5',\n\trtrif: '\\u25B8',\n\trtriltri: '\\u29CE',\n\tRuleDelayed: '\\u29F4',\n\truluhar: '\\u2968',\n\trx: '\\u211E',\n\tSacute: '\\u015A',\n\tsacute: '\\u015B',\n\tsbquo: '\\u201A',\n\tSc: '\\u2ABC',\n\tsc: '\\u227B',\n\tscap: '\\u2AB8',\n\tScaron: '\\u0160',\n\tscaron: '\\u0161',\n\tsccue: '\\u227D',\n\tscE: '\\u2AB4',\n\tsce: '\\u2AB0',\n\tScedil: '\\u015E',\n\tscedil: '\\u015F',\n\tScirc: '\\u015C',\n\tscirc: '\\u015D',\n\tscnap: '\\u2ABA',\n\tscnE: '\\u2AB6',\n\tscnsim: '\\u22E9',\n\tscpolint: '\\u2A13',\n\tscsim: '\\u227F',\n\tScy: '\\u0421',\n\tscy: '\\u0441',\n\tsdot: '\\u22C5',\n\tsdotb: '\\u22A1',\n\tsdote: '\\u2A66',\n\tsearhk: '\\u2925',\n\tseArr: '\\u21D8',\n\tsearr: '\\u2198',\n\tsearrow: '\\u2198',\n\tsect: '\\u00A7',\n\tsemi: '\\u003B',\n\tseswar: '\\u2929',\n\tsetminus: '\\u2216',\n\tsetmn: '\\u2216',\n\tsext: '\\u2736',\n\tSfr: '\\uD835\\uDD16',\n\tsfr: '\\uD835\\uDD30',\n\tsfrown: '\\u2322',\n\tsharp: '\\u266F',\n\tSHCHcy: '\\u0429',\n\tshchcy: '\\u0449',\n\tSHcy: '\\u0428',\n\tshcy: '\\u0448',\n\tShortDownArrow: '\\u2193',\n\tShortLeftArrow: '\\u2190',\n\tshortmid: '\\u2223',\n\tshortparallel: '\\u2225',\n\tShortRightArrow: '\\u2192',\n\tShortUpArrow: '\\u2191',\n\tshy: '\\u00AD',\n\tSigma: '\\u03A3',\n\tsigma: '\\u03C3',\n\tsigmaf: '\\u03C2',\n\tsigmav: '\\u03C2',\n\tsim: '\\u223C',\n\tsimdot: '\\u2A6A',\n\tsime: '\\u2243',\n\tsimeq: '\\u2243',\n\tsimg: '\\u2A9E',\n\tsimgE: '\\u2AA0',\n\tsiml: '\\u2A9D',\n\tsimlE: '\\u2A9F',\n\tsimne: '\\u2246',\n\tsimplus: '\\u2A24',\n\tsimrarr: '\\u2972',\n\tslarr: '\\u2190',\n\tSmallCircle: '\\u2218',\n\tsmallsetminus: '\\u2216',\n\tsmashp: '\\u2A33',\n\tsmeparsl: '\\u29E4',\n\tsmid: '\\u2223',\n\tsmile: '\\u2323',\n\tsmt: '\\u2AAA',\n\tsmte: '\\u2AAC',\n\tsmtes: '\\u2AAC\\uFE00',\n\tSOFTcy: '\\u042C',\n\tsoftcy: '\\u044C',\n\tsol: '\\u002F',\n\tsolb: '\\u29C4',\n\tsolbar: '\\u233F',\n\tSopf: '\\uD835\\uDD4A',\n\tsopf: '\\uD835\\uDD64',\n\tspades: '\\u2660',\n\tspadesuit: '\\u2660',\n\tspar: '\\u2225',\n\tsqcap: '\\u2293',\n\tsqcaps: '\\u2293\\uFE00',\n\tsqcup: '\\u2294',\n\tsqcups: '\\u2294\\uFE00',\n\tSqrt: '\\u221A',\n\tsqsub: '\\u228F',\n\tsqsube: '\\u2291',\n\tsqsubset: '\\u228F',\n\tsqsubseteq: '\\u2291',\n\tsqsup: '\\u2290',\n\tsqsupe: '\\u2292',\n\tsqsupset: '\\u2290',\n\tsqsupseteq: '\\u2292',\n\tsqu: '\\u25A1',\n\tSquare: '\\u25A1',\n\tsquare: '\\u25A1',\n\tSquareIntersection: '\\u2293',\n\tSquareSubset: '\\u228F',\n\tSquareSubsetEqual: '\\u2291',\n\tSquareSuperset: '\\u2290',\n\tSquareSupersetEqual: '\\u2292',\n\tSquareUnion: '\\u2294',\n\tsquarf: '\\u25AA',\n\tsquf: '\\u25AA',\n\tsrarr: '\\u2192',\n\tSscr: '\\uD835\\uDCAE',\n\tsscr: '\\uD835\\uDCC8',\n\tssetmn: '\\u2216',\n\tssmile: '\\u2323',\n\tsstarf: '\\u22C6',\n\tStar: '\\u22C6',\n\tstar: '\\u2606',\n\tstarf: '\\u2605',\n\tstraightepsilon: '\\u03F5',\n\tstraightphi: '\\u03D5',\n\tstrns: '\\u00AF',\n\tSub: '\\u22D0',\n\tsub: '\\u2282',\n\tsubdot: '\\u2ABD',\n\tsubE: '\\u2AC5',\n\tsube: '\\u2286',\n\tsubedot: '\\u2AC3',\n\tsubmult: '\\u2AC1',\n\tsubnE: '\\u2ACB',\n\tsubne: '\\u228A',\n\tsubplus: '\\u2ABF',\n\tsubrarr: '\\u2979',\n\tSubset: '\\u22D0',\n\tsubset: '\\u2282',\n\tsubseteq: '\\u2286',\n\tsubseteqq: '\\u2AC5',\n\tSubsetEqual: '\\u2286',\n\tsubsetneq: '\\u228A',\n\tsubsetneqq: '\\u2ACB',\n\tsubsim: '\\u2AC7',\n\tsubsub: '\\u2AD5',\n\tsubsup: '\\u2AD3',\n\tsucc: '\\u227B',\n\tsuccapprox: '\\u2AB8',\n\tsucccurlyeq: '\\u227D',\n\tSucceeds: '\\u227B',\n\tSucceedsEqual: '\\u2AB0',\n\tSucceedsSlantEqual: '\\u227D',\n\tSucceedsTilde: '\\u227F',\n\tsucceq: '\\u2AB0',\n\tsuccnapprox: '\\u2ABA',\n\tsuccneqq: '\\u2AB6',\n\tsuccnsim: '\\u22E9',\n\tsuccsim: '\\u227F',\n\tSuchThat: '\\u220B',\n\tSum: '\\u2211',\n\tsum: '\\u2211',\n\tsung: '\\u266A',\n\tSup: '\\u22D1',\n\tsup: '\\u2283',\n\tsup1: '\\u00B9',\n\tsup2: '\\u00B2',\n\tsup3: '\\u00B3',\n\tsupdot: '\\u2ABE',\n\tsupdsub: '\\u2AD8',\n\tsupE: '\\u2AC6',\n\tsupe: '\\u2287',\n\tsupedot: '\\u2AC4',\n\tSuperset: '\\u2283',\n\tSupersetEqual: '\\u2287',\n\tsuphsol: '\\u27C9',\n\tsuphsub: '\\u2AD7',\n\tsuplarr: '\\u297B',\n\tsupmult: '\\u2AC2',\n\tsupnE: '\\u2ACC',\n\tsupne: '\\u228B',\n\tsupplus: '\\u2AC0',\n\tSupset: '\\u22D1',\n\tsupset: '\\u2283',\n\tsupseteq: '\\u2287',\n\tsupseteqq: '\\u2AC6',\n\tsupsetneq: '\\u228B',\n\tsupsetneqq: '\\u2ACC',\n\tsupsim: '\\u2AC8',\n\tsupsub: '\\u2AD4',\n\tsupsup: '\\u2AD6',\n\tswarhk: '\\u2926',\n\tswArr: '\\u21D9',\n\tswarr: '\\u2199',\n\tswarrow: '\\u2199',\n\tswnwar: '\\u292A',\n\tszlig: '\\u00DF',\n\tTab: '\\u0009',\n\ttarget: '\\u2316',\n\tTau: '\\u03A4',\n\ttau: '\\u03C4',\n\ttbrk: '\\u23B4',\n\tTcaron: '\\u0164',\n\ttcaron: '\\u0165',\n\tTcedil: '\\u0162',\n\ttcedil: '\\u0163',\n\tTcy: '\\u0422',\n\ttcy: '\\u0442',\n\ttdot: '\\u20DB',\n\ttelrec: '\\u2315',\n\tTfr: '\\uD835\\uDD17',\n\ttfr: '\\uD835\\uDD31',\n\tthere4: '\\u2234',\n\tTherefore: '\\u2234',\n\ttherefore: '\\u2234',\n\tTheta: '\\u0398',\n\ttheta: '\\u03B8',\n\tthetasym: '\\u03D1',\n\tthetav: '\\u03D1',\n\tthickapprox: '\\u2248',\n\tthicksim: '\\u223C',\n\tThickSpace: '\\u205F\\u200A',\n\tthinsp: '\\u2009',\n\tThinSpace: '\\u2009',\n\tthkap: '\\u2248',\n\tthksim: '\\u223C',\n\tTHORN: '\\u00DE',\n\tthorn: '\\u00FE',\n\tTilde: '\\u223C',\n\ttilde: '\\u02DC',\n\tTildeEqual: '\\u2243',\n\tTildeFullEqual: '\\u2245',\n\tTildeTilde: '\\u2248',\n\ttimes: '\\u00D7',\n\ttimesb: '\\u22A0',\n\ttimesbar: '\\u2A31',\n\ttimesd: '\\u2A30',\n\ttint: '\\u222D',\n\ttoea: '\\u2928',\n\ttop: '\\u22A4',\n\ttopbot: '\\u2336',\n\ttopcir: '\\u2AF1',\n\tTopf: '\\uD835\\uDD4B',\n\ttopf: '\\uD835\\uDD65',\n\ttopfork: '\\u2ADA',\n\ttosa: '\\u2929',\n\ttprime: '\\u2034',\n\tTRADE: '\\u2122',\n\ttrade: '\\u2122',\n\ttriangle: '\\u25B5',\n\ttriangledown: '\\u25BF',\n\ttriangleleft: '\\u25C3',\n\ttrianglelefteq: '\\u22B4',\n\ttriangleq: '\\u225C',\n\ttriangleright: '\\u25B9',\n\ttrianglerighteq: '\\u22B5',\n\ttridot: '\\u25EC',\n\ttrie: '\\u225C',\n\ttriminus: '\\u2A3A',\n\tTripleDot: '\\u20DB',\n\ttriplus: '\\u2A39',\n\ttrisb: '\\u29CD',\n\ttritime: '\\u2A3B',\n\ttrpezium: '\\u23E2',\n\tTscr: '\\uD835\\uDCAF',\n\ttscr: '\\uD835\\uDCC9',\n\tTScy: '\\u0426',\n\ttscy: '\\u0446',\n\tTSHcy: '\\u040B',\n\ttshcy: '\\u045B',\n\tTstrok: '\\u0166',\n\ttstrok: '\\u0167',\n\ttwixt: '\\u226C',\n\ttwoheadleftarrow: '\\u219E',\n\ttwoheadrightarrow: '\\u21A0',\n\tUacute: '\\u00DA',\n\tuacute: '\\u00FA',\n\tUarr: '\\u219F',\n\tuArr: '\\u21D1',\n\tuarr: '\\u2191',\n\tUarrocir: '\\u2949',\n\tUbrcy: '\\u040E',\n\tubrcy: '\\u045E',\n\tUbreve: '\\u016C',\n\tubreve: '\\u016D',\n\tUcirc: '\\u00DB',\n\tucirc: '\\u00FB',\n\tUcy: '\\u0423',\n\tucy: '\\u0443',\n\tudarr: '\\u21C5',\n\tUdblac: '\\u0170',\n\tudblac: '\\u0171',\n\tudhar: '\\u296E',\n\tufisht: '\\u297E',\n\tUfr: '\\uD835\\uDD18',\n\tufr: '\\uD835\\uDD32',\n\tUgrave: '\\u00D9',\n\tugrave: '\\u00F9',\n\tuHar: '\\u2963',\n\tuharl: '\\u21BF',\n\tuharr: '\\u21BE',\n\tuhblk: '\\u2580',\n\tulcorn: '\\u231C',\n\tulcorner: '\\u231C',\n\tulcrop: '\\u230F',\n\tultri: '\\u25F8',\n\tUmacr: '\\u016A',\n\tumacr: '\\u016B',\n\tuml: '\\u00A8',\n\tUnderBar: '\\u005F',\n\tUnderBrace: '\\u23DF',\n\tUnderBracket: '\\u23B5',\n\tUnderParenthesis: '\\u23DD',\n\tUnion: '\\u22C3',\n\tUnionPlus: '\\u228E',\n\tUogon: '\\u0172',\n\tuogon: '\\u0173',\n\tUopf: '\\uD835\\uDD4C',\n\tuopf: '\\uD835\\uDD66',\n\tUpArrow: '\\u2191',\n\tUparrow: '\\u21D1',\n\tuparrow: '\\u2191',\n\tUpArrowBar: '\\u2912',\n\tUpArrowDownArrow: '\\u21C5',\n\tUpDownArrow: '\\u2195',\n\tUpdownarrow: '\\u21D5',\n\tupdownarrow: '\\u2195',\n\tUpEquilibrium: '\\u296E',\n\tupharpoonleft: '\\u21BF',\n\tupharpoonright: '\\u21BE',\n\tuplus: '\\u228E',\n\tUpperLeftArrow: '\\u2196',\n\tUpperRightArrow: '\\u2197',\n\tUpsi: '\\u03D2',\n\tupsi: '\\u03C5',\n\tupsih: '\\u03D2',\n\tUpsilon: '\\u03A5',\n\tupsilon: '\\u03C5',\n\tUpTee: '\\u22A5',\n\tUpTeeArrow: '\\u21A5',\n\tupuparrows: '\\u21C8',\n\turcorn: '\\u231D',\n\turcorner: '\\u231D',\n\turcrop: '\\u230E',\n\tUring: '\\u016E',\n\turing: '\\u016F',\n\turtri: '\\u25F9',\n\tUscr: '\\uD835\\uDCB0',\n\tuscr: '\\uD835\\uDCCA',\n\tutdot: '\\u22F0',\n\tUtilde: '\\u0168',\n\tutilde: '\\u0169',\n\tutri: '\\u25B5',\n\tutrif: '\\u25B4',\n\tuuarr: '\\u21C8',\n\tUuml: '\\u00DC',\n\tuuml: '\\u00FC',\n\tuwangle: '\\u29A7',\n\tvangrt: '\\u299C',\n\tvarepsilon: '\\u03F5',\n\tvarkappa: '\\u03F0',\n\tvarnothing: '\\u2205',\n\tvarphi: '\\u03D5',\n\tvarpi: '\\u03D6',\n\tvarpropto: '\\u221D',\n\tvArr: '\\u21D5',\n\tvarr: '\\u2195',\n\tvarrho: '\\u03F1',\n\tvarsigma: '\\u03C2',\n\tvarsubsetneq: '\\u228A\\uFE00',\n\tvarsubsetneqq: '\\u2ACB\\uFE00',\n\tvarsupsetneq: '\\u228B\\uFE00',\n\tvarsupsetneqq: '\\u2ACC\\uFE00',\n\tvartheta: '\\u03D1',\n\tvartriangleleft: '\\u22B2',\n\tvartriangleright: '\\u22B3',\n\tVbar: '\\u2AEB',\n\tvBar: '\\u2AE8',\n\tvBarv: '\\u2AE9',\n\tVcy: '\\u0412',\n\tvcy: '\\u0432',\n\tVDash: '\\u22AB',\n\tVdash: '\\u22A9',\n\tvDash: '\\u22A8',\n\tvdash: '\\u22A2',\n\tVdashl: '\\u2AE6',\n\tVee: '\\u22C1',\n\tvee: '\\u2228',\n\tveebar: '\\u22BB',\n\tveeeq: '\\u225A',\n\tvellip: '\\u22EE',\n\tVerbar: '\\u2016',\n\tverbar: '\\u007C',\n\tVert: '\\u2016',\n\tvert: '\\u007C',\n\tVerticalBar: '\\u2223',\n\tVerticalLine: '\\u007C',\n\tVerticalSeparator: '\\u2758',\n\tVerticalTilde: '\\u2240',\n\tVeryThinSpace: '\\u200A',\n\tVfr: '\\uD835\\uDD19',\n\tvfr: '\\uD835\\uDD33',\n\tvltri: '\\u22B2',\n\tvnsub: '\\u2282\\u20D2',\n\tvnsup: '\\u2283\\u20D2',\n\tVopf: '\\uD835\\uDD4D',\n\tvopf: '\\uD835\\uDD67',\n\tvprop: '\\u221D',\n\tvrtri: '\\u22B3',\n\tVscr: '\\uD835\\uDCB1',\n\tvscr: '\\uD835\\uDCCB',\n\tvsubnE: '\\u2ACB\\uFE00',\n\tvsubne: '\\u228A\\uFE00',\n\tvsupnE: '\\u2ACC\\uFE00',\n\tvsupne: '\\u228B\\uFE00',\n\tVvdash: '\\u22AA',\n\tvzigzag: '\\u299A',\n\tWcirc: '\\u0174',\n\twcirc: '\\u0175',\n\twedbar: '\\u2A5F',\n\tWedge: '\\u22C0',\n\twedge: '\\u2227',\n\twedgeq: '\\u2259',\n\tweierp: '\\u2118',\n\tWfr: '\\uD835\\uDD1A',\n\twfr: '\\uD835\\uDD34',\n\tWopf: '\\uD835\\uDD4E',\n\twopf: '\\uD835\\uDD68',\n\twp: '\\u2118',\n\twr: '\\u2240',\n\twreath: '\\u2240',\n\tWscr: '\\uD835\\uDCB2',\n\twscr: '\\uD835\\uDCCC',\n\txcap: '\\u22C2',\n\txcirc: '\\u25EF',\n\txcup: '\\u22C3',\n\txdtri: '\\u25BD',\n\tXfr: '\\uD835\\uDD1B',\n\txfr: '\\uD835\\uDD35',\n\txhArr: '\\u27FA',\n\txharr: '\\u27F7',\n\tXi: '\\u039E',\n\txi: '\\u03BE',\n\txlArr: '\\u27F8',\n\txlarr: '\\u27F5',\n\txmap: '\\u27FC',\n\txnis: '\\u22FB',\n\txodot: '\\u2A00',\n\tXopf: '\\uD835\\uDD4F',\n\txopf: '\\uD835\\uDD69',\n\txoplus: '\\u2A01',\n\txotime: '\\u2A02',\n\txrArr: '\\u27F9',\n\txrarr: '\\u27F6',\n\tXscr: '\\uD835\\uDCB3',\n\txscr: '\\uD835\\uDCCD',\n\txsqcup: '\\u2A06',\n\txuplus: '\\u2A04',\n\txutri: '\\u25B3',\n\txvee: '\\u22C1',\n\txwedge: '\\u22C0',\n\tYacute: '\\u00DD',\n\tyacute: '\\u00FD',\n\tYAcy: '\\u042F',\n\tyacy: '\\u044F',\n\tYcirc: '\\u0176',\n\tycirc: '\\u0177',\n\tYcy: '\\u042B',\n\tycy: '\\u044B',\n\tyen: '\\u00A5',\n\tYfr: '\\uD835\\uDD1C',\n\tyfr: '\\uD835\\uDD36',\n\tYIcy: '\\u0407',\n\tyicy: '\\u0457',\n\tYopf: '\\uD835\\uDD50',\n\tyopf: '\\uD835\\uDD6A',\n\tYscr: '\\uD835\\uDCB4',\n\tyscr: '\\uD835\\uDCCE',\n\tYUcy: '\\u042E',\n\tyucy: '\\u044E',\n\tYuml: '\\u0178',\n\tyuml: '\\u00FF',\n\tZacute: '\\u0179',\n\tzacute: '\\u017A',\n\tZcaron: '\\u017D',\n\tzcaron: '\\u017E',\n\tZcy: '\\u0417',\n\tzcy: '\\u0437',\n\tZdot: '\\u017B',\n\tzdot: '\\u017C',\n\tzeetrf: '\\u2128',\n\tZeroWidthSpace: '\\u200B',\n\tZeta: '\\u0396',\n\tzeta: '\\u03B6',\n\tZfr: '\\u2128',\n\tzfr: '\\uD835\\uDD37',\n\tZHcy: '\\u0416',\n\tzhcy: '\\u0436',\n\tzigrarr: '\\u21DD',\n\tZopf: '\\u2124',\n\tzopf: '\\uD835\\uDD6B',\n\tZscr: '\\uD835\\uDCB5',\n\tzscr: '\\uD835\\uDCCF',\n\tzwj: '\\u200D',\n\tzwnj: '\\u200C',\n});\n\n/**\n * @deprecated use `HTML_ENTITIES` instead\n * @see HTML_ENTITIES\n */\nexports.entityMap = exports.HTML_ENTITIES;\n","var baseTrim = require('./_baseTrim'),\n    isObject = require('./isObject'),\n    isSymbol = require('./isSymbol');\n\n/** Used as references for various `Number` constants. */\nvar NAN = 0 / 0;\n\n/** Used to detect bad signed hexadecimal string values. */\nvar reIsBadHex = /^[-+]0x[0-9a-f]+$/i;\n\n/** Used to detect binary string values. */\nvar reIsBinary = /^0b[01]+$/i;\n\n/** Used to detect octal string values. */\nvar reIsOctal = /^0o[0-7]+$/i;\n\n/** Built-in method references without a dependency on `root`. */\nvar freeParseInt = parseInt;\n\n/**\n * Converts `value` to a number.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Lang\n * @param {*} value The value to process.\n * @returns {number} Returns the number.\n * @example\n *\n * _.toNumber(3.2);\n * // => 3.2\n *\n * _.toNumber(Number.MIN_VALUE);\n * // => 5e-324\n *\n * _.toNumber(Infinity);\n * // => Infinity\n *\n * _.toNumber('3.2');\n * // => 3.2\n */\nfunction toNumber(value) {\n  if (typeof value == 'number') {\n    return value;\n  }\n  if (isSymbol(value)) {\n    return NAN;\n  }\n  if (isObject(value)) {\n    var other = typeof value.valueOf == 'function' ? value.valueOf() : value;\n    value = isObject(other) ? (other + '') : other;\n  }\n  if (typeof value != 'string') {\n    return value === 0 ? value : +value;\n  }\n  value = baseTrim(value);\n  var isBinary = reIsBinary.test(value);\n  return (isBinary || reIsOctal.test(value))\n    ? freeParseInt(value.slice(2), isBinary ? 2 : 8)\n    : (reIsBadHex.test(value) ? NAN : +value);\n}\n\nmodule.exports = toNumber;\n","/*!\n * The buffer module from node.js, for the browser.\n *\n * @author   Feross Aboukhadijeh <http://feross.org>\n * @license  MIT\n */\n/* eslint-disable no-proto */\n\n'use strict'\n\nvar base64 = require('base64-js')\nvar ieee754 = require('ieee754')\nvar isArray = require('isarray')\n\nexports.Buffer = Buffer\nexports.SlowBuffer = SlowBuffer\nexports.INSPECT_MAX_BYTES = 50\n\n/**\n * If `Buffer.TYPED_ARRAY_SUPPORT`:\n *   === true    Use Uint8Array implementation (fastest)\n *   === false   Use Object implementation (most compatible, even IE6)\n *\n * Browsers that support typed arrays are IE 10+, Firefox 4+, Chrome 7+, Safari 5.1+,\n * Opera 11.6+, iOS 4.2+.\n *\n * Due to various browser bugs, sometimes the Object implementation will be used even\n * when the browser supports typed arrays.\n *\n * Note:\n *\n *   - Firefox 4-29 lacks support for adding new properties to `Uint8Array` instances,\n *     See: https://bugzilla.mozilla.org/show_bug.cgi?id=695438.\n *\n *   - Chrome 9-10 is missing the `TypedArray.prototype.subarray` function.\n *\n *   - IE10 has a broken `TypedArray.prototype.subarray` function which returns arrays of\n *     incorrect length in some situations.\n\n * We detect these buggy browsers and set `Buffer.TYPED_ARRAY_SUPPORT` to `false` so they\n * get the Object implementation, which is slower but behaves correctly.\n */\nBuffer.TYPED_ARRAY_SUPPORT = global.TYPED_ARRAY_SUPPORT !== undefined\n  ? global.TYPED_ARRAY_SUPPORT\n  : typedArraySupport()\n\n/*\n * Export kMaxLength after typed array support is determined.\n */\nexports.kMaxLength = kMaxLength()\n\nfunction typedArraySupport () {\n  try {\n    var arr = new Uint8Array(1)\n    arr.__proto__ = {__proto__: Uint8Array.prototype, foo: function () { return 42 }}\n    return arr.foo() === 42 && // typed array instances can be augmented\n        typeof arr.subarray === 'function' && // chrome 9-10 lack `subarray`\n        arr.subarray(1, 1).byteLength === 0 // ie10 has broken `subarray`\n  } catch (e) {\n    return false\n  }\n}\n\nfunction kMaxLength () {\n  return Buffer.TYPED_ARRAY_SUPPORT\n    ? 0x7fffffff\n    : 0x3fffffff\n}\n\nfunction createBuffer (that, length) {\n  if (kMaxLength() < length) {\n    throw new RangeError('Invalid typed array length')\n  }\n  if (Buffer.TYPED_ARRAY_SUPPORT) {\n    // Return an augmented `Uint8Array` instance, for best performance\n    that = new Uint8Array(length)\n    that.__proto__ = Buffer.prototype\n  } else {\n    // Fallback: Return an object instance of the Buffer class\n    if (that === null) {\n      that = new Buffer(length)\n    }\n    that.length = length\n  }\n\n  return that\n}\n\n/**\n * The Buffer constructor returns instances of `Uint8Array` that have their\n * prototype changed to `Buffer.prototype`. Furthermore, `Buffer` is a subclass of\n * `Uint8Array`, so the returned instances will have all the node `Buffer` methods\n * and the `Uint8Array` methods. Square bracket notation works as expected -- it\n * returns a single octet.\n *\n * The `Uint8Array` prototype remains unmodified.\n */\n\nfunction Buffer (arg, encodingOrOffset, length) {\n  if (!Buffer.TYPED_ARRAY_SUPPORT && !(this instanceof Buffer)) {\n    return new Buffer(arg, encodingOrOffset, length)\n  }\n\n  // Common case.\n  if (typeof arg === 'number') {\n    if (typeof encodingOrOffset === 'string') {\n      throw new Error(\n        'If encoding is specified then the first argument must be a string'\n      )\n    }\n    return allocUnsafe(this, arg)\n  }\n  return from(this, arg, encodingOrOffset, length)\n}\n\nBuffer.poolSize = 8192 // not used by this implementation\n\n// TODO: Legacy, not needed anymore. Remove in next major version.\nBuffer._augment = function (arr) {\n  arr.__proto__ = Buffer.prototype\n  return arr\n}\n\nfunction from (that, value, encodingOrOffset, length) {\n  if (typeof value === 'number') {\n    throw new TypeError('\"value\" argument must not be a number')\n  }\n\n  if (typeof ArrayBuffer !== 'undefined' && value instanceof ArrayBuffer) {\n    return fromArrayBuffer(that, value, encodingOrOffset, length)\n  }\n\n  if (typeof value === 'string') {\n    return fromString(that, value, encodingOrOffset)\n  }\n\n  return fromObject(that, value)\n}\n\n/**\n * Functionally equivalent to Buffer(arg, encoding) but throws a TypeError\n * if value is a number.\n * Buffer.from(str[, encoding])\n * Buffer.from(array)\n * Buffer.from(buffer)\n * Buffer.from(arrayBuffer[, byteOffset[, length]])\n **/\nBuffer.from = function (value, encodingOrOffset, length) {\n  return from(null, value, encodingOrOffset, length)\n}\n\nif (Buffer.TYPED_ARRAY_SUPPORT) {\n  Buffer.prototype.__proto__ = Uint8Array.prototype\n  Buffer.__proto__ = Uint8Array\n  if (typeof Symbol !== 'undefined' && Symbol.species &&\n      Buffer[Symbol.species] === Buffer) {\n    // Fix subarray() in ES2016. See: https://github.com/feross/buffer/pull/97\n    Object.defineProperty(Buffer, Symbol.species, {\n      value: null,\n      configurable: true\n    })\n  }\n}\n\nfunction assertSize (size) {\n  if (typeof size !== 'number') {\n    throw new TypeError('\"size\" argument must be a number')\n  } else if (size < 0) {\n    throw new RangeError('\"size\" argument must not be negative')\n  }\n}\n\nfunction alloc (that, size, fill, encoding) {\n  assertSize(size)\n  if (size <= 0) {\n    return createBuffer(that, size)\n  }\n  if (fill !== undefined) {\n    // Only pay attention to encoding if it's a string. This\n    // prevents accidentally sending in a number that would\n    // be interpretted as a start offset.\n    return typeof encoding === 'string'\n      ? createBuffer(that, size).fill(fill, encoding)\n      : createBuffer(that, size).fill(fill)\n  }\n  return createBuffer(that, size)\n}\n\n/**\n * Creates a new filled Buffer instance.\n * alloc(size[, fill[, encoding]])\n **/\nBuffer.alloc = function (size, fill, encoding) {\n  return alloc(null, size, fill, encoding)\n}\n\nfunction allocUnsafe (that, size) {\n  assertSize(size)\n  that = createBuffer(that, size < 0 ? 0 : checked(size) | 0)\n  if (!Buffer.TYPED_ARRAY_SUPPORT) {\n    for (var i = 0; i < size; ++i) {\n      that[i] = 0\n    }\n  }\n  return that\n}\n\n/**\n * Equivalent to Buffer(num), by default creates a non-zero-filled Buffer instance.\n * */\nBuffer.allocUnsafe = function (size) {\n  return allocUnsafe(null, size)\n}\n/**\n * Equivalent to SlowBuffer(num), by default creates a non-zero-filled Buffer instance.\n */\nBuffer.allocUnsafeSlow = function (size) {\n  return allocUnsafe(null, size)\n}\n\nfunction fromString (that, string, encoding) {\n  if (typeof encoding !== 'string' || encoding === '') {\n    encoding = 'utf8'\n  }\n\n  if (!Buffer.isEncoding(encoding)) {\n    throw new TypeError('\"encoding\" must be a valid string encoding')\n  }\n\n  var length = byteLength(string, encoding) | 0\n  that = createBuffer(that, length)\n\n  var actual = that.write(string, encoding)\n\n  if (actual !== length) {\n    // Writing a hex string, for example, that contains invalid characters will\n    // cause everything after the first invalid character to be ignored. (e.g.\n    // 'abxxcd' will be treated as 'ab')\n    that = that.slice(0, actual)\n  }\n\n  return that\n}\n\nfunction fromArrayLike (that, array) {\n  var length = array.length < 0 ? 0 : checked(array.length) | 0\n  that = createBuffer(that, length)\n  for (var i = 0; i < length; i += 1) {\n    that[i] = array[i] & 255\n  }\n  return that\n}\n\nfunction fromArrayBuffer (that, array, byteOffset, length) {\n  array.byteLength // this throws if `array` is not a valid ArrayBuffer\n\n  if (byteOffset < 0 || array.byteLength < byteOffset) {\n    throw new RangeError('\\'offset\\' is out of bounds')\n  }\n\n  if (array.byteLength < byteOffset + (length || 0)) {\n    throw new RangeError('\\'length\\' is out of bounds')\n  }\n\n  if (byteOffset === undefined && length === undefined) {\n    array = new Uint8Array(array)\n  } else if (length === undefined) {\n    array = new Uint8Array(array, byteOffset)\n  } else {\n    array = new Uint8Array(array, byteOffset, length)\n  }\n\n  if (Buffer.TYPED_ARRAY_SUPPORT) {\n    // Return an augmented `Uint8Array` instance, for best performance\n    that = array\n    that.__proto__ = Buffer.prototype\n  } else {\n    // Fallback: Return an object instance of the Buffer class\n    that = fromArrayLike(that, array)\n  }\n  return that\n}\n\nfunction fromObject (that, obj) {\n  if (Buffer.isBuffer(obj)) {\n    var len = checked(obj.length) | 0\n    that = createBuffer(that, len)\n\n    if (that.length === 0) {\n      return that\n    }\n\n    obj.copy(that, 0, 0, len)\n    return that\n  }\n\n  if (obj) {\n    if ((typeof ArrayBuffer !== 'undefined' &&\n        obj.buffer instanceof ArrayBuffer) || 'length' in obj) {\n      if (typeof obj.length !== 'number' || isnan(obj.length)) {\n        return createBuffer(that, 0)\n      }\n      return fromArrayLike(that, obj)\n    }\n\n    if (obj.type === 'Buffer' && isArray(obj.data)) {\n      return fromArrayLike(that, obj.data)\n    }\n  }\n\n  throw new TypeError('First argument must be a string, Buffer, ArrayBuffer, Array, or array-like object.')\n}\n\nfunction checked (length) {\n  // Note: cannot use `length < kMaxLength()` here because that fails when\n  // length is NaN (which is otherwise coerced to zero.)\n  if (length >= kMaxLength()) {\n    throw new RangeError('Attempt to allocate Buffer larger than maximum ' +\n                         'size: 0x' + kMaxLength().toString(16) + ' bytes')\n  }\n  return length | 0\n}\n\nfunction SlowBuffer (length) {\n  if (+length != length) { // eslint-disable-line eqeqeq\n    length = 0\n  }\n  return Buffer.alloc(+length)\n}\n\nBuffer.isBuffer = function isBuffer (b) {\n  return !!(b != null && b._isBuffer)\n}\n\nBuffer.compare = function compare (a, b) {\n  if (!Buffer.isBuffer(a) || !Buffer.isBuffer(b)) {\n    throw new TypeError('Arguments must be Buffers')\n  }\n\n  if (a === b) return 0\n\n  var x = a.length\n  var y = b.length\n\n  for (var i = 0, len = Math.min(x, y); i < len; ++i) {\n    if (a[i] !== b[i]) {\n      x = a[i]\n      y = b[i]\n      break\n    }\n  }\n\n  if (x < y) return -1\n  if (y < x) return 1\n  return 0\n}\n\nBuffer.isEncoding = function isEncoding (encoding) {\n  switch (String(encoding).toLowerCase()) {\n    case 'hex':\n    case 'utf8':\n    case 'utf-8':\n    case 'ascii':\n    case 'latin1':\n    case 'binary':\n    case 'base64':\n    case 'ucs2':\n    case 'ucs-2':\n    case 'utf16le':\n    case 'utf-16le':\n      return true\n    default:\n      return false\n  }\n}\n\nBuffer.concat = function concat (list, length) {\n  if (!isArray(list)) {\n    throw new TypeError('\"list\" argument must be an Array of Buffers')\n  }\n\n  if (list.length === 0) {\n    return Buffer.alloc(0)\n  }\n\n  var i\n  if (length === undefined) {\n    length = 0\n    for (i = 0; i < list.length; ++i) {\n      length += list[i].length\n    }\n  }\n\n  var buffer = Buffer.allocUnsafe(length)\n  var pos = 0\n  for (i = 0; i < list.length; ++i) {\n    var buf = list[i]\n    if (!Buffer.isBuffer(buf)) {\n      throw new TypeError('\"list\" argument must be an Array of Buffers')\n    }\n    buf.copy(buffer, pos)\n    pos += buf.length\n  }\n  return buffer\n}\n\nfunction byteLength (string, encoding) {\n  if (Buffer.isBuffer(string)) {\n    return string.length\n  }\n  if (typeof ArrayBuffer !== 'undefined' && typeof ArrayBuffer.isView === 'function' &&\n      (ArrayBuffer.isView(string) || string instanceof ArrayBuffer)) {\n    return string.byteLength\n  }\n  if (typeof string !== 'string') {\n    string = '' + string\n  }\n\n  var len = string.length\n  if (len === 0) return 0\n\n  // Use a for loop to avoid recursion\n  var loweredCase = false\n  for (;;) {\n    switch (encoding) {\n      case 'ascii':\n      case 'latin1':\n      case 'binary':\n        return len\n      case 'utf8':\n      case 'utf-8':\n      case undefined:\n        return utf8ToBytes(string).length\n      case 'ucs2':\n      case 'ucs-2':\n      case 'utf16le':\n      case 'utf-16le':\n        return len * 2\n      case 'hex':\n        return len >>> 1\n      case 'base64':\n        return base64ToBytes(string).length\n      default:\n        if (loweredCase) return utf8ToBytes(string).length // assume utf8\n        encoding = ('' + encoding).toLowerCase()\n        loweredCase = true\n    }\n  }\n}\nBuffer.byteLength = byteLength\n\nfunction slowToString (encoding, start, end) {\n  var loweredCase = false\n\n  // No need to verify that \"this.length <= MAX_UINT32\" since it's a read-only\n  // property of a typed array.\n\n  // This behaves neither like String nor Uint8Array in that we set start/end\n  // to their upper/lower bounds if the value passed is out of range.\n  // undefined is handled specially as per ECMA-262 6th Edition,\n  // Section 13.3.3.7 Runtime Semantics: KeyedBindingInitialization.\n  if (start === undefined || start < 0) {\n    start = 0\n  }\n  // Return early if start > this.length. Done here to prevent potential uint32\n  // coercion fail below.\n  if (start > this.length) {\n    return ''\n  }\n\n  if (end === undefined || end > this.length) {\n    end = this.length\n  }\n\n  if (end <= 0) {\n    return ''\n  }\n\n  // Force coersion to uint32. This will also coerce falsey/NaN values to 0.\n  end >>>= 0\n  start >>>= 0\n\n  if (end <= start) {\n    return ''\n  }\n\n  if (!encoding) encoding = 'utf8'\n\n  while (true) {\n    switch (encoding) {\n      case 'hex':\n        return hexSlice(this, start, end)\n\n      case 'utf8':\n      case 'utf-8':\n        return utf8Slice(this, start, end)\n\n      case 'ascii':\n        return asciiSlice(this, start, end)\n\n      case 'latin1':\n      case 'binary':\n        return latin1Slice(this, start, end)\n\n      case 'base64':\n        return base64Slice(this, start, end)\n\n      case 'ucs2':\n      case 'ucs-2':\n      case 'utf16le':\n      case 'utf-16le':\n        return utf16leSlice(this, start, end)\n\n      default:\n        if (loweredCase) throw new TypeError('Unknown encoding: ' + encoding)\n        encoding = (encoding + '').toLowerCase()\n        loweredCase = true\n    }\n  }\n}\n\n// The property is used by `Buffer.isBuffer` and `is-buffer` (in Safari 5-7) to detect\n// Buffer instances.\nBuffer.prototype._isBuffer = true\n\nfunction swap (b, n, m) {\n  var i = b[n]\n  b[n] = b[m]\n  b[m] = i\n}\n\nBuffer.prototype.swap16 = function swap16 () {\n  var len = this.length\n  if (len % 2 !== 0) {\n    throw new RangeError('Buffer size must be a multiple of 16-bits')\n  }\n  for (var i = 0; i < len; i += 2) {\n    swap(this, i, i + 1)\n  }\n  return this\n}\n\nBuffer.prototype.swap32 = function swap32 () {\n  var len = this.length\n  if (len % 4 !== 0) {\n    throw new RangeError('Buffer size must be a multiple of 32-bits')\n  }\n  for (var i = 0; i < len; i += 4) {\n    swap(this, i, i + 3)\n    swap(this, i + 1, i + 2)\n  }\n  return this\n}\n\nBuffer.prototype.swap64 = function swap64 () {\n  var len = this.length\n  if (len % 8 !== 0) {\n    throw new RangeError('Buffer size must be a multiple of 64-bits')\n  }\n  for (var i = 0; i < len; i += 8) {\n    swap(this, i, i + 7)\n    swap(this, i + 1, i + 6)\n    swap(this, i + 2, i + 5)\n    swap(this, i + 3, i + 4)\n  }\n  return this\n}\n\nBuffer.prototype.toString = function toString () {\n  var length = this.length | 0\n  if (length === 0) return ''\n  if (arguments.length === 0) return utf8Slice(this, 0, length)\n  return slowToString.apply(this, arguments)\n}\n\nBuffer.prototype.equals = function equals (b) {\n  if (!Buffer.isBuffer(b)) throw new TypeError('Argument must be a Buffer')\n  if (this === b) return true\n  return Buffer.compare(this, b) === 0\n}\n\nBuffer.prototype.inspect = function inspect () {\n  var str = ''\n  var max = exports.INSPECT_MAX_BYTES\n  if (this.length > 0) {\n    str = this.toString('hex', 0, max).match(/.{2}/g).join(' ')\n    if (this.length > max) str += ' ... '\n  }\n  return '<Buffer ' + str + '>'\n}\n\nBuffer.prototype.compare = function compare (target, start, end, thisStart, thisEnd) {\n  if (!Buffer.isBuffer(target)) {\n    throw new TypeError('Argument must be a Buffer')\n  }\n\n  if (start === undefined) {\n    start = 0\n  }\n  if (end === undefined) {\n    end = target ? target.length : 0\n  }\n  if (thisStart === undefined) {\n    thisStart = 0\n  }\n  if (thisEnd === undefined) {\n    thisEnd = this.length\n  }\n\n  if (start < 0 || end > target.length || thisStart < 0 || thisEnd > this.length) {\n    throw new RangeError('out of range index')\n  }\n\n  if (thisStart >= thisEnd && start >= end) {\n    return 0\n  }\n  if (thisStart >= thisEnd) {\n    return -1\n  }\n  if (start >= end) {\n    return 1\n  }\n\n  start >>>= 0\n  end >>>= 0\n  thisStart >>>= 0\n  thisEnd >>>= 0\n\n  if (this === target) return 0\n\n  var x = thisEnd - thisStart\n  var y = end - start\n  var len = Math.min(x, y)\n\n  var thisCopy = this.slice(thisStart, thisEnd)\n  var targetCopy = target.slice(start, end)\n\n  for (var i = 0; i < len; ++i) {\n    if (thisCopy[i] !== targetCopy[i]) {\n      x = thisCopy[i]\n      y = targetCopy[i]\n      break\n    }\n  }\n\n  if (x < y) return -1\n  if (y < x) return 1\n  return 0\n}\n\n// Finds either the first index of `val` in `buffer` at offset >= `byteOffset`,\n// OR the last index of `val` in `buffer` at offset <= `byteOffset`.\n//\n// Arguments:\n// - buffer - a Buffer to search\n// - val - a string, Buffer, or number\n// - byteOffset - an index into `buffer`; will be clamped to an int32\n// - encoding - an optional encoding, relevant is val is a string\n// - dir - true for indexOf, false for lastIndexOf\nfunction bidirectionalIndexOf (buffer, val, byteOffset, encoding, dir) {\n  // Empty buffer means no match\n  if (buffer.length === 0) return -1\n\n  // Normalize byteOffset\n  if (typeof byteOffset === 'string') {\n    encoding = byteOffset\n    byteOffset = 0\n  } else if (byteOffset > 0x7fffffff) {\n    byteOffset = 0x7fffffff\n  } else if (byteOffset < -0x80000000) {\n    byteOffset = -0x80000000\n  }\n  byteOffset = +byteOffset  // Coerce to Number.\n  if (isNaN(byteOffset)) {\n    // byteOffset: it it's undefined, null, NaN, \"foo\", etc, search whole buffer\n    byteOffset = dir ? 0 : (buffer.length - 1)\n  }\n\n  // Normalize byteOffset: negative offsets start from the end of the buffer\n  if (byteOffset < 0) byteOffset = buffer.length + byteOffset\n  if (byteOffset >= buffer.length) {\n    if (dir) return -1\n    else byteOffset = buffer.length - 1\n  } else if (byteOffset < 0) {\n    if (dir) byteOffset = 0\n    else return -1\n  }\n\n  // Normalize val\n  if (typeof val === 'string') {\n    val = Buffer.from(val, encoding)\n  }\n\n  // Finally, search either indexOf (if dir is true) or lastIndexOf\n  if (Buffer.isBuffer(val)) {\n    // Special case: looking for empty string/buffer always fails\n    if (val.length === 0) {\n      return -1\n    }\n    return arrayIndexOf(buffer, val, byteOffset, encoding, dir)\n  } else if (typeof val === 'number') {\n    val = val & 0xFF // Search for a byte value [0-255]\n    if (Buffer.TYPED_ARRAY_SUPPORT &&\n        typeof Uint8Array.prototype.indexOf === 'function') {\n      if (dir) {\n        return Uint8Array.prototype.indexOf.call(buffer, val, byteOffset)\n      } else {\n        return Uint8Array.prototype.lastIndexOf.call(buffer, val, byteOffset)\n      }\n    }\n    return arrayIndexOf(buffer, [ val ], byteOffset, encoding, dir)\n  }\n\n  throw new TypeError('val must be string, number or Buffer')\n}\n\nfunction arrayIndexOf (arr, val, byteOffset, encoding, dir) {\n  var indexSize = 1\n  var arrLength = arr.length\n  var valLength = val.length\n\n  if (encoding !== undefined) {\n    encoding = String(encoding).toLowerCase()\n    if (encoding === 'ucs2' || encoding === 'ucs-2' ||\n        encoding === 'utf16le' || encoding === 'utf-16le') {\n      if (arr.length < 2 || val.length < 2) {\n        return -1\n      }\n      indexSize = 2\n      arrLength /= 2\n      valLength /= 2\n      byteOffset /= 2\n    }\n  }\n\n  function read (buf, i) {\n    if (indexSize === 1) {\n      return buf[i]\n    } else {\n      return buf.readUInt16BE(i * indexSize)\n    }\n  }\n\n  var i\n  if (dir) {\n    var foundIndex = -1\n    for (i = byteOffset; i < arrLength; i++) {\n      if (read(arr, i) === read(val, foundIndex === -1 ? 0 : i - foundIndex)) {\n        if (foundIndex === -1) foundIndex = i\n        if (i - foundIndex + 1 === valLength) return foundIndex * indexSize\n      } else {\n        if (foundIndex !== -1) i -= i - foundIndex\n        foundIndex = -1\n      }\n    }\n  } else {\n    if (byteOffset + valLength > arrLength) byteOffset = arrLength - valLength\n    for (i = byteOffset; i >= 0; i--) {\n      var found = true\n      for (var j = 0; j < valLength; j++) {\n        if (read(arr, i + j) !== read(val, j)) {\n          found = false\n          break\n        }\n      }\n      if (found) return i\n    }\n  }\n\n  return -1\n}\n\nBuffer.prototype.includes = function includes (val, byteOffset, encoding) {\n  return this.indexOf(val, byteOffset, encoding) !== -1\n}\n\nBuffer.prototype.indexOf = function indexOf (val, byteOffset, encoding) {\n  return bidirectionalIndexOf(this, val, byteOffset, encoding, true)\n}\n\nBuffer.prototype.lastIndexOf = function lastIndexOf (val, byteOffset, encoding) {\n  return bidirectionalIndexOf(this, val, byteOffset, encoding, false)\n}\n\nfunction hexWrite (buf, string, offset, length) {\n  offset = Number(offset) || 0\n  var remaining = buf.length - offset\n  if (!length) {\n    length = remaining\n  } else {\n    length = Number(length)\n    if (length > remaining) {\n      length = remaining\n    }\n  }\n\n  // must be an even number of digits\n  var strLen = string.length\n  if (strLen % 2 !== 0) throw new TypeError('Invalid hex string')\n\n  if (length > strLen / 2) {\n    length = strLen / 2\n  }\n  for (var i = 0; i < length; ++i) {\n    var parsed = parseInt(string.substr(i * 2, 2), 16)\n    if (isNaN(parsed)) return i\n    buf[offset + i] = parsed\n  }\n  return i\n}\n\nfunction utf8Write (buf, string, offset, length) {\n  return blitBuffer(utf8ToBytes(string, buf.length - offset), buf, offset, length)\n}\n\nfunction asciiWrite (buf, string, offset, length) {\n  return blitBuffer(asciiToBytes(string), buf, offset, length)\n}\n\nfunction latin1Write (buf, string, offset, length) {\n  return asciiWrite(buf, string, offset, length)\n}\n\nfunction base64Write (buf, string, offset, length) {\n  return blitBuffer(base64ToBytes(string), buf, offset, length)\n}\n\nfunction ucs2Write (buf, string, offset, length) {\n  return blitBuffer(utf16leToBytes(string, buf.length - offset), buf, offset, length)\n}\n\nBuffer.prototype.write = function write (string, offset, length, encoding) {\n  // Buffer#write(string)\n  if (offset === undefined) {\n    encoding = 'utf8'\n    length = this.length\n    offset = 0\n  // Buffer#write(string, encoding)\n  } else if (length === undefined && typeof offset === 'string') {\n    encoding = offset\n    length = this.length\n    offset = 0\n  // Buffer#write(string, offset[, length][, encoding])\n  } else if (isFinite(offset)) {\n    offset = offset | 0\n    if (isFinite(length)) {\n      length = length | 0\n      if (encoding === undefined) encoding = 'utf8'\n    } else {\n      encoding = length\n      length = undefined\n    }\n  // legacy write(string, encoding, offset, length) - remove in v0.13\n  } else {\n    throw new Error(\n      'Buffer.write(string, encoding, offset[, length]) is no longer supported'\n    )\n  }\n\n  var remaining = this.length - offset\n  if (length === undefined || length > remaining) length = remaining\n\n  if ((string.length > 0 && (length < 0 || offset < 0)) || offset > this.length) {\n    throw new RangeError('Attempt to write outside buffer bounds')\n  }\n\n  if (!encoding) encoding = 'utf8'\n\n  var loweredCase = false\n  for (;;) {\n    switch (encoding) {\n      case 'hex':\n        return hexWrite(this, string, offset, length)\n\n      case 'utf8':\n      case 'utf-8':\n        return utf8Write(this, string, offset, length)\n\n      case 'ascii':\n        return asciiWrite(this, string, offset, length)\n\n      case 'latin1':\n      case 'binary':\n        return latin1Write(this, string, offset, length)\n\n      case 'base64':\n        // Warning: maxLength not taken into account in base64Write\n        return base64Write(this, string, offset, length)\n\n      case 'ucs2':\n      case 'ucs-2':\n      case 'utf16le':\n      case 'utf-16le':\n        return ucs2Write(this, string, offset, length)\n\n      default:\n        if (loweredCase) throw new TypeError('Unknown encoding: ' + encoding)\n        encoding = ('' + encoding).toLowerCase()\n        loweredCase = true\n    }\n  }\n}\n\nBuffer.prototype.toJSON = function toJSON () {\n  return {\n    type: 'Buffer',\n    data: Array.prototype.slice.call(this._arr || this, 0)\n  }\n}\n\nfunction base64Slice (buf, start, end) {\n  if (start === 0 && end === buf.length) {\n    return base64.fromByteArray(buf)\n  } else {\n    return base64.fromByteArray(buf.slice(start, end))\n  }\n}\n\nfunction utf8Slice (buf, start, end) {\n  end = Math.min(buf.length, end)\n  var res = []\n\n  var i = start\n  while (i < end) {\n    var firstByte = buf[i]\n    var codePoint = null\n    var bytesPerSequence = (firstByte > 0xEF) ? 4\n      : (firstByte > 0xDF) ? 3\n      : (firstByte > 0xBF) ? 2\n      : 1\n\n    if (i + bytesPerSequence <= end) {\n      var secondByte, thirdByte, fourthByte, tempCodePoint\n\n      switch (bytesPerSequence) {\n        case 1:\n          if (firstByte < 0x80) {\n            codePoint = firstByte\n          }\n          break\n        case 2:\n          secondByte = buf[i + 1]\n          if ((secondByte & 0xC0) === 0x80) {\n            tempCodePoint = (firstByte & 0x1F) << 0x6 | (secondByte & 0x3F)\n            if (tempCodePoint > 0x7F) {\n              codePoint = tempCodePoint\n            }\n          }\n          break\n        case 3:\n          secondByte = buf[i + 1]\n          thirdByte = buf[i + 2]\n          if ((secondByte & 0xC0) === 0x80 && (thirdByte & 0xC0) === 0x80) {\n            tempCodePoint = (firstByte & 0xF) << 0xC | (secondByte & 0x3F) << 0x6 | (thirdByte & 0x3F)\n            if (tempCodePoint > 0x7FF && (tempCodePoint < 0xD800 || tempCodePoint > 0xDFFF)) {\n              codePoint = tempCodePoint\n            }\n          }\n          break\n        case 4:\n          secondByte = buf[i + 1]\n          thirdByte = buf[i + 2]\n          fourthByte = buf[i + 3]\n          if ((secondByte & 0xC0) === 0x80 && (thirdByte & 0xC0) === 0x80 && (fourthByte & 0xC0) === 0x80) {\n            tempCodePoint = (firstByte & 0xF) << 0x12 | (secondByte & 0x3F) << 0xC | (thirdByte & 0x3F) << 0x6 | (fourthByte & 0x3F)\n            if (tempCodePoint > 0xFFFF && tempCodePoint < 0x110000) {\n              codePoint = tempCodePoint\n            }\n          }\n      }\n    }\n\n    if (codePoint === null) {\n      // we did not generate a valid codePoint so insert a\n      // replacement char (U+FFFD) and advance only 1 byte\n      codePoint = 0xFFFD\n      bytesPerSequence = 1\n    } else if (codePoint > 0xFFFF) {\n      // encode to utf16 (surrogate pair dance)\n      codePoint -= 0x10000\n      res.push(codePoint >>> 10 & 0x3FF | 0xD800)\n      codePoint = 0xDC00 | codePoint & 0x3FF\n    }\n\n    res.push(codePoint)\n    i += bytesPerSequence\n  }\n\n  return decodeCodePointsArray(res)\n}\n\n// Based on http://stackoverflow.com/a/22747272/680742, the browser with\n// the lowest limit is Chrome, with 0x10000 args.\n// We go 1 magnitude less, for safety\nvar MAX_ARGUMENTS_LENGTH = 0x1000\n\nfunction decodeCodePointsArray (codePoints) {\n  var len = codePoints.length\n  if (len <= MAX_ARGUMENTS_LENGTH) {\n    return String.fromCharCode.apply(String, codePoints) // avoid extra slice()\n  }\n\n  // Decode in chunks to avoid \"call stack size exceeded\".\n  var res = ''\n  var i = 0\n  while (i < len) {\n    res += String.fromCharCode.apply(\n      String,\n      codePoints.slice(i, i += MAX_ARGUMENTS_LENGTH)\n    )\n  }\n  return res\n}\n\nfunction asciiSlice (buf, start, end) {\n  var ret = ''\n  end = Math.min(buf.length, end)\n\n  for (var i = start; i < end; ++i) {\n    ret += String.fromCharCode(buf[i] & 0x7F)\n  }\n  return ret\n}\n\nfunction latin1Slice (buf, start, end) {\n  var ret = ''\n  end = Math.min(buf.length, end)\n\n  for (var i = start; i < end; ++i) {\n    ret += String.fromCharCode(buf[i])\n  }\n  return ret\n}\n\nfunction hexSlice (buf, start, end) {\n  var len = buf.length\n\n  if (!start || start < 0) start = 0\n  if (!end || end < 0 || end > len) end = len\n\n  var out = ''\n  for (var i = start; i < end; ++i) {\n    out += toHex(buf[i])\n  }\n  return out\n}\n\nfunction utf16leSlice (buf, start, end) {\n  var bytes = buf.slice(start, end)\n  var res = ''\n  for (var i = 0; i < bytes.length; i += 2) {\n    res += String.fromCharCode(bytes[i] + bytes[i + 1] * 256)\n  }\n  return res\n}\n\nBuffer.prototype.slice = function slice (start, end) {\n  var len = this.length\n  start = ~~start\n  end = end === undefined ? len : ~~end\n\n  if (start < 0) {\n    start += len\n    if (start < 0) start = 0\n  } else if (start > len) {\n    start = len\n  }\n\n  if (end < 0) {\n    end += len\n    if (end < 0) end = 0\n  } else if (end > len) {\n    end = len\n  }\n\n  if (end < start) end = start\n\n  var newBuf\n  if (Buffer.TYPED_ARRAY_SUPPORT) {\n    newBuf = this.subarray(start, end)\n    newBuf.__proto__ = Buffer.prototype\n  } else {\n    var sliceLen = end - start\n    newBuf = new Buffer(sliceLen, undefined)\n    for (var i = 0; i < sliceLen; ++i) {\n      newBuf[i] = this[i + start]\n    }\n  }\n\n  return newBuf\n}\n\n/*\n * Need to make sure that buffer isn't trying to write out of bounds.\n */\nfunction checkOffset (offset, ext, length) {\n  if ((offset % 1) !== 0 || offset < 0) throw new RangeError('offset is not uint')\n  if (offset + ext > length) throw new RangeError('Trying to access beyond buffer length')\n}\n\nBuffer.prototype.readUIntLE = function readUIntLE (offset, byteLength, noAssert) {\n  offset = offset | 0\n  byteLength = byteLength | 0\n  if (!noAssert) checkOffset(offset, byteLength, this.length)\n\n  var val = this[offset]\n  var mul = 1\n  var i = 0\n  while (++i < byteLength && (mul *= 0x100)) {\n    val += this[offset + i] * mul\n  }\n\n  return val\n}\n\nBuffer.prototype.readUIntBE = function readUIntBE (offset, byteLength, noAssert) {\n  offset = offset | 0\n  byteLength = byteLength | 0\n  if (!noAssert) {\n    checkOffset(offset, byteLength, this.length)\n  }\n\n  var val = this[offset + --byteLength]\n  var mul = 1\n  while (byteLength > 0 && (mul *= 0x100)) {\n    val += this[offset + --byteLength] * mul\n  }\n\n  return val\n}\n\nBuffer.prototype.readUInt8 = function readUInt8 (offset, noAssert) {\n  if (!noAssert) checkOffset(offset, 1, this.length)\n  return this[offset]\n}\n\nBuffer.prototype.readUInt16LE = function readUInt16LE (offset, noAssert) {\n  if (!noAssert) checkOffset(offset, 2, this.length)\n  return this[offset] | (this[offset + 1] << 8)\n}\n\nBuffer.prototype.readUInt16BE = function readUInt16BE (offset, noAssert) {\n  if (!noAssert) checkOffset(offset, 2, this.length)\n  return (this[offset] << 8) | this[offset + 1]\n}\n\nBuffer.prototype.readUInt32LE = function readUInt32LE (offset, noAssert) {\n  if (!noAssert) checkOffset(offset, 4, this.length)\n\n  return ((this[offset]) |\n      (this[offset + 1] << 8) |\n      (this[offset + 2] << 16)) +\n      (this[offset + 3] * 0x1000000)\n}\n\nBuffer.prototype.readUInt32BE = function readUInt32BE (offset, noAssert) {\n  if (!noAssert) checkOffset(offset, 4, this.length)\n\n  return (this[offset] * 0x1000000) +\n    ((this[offset + 1] << 16) |\n    (this[offset + 2] << 8) |\n    this[offset + 3])\n}\n\nBuffer.prototype.readIntLE = function readIntLE (offset, byteLength, noAssert) {\n  offset = offset | 0\n  byteLength = byteLength | 0\n  if (!noAssert) checkOffset(offset, byteLength, this.length)\n\n  var val = this[offset]\n  var mul = 1\n  var i = 0\n  while (++i < byteLength && (mul *= 0x100)) {\n    val += this[offset + i] * mul\n  }\n  mul *= 0x80\n\n  if (val >= mul) val -= Math.pow(2, 8 * byteLength)\n\n  return val\n}\n\nBuffer.prototype.readIntBE = function readIntBE (offset, byteLength, noAssert) {\n  offset = offset | 0\n  byteLength = byteLength | 0\n  if (!noAssert) checkOffset(offset, byteLength, this.length)\n\n  var i = byteLength\n  var mul = 1\n  var val = this[offset + --i]\n  while (i > 0 && (mul *= 0x100)) {\n    val += this[offset + --i] * mul\n  }\n  mul *= 0x80\n\n  if (val >= mul) val -= Math.pow(2, 8 * byteLength)\n\n  return val\n}\n\nBuffer.prototype.readInt8 = function readInt8 (offset, noAssert) {\n  if (!noAssert) checkOffset(offset, 1, this.length)\n  if (!(this[offset] & 0x80)) return (this[offset])\n  return ((0xff - this[offset] + 1) * -1)\n}\n\nBuffer.prototype.readInt16LE = function readInt16LE (offset, noAssert) {\n  if (!noAssert) checkOffset(offset, 2, this.length)\n  var val = this[offset] | (this[offset + 1] << 8)\n  return (val & 0x8000) ? val | 0xFFFF0000 : val\n}\n\nBuffer.prototype.readInt16BE = function readInt16BE (offset, noAssert) {\n  if (!noAssert) checkOffset(offset, 2, this.length)\n  var val = this[offset + 1] | (this[offset] << 8)\n  return (val & 0x8000) ? val | 0xFFFF0000 : val\n}\n\nBuffer.prototype.readInt32LE = function readInt32LE (offset, noAssert) {\n  if (!noAssert) checkOffset(offset, 4, this.length)\n\n  return (this[offset]) |\n    (this[offset + 1] << 8) |\n    (this[offset + 2] << 16) |\n    (this[offset + 3] << 24)\n}\n\nBuffer.prototype.readInt32BE = function readInt32BE (offset, noAssert) {\n  if (!noAssert) checkOffset(offset, 4, this.length)\n\n  return (this[offset] << 24) |\n    (this[offset + 1] << 16) |\n    (this[offset + 2] << 8) |\n    (this[offset + 3])\n}\n\nBuffer.prototype.readFloatLE = function readFloatLE (offset, noAssert) {\n  if (!noAssert) checkOffset(offset, 4, this.length)\n  return ieee754.read(this, offset, true, 23, 4)\n}\n\nBuffer.prototype.readFloatBE = function readFloatBE (offset, noAssert) {\n  if (!noAssert) checkOffset(offset, 4, this.length)\n  return ieee754.read(this, offset, false, 23, 4)\n}\n\nBuffer.prototype.readDoubleLE = function readDoubleLE (offset, noAssert) {\n  if (!noAssert) checkOffset(offset, 8, this.length)\n  return ieee754.read(this, offset, true, 52, 8)\n}\n\nBuffer.prototype.readDoubleBE = function readDoubleBE (offset, noAssert) {\n  if (!noAssert) checkOffset(offset, 8, this.length)\n  return ieee754.read(this, offset, false, 52, 8)\n}\n\nfunction checkInt (buf, value, offset, ext, max, min) {\n  if (!Buffer.isBuffer(buf)) throw new TypeError('\"buffer\" argument must be a Buffer instance')\n  if (value > max || value < min) throw new RangeError('\"value\" argument is out of bounds')\n  if (offset + ext > buf.length) throw new RangeError('Index out of range')\n}\n\nBuffer.prototype.writeUIntLE = function writeUIntLE (value, offset, byteLength, noAssert) {\n  value = +value\n  offset = offset | 0\n  byteLength = byteLength | 0\n  if (!noAssert) {\n    var maxBytes = Math.pow(2, 8 * byteLength) - 1\n    checkInt(this, value, offset, byteLength, maxBytes, 0)\n  }\n\n  var mul = 1\n  var i = 0\n  this[offset] = value & 0xFF\n  while (++i < byteLength && (mul *= 0x100)) {\n    this[offset + i] = (value / mul) & 0xFF\n  }\n\n  return offset + byteLength\n}\n\nBuffer.prototype.writeUIntBE = function writeUIntBE (value, offset, byteLength, noAssert) {\n  value = +value\n  offset = offset | 0\n  byteLength = byteLength | 0\n  if (!noAssert) {\n    var maxBytes = Math.pow(2, 8 * byteLength) - 1\n    checkInt(this, value, offset, byteLength, maxBytes, 0)\n  }\n\n  var i = byteLength - 1\n  var mul = 1\n  this[offset + i] = value & 0xFF\n  while (--i >= 0 && (mul *= 0x100)) {\n    this[offset + i] = (value / mul) & 0xFF\n  }\n\n  return offset + byteLength\n}\n\nBuffer.prototype.writeUInt8 = function writeUInt8 (value, offset, noAssert) {\n  value = +value\n  offset = offset | 0\n  if (!noAssert) checkInt(this, value, offset, 1, 0xff, 0)\n  if (!Buffer.TYPED_ARRAY_SUPPORT) value = Math.floor(value)\n  this[offset] = (value & 0xff)\n  return offset + 1\n}\n\nfunction objectWriteUInt16 (buf, value, offset, littleEndian) {\n  if (value < 0) value = 0xffff + value + 1\n  for (var i = 0, j = Math.min(buf.length - offset, 2); i < j; ++i) {\n    buf[offset + i] = (value & (0xff << (8 * (littleEndian ? i : 1 - i)))) >>>\n      (littleEndian ? i : 1 - i) * 8\n  }\n}\n\nBuffer.prototype.writeUInt16LE = function writeUInt16LE (value, offset, noAssert) {\n  value = +value\n  offset = offset | 0\n  if (!noAssert) checkInt(this, value, offset, 2, 0xffff, 0)\n  if (Buffer.TYPED_ARRAY_SUPPORT) {\n    this[offset] = (value & 0xff)\n    this[offset + 1] = (value >>> 8)\n  } else {\n    objectWriteUInt16(this, value, offset, true)\n  }\n  return offset + 2\n}\n\nBuffer.prototype.writeUInt16BE = function writeUInt16BE (value, offset, noAssert) {\n  value = +value\n  offset = offset | 0\n  if (!noAssert) checkInt(this, value, offset, 2, 0xffff, 0)\n  if (Buffer.TYPED_ARRAY_SUPPORT) {\n    this[offset] = (value >>> 8)\n    this[offset + 1] = (value & 0xff)\n  } else {\n    objectWriteUInt16(this, value, offset, false)\n  }\n  return offset + 2\n}\n\nfunction objectWriteUInt32 (buf, value, offset, littleEndian) {\n  if (value < 0) value = 0xffffffff + value + 1\n  for (var i = 0, j = Math.min(buf.length - offset, 4); i < j; ++i) {\n    buf[offset + i] = (value >>> (littleEndian ? i : 3 - i) * 8) & 0xff\n  }\n}\n\nBuffer.prototype.writeUInt32LE = function writeUInt32LE (value, offset, noAssert) {\n  value = +value\n  offset = offset | 0\n  if (!noAssert) checkInt(this, value, offset, 4, 0xffffffff, 0)\n  if (Buffer.TYPED_ARRAY_SUPPORT) {\n    this[offset + 3] = (value >>> 24)\n    this[offset + 2] = (value >>> 16)\n    this[offset + 1] = (value >>> 8)\n    this[offset] = (value & 0xff)\n  } else {\n    objectWriteUInt32(this, value, offset, true)\n  }\n  return offset + 4\n}\n\nBuffer.prototype.writeUInt32BE = function writeUInt32BE (value, offset, noAssert) {\n  value = +value\n  offset = offset | 0\n  if (!noAssert) checkInt(this, value, offset, 4, 0xffffffff, 0)\n  if (Buffer.TYPED_ARRAY_SUPPORT) {\n    this[offset] = (value >>> 24)\n    this[offset + 1] = (value >>> 16)\n    this[offset + 2] = (value >>> 8)\n    this[offset + 3] = (value & 0xff)\n  } else {\n    objectWriteUInt32(this, value, offset, false)\n  }\n  return offset + 4\n}\n\nBuffer.prototype.writeIntLE = function writeIntLE (value, offset, byteLength, noAssert) {\n  value = +value\n  offset = offset | 0\n  if (!noAssert) {\n    var limit = Math.pow(2, 8 * byteLength - 1)\n\n    checkInt(this, value, offset, byteLength, limit - 1, -limit)\n  }\n\n  var i = 0\n  var mul = 1\n  var sub = 0\n  this[offset] = value & 0xFF\n  while (++i < byteLength && (mul *= 0x100)) {\n    if (value < 0 && sub === 0 && this[offset + i - 1] !== 0) {\n      sub = 1\n    }\n    this[offset + i] = ((value / mul) >> 0) - sub & 0xFF\n  }\n\n  return offset + byteLength\n}\n\nBuffer.prototype.writeIntBE = function writeIntBE (value, offset, byteLength, noAssert) {\n  value = +value\n  offset = offset | 0\n  if (!noAssert) {\n    var limit = Math.pow(2, 8 * byteLength - 1)\n\n    checkInt(this, value, offset, byteLength, limit - 1, -limit)\n  }\n\n  var i = byteLength - 1\n  var mul = 1\n  var sub = 0\n  this[offset + i] = value & 0xFF\n  while (--i >= 0 && (mul *= 0x100)) {\n    if (value < 0 && sub === 0 && this[offset + i + 1] !== 0) {\n      sub = 1\n    }\n    this[offset + i] = ((value / mul) >> 0) - sub & 0xFF\n  }\n\n  return offset + byteLength\n}\n\nBuffer.prototype.writeInt8 = function writeInt8 (value, offset, noAssert) {\n  value = +value\n  offset = offset | 0\n  if (!noAssert) checkInt(this, value, offset, 1, 0x7f, -0x80)\n  if (!Buffer.TYPED_ARRAY_SUPPORT) value = Math.floor(value)\n  if (value < 0) value = 0xff + value + 1\n  this[offset] = (value & 0xff)\n  return offset + 1\n}\n\nBuffer.prototype.writeInt16LE = function writeInt16LE (value, offset, noAssert) {\n  value = +value\n  offset = offset | 0\n  if (!noAssert) checkInt(this, value, offset, 2, 0x7fff, -0x8000)\n  if (Buffer.TYPED_ARRAY_SUPPORT) {\n    this[offset] = (value & 0xff)\n    this[offset + 1] = (value >>> 8)\n  } else {\n    objectWriteUInt16(this, value, offset, true)\n  }\n  return offset + 2\n}\n\nBuffer.prototype.writeInt16BE = function writeInt16BE (value, offset, noAssert) {\n  value = +value\n  offset = offset | 0\n  if (!noAssert) checkInt(this, value, offset, 2, 0x7fff, -0x8000)\n  if (Buffer.TYPED_ARRAY_SUPPORT) {\n    this[offset] = (value >>> 8)\n    this[offset + 1] = (value & 0xff)\n  } else {\n    objectWriteUInt16(this, value, offset, false)\n  }\n  return offset + 2\n}\n\nBuffer.prototype.writeInt32LE = function writeInt32LE (value, offset, noAssert) {\n  value = +value\n  offset = offset | 0\n  if (!noAssert) checkInt(this, value, offset, 4, 0x7fffffff, -0x80000000)\n  if (Buffer.TYPED_ARRAY_SUPPORT) {\n    this[offset] = (value & 0xff)\n    this[offset + 1] = (value >>> 8)\n    this[offset + 2] = (value >>> 16)\n    this[offset + 3] = (value >>> 24)\n  } else {\n    objectWriteUInt32(this, value, offset, true)\n  }\n  return offset + 4\n}\n\nBuffer.prototype.writeInt32BE = function writeInt32BE (value, offset, noAssert) {\n  value = +value\n  offset = offset | 0\n  if (!noAssert) checkInt(this, value, offset, 4, 0x7fffffff, -0x80000000)\n  if (value < 0) value = 0xffffffff + value + 1\n  if (Buffer.TYPED_ARRAY_SUPPORT) {\n    this[offset] = (value >>> 24)\n    this[offset + 1] = (value >>> 16)\n    this[offset + 2] = (value >>> 8)\n    this[offset + 3] = (value & 0xff)\n  } else {\n    objectWriteUInt32(this, value, offset, false)\n  }\n  return offset + 4\n}\n\nfunction checkIEEE754 (buf, value, offset, ext, max, min) {\n  if (offset + ext > buf.length) throw new RangeError('Index out of range')\n  if (offset < 0) throw new RangeError('Index out of range')\n}\n\nfunction writeFloat (buf, value, offset, littleEndian, noAssert) {\n  if (!noAssert) {\n    checkIEEE754(buf, value, offset, 4, 3.4028234663852886e+38, -3.4028234663852886e+38)\n  }\n  ieee754.write(buf, value, offset, littleEndian, 23, 4)\n  return offset + 4\n}\n\nBuffer.prototype.writeFloatLE = function writeFloatLE (value, offset, noAssert) {\n  return writeFloat(this, value, offset, true, noAssert)\n}\n\nBuffer.prototype.writeFloatBE = function writeFloatBE (value, offset, noAssert) {\n  return writeFloat(this, value, offset, false, noAssert)\n}\n\nfunction writeDouble (buf, value, offset, littleEndian, noAssert) {\n  if (!noAssert) {\n    checkIEEE754(buf, value, offset, 8, 1.7976931348623157E+308, -1.7976931348623157E+308)\n  }\n  ieee754.write(buf, value, offset, littleEndian, 52, 8)\n  return offset + 8\n}\n\nBuffer.prototype.writeDoubleLE = function writeDoubleLE (value, offset, noAssert) {\n  return writeDouble(this, value, offset, true, noAssert)\n}\n\nBuffer.prototype.writeDoubleBE = function writeDoubleBE (value, offset, noAssert) {\n  return writeDouble(this, value, offset, false, noAssert)\n}\n\n// copy(targetBuffer, targetStart=0, sourceStart=0, sourceEnd=buffer.length)\nBuffer.prototype.copy = function copy (target, targetStart, start, end) {\n  if (!start) start = 0\n  if (!end && end !== 0) end = this.length\n  if (targetStart >= target.length) targetStart = target.length\n  if (!targetStart) targetStart = 0\n  if (end > 0 && end < start) end = start\n\n  // Copy 0 bytes; we're done\n  if (end === start) return 0\n  if (target.length === 0 || this.length === 0) return 0\n\n  // Fatal error conditions\n  if (targetStart < 0) {\n    throw new RangeError('targetStart out of bounds')\n  }\n  if (start < 0 || start >= this.length) throw new RangeError('sourceStart out of bounds')\n  if (end < 0) throw new RangeError('sourceEnd out of bounds')\n\n  // Are we oob?\n  if (end > this.length) end = this.length\n  if (target.length - targetStart < end - start) {\n    end = target.length - targetStart + start\n  }\n\n  var len = end - start\n  var i\n\n  if (this === target && start < targetStart && targetStart < end) {\n    // descending copy from end\n    for (i = len - 1; i >= 0; --i) {\n      target[i + targetStart] = this[i + start]\n    }\n  } else if (len < 1000 || !Buffer.TYPED_ARRAY_SUPPORT) {\n    // ascending copy from start\n    for (i = 0; i < len; ++i) {\n      target[i + targetStart] = this[i + start]\n    }\n  } else {\n    Uint8Array.prototype.set.call(\n      target,\n      this.subarray(start, start + len),\n      targetStart\n    )\n  }\n\n  return len\n}\n\n// Usage:\n//    buffer.fill(number[, offset[, end]])\n//    buffer.fill(buffer[, offset[, end]])\n//    buffer.fill(string[, offset[, end]][, encoding])\nBuffer.prototype.fill = function fill (val, start, end, encoding) {\n  // Handle string cases:\n  if (typeof val === 'string') {\n    if (typeof start === 'string') {\n      encoding = start\n      start = 0\n      end = this.length\n    } else if (typeof end === 'string') {\n      encoding = end\n      end = this.length\n    }\n    if (val.length === 1) {\n      var code = val.charCodeAt(0)\n      if (code < 256) {\n        val = code\n      }\n    }\n    if (encoding !== undefined && typeof encoding !== 'string') {\n      throw new TypeError('encoding must be a string')\n    }\n    if (typeof encoding === 'string' && !Buffer.isEncoding(encoding)) {\n      throw new TypeError('Unknown encoding: ' + encoding)\n    }\n  } else if (typeof val === 'number') {\n    val = val & 255\n  }\n\n  // Invalid ranges are not set to a default, so can range check early.\n  if (start < 0 || this.length < start || this.length < end) {\n    throw new RangeError('Out of range index')\n  }\n\n  if (end <= start) {\n    return this\n  }\n\n  start = start >>> 0\n  end = end === undefined ? this.length : end >>> 0\n\n  if (!val) val = 0\n\n  var i\n  if (typeof val === 'number') {\n    for (i = start; i < end; ++i) {\n      this[i] = val\n    }\n  } else {\n    var bytes = Buffer.isBuffer(val)\n      ? val\n      : utf8ToBytes(new Buffer(val, encoding).toString())\n    var len = bytes.length\n    for (i = 0; i < end - start; ++i) {\n      this[i + start] = bytes[i % len]\n    }\n  }\n\n  return this\n}\n\n// HELPER FUNCTIONS\n// ================\n\nvar INVALID_BASE64_RE = /[^+\\/0-9A-Za-z-_]/g\n\nfunction base64clean (str) {\n  // Node strips out invalid characters like \\n and \\t from the string, base64-js does not\n  str = stringtrim(str).replace(INVALID_BASE64_RE, '')\n  // Node converts strings with length < 2 to ''\n  if (str.length < 2) return ''\n  // Node allows for non-padded base64 strings (missing trailing ===), base64-js does not\n  while (str.length % 4 !== 0) {\n    str = str + '='\n  }\n  return str\n}\n\nfunction stringtrim (str) {\n  if (str.trim) return str.trim()\n  return str.replace(/^\\s+|\\s+$/g, '')\n}\n\nfunction toHex (n) {\n  if (n < 16) return '0' + n.toString(16)\n  return n.toString(16)\n}\n\nfunction utf8ToBytes (string, units) {\n  units = units || Infinity\n  var codePoint\n  var length = string.length\n  var leadSurrogate = null\n  var bytes = []\n\n  for (var i = 0; i < length; ++i) {\n    codePoint = string.charCodeAt(i)\n\n    // is surrogate component\n    if (codePoint > 0xD7FF && codePoint < 0xE000) {\n      // last char was a lead\n      if (!leadSurrogate) {\n        // no lead yet\n        if (codePoint > 0xDBFF) {\n          // unexpected trail\n          if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)\n          continue\n        } else if (i + 1 === length) {\n          // unpaired lead\n          if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)\n          continue\n        }\n\n        // valid lead\n        leadSurrogate = codePoint\n\n        continue\n      }\n\n      // 2 leads in a row\n      if (codePoint < 0xDC00) {\n        if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)\n        leadSurrogate = codePoint\n        continue\n      }\n\n      // valid surrogate pair\n      codePoint = (leadSurrogate - 0xD800 << 10 | codePoint - 0xDC00) + 0x10000\n    } else if (leadSurrogate) {\n      // valid bmp char, but last char was a lead\n      if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)\n    }\n\n    leadSurrogate = null\n\n    // encode utf8\n    if (codePoint < 0x80) {\n      if ((units -= 1) < 0) break\n      bytes.push(codePoint)\n    } else if (codePoint < 0x800) {\n      if ((units -= 2) < 0) break\n      bytes.push(\n        codePoint >> 0x6 | 0xC0,\n        codePoint & 0x3F | 0x80\n      )\n    } else if (codePoint < 0x10000) {\n      if ((units -= 3) < 0) break\n      bytes.push(\n        codePoint >> 0xC | 0xE0,\n        codePoint >> 0x6 & 0x3F | 0x80,\n        codePoint & 0x3F | 0x80\n      )\n    } else if (codePoint < 0x110000) {\n      if ((units -= 4) < 0) break\n      bytes.push(\n        codePoint >> 0x12 | 0xF0,\n        codePoint >> 0xC & 0x3F | 0x80,\n        codePoint >> 0x6 & 0x3F | 0x80,\n        codePoint & 0x3F | 0x80\n      )\n    } else {\n      throw new Error('Invalid code point')\n    }\n  }\n\n  return bytes\n}\n\nfunction asciiToBytes (str) {\n  var byteArray = []\n  for (var i = 0; i < str.length; ++i) {\n    // Node's code seems to be doing this and not & 0x7F..\n    byteArray.push(str.charCodeAt(i) & 0xFF)\n  }\n  return byteArray\n}\n\nfunction utf16leToBytes (str, units) {\n  var c, hi, lo\n  var byteArray = []\n  for (var i = 0; i < str.length; ++i) {\n    if ((units -= 2) < 0) break\n\n    c = str.charCodeAt(i)\n    hi = c >> 8\n    lo = c % 256\n    byteArray.push(lo)\n    byteArray.push(hi)\n  }\n\n  return byteArray\n}\n\nfunction base64ToBytes (str) {\n  return base64.toByteArray(base64clean(str))\n}\n\nfunction blitBuffer (src, dst, offset, length) {\n  for (var i = 0; i < length; ++i) {\n    if ((i + offset >= dst.length) || (i >= src.length)) break\n    dst[i + offset] = src[i]\n  }\n  return i\n}\n\nfunction isnan (val) {\n  return val !== val // eslint-disable-line no-self-compare\n}\n","'use strict';\n\nvar d        = require('d')\n  , callable = require('es5-ext/object/valid-callable')\n\n  , apply = Function.prototype.apply, call = Function.prototype.call\n  , create = Object.create, defineProperty = Object.defineProperty\n  , defineProperties = Object.defineProperties\n  , hasOwnProperty = Object.prototype.hasOwnProperty\n  , descriptor = { configurable: true, enumerable: false, writable: true }\n\n  , on, once, off, emit, methods, descriptors, base;\n\non = function (type, listener) {\n\tvar data;\n\n\tcallable(listener);\n\n\tif (!hasOwnProperty.call(this, '__ee__')) {\n\t\tdata = descriptor.value = create(null);\n\t\tdefineProperty(this, '__ee__', descriptor);\n\t\tdescriptor.value = null;\n\t} else {\n\t\tdata = this.__ee__;\n\t}\n\tif (!data[type]) data[type] = listener;\n\telse if (typeof data[type] === 'object') data[type].push(listener);\n\telse data[type] = [data[type], listener];\n\n\treturn this;\n};\n\nonce = function (type, listener) {\n\tvar once, self;\n\n\tcallable(listener);\n\tself = this;\n\ton.call(this, type, once = function () {\n\t\toff.call(self, type, once);\n\t\tapply.call(listener, this, arguments);\n\t});\n\n\tonce.__eeOnceListener__ = listener;\n\treturn this;\n};\n\noff = function (type, listener) {\n\tvar data, listeners, candidate, i;\n\n\tcallable(listener);\n\n\tif (!hasOwnProperty.call(this, '__ee__')) return this;\n\tdata = this.__ee__;\n\tif (!data[type]) return this;\n\tlisteners = data[type];\n\n\tif (typeof listeners === 'object') {\n\t\tfor (i = 0; (candidate = listeners[i]); ++i) {\n\t\t\tif ((candidate === listener) ||\n\t\t\t\t\t(candidate.__eeOnceListener__ === listener)) {\n\t\t\t\tif (listeners.length === 2) data[type] = listeners[i ? 0 : 1];\n\t\t\t\telse listeners.splice(i, 1);\n\t\t\t}\n\t\t}\n\t} else {\n\t\tif ((listeners === listener) ||\n\t\t\t\t(listeners.__eeOnceListener__ === listener)) {\n\t\t\tdelete data[type];\n\t\t}\n\t}\n\n\treturn this;\n};\n\nemit = function (type) {\n\tvar i, l, listener, listeners, args;\n\n\tif (!hasOwnProperty.call(this, '__ee__')) return;\n\tlisteners = this.__ee__[type];\n\tif (!listeners) return;\n\n\tif (typeof listeners === 'object') {\n\t\tl = arguments.length;\n\t\targs = new Array(l - 1);\n\t\tfor (i = 1; i < l; ++i) args[i - 1] = arguments[i];\n\n\t\tlisteners = listeners.slice();\n\t\tfor (i = 0; (listener = listeners[i]); ++i) {\n\t\t\tapply.call(listener, this, args);\n\t\t}\n\t} else {\n\t\tswitch (arguments.length) {\n\t\tcase 1:\n\t\t\tcall.call(listeners, this);\n\t\t\tbreak;\n\t\tcase 2:\n\t\t\tcall.call(listeners, this, arguments[1]);\n\t\t\tbreak;\n\t\tcase 3:\n\t\t\tcall.call(listeners, this, arguments[1], arguments[2]);\n\t\t\tbreak;\n\t\tdefault:\n\t\t\tl = arguments.length;\n\t\t\targs = new Array(l - 1);\n\t\t\tfor (i = 1; i < l; ++i) {\n\t\t\t\targs[i - 1] = arguments[i];\n\t\t\t}\n\t\t\tapply.call(listeners, this, args);\n\t\t}\n\t}\n};\n\nmethods = {\n\ton: on,\n\tonce: once,\n\toff: off,\n\temit: emit\n};\n\ndescriptors = {\n\ton: d(on),\n\tonce: d(once),\n\toff: d(off),\n\temit: d(emit)\n};\n\nbase = defineProperties({}, descriptors);\n\nmodule.exports = exports = function (o) {\n\treturn (o == null) ? create(base) : defineProperties(Object(o), descriptors);\n};\nexports.methods = methods;\n","\"use strict\";\n\nObject.defineProperty(exports, \"__esModule\", {\n    value: true\n});\nexports.proxyMouse = proxyMouse;\nexports.clone = clone;\n// import 'babelify/polyfill'; // needed for Object.assign\n\nexports.default = {\n    proxyMouse: proxyMouse\n};\n\n/**\n * Start proxying all mouse events that occur on the target node to each node in\n * a set of tracked nodes.\n *\n * The items in tracked do not strictly have to be DOM Nodes, but they do have\n * to have dispatchEvent, getBoundingClientRect, and getClientRects methods.\n *\n * @param target {Node} The node on which to listen for mouse events.\n * @param tracked {Node[]} A (possibly mutable) array of nodes to which to proxy\n *                         events.\n */\n\nfunction proxyMouse(target, tracked) {\n    function dispatch(e) {\n        // We walk through the set of tracked elements in reverse order so that\n        // events are sent to those most recently added first.\n        //\n        // This is the least surprising behaviour as it simulates the way the\n        // browser would work if items added later were drawn \"on top of\"\n        // earlier ones.\n        for (var i = tracked.length - 1; i >= 0; i--) {\n            var t = tracked[i];\n            var x = e.clientX;\n            var y = e.clientY;\n\n            if (e.touches && e.touches.length) {\n                x = e.touches[0].clientX;\n                y = e.touches[0].clientY;\n            }\n\n            if (!contains(t, target, x, y)) {\n                continue;\n            }\n\n            // The event targets this mark, so dispatch a cloned event:\n            t.dispatchEvent(clone(e));\n            // We only dispatch the cloned event to the first matching mark.\n            break;\n        }\n    }\n\n    if (target.nodeName === \"iframe\" || target.nodeName === \"IFRAME\") {\n\n        try {\n            // Try to get the contents if same domain\n            this.target = target.contentDocument;\n        } catch (err) {\n            this.target = target;\n        }\n    } else {\n        this.target = target;\n    }\n\n    var _arr = ['mouseup', 'mousedown', 'click', 'touchstart'];\n    for (var _i = 0; _i < _arr.length; _i++) {\n        var ev = _arr[_i];\n        this.target.addEventListener(ev, function (e) {\n            return dispatch(e);\n        }, false);\n    }\n}\n\n/**\n * Clone a mouse event object.\n *\n * @param e {MouseEvent} A mouse event object to clone.\n * @returns {MouseEvent}\n */\nfunction clone(e) {\n    var opts = Object.assign({}, e, { bubbles: false });\n    try {\n        return new MouseEvent(e.type, opts);\n    } catch (err) {\n        // compat: webkit\n        var copy = document.createEvent('MouseEvents');\n        copy.initMouseEvent(e.type, false, opts.cancelable, opts.view, opts.detail, opts.screenX, opts.screenY, opts.clientX, opts.clientY, opts.ctrlKey, opts.altKey, opts.shiftKey, opts.metaKey, opts.button, opts.relatedTarget);\n        return copy;\n    }\n}\n\n/**\n * Check if the item contains the point denoted by the passed coordinates\n * @param item {Object} An object with getBoundingClientRect and getClientRects\n *                      methods.\n * @param x {Number}\n * @param y {Number}\n * @returns {Boolean}\n */\nfunction contains(item, target, x, y) {\n    // offset\n    var offset = target.getBoundingClientRect();\n\n    function rectContains(r, x, y) {\n        var top = r.top - offset.top;\n        var left = r.left - offset.left;\n        var bottom = top + r.height;\n        var right = left + r.width;\n        return top <= y && left <= x && bottom > y && right > x;\n    }\n\n    // Check overall bounding box first\n    var rect = item.getBoundingClientRect();\n    if (!rectContains(rect, x, y)) {\n        return false;\n    }\n\n    // Then continue to check each child rect\n    var rects = item.getClientRects();\n    for (var i = 0, len = rects.length; i < len; i++) {\n        if (rectContains(rects[i], x, y)) {\n            return true;\n        }\n    }\n    return false;\n}\n","import EventEmitter from \"event-emitter\";\nimport {extend, borders, uuid, isNumber, bounds, defer, createBlobUrl, revokeBlobUrl} from \"../../utils/core\";\nimport EpubCFI from \"../../epubcfi\";\nimport Contents from \"../../contents\";\nimport { EVENTS } from \"../../utils/constants\";\nimport { Pane, Highlight, Underline } from \"marks-pane\";\n\nclass IframeView {\n\tconstructor(section, options) {\n\t\tthis.settings = extend({\n\t\t\tignoreClass : \"\",\n\t\t\taxis: undefined, //options.layout && options.layout.props.flow === \"scrolled\" ? \"vertical\" : \"horizontal\",\n\t\t\tdirection: undefined,\n\t\t\twidth: 0,\n\t\t\theight: 0,\n\t\t\tlayout: undefined,\n\t\t\tglobalLayoutProperties: {},\n\t\t\tmethod: undefined,\n\t\t\tforceRight: false,\n\t\t\tallowScriptedContent: false,\n\t\t\tallowPopups: false\n\t\t}, options || {});\n\n\t\tthis.id = \"epubjs-view-\" + uuid();\n\t\tthis.section = section;\n\t\tthis.index = section.index;\n\n\t\tthis.element = this.container(this.settings.axis);\n\n\t\tthis.added = false;\n\t\tthis.displayed = false;\n\t\tthis.rendered = false;\n\n\t\t// this.width  = this.settings.width;\n\t\t// this.height = this.settings.height;\n\n\t\tthis.fixedWidth  = 0;\n\t\tthis.fixedHeight = 0;\n\n\t\t// Blank Cfi for Parsing\n\t\tthis.epubcfi = new EpubCFI();\n\n\t\tthis.layout = this.settings.layout;\n\t\t// Dom events to listen for\n\t\t// this.listenedEvents = [\"keydown\", \"keyup\", \"keypressed\", \"mouseup\", \"mousedown\", \"click\", \"touchend\", \"touchstart\"];\n\n\t\tthis.pane = undefined;\n\t\tthis.highlights = {};\n\t\tthis.underlines = {};\n\t\tthis.marks = {};\n\n\t}\n\n\tcontainer(axis) {\n\t\tvar element = document.createElement(\"div\");\n\n\t\telement.classList.add(\"epub-view\");\n\n\t\t// this.element.style.minHeight = \"100px\";\n\t\telement.style.height = \"0px\";\n\t\telement.style.width = \"0px\";\n\t\telement.style.overflow = \"hidden\";\n\t\telement.style.position = \"relative\";\n\t\telement.style.display = \"block\";\n\n\t\tif(axis && axis == \"horizontal\"){\n\t\t\telement.style.flex = \"none\";\n\t\t} else {\n\t\t\telement.style.flex = \"initial\";\n\t\t}\n\n\t\treturn element;\n\t}\n\n\tcreate() {\n\n\t\tif(this.iframe) {\n\t\t\treturn this.iframe;\n\t\t}\n\n\t\tif(!this.element) {\n\t\t\tthis.element = this.createContainer();\n\t\t}\n\n\t\tthis.iframe = document.createElement(\"iframe\");\n\t\tthis.iframe.id = this.id;\n\t\tthis.iframe.scrolling = \"no\"; // Might need to be removed: breaks ios width calculations\n\t\tthis.iframe.style.overflow = \"hidden\";\n\t\tthis.iframe.seamless = \"seamless\";\n\t\t// Back up if seamless isn't supported\n\t\tthis.iframe.style.border = \"none\";\n\n\t\t// sandbox\n\t\tthis.iframe.sandbox = \"allow-same-origin\";\n\t\tif (this.settings.allowScriptedContent) {\n\t\t\tthis.iframe.sandbox += \" allow-scripts\";\n\t\t}\n\t\tif (this.settings.allowPopups) {\n\t\t\tthis.iframe.sandbox += \" allow-popups\";\n\t\t}\n\t\t\n\t\tthis.iframe.setAttribute(\"enable-annotation\", \"true\");\n\n\t\tthis.resizing = true;\n\n\t\t// this.iframe.style.display = \"none\";\n\t\tthis.element.style.visibility = \"hidden\";\n\t\tthis.iframe.style.visibility = \"hidden\";\n\n\t\tthis.iframe.style.width = \"0\";\n\t\tthis.iframe.style.height = \"0\";\n\t\tthis._width = 0;\n\t\tthis._height = 0;\n\n\t\tthis.element.setAttribute(\"ref\", this.index);\n\n\t\tthis.added = true;\n\n\t\tthis.elementBounds = bounds(this.element);\n\n\t\t// if(width || height){\n\t\t//   this.resize(width, height);\n\t\t// } else if(this.width && this.height){\n\t\t//   this.resize(this.width, this.height);\n\t\t// } else {\n\t\t//   this.iframeBounds = bounds(this.iframe);\n\t\t// }\n\n\n\t\tif((\"srcdoc\" in this.iframe)) {\n\t\t\tthis.supportsSrcdoc = true;\n\t\t} else {\n\t\t\tthis.supportsSrcdoc = false;\n\t\t}\n\n\t\tif (!this.settings.method) {\n\t\t\tthis.settings.method = this.supportsSrcdoc ? \"srcdoc\" : \"write\";\n\t\t}\n\n\t\treturn this.iframe;\n\t}\n\n\trender(request, show) {\n\n\t\t// view.onLayout = this.layout.format.bind(this.layout);\n\t\tthis.create();\n\n\t\t// Fit to size of the container, apply padding\n\t\tthis.size();\n\n\t\tif(!this.sectionRender) {\n\t\t\tthis.sectionRender = this.section.render(request);\n\t\t}\n\n\t\t// Render Chain\n\t\treturn this.sectionRender\n\t\t\t.then(function(contents){\n\t\t\t\treturn this.load(contents);\n\t\t\t}.bind(this))\n\t\t\t.then(function(){\n\n\t\t\t\t// find and report the writingMode axis\n\t\t\t\tlet writingMode = this.contents.writingMode();\n\n\t\t\t\t// Set the axis based on the flow and writing mode\n\t\t\t\tlet axis;\n\t\t\t\tif (this.settings.flow === \"scrolled\") {\n\t\t\t\t\taxis = (writingMode.indexOf(\"vertical\") === 0) ? \"horizontal\" : \"vertical\";\n\t\t\t\t} else {\n\t\t\t\t\taxis = (writingMode.indexOf(\"vertical\") === 0) ? \"vertical\" : \"horizontal\";\n\t\t\t\t}\n\n\t\t\t\tif (writingMode.indexOf(\"vertical\") === 0 && this.settings.flow === \"paginated\") {\n\t\t\t\t\tthis.layout.delta = this.layout.height;\n\t\t\t\t}\n\n\t\t\t\tthis.setAxis(axis);\n\t\t\t\tthis.emit(EVENTS.VIEWS.AXIS, axis);\n\n\t\t\t\tthis.setWritingMode(writingMode);\n\t\t\t\tthis.emit(EVENTS.VIEWS.WRITING_MODE, writingMode);\n\n\n\t\t\t\t// apply the layout function to the contents\n\t\t\t\tthis.layout.format(this.contents, this.section, this.axis);\n\n\t\t\t\t// Listen for events that require an expansion of the iframe\n\t\t\t\tthis.addListeners();\n\n\t\t\t\treturn new Promise((resolve, reject) => {\n\t\t\t\t\t// Expand the iframe to the full size of the content\n\t\t\t\t\tthis.expand();\n\n\t\t\t\t\tif (this.settings.forceRight) {\n\t\t\t\t\t\tthis.element.style.marginLeft = this.width() + \"px\";\n\t\t\t\t\t}\n\t\t\t\t\tresolve();\n\t\t\t\t});\n\n\t\t\t}.bind(this), function(e){\n\t\t\t\tthis.emit(EVENTS.VIEWS.LOAD_ERROR, e);\n\t\t\t\treturn new Promise((resolve, reject) => {\n\t\t\t\t\treject(e);\n\t\t\t\t});\n\t\t\t}.bind(this))\n\t\t\t.then(function() {\n\t\t\t\tthis.emit(EVENTS.VIEWS.RENDERED, this.section);\n\t\t\t}.bind(this));\n\n\t}\n\n\treset () {\n\t\tif (this.iframe) {\n\t\t\tthis.iframe.style.width = \"0\";\n\t\t\tthis.iframe.style.height = \"0\";\n\t\t\tthis._width = 0;\n\t\t\tthis._height = 0;\n\t\t\tthis._textWidth = undefined;\n\t\t\tthis._contentWidth = undefined;\n\t\t\tthis._textHeight = undefined;\n\t\t\tthis._contentHeight = undefined;\n\t\t}\n\t\tthis._needsReframe = true;\n\t}\n\n\t// Determine locks base on settings\n\tsize(_width, _height) {\n\t\tvar width = _width || this.settings.width;\n\t\tvar height = _height || this.settings.height;\n\n\t\tif(this.layout.name === \"pre-paginated\") {\n\t\t\tthis.lock(\"both\", width, height);\n\t\t} else if(this.settings.axis === \"horizontal\") {\n\t\t\tthis.lock(\"height\", width, height);\n\t\t} else {\n\t\t\tthis.lock(\"width\", width, height);\n\t\t}\n\n\t\tthis.settings.width = width;\n\t\tthis.settings.height = height;\n\t}\n\n\t// Lock an axis to element dimensions, taking borders into account\n\tlock(what, width, height) {\n\t\tvar elBorders = borders(this.element);\n\t\tvar iframeBorders;\n\n\t\tif(this.iframe) {\n\t\t\tiframeBorders = borders(this.iframe);\n\t\t} else {\n\t\t\tiframeBorders = {width: 0, height: 0};\n\t\t}\n\n\t\tif(what == \"width\" && isNumber(width)){\n\t\t\tthis.lockedWidth = width - elBorders.width - iframeBorders.width;\n\t\t\t// this.resize(this.lockedWidth, width); //  width keeps ratio correct\n\t\t}\n\n\t\tif(what == \"height\" && isNumber(height)){\n\t\t\tthis.lockedHeight = height - elBorders.height - iframeBorders.height;\n\t\t\t// this.resize(width, this.lockedHeight);\n\t\t}\n\n\t\tif(what === \"both\" &&\n\t\t\t isNumber(width) &&\n\t\t\t isNumber(height)){\n\n\t\t\tthis.lockedWidth = width - elBorders.width - iframeBorders.width;\n\t\t\tthis.lockedHeight = height - elBorders.height - iframeBorders.height;\n\t\t\t// this.resize(this.lockedWidth, this.lockedHeight);\n\t\t}\n\n\t\tif(this.displayed && this.iframe) {\n\n\t\t\t// this.contents.layout();\n\t\t\tthis.expand();\n\t\t}\n\n\n\n\t}\n\n\t// Resize a single axis based on content dimensions\n\texpand(force) {\n\t\tvar width = this.lockedWidth;\n\t\tvar height = this.lockedHeight;\n\t\tvar columns;\n\n\t\tvar textWidth, textHeight;\n\n\t\tif(!this.iframe || this._expanding) return;\n\n\t\tthis._expanding = true;\n\n\t\tif(this.layout.name === \"pre-paginated\") {\n\t\t\twidth = this.layout.columnWidth;\n\t\t\theight = this.layout.height;\n\t\t}\n\t\t// Expand Horizontally\n\t\telse if(this.settings.axis === \"horizontal\") {\n\t\t\t// Get the width of the text\n\t\t\twidth = this.contents.textWidth();\n\n\t\t\tif (width % this.layout.pageWidth > 0) {\n\t\t\t\twidth = Math.ceil(width / this.layout.pageWidth) * this.layout.pageWidth;\n\t\t\t}\n\n\t\t\tif (this.settings.forceEvenPages) {\n\t\t\t\tcolumns = (width / this.layout.pageWidth);\n\t\t\t\tif ( this.layout.divisor > 1 &&\n\t\t\t\t\t\t this.layout.name === \"reflowable\" &&\n\t\t\t\t\t\t(columns % 2 > 0)) {\n\t\t\t\t\t// add a blank page\n\t\t\t\t\twidth += this.layout.pageWidth;\n\t\t\t\t}\n\t\t\t}\n\n\t\t} // Expand Vertically\n\t\telse if(this.settings.axis === \"vertical\") {\n\t\t\theight = this.contents.textHeight();\n\t\t\tif (this.settings.flow === \"paginated\" &&\n\t\t\t\theight % this.layout.height > 0) {\n\t\t\t\theight = Math.ceil(height / this.layout.height) * this.layout.height;\n\t\t\t}\n\t\t}\n\n\t\t// Only Resize if dimensions have changed or\n\t\t// if Frame is still hidden, so needs reframing\n\t\tif(this._needsReframe || width != this._width || height != this._height){\n\t\t\tthis.reframe(width, height);\n\t\t}\n\n\t\tthis._expanding = false;\n\t}\n\n\treframe(width, height) {\n\t\tvar size;\n\n\t\tif(isNumber(width)){\n\t\t\tthis.element.style.width = width + \"px\";\n\t\t\tthis.iframe.style.width = width + \"px\";\n\t\t\tthis._width = width;\n\t\t}\n\n\t\tif(isNumber(height)){\n\t\t\tthis.element.style.height = height + \"px\";\n\t\t\tthis.iframe.style.height = height + \"px\";\n\t\t\tthis._height = height;\n\t\t}\n\n\t\tlet widthDelta = this.prevBounds ? width - this.prevBounds.width : width;\n\t\tlet heightDelta = this.prevBounds ? height - this.prevBounds.height : height;\n\n\t\tsize = {\n\t\t\twidth: width,\n\t\t\theight: height,\n\t\t\twidthDelta: widthDelta,\n\t\t\theightDelta: heightDelta,\n\t\t};\n\n\t\tthis.pane && this.pane.render();\n\n\t\trequestAnimationFrame(() => {\n\t\t\tlet mark;\n\t\t\tfor (let m in this.marks) {\n\t\t\t\tif (this.marks.hasOwnProperty(m)) {\n\t\t\t\t\tmark = this.marks[m];\n\t\t\t\t\tthis.placeMark(mark.element, mark.range);\n\t\t\t\t}\n\t\t\t}\n\t\t});\n\n\t\tthis.onResize(this, size);\n\n\t\tthis.emit(EVENTS.VIEWS.RESIZED, size);\n\n\t\tthis.prevBounds = size;\n\n\t\tthis.elementBounds = bounds(this.element);\n\n\t}\n\n\n\tload(contents) {\n\t\tvar loading = new defer();\n\t\tvar loaded = loading.promise;\n\n\t\tif(!this.iframe) {\n\t\t\tloading.reject(new Error(\"No Iframe Available\"));\n\t\t\treturn loaded;\n\t\t}\n\n\t\tthis.iframe.onload = function(event) {\n\n\t\t\tthis.onLoad(event, loading);\n\n\t\t}.bind(this);\n\n\t\tif (this.settings.method === \"blobUrl\") {\n\t\t\tthis.blobUrl = createBlobUrl(contents, \"application/xhtml+xml\");\n\t\t\tthis.iframe.src = this.blobUrl;\n\t\t\tthis.element.appendChild(this.iframe);\n\t\t} else if(this.settings.method === \"srcdoc\"){\n\t\t\tthis.iframe.srcdoc = contents;\n\t\t\tthis.element.appendChild(this.iframe);\n\t\t} else {\n\n\t\t\tthis.element.appendChild(this.iframe);\n\n\t\t\tthis.document = this.iframe.contentDocument;\n\n\t\t\tif(!this.document) {\n\t\t\t\tloading.reject(new Error(\"No Document Available\"));\n\t\t\t\treturn loaded;\n\t\t\t}\n\n\t\t\tthis.iframe.contentDocument.open();\n\t\t\t// For Cordova windows platform\n\t\t\tif(window.MSApp && MSApp.execUnsafeLocalFunction) {\n\t\t\t\tvar outerThis = this;\n\t\t\t\tMSApp.execUnsafeLocalFunction(function () {\n\t\t\t\t\touterThis.iframe.contentDocument.write(contents);\n\t\t\t\t});\n\t\t\t} else {\n\t\t\t\tthis.iframe.contentDocument.write(contents);\n\t\t\t}\n\t\t\tthis.iframe.contentDocument.close();\n\n\t\t}\n\n\t\treturn loaded;\n\t}\n\n\tonLoad(event, promise) {\n\n\t\tthis.window = this.iframe.contentWindow;\n\t\tthis.document = this.iframe.contentDocument;\n\n\t\tthis.contents = new Contents(this.document, this.document.body, this.section.cfiBase, this.section.index);\n\n\t\tthis.rendering = false;\n\n\t\tvar link = this.document.querySelector(\"link[rel='canonical']\");\n\t\tif (link) {\n\t\t\tlink.setAttribute(\"href\", this.section.canonical);\n\t\t} else {\n\t\t\tlink = this.document.createElement(\"link\");\n\t\t\tlink.setAttribute(\"rel\", \"canonical\");\n\t\t\tlink.setAttribute(\"href\", this.section.canonical);\n\t\t\tthis.document.querySelector(\"head\").appendChild(link);\n\t\t}\n\n\t\tthis.contents.on(EVENTS.CONTENTS.EXPAND, () => {\n\t\t\tif(this.displayed && this.iframe) {\n\t\t\t\tthis.expand();\n\t\t\t\tif (this.contents) {\n\t\t\t\t\tthis.layout.format(this.contents);\n\t\t\t\t}\n\t\t\t}\n\t\t});\n\n\t\tthis.contents.on(EVENTS.CONTENTS.RESIZE, (e) => {\n\t\t\tif(this.displayed && this.iframe) {\n\t\t\t\tthis.expand();\n\t\t\t\tif (this.contents) {\n\t\t\t\t\tthis.layout.format(this.contents);\n\t\t\t\t}\n\t\t\t}\n\t\t});\n\n\t\tpromise.resolve(this.contents);\n\t}\n\n\tsetLayout(layout) {\n\t\tthis.layout = layout;\n\n\t\tif (this.contents) {\n\t\t\tthis.layout.format(this.contents);\n\t\t\tthis.expand();\n\t\t}\n\t}\n\n\tsetAxis(axis) {\n\n\t\tthis.settings.axis = axis;\n\n\t\tif(axis == \"horizontal\"){\n\t\t\tthis.element.style.flex = \"none\";\n\t\t} else {\n\t\t\tthis.element.style.flex = \"initial\";\n\t\t}\n\n\t\tthis.size();\n\n\t}\n\n\tsetWritingMode(mode) {\n\t\t// this.element.style.writingMode = writingMode;\n\t\tthis.writingMode = mode;\n\t}\n\n\taddListeners() {\n\t\t//TODO: Add content listeners for expanding\n\t}\n\n\tremoveListeners(layoutFunc) {\n\t\t//TODO: remove content listeners for expanding\n\t}\n\n\tdisplay(request) {\n\t\tvar displayed = new defer();\n\n\t\tif (!this.displayed) {\n\n\t\t\tthis.render(request)\n\t\t\t\t.then(function () {\n\n\t\t\t\t\tthis.emit(EVENTS.VIEWS.DISPLAYED, this);\n\t\t\t\t\tthis.onDisplayed(this);\n\n\t\t\t\t\tthis.displayed = true;\n\t\t\t\t\tdisplayed.resolve(this);\n\n\t\t\t\t}.bind(this), function (err) {\n\t\t\t\t\tdisplayed.reject(err, this);\n\t\t\t\t});\n\n\t\t} else {\n\t\t\tdisplayed.resolve(this);\n\t\t}\n\n\n\t\treturn displayed.promise;\n\t}\n\n\tshow() {\n\n\t\tthis.element.style.visibility = \"visible\";\n\n\t\tif(this.iframe){\n\t\t\tthis.iframe.style.visibility = \"visible\";\n\n\t\t\t// Remind Safari to redraw the iframe\n\t\t\tthis.iframe.style.transform = \"translateZ(0)\";\n\t\t\tthis.iframe.offsetWidth;\n\t\t\tthis.iframe.style.transform = null;\n\t\t}\n\n\t\tthis.emit(EVENTS.VIEWS.SHOWN, this);\n\t}\n\n\thide() {\n\t\t// this.iframe.style.display = \"none\";\n\t\tthis.element.style.visibility = \"hidden\";\n\t\tthis.iframe.style.visibility = \"hidden\";\n\n\t\tthis.stopExpanding = true;\n\t\tthis.emit(EVENTS.VIEWS.HIDDEN, this);\n\t}\n\n\toffset() {\n\t\treturn {\n\t\t\ttop: this.element.offsetTop,\n\t\t\tleft: this.element.offsetLeft\n\t\t}\n\t}\n\n\twidth() {\n\t\treturn this._width;\n\t}\n\n\theight() {\n\t\treturn this._height;\n\t}\n\n\tposition() {\n\t\treturn this.element.getBoundingClientRect();\n\t}\n\n\tlocationOf(target) {\n\t\tvar parentPos = this.iframe.getBoundingClientRect();\n\t\tvar targetPos = this.contents.locationOf(target, this.settings.ignoreClass);\n\n\t\treturn {\n\t\t\t\"left\": targetPos.left,\n\t\t\t\"top\": targetPos.top\n\t\t};\n\t}\n\n\tonDisplayed(view) {\n\t\t// Stub, override with a custom functions\n\t}\n\n\tonResize(view, e) {\n\t\t// Stub, override with a custom functions\n\t}\n\n\tbounds(force) {\n\t\tif(force || !this.elementBounds) {\n\t\t\tthis.elementBounds = bounds(this.element);\n\t\t}\n\n\t\treturn this.elementBounds;\n\t}\n\n\thighlight(cfiRange, data={}, cb, className = \"epubjs-hl\", styles = {}) {\n\t\tif (!this.contents) {\n\t\t\treturn;\n\t\t}\n\t\tconst attributes = Object.assign({\"fill\": \"yellow\", \"fill-opacity\": \"0.3\", \"mix-blend-mode\": \"multiply\"}, styles);\n\t\tlet range = this.contents.range(cfiRange);\n\n\t\tlet emitter = () => {\n\t\t\tthis.emit(EVENTS.VIEWS.MARK_CLICKED, cfiRange, data);\n\t\t};\n\n\t\tdata[\"epubcfi\"] = cfiRange;\n\n\t\tif (!this.pane) {\n\t\t\tthis.pane = new Pane(this.iframe, this.element);\n\t\t}\n\n\t\tlet m = new Highlight(range, className, data, attributes);\n\t\tlet h = this.pane.addMark(m);\n\n\t\tthis.highlights[cfiRange] = { \"mark\": h, \"element\": h.element, \"listeners\": [emitter, cb] };\n\n\t\th.element.setAttribute(\"ref\", className);\n\t\th.element.addEventListener(\"click\", emitter);\n\t\th.element.addEventListener(\"touchstart\", emitter);\n\n\t\tif (cb) {\n\t\t\th.element.addEventListener(\"click\", cb);\n\t\t\th.element.addEventListener(\"touchstart\", cb);\n\t\t}\n\t\treturn h;\n\t}\n\n\tunderline(cfiRange, data={}, cb, className = \"epubjs-ul\", styles = {}) {\n\t\tif (!this.contents) {\n\t\t\treturn;\n\t\t}\n\t\tconst attributes = Object.assign({\"stroke\": \"black\", \"stroke-opacity\": \"0.3\", \"mix-blend-mode\": \"multiply\"}, styles);\n\t\tlet range = this.contents.range(cfiRange);\n\t\tlet emitter = () => {\n\t\t\tthis.emit(EVENTS.VIEWS.MARK_CLICKED, cfiRange, data);\n\t\t};\n\n\t\tdata[\"epubcfi\"] = cfiRange;\n\n\t\tif (!this.pane) {\n\t\t\tthis.pane = new Pane(this.iframe, this.element);\n\t\t}\n\n\t\tlet m = new Underline(range, className, data, attributes);\n\t\tlet h = this.pane.addMark(m);\n\n\t\tthis.underlines[cfiRange] = { \"mark\": h, \"element\": h.element, \"listeners\": [emitter, cb] };\n\n\t\th.element.setAttribute(\"ref\", className);\n\t\th.element.addEventListener(\"click\", emitter);\n\t\th.element.addEventListener(\"touchstart\", emitter);\n\n\t\tif (cb) {\n\t\t\th.element.addEventListener(\"click\", cb);\n\t\t\th.element.addEventListener(\"touchstart\", cb);\n\t\t}\n\t\treturn h;\n\t}\n\n\tmark(cfiRange, data={}, cb) {\n\t\tif (!this.contents) {\n\t\t\treturn;\n\t\t}\n\n\t\tif (cfiRange in this.marks) {\n\t\t\tlet item = this.marks[cfiRange];\n\t\t\treturn item;\n\t\t}\n\n\t\tlet range = this.contents.range(cfiRange);\n\t\tif (!range) {\n\t\t\treturn;\n\t\t}\n\t\tlet container = range.commonAncestorContainer;\n\t\tlet parent = (container.nodeType === 1) ? container : container.parentNode;\n\n\t\tlet emitter = (e) => {\n\t\t\tthis.emit(EVENTS.VIEWS.MARK_CLICKED, cfiRange, data);\n\t\t};\n\n\t\tif (range.collapsed && container.nodeType === 1) {\n\t\t\trange = new Range();\n\t\t\trange.selectNodeContents(container);\n\t\t} else if (range.collapsed) { // Webkit doesn't like collapsed ranges\n\t\t\trange = new Range();\n\t\t\trange.selectNodeContents(parent);\n\t\t}\n\n\t\tlet mark = this.document.createElement(\"a\");\n\t\tmark.setAttribute(\"ref\", \"epubjs-mk\");\n\t\tmark.style.position = \"absolute\";\n\n\t\tmark.dataset[\"epubcfi\"] = cfiRange;\n\n\t\tif (data) {\n\t\t\tObject.keys(data).forEach((key) => {\n\t\t\t\tmark.dataset[key] = data[key];\n\t\t\t});\n\t\t}\n\n\t\tif (cb) {\n\t\t\tmark.addEventListener(\"click\", cb);\n\t\t\tmark.addEventListener(\"touchstart\", cb);\n\t\t}\n\n\t\tmark.addEventListener(\"click\", emitter);\n\t\tmark.addEventListener(\"touchstart\", emitter);\n\n\t\tthis.placeMark(mark, range);\n\n\t\tthis.element.appendChild(mark);\n\n\t\tthis.marks[cfiRange] = { \"element\": mark, \"range\": range, \"listeners\": [emitter, cb] };\n\n\t\treturn parent;\n\t}\n\n\tplaceMark(element, range) {\n\t\tlet top, right, left;\n\n\t\tif(this.layout.name === \"pre-paginated\" ||\n\t\t\tthis.settings.axis !== \"horizontal\") {\n\t\t\tlet pos = range.getBoundingClientRect();\n\t\t\ttop = pos.top;\n\t\t\tright = pos.right;\n\t\t} else {\n\t\t\t// Element might break columns, so find the left most element\n\t\t\tlet rects = range.getClientRects();\n\n\t\t\tlet rect;\n\t\t\tfor (var i = 0; i != rects.length; i++) {\n\t\t\t\trect = rects[i];\n\t\t\t\tif (!left || rect.left < left) {\n\t\t\t\t\tleft = rect.left;\n\t\t\t\t\t// right = rect.right;\n\t\t\t\t\tright = Math.ceil(left / this.layout.props.pageWidth) * this.layout.props.pageWidth - (this.layout.gap / 2);\n\t\t\t\t\ttop = rect.top;\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\n\t\telement.style.top = `${top}px`;\n\t\telement.style.left = `${right}px`;\n\t}\n\n\tunhighlight(cfiRange) {\n\t\tlet item;\n\t\tif (cfiRange in this.highlights) {\n\t\t\titem = this.highlights[cfiRange];\n\n\t\t\tthis.pane.removeMark(item.mark);\n\t\t\titem.listeners.forEach((l) => {\n\t\t\t\tif (l) {\n\t\t\t\t\titem.element.removeEventListener(\"click\", l);\n\t\t\t\t\titem.element.removeEventListener(\"touchstart\", l);\n\t\t\t\t};\n\t\t\t});\n\t\t\tdelete this.highlights[cfiRange];\n\t\t}\n\t}\n\n\tununderline(cfiRange) {\n\t\tlet item;\n\t\tif (cfiRange in this.underlines) {\n\t\t\titem = this.underlines[cfiRange];\n\t\t\tthis.pane.removeMark(item.mark);\n\t\t\titem.listeners.forEach((l) => {\n\t\t\t\tif (l) {\n\t\t\t\t\titem.element.removeEventListener(\"click\", l);\n\t\t\t\t\titem.element.removeEventListener(\"touchstart\", l);\n\t\t\t\t};\n\t\t\t});\n\t\t\tdelete this.underlines[cfiRange];\n\t\t}\n\t}\n\n\tunmark(cfiRange) {\n\t\tlet item;\n\t\tif (cfiRange in this.marks) {\n\t\t\titem = this.marks[cfiRange];\n\t\t\tthis.element.removeChild(item.element);\n\t\t\titem.listeners.forEach((l) => {\n\t\t\t\tif (l) {\n\t\t\t\t\titem.element.removeEventListener(\"click\", l);\n\t\t\t\t\titem.element.removeEventListener(\"touchstart\", l);\n\t\t\t\t};\n\t\t\t});\n\t\t\tdelete this.marks[cfiRange];\n\t\t}\n\t}\n\n\tdestroy() {\n\n\t\tfor (let cfiRange in this.highlights) {\n\t\t\tthis.unhighlight(cfiRange);\n\t\t}\n\n\t\tfor (let cfiRange in this.underlines) {\n\t\t\tthis.ununderline(cfiRange);\n\t\t}\n\n\t\tfor (let cfiRange in this.marks) {\n\t\t\tthis.unmark(cfiRange);\n\t\t}\n\n\t\tif (this.blobUrl) {\n\t\t\trevokeBlobUrl(this.blobUrl);\n\t\t}\n\n\t\tif(this.displayed){\n\t\t\tthis.displayed = false;\n\n\t\t\tthis.removeListeners();\n\t\t\tthis.contents.destroy();\n\n\t\t\tthis.stopExpanding = true;\n\t\t\tthis.element.removeChild(this.iframe);\n\n\t\t\tif (this.pane) {\n\t\t\t\tthis.pane.element.remove();\n\t\t\t\tthis.pane = undefined;\n\t\t\t}\n\n\t\t\tthis.iframe = undefined;\n\t\t\tthis.contents = undefined;\n\n\t\t\tthis._textWidth = null;\n\t\t\tthis._textHeight = null;\n\t\t\tthis._width = null;\n\t\t\tthis._height = null;\n\t\t}\n\n\t\t// this.element.style.height = \"0px\";\n\t\t// this.element.style.width = \"0px\";\n\t}\n}\n\nEventEmitter(IframeView.prototype);\n\nexport default IframeView;\n","// .dirname, .basename, and .extname methods are extracted from Node.js v8.11.1,\n// backported and transplited with Babel, with backwards-compat fixes\n\n// Copyright Joyent, Inc. and other Node contributors.\n//\n// Permission is hereby granted, free of charge, to any person obtaining a\n// copy of this software and associated documentation files (the\n// \"Software\"), to deal in the Software without restriction, including\n// without limitation the rights to use, copy, modify, merge, publish,\n// distribute, sublicense, and/or sell copies of the Software, and to permit\n// persons to whom the Software is furnished to do so, subject to the\n// following conditions:\n//\n// The above copyright notice and this permission notice shall be included\n// in all copies or substantial portions of the Software.\n//\n// THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS\n// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF\n// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN\n// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,\n// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR\n// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE\n// USE OR OTHER DEALINGS IN THE SOFTWARE.\n\n// resolves . and .. elements in a path array with directory names there\n// must be no slashes, empty elements, or device names (c:\\) in the array\n// (so also no leading and trailing slashes - it does not distinguish\n// relative and absolute paths)\nfunction normalizeArray(parts, allowAboveRoot) {\n  // if the path tries to go above the root, `up` ends up > 0\n  var up = 0;\n  for (var i = parts.length - 1; i >= 0; i--) {\n    var last = parts[i];\n    if (last === '.') {\n      parts.splice(i, 1);\n    } else if (last === '..') {\n      parts.splice(i, 1);\n      up++;\n    } else if (up) {\n      parts.splice(i, 1);\n      up--;\n    }\n  }\n\n  // if the path is allowed to go above the root, restore leading ..s\n  if (allowAboveRoot) {\n    for (; up--; up) {\n      parts.unshift('..');\n    }\n  }\n\n  return parts;\n}\n\n// path.resolve([from ...], to)\n// posix version\nexports.resolve = function() {\n  var resolvedPath = '',\n      resolvedAbsolute = false;\n\n  for (var i = arguments.length - 1; i >= -1 && !resolvedAbsolute; i--) {\n    var path = (i >= 0) ? arguments[i] : process.cwd();\n\n    // Skip empty and invalid entries\n    if (typeof path !== 'string') {\n      throw new TypeError('Arguments to path.resolve must be strings');\n    } else if (!path) {\n      continue;\n    }\n\n    resolvedPath = path + '/' + resolvedPath;\n    resolvedAbsolute = path.charAt(0) === '/';\n  }\n\n  // At this point the path should be resolved to a full absolute path, but\n  // handle relative paths to be safe (might happen when process.cwd() fails)\n\n  // Normalize the path\n  resolvedPath = normalizeArray(filter(resolvedPath.split('/'), function(p) {\n    return !!p;\n  }), !resolvedAbsolute).join('/');\n\n  return ((resolvedAbsolute ? '/' : '') + resolvedPath) || '.';\n};\n\n// path.normalize(path)\n// posix version\nexports.normalize = function(path) {\n  var isAbsolute = exports.isAbsolute(path),\n      trailingSlash = substr(path, -1) === '/';\n\n  // Normalize the path\n  path = normalizeArray(filter(path.split('/'), function(p) {\n    return !!p;\n  }), !isAbsolute).join('/');\n\n  if (!path && !isAbsolute) {\n    path = '.';\n  }\n  if (path && trailingSlash) {\n    path += '/';\n  }\n\n  return (isAbsolute ? '/' : '') + path;\n};\n\n// posix version\nexports.isAbsolute = function(path) {\n  return path.charAt(0) === '/';\n};\n\n// posix version\nexports.join = function() {\n  var paths = Array.prototype.slice.call(arguments, 0);\n  return exports.normalize(filter(paths, function(p, index) {\n    if (typeof p !== 'string') {\n      throw new TypeError('Arguments to path.join must be strings');\n    }\n    return p;\n  }).join('/'));\n};\n\n\n// path.relative(from, to)\n// posix version\nexports.relative = function(from, to) {\n  from = exports.resolve(from).substr(1);\n  to = exports.resolve(to).substr(1);\n\n  function trim(arr) {\n    var start = 0;\n    for (; start < arr.length; start++) {\n      if (arr[start] !== '') break;\n    }\n\n    var end = arr.length - 1;\n    for (; end >= 0; end--) {\n      if (arr[end] !== '') break;\n    }\n\n    if (start > end) return [];\n    return arr.slice(start, end - start + 1);\n  }\n\n  var fromParts = trim(from.split('/'));\n  var toParts = trim(to.split('/'));\n\n  var length = Math.min(fromParts.length, toParts.length);\n  var samePartsLength = length;\n  for (var i = 0; i < length; i++) {\n    if (fromParts[i] !== toParts[i]) {\n      samePartsLength = i;\n      break;\n    }\n  }\n\n  var outputParts = [];\n  for (var i = samePartsLength; i < fromParts.length; i++) {\n    outputParts.push('..');\n  }\n\n  outputParts = outputParts.concat(toParts.slice(samePartsLength));\n\n  return outputParts.join('/');\n};\n\nexports.sep = '/';\nexports.delimiter = ':';\n\nexports.dirname = function (path) {\n  if (typeof path !== 'string') path = path + '';\n  if (path.length === 0) return '.';\n  var code = path.charCodeAt(0);\n  var hasRoot = code === 47 /*/*/;\n  var end = -1;\n  var matchedSlash = true;\n  for (var i = path.length - 1; i >= 1; --i) {\n    code = path.charCodeAt(i);\n    if (code === 47 /*/*/) {\n        if (!matchedSlash) {\n          end = i;\n          break;\n        }\n      } else {\n      // We saw the first non-path separator\n      matchedSlash = false;\n    }\n  }\n\n  if (end === -1) return hasRoot ? '/' : '.';\n  if (hasRoot && end === 1) {\n    // return '//';\n    // Backwards-compat fix:\n    return '/';\n  }\n  return path.slice(0, end);\n};\n\nfunction basename(path) {\n  if (typeof path !== 'string') path = path + '';\n\n  var start = 0;\n  var end = -1;\n  var matchedSlash = true;\n  var i;\n\n  for (i = path.length - 1; i >= 0; --i) {\n    if (path.charCodeAt(i) === 47 /*/*/) {\n        // If we reached a path separator that was not part of a set of path\n        // separators at the end of the string, stop now\n        if (!matchedSlash) {\n          start = i + 1;\n          break;\n        }\n      } else if (end === -1) {\n      // We saw the first non-path separator, mark this as the end of our\n      // path component\n      matchedSlash = false;\n      end = i + 1;\n    }\n  }\n\n  if (end === -1) return '';\n  return path.slice(start, end);\n}\n\n// Uses a mixed approach for backwards-compatibility, as ext behavior changed\n// in new Node.js versions, so only basename() above is backported here\nexports.basename = function (path, ext) {\n  var f = basename(path);\n  if (ext && f.substr(-1 * ext.length) === ext) {\n    f = f.substr(0, f.length - ext.length);\n  }\n  return f;\n};\n\nexports.extname = function (path) {\n  if (typeof path !== 'string') path = path + '';\n  var startDot = -1;\n  var startPart = 0;\n  var end = -1;\n  var matchedSlash = true;\n  // Track the state of characters (if any) we see before our first dot and\n  // after any path separator we find\n  var preDotState = 0;\n  for (var i = path.length - 1; i >= 0; --i) {\n    var code = path.charCodeAt(i);\n    if (code === 47 /*/*/) {\n        // If we reached a path separator that was not part of a set of path\n        // separators at the end of the string, stop now\n        if (!matchedSlash) {\n          startPart = i + 1;\n          break;\n        }\n        continue;\n      }\n    if (end === -1) {\n      // We saw the first non-path separator, mark this as the end of our\n      // extension\n      matchedSlash = false;\n      end = i + 1;\n    }\n    if (code === 46 /*.*/) {\n        // If this is our first dot, mark it as the start of our extension\n        if (startDot === -1)\n          startDot = i;\n        else if (preDotState !== 1)\n          preDotState = 1;\n    } else if (startDot !== -1) {\n      // We saw a non-dot and non-path separator before our dot, so we should\n      // have a good chance at having a non-empty extension\n      preDotState = -1;\n    }\n  }\n\n  if (startDot === -1 || end === -1 ||\n      // We saw a non-dot character immediately before the dot\n      preDotState === 0 ||\n      // The (right-most) trimmed path component is exactly '..'\n      preDotState === 1 && startDot === end - 1 && startDot === startPart + 1) {\n    return '';\n  }\n  return path.slice(startDot, end);\n};\n\nfunction filter (xs, f) {\n    if (xs.filter) return xs.filter(f);\n    var res = [];\n    for (var i = 0; i < xs.length; i++) {\n        if (f(xs[i], i, xs)) res.push(xs[i]);\n    }\n    return res;\n}\n\n// String.prototype.substr - negative index don't work in IE8\nvar substr = 'ab'.substr(-1) === 'b'\n    ? function (str, start, len) { return str.substr(start, len) }\n    : function (str, start, len) {\n        if (start < 0) start = str.length + start;\n        return str.substr(start, len);\n    }\n;\n","var NAMESPACE = require(\"./conventions\").NAMESPACE;\n\n//[4]   \tNameStartChar\t   ::=   \t\":\" | [A-Z] | \"_\" | [a-z] | [#xC0-#xD6] | [#xD8-#xF6] | [#xF8-#x2FF] | [#x370-#x37D] | [#x37F-#x1FFF] | [#x200C-#x200D] | [#x2070-#x218F] | [#x2C00-#x2FEF] | [#x3001-#xD7FF] | [#xF900-#xFDCF] | [#xFDF0-#xFFFD] | [#x10000-#xEFFFF]\n//[4a]   \tNameChar\t   ::=   \tNameStartChar | \"-\" | \".\" | [0-9] | #xB7 | [#x0300-#x036F] | [#x203F-#x2040]\n//[5]   \tName\t   ::=   \tNameStartChar (NameChar)*\nvar nameStartChar = /[A-Z_a-z\\xC0-\\xD6\\xD8-\\xF6\\u00F8-\\u02FF\\u0370-\\u037D\\u037F-\\u1FFF\\u200C-\\u200D\\u2070-\\u218F\\u2C00-\\u2FEF\\u3001-\\uD7FF\\uF900-\\uFDCF\\uFDF0-\\uFFFD]///\\u10000-\\uEFFFF\nvar nameChar = new RegExp(\"[\\\\-\\\\.0-9\"+nameStartChar.source.slice(1,-1)+\"\\\\u00B7\\\\u0300-\\\\u036F\\\\u203F-\\\\u2040]\");\nvar tagNamePattern = new RegExp('^'+nameStartChar.source+nameChar.source+'*(?:\\:'+nameStartChar.source+nameChar.source+'*)?$');\n//var tagNamePattern = /^[a-zA-Z_][\\w\\-\\.]*(?:\\:[a-zA-Z_][\\w\\-\\.]*)?$/\n//var handlers = 'resolveEntity,getExternalSubset,characters,endDocument,endElement,endPrefixMapping,ignorableWhitespace,processingInstruction,setDocumentLocator,skippedEntity,startDocument,startElement,startPrefixMapping,notationDecl,unparsedEntityDecl,error,fatalError,warning,attributeDecl,elementDecl,externalEntityDecl,internalEntityDecl,comment,endCDATA,endDTD,endEntity,startCDATA,startDTD,startEntity'.split(',')\n\n//S_TAG,\tS_ATTR,\tS_EQ,\tS_ATTR_NOQUOT_VALUE\n//S_ATTR_SPACE,\tS_ATTR_END,\tS_TAG_SPACE, S_TAG_CLOSE\nvar S_TAG = 0;//tag name offerring\nvar S_ATTR = 1;//attr name offerring\nvar S_ATTR_SPACE=2;//attr name end and space offer\nvar S_EQ = 3;//=space?\nvar S_ATTR_NOQUOT_VALUE = 4;//attr value(no quot value only)\nvar S_ATTR_END = 5;//attr value end and no space(quot end)\nvar S_TAG_SPACE = 6;//(attr value end || tag end ) && (space offer)\nvar S_TAG_CLOSE = 7;//closed el<el />\n\n/**\n * Creates an error that will not be caught by XMLReader aka the SAX parser.\n *\n * @param {string} message\n * @param {any?} locator Optional, can provide details about the location in the source\n * @constructor\n */\nfunction ParseError(message, locator) {\n\tthis.message = message\n\tthis.locator = locator\n\tif(Error.captureStackTrace) Error.captureStackTrace(this, ParseError);\n}\nParseError.prototype = new Error();\nParseError.prototype.name = ParseError.name\n\nfunction XMLReader(){\n\n}\n\nXMLReader.prototype = {\n\tparse:function(source,defaultNSMap,entityMap){\n\t\tvar domBuilder = this.domBuilder;\n\t\tdomBuilder.startDocument();\n\t\t_copy(defaultNSMap ,defaultNSMap = {})\n\t\tparse(source,defaultNSMap,entityMap,\n\t\t\t\tdomBuilder,this.errorHandler);\n\t\tdomBuilder.endDocument();\n\t}\n}\nfunction parse(source,defaultNSMapCopy,entityMap,domBuilder,errorHandler){\n\tfunction fixedFromCharCode(code) {\n\t\t// String.prototype.fromCharCode does not supports\n\t\t// > 2 bytes unicode chars directly\n\t\tif (code > 0xffff) {\n\t\t\tcode -= 0x10000;\n\t\t\tvar surrogate1 = 0xd800 + (code >> 10)\n\t\t\t\t, surrogate2 = 0xdc00 + (code & 0x3ff);\n\n\t\t\treturn String.fromCharCode(surrogate1, surrogate2);\n\t\t} else {\n\t\t\treturn String.fromCharCode(code);\n\t\t}\n\t}\n\tfunction entityReplacer(a){\n\t\tvar k = a.slice(1,-1);\n\t\tif(k in entityMap){\n\t\t\treturn entityMap[k];\n\t\t}else if(k.charAt(0) === '#'){\n\t\t\treturn fixedFromCharCode(parseInt(k.substr(1).replace('x','0x')))\n\t\t}else{\n\t\t\terrorHandler.error('entity not found:'+a);\n\t\t\treturn a;\n\t\t}\n\t}\n\tfunction appendText(end){//has some bugs\n\t\tif(end>start){\n\t\t\tvar xt = source.substring(start,end).replace(/&#?\\w+;/g,entityReplacer);\n\t\t\tlocator&&position(start);\n\t\t\tdomBuilder.characters(xt,0,end-start);\n\t\t\tstart = end\n\t\t}\n\t}\n\tfunction position(p,m){\n\t\twhile(p>=lineEnd && (m = linePattern.exec(source))){\n\t\t\tlineStart = m.index;\n\t\t\tlineEnd = lineStart + m[0].length;\n\t\t\tlocator.lineNumber++;\n\t\t\t//console.log('line++:',locator,startPos,endPos)\n\t\t}\n\t\tlocator.columnNumber = p-lineStart+1;\n\t}\n\tvar lineStart = 0;\n\tvar lineEnd = 0;\n\tvar linePattern = /.*(?:\\r\\n?|\\n)|.*$/g\n\tvar locator = domBuilder.locator;\n\n\tvar parseStack = [{currentNSMap:defaultNSMapCopy}]\n\tvar closeMap = {};\n\tvar start = 0;\n\twhile(true){\n\t\ttry{\n\t\t\tvar tagStart = source.indexOf('<',start);\n\t\t\tif(tagStart<0){\n\t\t\t\tif(!source.substr(start).match(/^\\s*$/)){\n\t\t\t\t\tvar doc = domBuilder.doc;\n\t    \t\t\tvar text = doc.createTextNode(source.substr(start));\n\t    \t\t\tdoc.appendChild(text);\n\t    \t\t\tdomBuilder.currentElement = text;\n\t\t\t\t}\n\t\t\t\treturn;\n\t\t\t}\n\t\t\tif(tagStart>start){\n\t\t\t\tappendText(tagStart);\n\t\t\t}\n\t\t\tswitch(source.charAt(tagStart+1)){\n\t\t\tcase '/':\n\t\t\t\tvar end = source.indexOf('>',tagStart+3);\n\t\t\t\tvar tagName = source.substring(tagStart + 2, end).replace(/[ \\t\\n\\r]+$/g, '');\n\t\t\t\tvar config = parseStack.pop();\n\t\t\t\tif(end<0){\n\n\t        \t\ttagName = source.substring(tagStart+2).replace(/[\\s<].*/,'');\n\t        \t\terrorHandler.error(\"end tag name: \"+tagName+' is not complete:'+config.tagName);\n\t        \t\tend = tagStart+1+tagName.length;\n\t        \t}else if(tagName.match(/\\s</)){\n\t        \t\ttagName = tagName.replace(/[\\s<].*/,'');\n\t        \t\terrorHandler.error(\"end tag name: \"+tagName+' maybe not complete');\n\t        \t\tend = tagStart+1+tagName.length;\n\t\t\t\t}\n\t\t\t\tvar localNSMap = config.localNSMap;\n\t\t\t\tvar endMatch = config.tagName == tagName;\n\t\t\t\tvar endIgnoreCaseMach = endMatch || config.tagName&&config.tagName.toLowerCase() == tagName.toLowerCase()\n\t\t        if(endIgnoreCaseMach){\n\t\t        \tdomBuilder.endElement(config.uri,config.localName,tagName);\n\t\t\t\t\tif(localNSMap){\n\t\t\t\t\t\tfor(var prefix in localNSMap) {\n\t\t\t\t\t\t\tif (Object.prototype.hasOwnProperty.call(localNSMap, prefix)) {\n\t\t\t\t\t\t\t\tdomBuilder.endPrefixMapping(prefix);\n\t\t\t\t\t\t\t}\n\t\t\t\t\t\t}\n\t\t\t\t\t}\n\t\t\t\t\tif(!endMatch){\n\t\t            \terrorHandler.fatalError(\"end tag name: \"+tagName+' is not match the current start tagName:'+config.tagName ); // No known test case\n\t\t\t\t\t}\n\t\t        }else{\n\t\t        \tparseStack.push(config)\n\t\t        }\n\n\t\t\t\tend++;\n\t\t\t\tbreak;\n\t\t\t\t// end elment\n\t\t\tcase '?':// <?...?>\n\t\t\t\tlocator&&position(tagStart);\n\t\t\t\tend = parseInstruction(source,tagStart,domBuilder);\n\t\t\t\tbreak;\n\t\t\tcase '!':// <!doctype,<![CDATA,<!--\n\t\t\t\tlocator&&position(tagStart);\n\t\t\t\tend = parseDCC(source,tagStart,domBuilder,errorHandler);\n\t\t\t\tbreak;\n\t\t\tdefault:\n\t\t\t\tlocator&&position(tagStart);\n\t\t\t\tvar el = new ElementAttributes();\n\t\t\t\tvar currentNSMap = parseStack[parseStack.length-1].currentNSMap;\n\t\t\t\t//elStartEnd\n\t\t\t\tvar end = parseElementStartPart(source,tagStart,el,currentNSMap,entityReplacer,errorHandler);\n\t\t\t\tvar len = el.length;\n\n\n\t\t\t\tif(!el.closed && fixSelfClosed(source,end,el.tagName,closeMap)){\n\t\t\t\t\tel.closed = true;\n\t\t\t\t\tif(!entityMap.nbsp){\n\t\t\t\t\t\terrorHandler.warning('unclosed xml attribute');\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t\tif(locator && len){\n\t\t\t\t\tvar locator2 = copyLocator(locator,{});\n\t\t\t\t\t//try{//attribute position fixed\n\t\t\t\t\tfor(var i = 0;i<len;i++){\n\t\t\t\t\t\tvar a = el[i];\n\t\t\t\t\t\tposition(a.offset);\n\t\t\t\t\t\ta.locator = copyLocator(locator,{});\n\t\t\t\t\t}\n\t\t\t\t\tdomBuilder.locator = locator2\n\t\t\t\t\tif(appendElement(el,domBuilder,currentNSMap)){\n\t\t\t\t\t\tparseStack.push(el)\n\t\t\t\t\t}\n\t\t\t\t\tdomBuilder.locator = locator;\n\t\t\t\t}else{\n\t\t\t\t\tif(appendElement(el,domBuilder,currentNSMap)){\n\t\t\t\t\t\tparseStack.push(el)\n\t\t\t\t\t}\n\t\t\t\t}\n\n\t\t\t\tif (NAMESPACE.isHTML(el.uri) && !el.closed) {\n\t\t\t\t\tend = parseHtmlSpecialContent(source,end,el.tagName,entityReplacer,domBuilder)\n\t\t\t\t} else {\n\t\t\t\t\tend++;\n\t\t\t\t}\n\t\t\t}\n\t\t}catch(e){\n\t\t\tif (e instanceof ParseError) {\n\t\t\t\tthrow e;\n\t\t\t}\n\t\t\terrorHandler.error('element parse error: '+e)\n\t\t\tend = -1;\n\t\t}\n\t\tif(end>start){\n\t\t\tstart = end;\n\t\t}else{\n\t\t\t//TODO: 这里有可能sax回退，有位置错误风险\n\t\t\tappendText(Math.max(tagStart,start)+1);\n\t\t}\n\t}\n}\nfunction copyLocator(f,t){\n\tt.lineNumber = f.lineNumber;\n\tt.columnNumber = f.columnNumber;\n\treturn t;\n}\n\n/**\n * @see #appendElement(source,elStartEnd,el,selfClosed,entityReplacer,domBuilder,parseStack);\n * @return end of the elementStartPart(end of elementEndPart for selfClosed el)\n */\nfunction parseElementStartPart(source,start,el,currentNSMap,entityReplacer,errorHandler){\n\n\t/**\n\t * @param {string} qname\n\t * @param {string} value\n\t * @param {number} startIndex\n\t */\n\tfunction addAttribute(qname, value, startIndex) {\n\t\tif (el.attributeNames.hasOwnProperty(qname)) {\n\t\t\terrorHandler.fatalError('Attribute ' + qname + ' redefined')\n\t\t}\n\t\tel.addValue(qname, value, startIndex)\n\t}\n\tvar attrName;\n\tvar value;\n\tvar p = ++start;\n\tvar s = S_TAG;//status\n\twhile(true){\n\t\tvar c = source.charAt(p);\n\t\tswitch(c){\n\t\tcase '=':\n\t\t\tif(s === S_ATTR){//attrName\n\t\t\t\tattrName = source.slice(start,p);\n\t\t\t\ts = S_EQ;\n\t\t\t}else if(s === S_ATTR_SPACE){\n\t\t\t\ts = S_EQ;\n\t\t\t}else{\n\t\t\t\t//fatalError: equal must after attrName or space after attrName\n\t\t\t\tthrow new Error('attribute equal must after attrName'); // No known test case\n\t\t\t}\n\t\t\tbreak;\n\t\tcase '\\'':\n\t\tcase '\"':\n\t\t\tif(s === S_EQ || s === S_ATTR //|| s == S_ATTR_SPACE\n\t\t\t\t){//equal\n\t\t\t\tif(s === S_ATTR){\n\t\t\t\t\terrorHandler.warning('attribute value must after \"=\"')\n\t\t\t\t\tattrName = source.slice(start,p)\n\t\t\t\t}\n\t\t\t\tstart = p+1;\n\t\t\t\tp = source.indexOf(c,start)\n\t\t\t\tif(p>0){\n\t\t\t\t\tvalue = source.slice(start,p).replace(/&#?\\w+;/g,entityReplacer);\n\t\t\t\t\taddAttribute(attrName, value, start-1);\n\t\t\t\t\ts = S_ATTR_END;\n\t\t\t\t}else{\n\t\t\t\t\t//fatalError: no end quot match\n\t\t\t\t\tthrow new Error('attribute value no end \\''+c+'\\' match');\n\t\t\t\t}\n\t\t\t}else if(s == S_ATTR_NOQUOT_VALUE){\n\t\t\t\tvalue = source.slice(start,p).replace(/&#?\\w+;/g,entityReplacer);\n\t\t\t\t//console.log(attrName,value,start,p)\n\t\t\t\taddAttribute(attrName, value, start);\n\t\t\t\t//console.dir(el)\n\t\t\t\terrorHandler.warning('attribute \"'+attrName+'\" missed start quot('+c+')!!');\n\t\t\t\tstart = p+1;\n\t\t\t\ts = S_ATTR_END\n\t\t\t}else{\n\t\t\t\t//fatalError: no equal before\n\t\t\t\tthrow new Error('attribute value must after \"=\"'); // No known test case\n\t\t\t}\n\t\t\tbreak;\n\t\tcase '/':\n\t\t\tswitch(s){\n\t\t\tcase S_TAG:\n\t\t\t\tel.setTagName(source.slice(start,p));\n\t\t\tcase S_ATTR_END:\n\t\t\tcase S_TAG_SPACE:\n\t\t\tcase S_TAG_CLOSE:\n\t\t\t\ts =S_TAG_CLOSE;\n\t\t\t\tel.closed = true;\n\t\t\tcase S_ATTR_NOQUOT_VALUE:\n\t\t\tcase S_ATTR:\n\t\t\t\tbreak;\n\t\t\t\tcase S_ATTR_SPACE:\n\t\t\t\t\tel.closed = true;\n\t\t\t\tbreak;\n\t\t\t//case S_EQ:\n\t\t\tdefault:\n\t\t\t\tthrow new Error(\"attribute invalid close char('/')\") // No known test case\n\t\t\t}\n\t\t\tbreak;\n\t\tcase ''://end document\n\t\t\terrorHandler.error('unexpected end of input');\n\t\t\tif(s == S_TAG){\n\t\t\t\tel.setTagName(source.slice(start,p));\n\t\t\t}\n\t\t\treturn p;\n\t\tcase '>':\n\t\t\tswitch(s){\n\t\t\tcase S_TAG:\n\t\t\t\tel.setTagName(source.slice(start,p));\n\t\t\tcase S_ATTR_END:\n\t\t\tcase S_TAG_SPACE:\n\t\t\tcase S_TAG_CLOSE:\n\t\t\t\tbreak;//normal\n\t\t\tcase S_ATTR_NOQUOT_VALUE://Compatible state\n\t\t\tcase S_ATTR:\n\t\t\t\tvalue = source.slice(start,p);\n\t\t\t\tif(value.slice(-1) === '/'){\n\t\t\t\t\tel.closed  = true;\n\t\t\t\t\tvalue = value.slice(0,-1)\n\t\t\t\t}\n\t\t\tcase S_ATTR_SPACE:\n\t\t\t\tif(s === S_ATTR_SPACE){\n\t\t\t\t\tvalue = attrName;\n\t\t\t\t}\n\t\t\t\tif(s == S_ATTR_NOQUOT_VALUE){\n\t\t\t\t\terrorHandler.warning('attribute \"'+value+'\" missed quot(\")!');\n\t\t\t\t\taddAttribute(attrName, value.replace(/&#?\\w+;/g,entityReplacer), start)\n\t\t\t\t}else{\n\t\t\t\t\tif(!NAMESPACE.isHTML(currentNSMap['']) || !value.match(/^(?:disabled|checked|selected)$/i)){\n\t\t\t\t\t\terrorHandler.warning('attribute \"'+value+'\" missed value!! \"'+value+'\" instead!!')\n\t\t\t\t\t}\n\t\t\t\t\taddAttribute(value, value, start)\n\t\t\t\t}\n\t\t\t\tbreak;\n\t\t\tcase S_EQ:\n\t\t\t\tthrow new Error('attribute value missed!!');\n\t\t\t}\n//\t\t\tconsole.log(tagName,tagNamePattern,tagNamePattern.test(tagName))\n\t\t\treturn p;\n\t\t/*xml space '\\x20' | #x9 | #xD | #xA; */\n\t\tcase '\\u0080':\n\t\t\tc = ' ';\n\t\tdefault:\n\t\t\tif(c<= ' '){//space\n\t\t\t\tswitch(s){\n\t\t\t\tcase S_TAG:\n\t\t\t\t\tel.setTagName(source.slice(start,p));//tagName\n\t\t\t\t\ts = S_TAG_SPACE;\n\t\t\t\t\tbreak;\n\t\t\t\tcase S_ATTR:\n\t\t\t\t\tattrName = source.slice(start,p)\n\t\t\t\t\ts = S_ATTR_SPACE;\n\t\t\t\t\tbreak;\n\t\t\t\tcase S_ATTR_NOQUOT_VALUE:\n\t\t\t\t\tvar value = source.slice(start,p).replace(/&#?\\w+;/g,entityReplacer);\n\t\t\t\t\terrorHandler.warning('attribute \"'+value+'\" missed quot(\")!!');\n\t\t\t\t\taddAttribute(attrName, value, start)\n\t\t\t\tcase S_ATTR_END:\n\t\t\t\t\ts = S_TAG_SPACE;\n\t\t\t\t\tbreak;\n\t\t\t\t//case S_TAG_SPACE:\n\t\t\t\t//case S_EQ:\n\t\t\t\t//case S_ATTR_SPACE:\n\t\t\t\t//\tvoid();break;\n\t\t\t\t//case S_TAG_CLOSE:\n\t\t\t\t\t//ignore warning\n\t\t\t\t}\n\t\t\t}else{//not space\n//S_TAG,\tS_ATTR,\tS_EQ,\tS_ATTR_NOQUOT_VALUE\n//S_ATTR_SPACE,\tS_ATTR_END,\tS_TAG_SPACE, S_TAG_CLOSE\n\t\t\t\tswitch(s){\n\t\t\t\t//case S_TAG:void();break;\n\t\t\t\t//case S_ATTR:void();break;\n\t\t\t\t//case S_ATTR_NOQUOT_VALUE:void();break;\n\t\t\t\tcase S_ATTR_SPACE:\n\t\t\t\t\tvar tagName =  el.tagName;\n\t\t\t\t\tif (!NAMESPACE.isHTML(currentNSMap['']) || !attrName.match(/^(?:disabled|checked|selected)$/i)) {\n\t\t\t\t\t\terrorHandler.warning('attribute \"'+attrName+'\" missed value!! \"'+attrName+'\" instead2!!')\n\t\t\t\t\t}\n\t\t\t\t\taddAttribute(attrName, attrName, start);\n\t\t\t\t\tstart = p;\n\t\t\t\t\ts = S_ATTR;\n\t\t\t\t\tbreak;\n\t\t\t\tcase S_ATTR_END:\n\t\t\t\t\terrorHandler.warning('attribute space is required\"'+attrName+'\"!!')\n\t\t\t\tcase S_TAG_SPACE:\n\t\t\t\t\ts = S_ATTR;\n\t\t\t\t\tstart = p;\n\t\t\t\t\tbreak;\n\t\t\t\tcase S_EQ:\n\t\t\t\t\ts = S_ATTR_NOQUOT_VALUE;\n\t\t\t\t\tstart = p;\n\t\t\t\t\tbreak;\n\t\t\t\tcase S_TAG_CLOSE:\n\t\t\t\t\tthrow new Error(\"elements closed character '/' and '>' must be connected to\");\n\t\t\t\t}\n\t\t\t}\n\t\t}//end outer switch\n\t\t//console.log('p++',p)\n\t\tp++;\n\t}\n}\n/**\n * @return true if has new namespace define\n */\nfunction appendElement(el,domBuilder,currentNSMap){\n\tvar tagName = el.tagName;\n\tvar localNSMap = null;\n\t//var currentNSMap = parseStack[parseStack.length-1].currentNSMap;\n\tvar i = el.length;\n\twhile(i--){\n\t\tvar a = el[i];\n\t\tvar qName = a.qName;\n\t\tvar value = a.value;\n\t\tvar nsp = qName.indexOf(':');\n\t\tif(nsp>0){\n\t\t\tvar prefix = a.prefix = qName.slice(0,nsp);\n\t\t\tvar localName = qName.slice(nsp+1);\n\t\t\tvar nsPrefix = prefix === 'xmlns' && localName\n\t\t}else{\n\t\t\tlocalName = qName;\n\t\t\tprefix = null\n\t\t\tnsPrefix = qName === 'xmlns' && ''\n\t\t}\n\t\t//can not set prefix,because prefix !== ''\n\t\ta.localName = localName ;\n\t\t//prefix == null for no ns prefix attribute\n\t\tif(nsPrefix !== false){//hack!!\n\t\t\tif(localNSMap == null){\n\t\t\t\tlocalNSMap = {}\n\t\t\t\t//console.log(currentNSMap,0)\n\t\t\t\t_copy(currentNSMap,currentNSMap={})\n\t\t\t\t//console.log(currentNSMap,1)\n\t\t\t}\n\t\t\tcurrentNSMap[nsPrefix] = localNSMap[nsPrefix] = value;\n\t\t\ta.uri = NAMESPACE.XMLNS\n\t\t\tdomBuilder.startPrefixMapping(nsPrefix, value)\n\t\t}\n\t}\n\tvar i = el.length;\n\twhile(i--){\n\t\ta = el[i];\n\t\tvar prefix = a.prefix;\n\t\tif(prefix){//no prefix attribute has no namespace\n\t\t\tif(prefix === 'xml'){\n\t\t\t\ta.uri = NAMESPACE.XML;\n\t\t\t}if(prefix !== 'xmlns'){\n\t\t\t\ta.uri = currentNSMap[prefix || '']\n\n\t\t\t\t//{console.log('###'+a.qName,domBuilder.locator.systemId+'',currentNSMap,a.uri)}\n\t\t\t}\n\t\t}\n\t}\n\tvar nsp = tagName.indexOf(':');\n\tif(nsp>0){\n\t\tprefix = el.prefix = tagName.slice(0,nsp);\n\t\tlocalName = el.localName = tagName.slice(nsp+1);\n\t}else{\n\t\tprefix = null;//important!!\n\t\tlocalName = el.localName = tagName;\n\t}\n\t//no prefix element has default namespace\n\tvar ns = el.uri = currentNSMap[prefix || ''];\n\tdomBuilder.startElement(ns,localName,tagName,el);\n\t//endPrefixMapping and startPrefixMapping have not any help for dom builder\n\t//localNSMap = null\n\tif(el.closed){\n\t\tdomBuilder.endElement(ns,localName,tagName);\n\t\tif(localNSMap){\n\t\t\tfor (prefix in localNSMap) {\n\t\t\t\tif (Object.prototype.hasOwnProperty.call(localNSMap, prefix)) {\n\t\t\t\t\tdomBuilder.endPrefixMapping(prefix);\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\t}else{\n\t\tel.currentNSMap = currentNSMap;\n\t\tel.localNSMap = localNSMap;\n\t\t//parseStack.push(el);\n\t\treturn true;\n\t}\n}\nfunction parseHtmlSpecialContent(source,elStartEnd,tagName,entityReplacer,domBuilder){\n\tif(/^(?:script|textarea)$/i.test(tagName)){\n\t\tvar elEndStart =  source.indexOf('</'+tagName+'>',elStartEnd);\n\t\tvar text = source.substring(elStartEnd+1,elEndStart);\n\t\tif(/[&<]/.test(text)){\n\t\t\tif(/^script$/i.test(tagName)){\n\t\t\t\t//if(!/\\]\\]>/.test(text)){\n\t\t\t\t\t//lexHandler.startCDATA();\n\t\t\t\t\tdomBuilder.characters(text,0,text.length);\n\t\t\t\t\t//lexHandler.endCDATA();\n\t\t\t\t\treturn elEndStart;\n\t\t\t\t//}\n\t\t\t}//}else{//text area\n\t\t\t\ttext = text.replace(/&#?\\w+;/g,entityReplacer);\n\t\t\t\tdomBuilder.characters(text,0,text.length);\n\t\t\t\treturn elEndStart;\n\t\t\t//}\n\n\t\t}\n\t}\n\treturn elStartEnd+1;\n}\nfunction fixSelfClosed(source,elStartEnd,tagName,closeMap){\n\t//if(tagName in closeMap){\n\tvar pos = closeMap[tagName];\n\tif(pos == null){\n\t\t//console.log(tagName)\n\t\tpos =  source.lastIndexOf('</'+tagName+'>')\n\t\tif(pos<elStartEnd){//忘记闭合\n\t\t\tpos = source.lastIndexOf('</'+tagName)\n\t\t}\n\t\tcloseMap[tagName] =pos\n\t}\n\treturn pos<elStartEnd;\n\t//}\n}\n\nfunction _copy (source, target) {\n\tfor (var n in source) {\n\t\tif (Object.prototype.hasOwnProperty.call(source, n)) {\n\t\t\ttarget[n] = source[n];\n\t\t}\n\t}\n}\n\nfunction parseDCC(source,start,domBuilder,errorHandler){//sure start with '<!'\n\tvar next= source.charAt(start+2)\n\tswitch(next){\n\tcase '-':\n\t\tif(source.charAt(start + 3) === '-'){\n\t\t\tvar end = source.indexOf('-->',start+4);\n\t\t\t//append comment source.substring(4,end)//<!--\n\t\t\tif(end>start){\n\t\t\t\tdomBuilder.comment(source,start+4,end-start-4);\n\t\t\t\treturn end+3;\n\t\t\t}else{\n\t\t\t\terrorHandler.error(\"Unclosed comment\");\n\t\t\t\treturn -1;\n\t\t\t}\n\t\t}else{\n\t\t\t//error\n\t\t\treturn -1;\n\t\t}\n\tdefault:\n\t\tif(source.substr(start+3,6) == 'CDATA['){\n\t\t\tvar end = source.indexOf(']]>',start+9);\n\t\t\tdomBuilder.startCDATA();\n\t\t\tdomBuilder.characters(source,start+9,end-start-9);\n\t\t\tdomBuilder.endCDATA()\n\t\t\treturn end+3;\n\t\t}\n\t\t//<!DOCTYPE\n\t\t//startDTD(java.lang.String name, java.lang.String publicId, java.lang.String systemId)\n\t\tvar matchs = split(source,start);\n\t\tvar len = matchs.length;\n\t\tif(len>1 && /!doctype/i.test(matchs[0][0])){\n\t\t\tvar name = matchs[1][0];\n\t\t\tvar pubid = false;\n\t\t\tvar sysid = false;\n\t\t\tif(len>3){\n\t\t\t\tif(/^public$/i.test(matchs[2][0])){\n\t\t\t\t\tpubid = matchs[3][0];\n\t\t\t\t\tsysid = len>4 && matchs[4][0];\n\t\t\t\t}else if(/^system$/i.test(matchs[2][0])){\n\t\t\t\t\tsysid = matchs[3][0];\n\t\t\t\t}\n\t\t\t}\n\t\t\tvar lastMatch = matchs[len-1]\n\t\t\tdomBuilder.startDTD(name, pubid, sysid);\n\t\t\tdomBuilder.endDTD();\n\n\t\t\treturn lastMatch.index+lastMatch[0].length\n\t\t}\n\t}\n\treturn -1;\n}\n\n\n\nfunction parseInstruction(source,start,domBuilder){\n\tvar end = source.indexOf('?>',start);\n\tif(end){\n\t\tvar match = source.substring(start,end).match(/^<\\?(\\S*)\\s*([\\s\\S]*?)\\s*$/);\n\t\tif(match){\n\t\t\tvar len = match[0].length;\n\t\t\tdomBuilder.processingInstruction(match[1], match[2]) ;\n\t\t\treturn end+2;\n\t\t}else{//error\n\t\t\treturn -1;\n\t\t}\n\t}\n\treturn -1;\n}\n\nfunction ElementAttributes(){\n\tthis.attributeNames = {}\n}\nElementAttributes.prototype = {\n\tsetTagName:function(tagName){\n\t\tif(!tagNamePattern.test(tagName)){\n\t\t\tthrow new Error('invalid tagName:'+tagName)\n\t\t}\n\t\tthis.tagName = tagName\n\t},\n\taddValue:function(qName, value, offset) {\n\t\tif(!tagNamePattern.test(qName)){\n\t\t\tthrow new Error('invalid attribute:'+qName)\n\t\t}\n\t\tthis.attributeNames[qName] = this.length;\n\t\tthis[this.length++] = {qName:qName,value:value,offset:offset}\n\t},\n\tlength:0,\n\tgetLocalName:function(i){return this[i].localName},\n\tgetLocator:function(i){return this[i].locator},\n\tgetQName:function(i){return this[i].qName},\n\tgetURI:function(i){return this[i].uri},\n\tgetValue:function(i){return this[i].value}\n//\t,getIndex:function(uri, localName)){\n//\t\tif(localName){\n//\n//\t\t}else{\n//\t\t\tvar qName = uri\n//\t\t}\n//\t},\n//\tgetValue:function(){return this.getValue(this.getIndex.apply(this,arguments))},\n//\tgetType:function(uri,localName){}\n//\tgetType:function(i){},\n}\n\n\n\nfunction split(source,start){\n\tvar match;\n\tvar buf = [];\n\tvar reg = /'[^']+'|\"[^\"]+\"|[^\\s<>\\/=]+=?|(\\/?\\s*>|<)/g;\n\treg.lastIndex = start;\n\treg.exec(source);//skip <\n\twhile(match = reg.exec(source)){\n\t\tbuf.push(match);\n\t\tif(match[1])return buf;\n\t}\n}\n\nexports.XMLReader = XMLReader;\nexports.ParseError = ParseError;\n","import mod from \"-!../../node_modules/mini-css-extract-plugin/dist/loader.js??ref--8-oneOf-1-0!../../node_modules/css-loader/dist/cjs.js??ref--8-oneOf-1-1!../../node_modules/vue-loader/lib/loaders/stylePostLoader.js!../../node_modules/postcss-loader/src/index.js??ref--8-oneOf-1-2!../../node_modules/sass-loader/dist/cjs.js??ref--8-oneOf-1-3!../../node_modules/cache-loader/dist/cjs.js??ref--0-0!../../node_modules/vue-loader/lib/index.js??vue-loader-options!./readBook.vue?vue&type=style&index=0&id=87140528&scoped=true&lang=scss&\"; export default mod; export * from \"-!../../node_modules/mini-css-extract-plugin/dist/loader.js??ref--8-oneOf-1-0!../../node_modules/css-loader/dist/cjs.js??ref--8-oneOf-1-1!../../node_modules/vue-loader/lib/loaders/stylePostLoader.js!../../node_modules/postcss-loader/src/index.js??ref--8-oneOf-1-2!../../node_modules/sass-loader/dist/cjs.js??ref--8-oneOf-1-3!../../node_modules/cache-loader/dist/cjs.js??ref--0-0!../../node_modules/vue-loader/lib/index.js??vue-loader-options!./readBook.vue?vue&type=style&index=0&id=87140528&scoped=true&lang=scss&\"","var conventions = require(\"./conventions\");\n\nvar find = conventions.find;\nvar NAMESPACE = conventions.NAMESPACE;\n\n/**\n * A prerequisite for `[].filter`, to drop elements that are empty\n * @param {string} input\n * @returns {boolean}\n */\nfunction notEmptyString (input) {\n\treturn input !== ''\n}\n/**\n * @see https://infra.spec.whatwg.org/#split-on-ascii-whitespace\n * @see https://infra.spec.whatwg.org/#ascii-whitespace\n *\n * @param {string} input\n * @returns {string[]} (can be empty)\n */\nfunction splitOnASCIIWhitespace(input) {\n\t// U+0009 TAB, U+000A LF, U+000C FF, U+000D CR, U+0020 SPACE\n\treturn input ? input.split(/[\\t\\n\\f\\r ]+/).filter(notEmptyString) : []\n}\n\n/**\n * Adds element as a key to current if it is not already present.\n *\n * @param {Record<string, boolean | undefined>} current\n * @param {string} element\n * @returns {Record<string, boolean | undefined>}\n */\nfunction orderedSetReducer (current, element) {\n\tif (!current.hasOwnProperty(element)) {\n\t\tcurrent[element] = true;\n\t}\n\treturn current;\n}\n\n/**\n * @see https://infra.spec.whatwg.org/#ordered-set\n * @param {string} input\n * @returns {string[]}\n */\nfunction toOrderedSet(input) {\n\tif (!input) return [];\n\tvar list = splitOnASCIIWhitespace(input);\n\treturn Object.keys(list.reduce(orderedSetReducer, {}))\n}\n\n/**\n * Uses `list.indexOf` to implement something like `Array.prototype.includes`,\n * which we can not rely on being available.\n *\n * @param {any[]} list\n * @returns {function(any): boolean}\n */\nfunction arrayIncludes (list) {\n\treturn function(element) {\n\t\treturn list && list.indexOf(element) !== -1;\n\t}\n}\n\nfunction copy(src,dest){\n\tfor(var p in src){\n\t\tif (Object.prototype.hasOwnProperty.call(src, p)) {\n\t\t\tdest[p] = src[p];\n\t\t}\n\t}\n}\n\n/**\n^\\w+\\.prototype\\.([_\\w]+)\\s*=\\s*((?:.*\\{\\s*?[\\r\\n][\\s\\S]*?^})|\\S.*?(?=[;\\r\\n]));?\n^\\w+\\.prototype\\.([_\\w]+)\\s*=\\s*(\\S.*?(?=[;\\r\\n]));?\n */\nfunction _extends(Class,Super){\n\tvar pt = Class.prototype;\n\tif(!(pt instanceof Super)){\n\t\tfunction t(){};\n\t\tt.prototype = Super.prototype;\n\t\tt = new t();\n\t\tcopy(pt,t);\n\t\tClass.prototype = pt = t;\n\t}\n\tif(pt.constructor != Class){\n\t\tif(typeof Class != 'function'){\n\t\t\tconsole.error(\"unknown Class:\"+Class)\n\t\t}\n\t\tpt.constructor = Class\n\t}\n}\n\n// Node Types\nvar NodeType = {}\nvar ELEMENT_NODE                = NodeType.ELEMENT_NODE                = 1;\nvar ATTRIBUTE_NODE              = NodeType.ATTRIBUTE_NODE              = 2;\nvar TEXT_NODE                   = NodeType.TEXT_NODE                   = 3;\nvar CDATA_SECTION_NODE          = NodeType.CDATA_SECTION_NODE          = 4;\nvar ENTITY_REFERENCE_NODE       = NodeType.ENTITY_REFERENCE_NODE       = 5;\nvar ENTITY_NODE                 = NodeType.ENTITY_NODE                 = 6;\nvar PROCESSING_INSTRUCTION_NODE = NodeType.PROCESSING_INSTRUCTION_NODE = 7;\nvar COMMENT_NODE                = NodeType.COMMENT_NODE                = 8;\nvar DOCUMENT_NODE               = NodeType.DOCUMENT_NODE               = 9;\nvar DOCUMENT_TYPE_NODE          = NodeType.DOCUMENT_TYPE_NODE          = 10;\nvar DOCUMENT_FRAGMENT_NODE      = NodeType.DOCUMENT_FRAGMENT_NODE      = 11;\nvar NOTATION_NODE               = NodeType.NOTATION_NODE               = 12;\n\n// ExceptionCode\nvar ExceptionCode = {}\nvar ExceptionMessage = {};\nvar INDEX_SIZE_ERR              = ExceptionCode.INDEX_SIZE_ERR              = ((ExceptionMessage[1]=\"Index size error\"),1);\nvar DOMSTRING_SIZE_ERR          = ExceptionCode.DOMSTRING_SIZE_ERR          = ((ExceptionMessage[2]=\"DOMString size error\"),2);\nvar HIERARCHY_REQUEST_ERR       = ExceptionCode.HIERARCHY_REQUEST_ERR       = ((ExceptionMessage[3]=\"Hierarchy request error\"),3);\nvar WRONG_DOCUMENT_ERR          = ExceptionCode.WRONG_DOCUMENT_ERR          = ((ExceptionMessage[4]=\"Wrong document\"),4);\nvar INVALID_CHARACTER_ERR       = ExceptionCode.INVALID_CHARACTER_ERR       = ((ExceptionMessage[5]=\"Invalid character\"),5);\nvar NO_DATA_ALLOWED_ERR         = ExceptionCode.NO_DATA_ALLOWED_ERR         = ((ExceptionMessage[6]=\"No data allowed\"),6);\nvar NO_MODIFICATION_ALLOWED_ERR = ExceptionCode.NO_MODIFICATION_ALLOWED_ERR = ((ExceptionMessage[7]=\"No modification allowed\"),7);\nvar NOT_FOUND_ERR               = ExceptionCode.NOT_FOUND_ERR               = ((ExceptionMessage[8]=\"Not found\"),8);\nvar NOT_SUPPORTED_ERR           = ExceptionCode.NOT_SUPPORTED_ERR           = ((ExceptionMessage[9]=\"Not supported\"),9);\nvar INUSE_ATTRIBUTE_ERR         = ExceptionCode.INUSE_ATTRIBUTE_ERR         = ((ExceptionMessage[10]=\"Attribute in use\"),10);\n//level2\nvar INVALID_STATE_ERR        \t= ExceptionCode.INVALID_STATE_ERR        \t= ((ExceptionMessage[11]=\"Invalid state\"),11);\nvar SYNTAX_ERR               \t= ExceptionCode.SYNTAX_ERR               \t= ((ExceptionMessage[12]=\"Syntax error\"),12);\nvar INVALID_MODIFICATION_ERR \t= ExceptionCode.INVALID_MODIFICATION_ERR \t= ((ExceptionMessage[13]=\"Invalid modification\"),13);\nvar NAMESPACE_ERR            \t= ExceptionCode.NAMESPACE_ERR           \t= ((ExceptionMessage[14]=\"Invalid namespace\"),14);\nvar INVALID_ACCESS_ERR       \t= ExceptionCode.INVALID_ACCESS_ERR      \t= ((ExceptionMessage[15]=\"Invalid access\"),15);\n\n/**\n * DOM Level 2\n * Object DOMException\n * @see http://www.w3.org/TR/2000/REC-DOM-Level-2-Core-20001113/ecma-script-binding.html\n * @see http://www.w3.org/TR/REC-DOM-Level-1/ecma-script-language-binding.html\n */\nfunction DOMException(code, message) {\n\tif(message instanceof Error){\n\t\tvar error = message;\n\t}else{\n\t\terror = this;\n\t\tError.call(this, ExceptionMessage[code]);\n\t\tthis.message = ExceptionMessage[code];\n\t\tif(Error.captureStackTrace) Error.captureStackTrace(this, DOMException);\n\t}\n\terror.code = code;\n\tif(message) this.message = this.message + \": \" + message;\n\treturn error;\n};\nDOMException.prototype = Error.prototype;\ncopy(ExceptionCode,DOMException)\n\n/**\n * @see http://www.w3.org/TR/2000/REC-DOM-Level-2-Core-20001113/core.html#ID-536297177\n * The NodeList interface provides the abstraction of an ordered collection of nodes, without defining or constraining how this collection is implemented. NodeList objects in the DOM are live.\n * The items in the NodeList are accessible via an integral index, starting from 0.\n */\nfunction NodeList() {\n};\nNodeList.prototype = {\n\t/**\n\t * The number of nodes in the list. The range of valid child node indices is 0 to length-1 inclusive.\n\t * @standard level1\n\t */\n\tlength:0,\n\t/**\n\t * Returns the indexth item in the collection. If index is greater than or equal to the number of nodes in the list, this returns null.\n\t * @standard level1\n\t * @param index  unsigned long\n\t *   Index into the collection.\n\t * @return Node\n\t * \tThe node at the indexth position in the NodeList, or null if that is not a valid index.\n\t */\n\titem: function(index) {\n\t\treturn index >= 0 && index < this.length ? this[index] : null;\n\t},\n\ttoString:function(isHTML,nodeFilter){\n\t\tfor(var buf = [], i = 0;i<this.length;i++){\n\t\t\tserializeToString(this[i],buf,isHTML,nodeFilter);\n\t\t}\n\t\treturn buf.join('');\n\t},\n\t/**\n\t * @private\n\t * @param {function (Node):boolean} predicate\n\t * @returns {Node[]}\n\t */\n\tfilter: function (predicate) {\n\t\treturn Array.prototype.filter.call(this, predicate);\n\t},\n\t/**\n\t * @private\n\t * @param {Node} item\n\t * @returns {number}\n\t */\n\tindexOf: function (item) {\n\t\treturn Array.prototype.indexOf.call(this, item);\n\t},\n};\n\nfunction LiveNodeList(node,refresh){\n\tthis._node = node;\n\tthis._refresh = refresh\n\t_updateLiveList(this);\n}\nfunction _updateLiveList(list){\n\tvar inc = list._node._inc || list._node.ownerDocument._inc;\n\tif (list._inc !== inc) {\n\t\tvar ls = list._refresh(list._node);\n\t\t__set__(list,'length',ls.length);\n\t\tif (!list.$$length || ls.length < list.$$length) {\n\t\t\tfor (var i = ls.length; i in list; i++) {\n\t\t\t\tif (Object.prototype.hasOwnProperty.call(list, i)) {\n\t\t\t\t\tdelete list[i];\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\t\tcopy(ls,list);\n\t\tlist._inc = inc;\n\t}\n}\nLiveNodeList.prototype.item = function(i){\n\t_updateLiveList(this);\n\treturn this[i] || null;\n}\n\n_extends(LiveNodeList,NodeList);\n\n/**\n * Objects implementing the NamedNodeMap interface are used\n * to represent collections of nodes that can be accessed by name.\n * Note that NamedNodeMap does not inherit from NodeList;\n * NamedNodeMaps are not maintained in any particular order.\n * Objects contained in an object implementing NamedNodeMap may also be accessed by an ordinal index,\n * but this is simply to allow convenient enumeration of the contents of a NamedNodeMap,\n * and does not imply that the DOM specifies an order to these Nodes.\n * NamedNodeMap objects in the DOM are live.\n * used for attributes or DocumentType entities\n */\nfunction NamedNodeMap() {\n};\n\nfunction _findNodeIndex(list,node){\n\tvar i = list.length;\n\twhile(i--){\n\t\tif(list[i] === node){return i}\n\t}\n}\n\nfunction _addNamedNode(el,list,newAttr,oldAttr){\n\tif(oldAttr){\n\t\tlist[_findNodeIndex(list,oldAttr)] = newAttr;\n\t}else{\n\t\tlist[list.length++] = newAttr;\n\t}\n\tif(el){\n\t\tnewAttr.ownerElement = el;\n\t\tvar doc = el.ownerDocument;\n\t\tif(doc){\n\t\t\toldAttr && _onRemoveAttribute(doc,el,oldAttr);\n\t\t\t_onAddAttribute(doc,el,newAttr);\n\t\t}\n\t}\n}\nfunction _removeNamedNode(el,list,attr){\n\t//console.log('remove attr:'+attr)\n\tvar i = _findNodeIndex(list,attr);\n\tif(i>=0){\n\t\tvar lastIndex = list.length-1\n\t\twhile(i<lastIndex){\n\t\t\tlist[i] = list[++i]\n\t\t}\n\t\tlist.length = lastIndex;\n\t\tif(el){\n\t\t\tvar doc = el.ownerDocument;\n\t\t\tif(doc){\n\t\t\t\t_onRemoveAttribute(doc,el,attr);\n\t\t\t\tattr.ownerElement = null;\n\t\t\t}\n\t\t}\n\t}else{\n\t\tthrow new DOMException(NOT_FOUND_ERR,new Error(el.tagName+'@'+attr))\n\t}\n}\nNamedNodeMap.prototype = {\n\tlength:0,\n\titem:NodeList.prototype.item,\n\tgetNamedItem: function(key) {\n//\t\tif(key.indexOf(':')>0 || key == 'xmlns'){\n//\t\t\treturn null;\n//\t\t}\n\t\t//console.log()\n\t\tvar i = this.length;\n\t\twhile(i--){\n\t\t\tvar attr = this[i];\n\t\t\t//console.log(attr.nodeName,key)\n\t\t\tif(attr.nodeName == key){\n\t\t\t\treturn attr;\n\t\t\t}\n\t\t}\n\t},\n\tsetNamedItem: function(attr) {\n\t\tvar el = attr.ownerElement;\n\t\tif(el && el!=this._ownerElement){\n\t\t\tthrow new DOMException(INUSE_ATTRIBUTE_ERR);\n\t\t}\n\t\tvar oldAttr = this.getNamedItem(attr.nodeName);\n\t\t_addNamedNode(this._ownerElement,this,attr,oldAttr);\n\t\treturn oldAttr;\n\t},\n\t/* returns Node */\n\tsetNamedItemNS: function(attr) {// raises: WRONG_DOCUMENT_ERR,NO_MODIFICATION_ALLOWED_ERR,INUSE_ATTRIBUTE_ERR\n\t\tvar el = attr.ownerElement, oldAttr;\n\t\tif(el && el!=this._ownerElement){\n\t\t\tthrow new DOMException(INUSE_ATTRIBUTE_ERR);\n\t\t}\n\t\toldAttr = this.getNamedItemNS(attr.namespaceURI,attr.localName);\n\t\t_addNamedNode(this._ownerElement,this,attr,oldAttr);\n\t\treturn oldAttr;\n\t},\n\n\t/* returns Node */\n\tremoveNamedItem: function(key) {\n\t\tvar attr = this.getNamedItem(key);\n\t\t_removeNamedNode(this._ownerElement,this,attr);\n\t\treturn attr;\n\n\n\t},// raises: NOT_FOUND_ERR,NO_MODIFICATION_ALLOWED_ERR\n\n\t//for level2\n\tremoveNamedItemNS:function(namespaceURI,localName){\n\t\tvar attr = this.getNamedItemNS(namespaceURI,localName);\n\t\t_removeNamedNode(this._ownerElement,this,attr);\n\t\treturn attr;\n\t},\n\tgetNamedItemNS: function(namespaceURI, localName) {\n\t\tvar i = this.length;\n\t\twhile(i--){\n\t\t\tvar node = this[i];\n\t\t\tif(node.localName == localName && node.namespaceURI == namespaceURI){\n\t\t\t\treturn node;\n\t\t\t}\n\t\t}\n\t\treturn null;\n\t}\n};\n\n/**\n * The DOMImplementation interface represents an object providing methods\n * which are not dependent on any particular document.\n * Such an object is returned by the `Document.implementation` property.\n *\n * __The individual methods describe the differences compared to the specs.__\n *\n * @constructor\n *\n * @see https://developer.mozilla.org/en-US/docs/Web/API/DOMImplementation MDN\n * @see https://www.w3.org/TR/REC-DOM-Level-1/level-one-core.html#ID-102161490 DOM Level 1 Core (Initial)\n * @see https://www.w3.org/TR/DOM-Level-2-Core/core.html#ID-102161490 DOM Level 2 Core\n * @see https://www.w3.org/TR/DOM-Level-3-Core/core.html#ID-102161490 DOM Level 3 Core\n * @see https://dom.spec.whatwg.org/#domimplementation DOM Living Standard\n */\nfunction DOMImplementation() {\n}\n\nDOMImplementation.prototype = {\n\t/**\n\t * The DOMImplementation.hasFeature() method returns a Boolean flag indicating if a given feature is supported.\n\t * The different implementations fairly diverged in what kind of features were reported.\n\t * The latest version of the spec settled to force this method to always return true, where the functionality was accurate and in use.\n\t *\n\t * @deprecated It is deprecated and modern browsers return true in all cases.\n\t *\n\t * @param {string} feature\n\t * @param {string} [version]\n\t * @returns {boolean} always true\n\t *\n\t * @see https://developer.mozilla.org/en-US/docs/Web/API/DOMImplementation/hasFeature MDN\n\t * @see https://www.w3.org/TR/REC-DOM-Level-1/level-one-core.html#ID-5CED94D7 DOM Level 1 Core\n\t * @see https://dom.spec.whatwg.org/#dom-domimplementation-hasfeature DOM Living Standard\n\t */\n\thasFeature: function(feature, version) {\n\t\t\treturn true;\n\t},\n\t/**\n\t * Creates an XML Document object of the specified type with its document element.\n\t *\n\t * __It behaves slightly different from the description in the living standard__:\n\t * - There is no interface/class `XMLDocument`, it returns a `Document` instance.\n\t * - `contentType`, `encoding`, `mode`, `origin`, `url` fields are currently not declared.\n\t * - this implementation is not validating names or qualified names\n\t *   (when parsing XML strings, the SAX parser takes care of that)\n\t *\n\t * @param {string|null} namespaceURI\n\t * @param {string} qualifiedName\n\t * @param {DocumentType=null} doctype\n\t * @returns {Document}\n\t *\n\t * @see https://developer.mozilla.org/en-US/docs/Web/API/DOMImplementation/createDocument MDN\n\t * @see https://www.w3.org/TR/DOM-Level-2-Core/core.html#Level-2-Core-DOM-createDocument DOM Level 2 Core (initial)\n\t * @see https://dom.spec.whatwg.org/#dom-domimplementation-createdocument  DOM Level 2 Core\n\t *\n\t * @see https://dom.spec.whatwg.org/#validate-and-extract DOM: Validate and extract\n\t * @see https://www.w3.org/TR/xml/#NT-NameStartChar XML Spec: Names\n\t * @see https://www.w3.org/TR/xml-names/#ns-qualnames XML Namespaces: Qualified names\n\t */\n\tcreateDocument: function(namespaceURI,  qualifiedName, doctype){\n\t\tvar doc = new Document();\n\t\tdoc.implementation = this;\n\t\tdoc.childNodes = new NodeList();\n\t\tdoc.doctype = doctype || null;\n\t\tif (doctype){\n\t\t\tdoc.appendChild(doctype);\n\t\t}\n\t\tif (qualifiedName){\n\t\t\tvar root = doc.createElementNS(namespaceURI, qualifiedName);\n\t\t\tdoc.appendChild(root);\n\t\t}\n\t\treturn doc;\n\t},\n\t/**\n\t * Returns a doctype, with the given `qualifiedName`, `publicId`, and `systemId`.\n\t *\n\t * __This behavior is slightly different from the in the specs__:\n\t * - this implementation is not validating names or qualified names\n\t *   (when parsing XML strings, the SAX parser takes care of that)\n\t *\n\t * @param {string} qualifiedName\n\t * @param {string} [publicId]\n\t * @param {string} [systemId]\n\t * @returns {DocumentType} which can either be used with `DOMImplementation.createDocument` upon document creation\n\t * \t\t\t\t  or can be put into the document via methods like `Node.insertBefore()` or `Node.replaceChild()`\n\t *\n\t * @see https://developer.mozilla.org/en-US/docs/Web/API/DOMImplementation/createDocumentType MDN\n\t * @see https://www.w3.org/TR/DOM-Level-2-Core/core.html#Level-2-Core-DOM-createDocType DOM Level 2 Core\n\t * @see https://dom.spec.whatwg.org/#dom-domimplementation-createdocumenttype DOM Living Standard\n\t *\n\t * @see https://dom.spec.whatwg.org/#validate-and-extract DOM: Validate and extract\n\t * @see https://www.w3.org/TR/xml/#NT-NameStartChar XML Spec: Names\n\t * @see https://www.w3.org/TR/xml-names/#ns-qualnames XML Namespaces: Qualified names\n\t */\n\tcreateDocumentType: function(qualifiedName, publicId, systemId){\n\t\tvar node = new DocumentType();\n\t\tnode.name = qualifiedName;\n\t\tnode.nodeName = qualifiedName;\n\t\tnode.publicId = publicId || '';\n\t\tnode.systemId = systemId || '';\n\n\t\treturn node;\n\t}\n};\n\n\n/**\n * @see http://www.w3.org/TR/2000/REC-DOM-Level-2-Core-20001113/core.html#ID-1950641247\n */\n\nfunction Node() {\n};\n\nNode.prototype = {\n\tfirstChild : null,\n\tlastChild : null,\n\tpreviousSibling : null,\n\tnextSibling : null,\n\tattributes : null,\n\tparentNode : null,\n\tchildNodes : null,\n\townerDocument : null,\n\tnodeValue : null,\n\tnamespaceURI : null,\n\tprefix : null,\n\tlocalName : null,\n\t// Modified in DOM Level 2:\n\tinsertBefore:function(newChild, refChild){//raises\n\t\treturn _insertBefore(this,newChild,refChild);\n\t},\n\treplaceChild:function(newChild, oldChild){//raises\n\t\t_insertBefore(this, newChild,oldChild, assertPreReplacementValidityInDocument);\n\t\tif(oldChild){\n\t\t\tthis.removeChild(oldChild);\n\t\t}\n\t},\n\tremoveChild:function(oldChild){\n\t\treturn _removeChild(this,oldChild);\n\t},\n\tappendChild:function(newChild){\n\t\treturn this.insertBefore(newChild,null);\n\t},\n\thasChildNodes:function(){\n\t\treturn this.firstChild != null;\n\t},\n\tcloneNode:function(deep){\n\t\treturn cloneNode(this.ownerDocument||this,this,deep);\n\t},\n\t// Modified in DOM Level 2:\n\tnormalize:function(){\n\t\tvar child = this.firstChild;\n\t\twhile(child){\n\t\t\tvar next = child.nextSibling;\n\t\t\tif(next && next.nodeType == TEXT_NODE && child.nodeType == TEXT_NODE){\n\t\t\t\tthis.removeChild(next);\n\t\t\t\tchild.appendData(next.data);\n\t\t\t}else{\n\t\t\t\tchild.normalize();\n\t\t\t\tchild = next;\n\t\t\t}\n\t\t}\n\t},\n  \t// Introduced in DOM Level 2:\n\tisSupported:function(feature, version){\n\t\treturn this.ownerDocument.implementation.hasFeature(feature,version);\n\t},\n    // Introduced in DOM Level 2:\n    hasAttributes:function(){\n    \treturn this.attributes.length>0;\n    },\n\t/**\n\t * Look up the prefix associated to the given namespace URI, starting from this node.\n\t * **The default namespace declarations are ignored by this method.**\n\t * See Namespace Prefix Lookup for details on the algorithm used by this method.\n\t *\n\t * _Note: The implementation seems to be incomplete when compared to the algorithm described in the specs._\n\t *\n\t * @param {string | null} namespaceURI\n\t * @returns {string | null}\n\t * @see https://www.w3.org/TR/DOM-Level-3-Core/core.html#Node3-lookupNamespacePrefix\n\t * @see https://www.w3.org/TR/DOM-Level-3-Core/namespaces-algorithms.html#lookupNamespacePrefixAlgo\n\t * @see https://dom.spec.whatwg.org/#dom-node-lookupprefix\n\t * @see https://github.com/xmldom/xmldom/issues/322\n\t */\n    lookupPrefix:function(namespaceURI){\n    \tvar el = this;\n    \twhile(el){\n    \t\tvar map = el._nsMap;\n    \t\t//console.dir(map)\n    \t\tif(map){\n    \t\t\tfor(var n in map){\n\t\t\t\t\tif (Object.prototype.hasOwnProperty.call(map, n) && map[n] === namespaceURI) {\n\t\t\t\t\t\treturn n;\n\t\t\t\t\t}\n    \t\t\t}\n    \t\t}\n    \t\tel = el.nodeType == ATTRIBUTE_NODE?el.ownerDocument : el.parentNode;\n    \t}\n    \treturn null;\n    },\n    // Introduced in DOM Level 3:\n    lookupNamespaceURI:function(prefix){\n    \tvar el = this;\n    \twhile(el){\n    \t\tvar map = el._nsMap;\n    \t\t//console.dir(map)\n    \t\tif(map){\n    \t\t\tif(prefix in map){\n\t\t\t\t\tif(Object.prototype.hasOwnProperty.call(map, prefix)){\n\t\t\t\t\t\treturn map[prefix] ;\n\t\t\t\t\t}\n    \t\t\t}\n    \t\t}\n    \t\tel = el.nodeType == ATTRIBUTE_NODE?el.ownerDocument : el.parentNode;\n    \t}\n    \treturn null;\n    },\n    // Introduced in DOM Level 3:\n    isDefaultNamespace:function(namespaceURI){\n    \tvar prefix = this.lookupPrefix(namespaceURI);\n    \treturn prefix == null;\n    }\n};\n\n\nfunction _xmlEncoder(c){\n\treturn c == '<' && '&lt;' ||\n         c == '>' && '&gt;' ||\n         c == '&' && '&amp;' ||\n         c == '\"' && '&quot;' ||\n         '&#'+c.charCodeAt()+';'\n}\n\n\ncopy(NodeType,Node);\ncopy(NodeType,Node.prototype);\n\n/**\n * @param callback return true for continue,false for break\n * @return boolean true: break visit;\n */\nfunction _visitNode(node,callback){\n\tif(callback(node)){\n\t\treturn true;\n\t}\n\tif(node = node.firstChild){\n\t\tdo{\n\t\t\tif(_visitNode(node,callback)){return true}\n        }while(node=node.nextSibling)\n    }\n}\n\n\n\nfunction Document(){\n\tthis.ownerDocument = this;\n}\n\nfunction _onAddAttribute(doc,el,newAttr){\n\tdoc && doc._inc++;\n\tvar ns = newAttr.namespaceURI ;\n\tif(ns === NAMESPACE.XMLNS){\n\t\t//update namespace\n\t\tel._nsMap[newAttr.prefix?newAttr.localName:''] = newAttr.value\n\t}\n}\n\nfunction _onRemoveAttribute(doc,el,newAttr,remove){\n\tdoc && doc._inc++;\n\tvar ns = newAttr.namespaceURI ;\n\tif(ns === NAMESPACE.XMLNS){\n\t\t//update namespace\n\t\tdelete el._nsMap[newAttr.prefix?newAttr.localName:'']\n\t}\n}\n\nfunction _onUpdateChild(doc,el,newChild){\n\tif(doc && doc._inc){\n\t\tdoc._inc++;\n\t\t//update childNodes\n\t\tvar cs = el.childNodes;\n\t\tif(newChild){\n\t\t\tcs[cs.length++] = newChild;\n\t\t}else{\n\t\t\t//console.log(1)\n\t\t\tvar child = el.firstChild;\n\t\t\tvar i = 0;\n\t\t\twhile(child){\n\t\t\t\tcs[i++] = child;\n\t\t\t\tchild =child.nextSibling;\n\t\t\t}\n\t\t\tcs.length = i;\n\t\t\tdelete cs[cs.length];\n\t\t}\n\t}\n}\n\n/**\n * attributes;\n * children;\n *\n * writeable properties:\n * nodeValue,Attr:value,CharacterData:data\n * prefix\n */\nfunction _removeChild(parentNode,child){\n\tvar previous = child.previousSibling;\n\tvar next = child.nextSibling;\n\tif(previous){\n\t\tprevious.nextSibling = next;\n\t}else{\n\t\tparentNode.firstChild = next\n\t}\n\tif(next){\n\t\tnext.previousSibling = previous;\n\t}else{\n\t\tparentNode.lastChild = previous;\n\t}\n\tchild.parentNode = null;\n\tchild.previousSibling = null;\n\tchild.nextSibling = null;\n\t_onUpdateChild(parentNode.ownerDocument,parentNode);\n\treturn child;\n}\n\n/**\n * Returns `true` if `node` can be a parent for insertion.\n * @param {Node} node\n * @returns {boolean}\n */\nfunction hasValidParentNodeType(node) {\n\treturn (\n\t\tnode &&\n\t\t(node.nodeType === Node.DOCUMENT_NODE || node.nodeType === Node.DOCUMENT_FRAGMENT_NODE || node.nodeType === Node.ELEMENT_NODE)\n\t);\n}\n\n/**\n * Returns `true` if `node` can be inserted according to it's `nodeType`.\n * @param {Node} node\n * @returns {boolean}\n */\nfunction hasInsertableNodeType(node) {\n\treturn (\n\t\tnode &&\n\t\t(isElementNode(node) ||\n\t\t\tisTextNode(node) ||\n\t\t\tisDocTypeNode(node) ||\n\t\t\tnode.nodeType === Node.DOCUMENT_FRAGMENT_NODE ||\n\t\t\tnode.nodeType === Node.COMMENT_NODE ||\n\t\t\tnode.nodeType === Node.PROCESSING_INSTRUCTION_NODE)\n\t);\n}\n\n/**\n * Returns true if `node` is a DOCTYPE node\n * @param {Node} node\n * @returns {boolean}\n */\nfunction isDocTypeNode(node) {\n\treturn node && node.nodeType === Node.DOCUMENT_TYPE_NODE;\n}\n\n/**\n * Returns true if the node is an element\n * @param {Node} node\n * @returns {boolean}\n */\nfunction isElementNode(node) {\n\treturn node && node.nodeType === Node.ELEMENT_NODE;\n}\n/**\n * Returns true if `node` is a text node\n * @param {Node} node\n * @returns {boolean}\n */\nfunction isTextNode(node) {\n\treturn node && node.nodeType === Node.TEXT_NODE;\n}\n\n/**\n * Check if en element node can be inserted before `child`, or at the end if child is falsy,\n * according to the presence and position of a doctype node on the same level.\n *\n * @param {Document} doc The document node\n * @param {Node} child the node that would become the nextSibling if the element would be inserted\n * @returns {boolean} `true` if an element can be inserted before child\n * @private\n * https://dom.spec.whatwg.org/#concept-node-ensure-pre-insertion-validity\n */\nfunction isElementInsertionPossible(doc, child) {\n\tvar parentChildNodes = doc.childNodes || [];\n\tif (find(parentChildNodes, isElementNode) || isDocTypeNode(child)) {\n\t\treturn false;\n\t}\n\tvar docTypeNode = find(parentChildNodes, isDocTypeNode);\n\treturn !(child && docTypeNode && parentChildNodes.indexOf(docTypeNode) > parentChildNodes.indexOf(child));\n}\n\n/**\n * Check if en element node can be inserted before `child`, or at the end if child is falsy,\n * according to the presence and position of a doctype node on the same level.\n *\n * @param {Node} doc The document node\n * @param {Node} child the node that would become the nextSibling if the element would be inserted\n * @returns {boolean} `true` if an element can be inserted before child\n * @private\n * https://dom.spec.whatwg.org/#concept-node-ensure-pre-insertion-validity\n */\nfunction isElementReplacementPossible(doc, child) {\n\tvar parentChildNodes = doc.childNodes || [];\n\n\tfunction hasElementChildThatIsNotChild(node) {\n\t\treturn isElementNode(node) && node !== child;\n\t}\n\n\tif (find(parentChildNodes, hasElementChildThatIsNotChild)) {\n\t\treturn false;\n\t}\n\tvar docTypeNode = find(parentChildNodes, isDocTypeNode);\n\treturn !(child && docTypeNode && parentChildNodes.indexOf(docTypeNode) > parentChildNodes.indexOf(child));\n}\n\n/**\n * @private\n * Steps 1-5 of the checks before inserting and before replacing a child are the same.\n *\n * @param {Node} parent the parent node to insert `node` into\n * @param {Node} node the node to insert\n * @param {Node=} child the node that should become the `nextSibling` of `node`\n * @returns {Node}\n * @throws DOMException for several node combinations that would create a DOM that is not well-formed.\n * @throws DOMException if `child` is provided but is not a child of `parent`.\n * @see https://dom.spec.whatwg.org/#concept-node-ensure-pre-insertion-validity\n * @see https://dom.spec.whatwg.org/#concept-node-replace\n */\nfunction assertPreInsertionValidity1to5(parent, node, child) {\n\t// 1. If `parent` is not a Document, DocumentFragment, or Element node, then throw a \"HierarchyRequestError\" DOMException.\n\tif (!hasValidParentNodeType(parent)) {\n\t\tthrow new DOMException(HIERARCHY_REQUEST_ERR, 'Unexpected parent node type ' + parent.nodeType);\n\t}\n\t// 2. If `node` is a host-including inclusive ancestor of `parent`, then throw a \"HierarchyRequestError\" DOMException.\n\t// not implemented!\n\t// 3. If `child` is non-null and its parent is not `parent`, then throw a \"NotFoundError\" DOMException.\n\tif (child && child.parentNode !== parent) {\n\t\tthrow new DOMException(NOT_FOUND_ERR, 'child not in parent');\n\t}\n\tif (\n\t\t// 4. If `node` is not a DocumentFragment, DocumentType, Element, or CharacterData node, then throw a \"HierarchyRequestError\" DOMException.\n\t\t!hasInsertableNodeType(node) ||\n\t\t// 5. If either `node` is a Text node and `parent` is a document,\n\t\t// the sax parser currently adds top level text nodes, this will be fixed in 0.9.0\n\t\t// || (node.nodeType === Node.TEXT_NODE && parent.nodeType === Node.DOCUMENT_NODE)\n\t\t// or `node` is a doctype and `parent` is not a document, then throw a \"HierarchyRequestError\" DOMException.\n\t\t(isDocTypeNode(node) && parent.nodeType !== Node.DOCUMENT_NODE)\n\t) {\n\t\tthrow new DOMException(\n\t\t\tHIERARCHY_REQUEST_ERR,\n\t\t\t'Unexpected node type ' + node.nodeType + ' for parent node type ' + parent.nodeType\n\t\t);\n\t}\n}\n\n/**\n * @private\n * Step 6 of the checks before inserting and before replacing a child are different.\n *\n * @param {Document} parent the parent node to insert `node` into\n * @param {Node} node the node to insert\n * @param {Node | undefined} child the node that should become the `nextSibling` of `node`\n * @returns {Node}\n * @throws DOMException for several node combinations that would create a DOM that is not well-formed.\n * @throws DOMException if `child` is provided but is not a child of `parent`.\n * @see https://dom.spec.whatwg.org/#concept-node-ensure-pre-insertion-validity\n * @see https://dom.spec.whatwg.org/#concept-node-replace\n */\nfunction assertPreInsertionValidityInDocument(parent, node, child) {\n\tvar parentChildNodes = parent.childNodes || [];\n\tvar nodeChildNodes = node.childNodes || [];\n\n\t// DocumentFragment\n\tif (node.nodeType === Node.DOCUMENT_FRAGMENT_NODE) {\n\t\tvar nodeChildElements = nodeChildNodes.filter(isElementNode);\n\t\t// If node has more than one element child or has a Text node child.\n\t\tif (nodeChildElements.length > 1 || find(nodeChildNodes, isTextNode)) {\n\t\t\tthrow new DOMException(HIERARCHY_REQUEST_ERR, 'More than one element or text in fragment');\n\t\t}\n\t\t// Otherwise, if `node` has one element child and either `parent` has an element child,\n\t\t// `child` is a doctype, or `child` is non-null and a doctype is following `child`.\n\t\tif (nodeChildElements.length === 1 && !isElementInsertionPossible(parent, child)) {\n\t\t\tthrow new DOMException(HIERARCHY_REQUEST_ERR, 'Element in fragment can not be inserted before doctype');\n\t\t}\n\t}\n\t// Element\n\tif (isElementNode(node)) {\n\t\t// `parent` has an element child, `child` is a doctype,\n\t\t// or `child` is non-null and a doctype is following `child`.\n\t\tif (!isElementInsertionPossible(parent, child)) {\n\t\t\tthrow new DOMException(HIERARCHY_REQUEST_ERR, 'Only one element can be added and only after doctype');\n\t\t}\n\t}\n\t// DocumentType\n\tif (isDocTypeNode(node)) {\n\t\t// `parent` has a doctype child,\n\t\tif (find(parentChildNodes, isDocTypeNode)) {\n\t\t\tthrow new DOMException(HIERARCHY_REQUEST_ERR, 'Only one doctype is allowed');\n\t\t}\n\t\tvar parentElementChild = find(parentChildNodes, isElementNode);\n\t\t// `child` is non-null and an element is preceding `child`,\n\t\tif (child && parentChildNodes.indexOf(parentElementChild) < parentChildNodes.indexOf(child)) {\n\t\t\tthrow new DOMException(HIERARCHY_REQUEST_ERR, 'Doctype can only be inserted before an element');\n\t\t}\n\t\t// or `child` is null and `parent` has an element child.\n\t\tif (!child && parentElementChild) {\n\t\t\tthrow new DOMException(HIERARCHY_REQUEST_ERR, 'Doctype can not be appended since element is present');\n\t\t}\n\t}\n}\n\n/**\n * @private\n * Step 6 of the checks before inserting and before replacing a child are different.\n *\n * @param {Document} parent the parent node to insert `node` into\n * @param {Node} node the node to insert\n * @param {Node | undefined} child the node that should become the `nextSibling` of `node`\n * @returns {Node}\n * @throws DOMException for several node combinations that would create a DOM that is not well-formed.\n * @throws DOMException if `child` is provided but is not a child of `parent`.\n * @see https://dom.spec.whatwg.org/#concept-node-ensure-pre-insertion-validity\n * @see https://dom.spec.whatwg.org/#concept-node-replace\n */\nfunction assertPreReplacementValidityInDocument(parent, node, child) {\n\tvar parentChildNodes = parent.childNodes || [];\n\tvar nodeChildNodes = node.childNodes || [];\n\n\t// DocumentFragment\n\tif (node.nodeType === Node.DOCUMENT_FRAGMENT_NODE) {\n\t\tvar nodeChildElements = nodeChildNodes.filter(isElementNode);\n\t\t// If `node` has more than one element child or has a Text node child.\n\t\tif (nodeChildElements.length > 1 || find(nodeChildNodes, isTextNode)) {\n\t\t\tthrow new DOMException(HIERARCHY_REQUEST_ERR, 'More than one element or text in fragment');\n\t\t}\n\t\t// Otherwise, if `node` has one element child and either `parent` has an element child that is not `child` or a doctype is following `child`.\n\t\tif (nodeChildElements.length === 1 && !isElementReplacementPossible(parent, child)) {\n\t\t\tthrow new DOMException(HIERARCHY_REQUEST_ERR, 'Element in fragment can not be inserted before doctype');\n\t\t}\n\t}\n\t// Element\n\tif (isElementNode(node)) {\n\t\t// `parent` has an element child that is not `child` or a doctype is following `child`.\n\t\tif (!isElementReplacementPossible(parent, child)) {\n\t\t\tthrow new DOMException(HIERARCHY_REQUEST_ERR, 'Only one element can be added and only after doctype');\n\t\t}\n\t}\n\t// DocumentType\n\tif (isDocTypeNode(node)) {\n\t\tfunction hasDoctypeChildThatIsNotChild(node) {\n\t\t\treturn isDocTypeNode(node) && node !== child;\n\t\t}\n\n\t\t// `parent` has a doctype child that is not `child`,\n\t\tif (find(parentChildNodes, hasDoctypeChildThatIsNotChild)) {\n\t\t\tthrow new DOMException(HIERARCHY_REQUEST_ERR, 'Only one doctype is allowed');\n\t\t}\n\t\tvar parentElementChild = find(parentChildNodes, isElementNode);\n\t\t// or an element is preceding `child`.\n\t\tif (child && parentChildNodes.indexOf(parentElementChild) < parentChildNodes.indexOf(child)) {\n\t\t\tthrow new DOMException(HIERARCHY_REQUEST_ERR, 'Doctype can only be inserted before an element');\n\t\t}\n\t}\n}\n\n/**\n * @private\n * @param {Node} parent the parent node to insert `node` into\n * @param {Node} node the node to insert\n * @param {Node=} child the node that should become the `nextSibling` of `node`\n * @returns {Node}\n * @throws DOMException for several node combinations that would create a DOM that is not well-formed.\n * @throws DOMException if `child` is provided but is not a child of `parent`.\n * @see https://dom.spec.whatwg.org/#concept-node-ensure-pre-insertion-validity\n */\nfunction _insertBefore(parent, node, child, _inDocumentAssertion) {\n\t// To ensure pre-insertion validity of a node into a parent before a child, run these steps:\n\tassertPreInsertionValidity1to5(parent, node, child);\n\n\t// If parent is a document, and any of the statements below, switched on the interface node implements,\n\t// are true, then throw a \"HierarchyRequestError\" DOMException.\n\tif (parent.nodeType === Node.DOCUMENT_NODE) {\n\t\t(_inDocumentAssertion || assertPreInsertionValidityInDocument)(parent, node, child);\n\t}\n\n\tvar cp = node.parentNode;\n\tif(cp){\n\t\tcp.removeChild(node);//remove and update\n\t}\n\tif(node.nodeType === DOCUMENT_FRAGMENT_NODE){\n\t\tvar newFirst = node.firstChild;\n\t\tif (newFirst == null) {\n\t\t\treturn node;\n\t\t}\n\t\tvar newLast = node.lastChild;\n\t}else{\n\t\tnewFirst = newLast = node;\n\t}\n\tvar pre = child ? child.previousSibling : parent.lastChild;\n\n\tnewFirst.previousSibling = pre;\n\tnewLast.nextSibling = child;\n\n\n\tif(pre){\n\t\tpre.nextSibling = newFirst;\n\t}else{\n\t\tparent.firstChild = newFirst;\n\t}\n\tif(child == null){\n\t\tparent.lastChild = newLast;\n\t}else{\n\t\tchild.previousSibling = newLast;\n\t}\n\tdo{\n\t\tnewFirst.parentNode = parent;\n\t}while(newFirst !== newLast && (newFirst= newFirst.nextSibling))\n\t_onUpdateChild(parent.ownerDocument||parent, parent);\n\t//console.log(parent.lastChild.nextSibling == null)\n\tif (node.nodeType == DOCUMENT_FRAGMENT_NODE) {\n\t\tnode.firstChild = node.lastChild = null;\n\t}\n\treturn node;\n}\nfunction _appendSingleChild(parentNode,newChild){\n\tif (newChild.parentNode) {\n\t\tnewChild.parentNode.removeChild(newChild);\n\t}\n\tnewChild.parentNode = parentNode;\n\tnewChild.previousSibling = parentNode.lastChild;\n\tnewChild.nextSibling = null;\n\tif (newChild.previousSibling) {\n\t\tnewChild.previousSibling.nextSibling = newChild;\n\t}else{\n\t\tparentNode.firstChild = newChild;\n\t}\n\tparentNode.lastChild = newChild;\n\t_onUpdateChild(parentNode.ownerDocument,parentNode,newChild);\n\treturn newChild;\n}\n\nDocument.prototype = {\n\t//implementation : null,\n\tnodeName :  '#document',\n\tnodeType :  DOCUMENT_NODE,\n\t/**\n\t * The DocumentType node of the document.\n\t *\n\t * @readonly\n\t * @type DocumentType\n\t */\n\tdoctype :  null,\n\tdocumentElement :  null,\n\t_inc : 1,\n\n\tinsertBefore :  function(newChild, refChild){//raises\n\t\tif(newChild.nodeType == DOCUMENT_FRAGMENT_NODE){\n\t\t\tvar child = newChild.firstChild;\n\t\t\twhile(child){\n\t\t\t\tvar next = child.nextSibling;\n\t\t\t\tthis.insertBefore(child,refChild);\n\t\t\t\tchild = next;\n\t\t\t}\n\t\t\treturn newChild;\n\t\t}\n\t\t_insertBefore(this, newChild, refChild);\n\t\tnewChild.ownerDocument = this;\n\t\tif (this.documentElement === null && newChild.nodeType === ELEMENT_NODE) {\n\t\t\tthis.documentElement = newChild;\n\t\t}\n\n\t\treturn newChild;\n\t},\n\tremoveChild :  function(oldChild){\n\t\tif(this.documentElement == oldChild){\n\t\t\tthis.documentElement = null;\n\t\t}\n\t\treturn _removeChild(this,oldChild);\n\t},\n\treplaceChild: function (newChild, oldChild) {\n\t\t//raises\n\t\t_insertBefore(this, newChild, oldChild, assertPreReplacementValidityInDocument);\n\t\tnewChild.ownerDocument = this;\n\t\tif (oldChild) {\n\t\t\tthis.removeChild(oldChild);\n\t\t}\n\t\tif (isElementNode(newChild)) {\n\t\t\tthis.documentElement = newChild;\n\t\t}\n\t},\n\t// Introduced in DOM Level 2:\n\timportNode : function(importedNode,deep){\n\t\treturn importNode(this,importedNode,deep);\n\t},\n\t// Introduced in DOM Level 2:\n\tgetElementById :\tfunction(id){\n\t\tvar rtv = null;\n\t\t_visitNode(this.documentElement,function(node){\n\t\t\tif(node.nodeType == ELEMENT_NODE){\n\t\t\t\tif(node.getAttribute('id') == id){\n\t\t\t\t\trtv = node;\n\t\t\t\t\treturn true;\n\t\t\t\t}\n\t\t\t}\n\t\t})\n\t\treturn rtv;\n\t},\n\n\t/**\n\t * The `getElementsByClassName` method of `Document` interface returns an array-like object\n\t * of all child elements which have **all** of the given class name(s).\n\t *\n\t * Returns an empty list if `classeNames` is an empty string or only contains HTML white space characters.\n\t *\n\t *\n\t * Warning: This is a live LiveNodeList.\n\t * Changes in the DOM will reflect in the array as the changes occur.\n\t * If an element selected by this array no longer qualifies for the selector,\n\t * it will automatically be removed. Be aware of this for iteration purposes.\n\t *\n\t * @param {string} classNames is a string representing the class name(s) to match; multiple class names are separated by (ASCII-)whitespace\n\t *\n\t * @see https://developer.mozilla.org/en-US/docs/Web/API/Document/getElementsByClassName\n\t * @see https://dom.spec.whatwg.org/#concept-getelementsbyclassname\n\t */\n\tgetElementsByClassName: function(classNames) {\n\t\tvar classNamesSet = toOrderedSet(classNames)\n\t\treturn new LiveNodeList(this, function(base) {\n\t\t\tvar ls = [];\n\t\t\tif (classNamesSet.length > 0) {\n\t\t\t\t_visitNode(base.documentElement, function(node) {\n\t\t\t\t\tif(node !== base && node.nodeType === ELEMENT_NODE) {\n\t\t\t\t\t\tvar nodeClassNames = node.getAttribute('class')\n\t\t\t\t\t\t// can be null if the attribute does not exist\n\t\t\t\t\t\tif (nodeClassNames) {\n\t\t\t\t\t\t\t// before splitting and iterating just compare them for the most common case\n\t\t\t\t\t\t\tvar matches = classNames === nodeClassNames;\n\t\t\t\t\t\t\tif (!matches) {\n\t\t\t\t\t\t\t\tvar nodeClassNamesSet = toOrderedSet(nodeClassNames)\n\t\t\t\t\t\t\t\tmatches = classNamesSet.every(arrayIncludes(nodeClassNamesSet))\n\t\t\t\t\t\t\t}\n\t\t\t\t\t\t\tif(matches) {\n\t\t\t\t\t\t\t\tls.push(node);\n\t\t\t\t\t\t\t}\n\t\t\t\t\t\t}\n\t\t\t\t\t}\n\t\t\t\t});\n\t\t\t}\n\t\t\treturn ls;\n\t\t});\n\t},\n\n\t//document factory method:\n\tcreateElement :\tfunction(tagName){\n\t\tvar node = new Element();\n\t\tnode.ownerDocument = this;\n\t\tnode.nodeName = tagName;\n\t\tnode.tagName = tagName;\n\t\tnode.localName = tagName;\n\t\tnode.childNodes = new NodeList();\n\t\tvar attrs\t= node.attributes = new NamedNodeMap();\n\t\tattrs._ownerElement = node;\n\t\treturn node;\n\t},\n\tcreateDocumentFragment :\tfunction(){\n\t\tvar node = new DocumentFragment();\n\t\tnode.ownerDocument = this;\n\t\tnode.childNodes = new NodeList();\n\t\treturn node;\n\t},\n\tcreateTextNode :\tfunction(data){\n\t\tvar node = new Text();\n\t\tnode.ownerDocument = this;\n\t\tnode.appendData(data)\n\t\treturn node;\n\t},\n\tcreateComment :\tfunction(data){\n\t\tvar node = new Comment();\n\t\tnode.ownerDocument = this;\n\t\tnode.appendData(data)\n\t\treturn node;\n\t},\n\tcreateCDATASection :\tfunction(data){\n\t\tvar node = new CDATASection();\n\t\tnode.ownerDocument = this;\n\t\tnode.appendData(data)\n\t\treturn node;\n\t},\n\tcreateProcessingInstruction :\tfunction(target,data){\n\t\tvar node = new ProcessingInstruction();\n\t\tnode.ownerDocument = this;\n\t\tnode.tagName = node.nodeName = node.target = target;\n\t\tnode.nodeValue = node.data = data;\n\t\treturn node;\n\t},\n\tcreateAttribute :\tfunction(name){\n\t\tvar node = new Attr();\n\t\tnode.ownerDocument\t= this;\n\t\tnode.name = name;\n\t\tnode.nodeName\t= name;\n\t\tnode.localName = name;\n\t\tnode.specified = true;\n\t\treturn node;\n\t},\n\tcreateEntityReference :\tfunction(name){\n\t\tvar node = new EntityReference();\n\t\tnode.ownerDocument\t= this;\n\t\tnode.nodeName\t= name;\n\t\treturn node;\n\t},\n\t// Introduced in DOM Level 2:\n\tcreateElementNS :\tfunction(namespaceURI,qualifiedName){\n\t\tvar node = new Element();\n\t\tvar pl = qualifiedName.split(':');\n\t\tvar attrs\t= node.attributes = new NamedNodeMap();\n\t\tnode.childNodes = new NodeList();\n\t\tnode.ownerDocument = this;\n\t\tnode.nodeName = qualifiedName;\n\t\tnode.tagName = qualifiedName;\n\t\tnode.namespaceURI = namespaceURI;\n\t\tif(pl.length == 2){\n\t\t\tnode.prefix = pl[0];\n\t\t\tnode.localName = pl[1];\n\t\t}else{\n\t\t\t//el.prefix = null;\n\t\t\tnode.localName = qualifiedName;\n\t\t}\n\t\tattrs._ownerElement = node;\n\t\treturn node;\n\t},\n\t// Introduced in DOM Level 2:\n\tcreateAttributeNS :\tfunction(namespaceURI,qualifiedName){\n\t\tvar node = new Attr();\n\t\tvar pl = qualifiedName.split(':');\n\t\tnode.ownerDocument = this;\n\t\tnode.nodeName = qualifiedName;\n\t\tnode.name = qualifiedName;\n\t\tnode.namespaceURI = namespaceURI;\n\t\tnode.specified = true;\n\t\tif(pl.length == 2){\n\t\t\tnode.prefix = pl[0];\n\t\t\tnode.localName = pl[1];\n\t\t}else{\n\t\t\t//el.prefix = null;\n\t\t\tnode.localName = qualifiedName;\n\t\t}\n\t\treturn node;\n\t}\n};\n_extends(Document,Node);\n\n\nfunction Element() {\n\tthis._nsMap = {};\n};\nElement.prototype = {\n\tnodeType : ELEMENT_NODE,\n\thasAttribute : function(name){\n\t\treturn this.getAttributeNode(name)!=null;\n\t},\n\tgetAttribute : function(name){\n\t\tvar attr = this.getAttributeNode(name);\n\t\treturn attr && attr.value || '';\n\t},\n\tgetAttributeNode : function(name){\n\t\treturn this.attributes.getNamedItem(name);\n\t},\n\tsetAttribute : function(name, value){\n\t\tvar attr = this.ownerDocument.createAttribute(name);\n\t\tattr.value = attr.nodeValue = \"\" + value;\n\t\tthis.setAttributeNode(attr)\n\t},\n\tremoveAttribute : function(name){\n\t\tvar attr = this.getAttributeNode(name)\n\t\tattr && this.removeAttributeNode(attr);\n\t},\n\n\t//four real opeartion method\n\tappendChild:function(newChild){\n\t\tif(newChild.nodeType === DOCUMENT_FRAGMENT_NODE){\n\t\t\treturn this.insertBefore(newChild,null);\n\t\t}else{\n\t\t\treturn _appendSingleChild(this,newChild);\n\t\t}\n\t},\n\tsetAttributeNode : function(newAttr){\n\t\treturn this.attributes.setNamedItem(newAttr);\n\t},\n\tsetAttributeNodeNS : function(newAttr){\n\t\treturn this.attributes.setNamedItemNS(newAttr);\n\t},\n\tremoveAttributeNode : function(oldAttr){\n\t\t//console.log(this == oldAttr.ownerElement)\n\t\treturn this.attributes.removeNamedItem(oldAttr.nodeName);\n\t},\n\t//get real attribute name,and remove it by removeAttributeNode\n\tremoveAttributeNS : function(namespaceURI, localName){\n\t\tvar old = this.getAttributeNodeNS(namespaceURI, localName);\n\t\told && this.removeAttributeNode(old);\n\t},\n\n\thasAttributeNS : function(namespaceURI, localName){\n\t\treturn this.getAttributeNodeNS(namespaceURI, localName)!=null;\n\t},\n\tgetAttributeNS : function(namespaceURI, localName){\n\t\tvar attr = this.getAttributeNodeNS(namespaceURI, localName);\n\t\treturn attr && attr.value || '';\n\t},\n\tsetAttributeNS : function(namespaceURI, qualifiedName, value){\n\t\tvar attr = this.ownerDocument.createAttributeNS(namespaceURI, qualifiedName);\n\t\tattr.value = attr.nodeValue = \"\" + value;\n\t\tthis.setAttributeNode(attr)\n\t},\n\tgetAttributeNodeNS : function(namespaceURI, localName){\n\t\treturn this.attributes.getNamedItemNS(namespaceURI, localName);\n\t},\n\n\tgetElementsByTagName : function(tagName){\n\t\treturn new LiveNodeList(this,function(base){\n\t\t\tvar ls = [];\n\t\t\t_visitNode(base,function(node){\n\t\t\t\tif(node !== base && node.nodeType == ELEMENT_NODE && (tagName === '*' || node.tagName == tagName)){\n\t\t\t\t\tls.push(node);\n\t\t\t\t}\n\t\t\t});\n\t\t\treturn ls;\n\t\t});\n\t},\n\tgetElementsByTagNameNS : function(namespaceURI, localName){\n\t\treturn new LiveNodeList(this,function(base){\n\t\t\tvar ls = [];\n\t\t\t_visitNode(base,function(node){\n\t\t\t\tif(node !== base && node.nodeType === ELEMENT_NODE && (namespaceURI === '*' || node.namespaceURI === namespaceURI) && (localName === '*' || node.localName == localName)){\n\t\t\t\t\tls.push(node);\n\t\t\t\t}\n\t\t\t});\n\t\t\treturn ls;\n\n\t\t});\n\t}\n};\nDocument.prototype.getElementsByTagName = Element.prototype.getElementsByTagName;\nDocument.prototype.getElementsByTagNameNS = Element.prototype.getElementsByTagNameNS;\n\n\n_extends(Element,Node);\nfunction Attr() {\n};\nAttr.prototype.nodeType = ATTRIBUTE_NODE;\n_extends(Attr,Node);\n\n\nfunction CharacterData() {\n};\nCharacterData.prototype = {\n\tdata : '',\n\tsubstringData : function(offset, count) {\n\t\treturn this.data.substring(offset, offset+count);\n\t},\n\tappendData: function(text) {\n\t\ttext = this.data+text;\n\t\tthis.nodeValue = this.data = text;\n\t\tthis.length = text.length;\n\t},\n\tinsertData: function(offset,text) {\n\t\tthis.replaceData(offset,0,text);\n\n\t},\n\tappendChild:function(newChild){\n\t\tthrow new Error(ExceptionMessage[HIERARCHY_REQUEST_ERR])\n\t},\n\tdeleteData: function(offset, count) {\n\t\tthis.replaceData(offset,count,\"\");\n\t},\n\treplaceData: function(offset, count, text) {\n\t\tvar start = this.data.substring(0,offset);\n\t\tvar end = this.data.substring(offset+count);\n\t\ttext = start + text + end;\n\t\tthis.nodeValue = this.data = text;\n\t\tthis.length = text.length;\n\t}\n}\n_extends(CharacterData,Node);\nfunction Text() {\n};\nText.prototype = {\n\tnodeName : \"#text\",\n\tnodeType : TEXT_NODE,\n\tsplitText : function(offset) {\n\t\tvar text = this.data;\n\t\tvar newText = text.substring(offset);\n\t\ttext = text.substring(0, offset);\n\t\tthis.data = this.nodeValue = text;\n\t\tthis.length = text.length;\n\t\tvar newNode = this.ownerDocument.createTextNode(newText);\n\t\tif(this.parentNode){\n\t\t\tthis.parentNode.insertBefore(newNode, this.nextSibling);\n\t\t}\n\t\treturn newNode;\n\t}\n}\n_extends(Text,CharacterData);\nfunction Comment() {\n};\nComment.prototype = {\n\tnodeName : \"#comment\",\n\tnodeType : COMMENT_NODE\n}\n_extends(Comment,CharacterData);\n\nfunction CDATASection() {\n};\nCDATASection.prototype = {\n\tnodeName : \"#cdata-section\",\n\tnodeType : CDATA_SECTION_NODE\n}\n_extends(CDATASection,CharacterData);\n\n\nfunction DocumentType() {\n};\nDocumentType.prototype.nodeType = DOCUMENT_TYPE_NODE;\n_extends(DocumentType,Node);\n\nfunction Notation() {\n};\nNotation.prototype.nodeType = NOTATION_NODE;\n_extends(Notation,Node);\n\nfunction Entity() {\n};\nEntity.prototype.nodeType = ENTITY_NODE;\n_extends(Entity,Node);\n\nfunction EntityReference() {\n};\nEntityReference.prototype.nodeType = ENTITY_REFERENCE_NODE;\n_extends(EntityReference,Node);\n\nfunction DocumentFragment() {\n};\nDocumentFragment.prototype.nodeName =\t\"#document-fragment\";\nDocumentFragment.prototype.nodeType =\tDOCUMENT_FRAGMENT_NODE;\n_extends(DocumentFragment,Node);\n\n\nfunction ProcessingInstruction() {\n}\nProcessingInstruction.prototype.nodeType = PROCESSING_INSTRUCTION_NODE;\n_extends(ProcessingInstruction,Node);\nfunction XMLSerializer(){}\nXMLSerializer.prototype.serializeToString = function(node,isHtml,nodeFilter){\n\treturn nodeSerializeToString.call(node,isHtml,nodeFilter);\n}\nNode.prototype.toString = nodeSerializeToString;\nfunction nodeSerializeToString(isHtml,nodeFilter){\n\tvar buf = [];\n\tvar refNode = this.nodeType == 9 && this.documentElement || this;\n\tvar prefix = refNode.prefix;\n\tvar uri = refNode.namespaceURI;\n\n\tif(uri && prefix == null){\n\t\t//console.log(prefix)\n\t\tvar prefix = refNode.lookupPrefix(uri);\n\t\tif(prefix == null){\n\t\t\t//isHTML = true;\n\t\t\tvar visibleNamespaces=[\n\t\t\t{namespace:uri,prefix:null}\n\t\t\t//{namespace:uri,prefix:''}\n\t\t\t]\n\t\t}\n\t}\n\tserializeToString(this,buf,isHtml,nodeFilter,visibleNamespaces);\n\t//console.log('###',this.nodeType,uri,prefix,buf.join(''))\n\treturn buf.join('');\n}\n\nfunction needNamespaceDefine(node, isHTML, visibleNamespaces) {\n\tvar prefix = node.prefix || '';\n\tvar uri = node.namespaceURI;\n\t// According to [Namespaces in XML 1.0](https://www.w3.org/TR/REC-xml-names/#ns-using) ,\n\t// and more specifically https://www.w3.org/TR/REC-xml-names/#nsc-NoPrefixUndecl :\n\t// > In a namespace declaration for a prefix [...], the attribute value MUST NOT be empty.\n\t// in a similar manner [Namespaces in XML 1.1](https://www.w3.org/TR/xml-names11/#ns-using)\n\t// and more specifically https://www.w3.org/TR/xml-names11/#nsc-NSDeclared :\n\t// > [...] Furthermore, the attribute value [...] must not be an empty string.\n\t// so serializing empty namespace value like xmlns:ds=\"\" would produce an invalid XML document.\n\tif (!uri) {\n\t\treturn false;\n\t}\n\tif (prefix === \"xml\" && uri === NAMESPACE.XML || uri === NAMESPACE.XMLNS) {\n\t\treturn false;\n\t}\n\n\tvar i = visibleNamespaces.length\n\twhile (i--) {\n\t\tvar ns = visibleNamespaces[i];\n\t\t// get namespace prefix\n\t\tif (ns.prefix === prefix) {\n\t\t\treturn ns.namespace !== uri;\n\t\t}\n\t}\n\treturn true;\n}\n/**\n * Well-formed constraint: No < in Attribute Values\n * The replacement text of any entity referred to directly or indirectly in an attribute value must not contain a <.\n * @see https://www.w3.org/TR/xml/#CleanAttrVals\n * @see https://www.w3.org/TR/xml/#NT-AttValue\n */\nfunction addSerializedAttribute(buf, qualifiedName, value) {\n\tbuf.push(' ', qualifiedName, '=\"', value.replace(/[<&\"]/g,_xmlEncoder), '\"')\n}\n\nfunction serializeToString(node,buf,isHTML,nodeFilter,visibleNamespaces){\n\tif (!visibleNamespaces) {\n\t\tvisibleNamespaces = [];\n\t}\n\n\tif(nodeFilter){\n\t\tnode = nodeFilter(node);\n\t\tif(node){\n\t\t\tif(typeof node == 'string'){\n\t\t\t\tbuf.push(node);\n\t\t\t\treturn;\n\t\t\t}\n\t\t}else{\n\t\t\treturn;\n\t\t}\n\t\t//buf.sort.apply(attrs, attributeSorter);\n\t}\n\n\tswitch(node.nodeType){\n\tcase ELEMENT_NODE:\n\t\tvar attrs = node.attributes;\n\t\tvar len = attrs.length;\n\t\tvar child = node.firstChild;\n\t\tvar nodeName = node.tagName;\n\n\t\tisHTML = NAMESPACE.isHTML(node.namespaceURI) || isHTML\n\n\t\tvar prefixedNodeName = nodeName\n\t\tif (!isHTML && !node.prefix && node.namespaceURI) {\n\t\t\tvar defaultNS\n\t\t\t// lookup current default ns from `xmlns` attribute\n\t\t\tfor (var ai = 0; ai < attrs.length; ai++) {\n\t\t\t\tif (attrs.item(ai).name === 'xmlns') {\n\t\t\t\t\tdefaultNS = attrs.item(ai).value\n\t\t\t\t\tbreak\n\t\t\t\t}\n\t\t\t}\n\t\t\tif (!defaultNS) {\n\t\t\t\t// lookup current default ns in visibleNamespaces\n\t\t\t\tfor (var nsi = visibleNamespaces.length - 1; nsi >= 0; nsi--) {\n\t\t\t\t\tvar namespace = visibleNamespaces[nsi]\n\t\t\t\t\tif (namespace.prefix === '' && namespace.namespace === node.namespaceURI) {\n\t\t\t\t\t\tdefaultNS = namespace.namespace\n\t\t\t\t\t\tbreak\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\t\t\tif (defaultNS !== node.namespaceURI) {\n\t\t\t\tfor (var nsi = visibleNamespaces.length - 1; nsi >= 0; nsi--) {\n\t\t\t\t\tvar namespace = visibleNamespaces[nsi]\n\t\t\t\t\tif (namespace.namespace === node.namespaceURI) {\n\t\t\t\t\t\tif (namespace.prefix) {\n\t\t\t\t\t\t\tprefixedNodeName = namespace.prefix + ':' + nodeName\n\t\t\t\t\t\t}\n\t\t\t\t\t\tbreak\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\n\t\tbuf.push('<', prefixedNodeName);\n\n\t\tfor(var i=0;i<len;i++){\n\t\t\t// add namespaces for attributes\n\t\t\tvar attr = attrs.item(i);\n\t\t\tif (attr.prefix == 'xmlns') {\n\t\t\t\tvisibleNamespaces.push({ prefix: attr.localName, namespace: attr.value });\n\t\t\t}else if(attr.nodeName == 'xmlns'){\n\t\t\t\tvisibleNamespaces.push({ prefix: '', namespace: attr.value });\n\t\t\t}\n\t\t}\n\n\t\tfor(var i=0;i<len;i++){\n\t\t\tvar attr = attrs.item(i);\n\t\t\tif (needNamespaceDefine(attr,isHTML, visibleNamespaces)) {\n\t\t\t\tvar prefix = attr.prefix||'';\n\t\t\t\tvar uri = attr.namespaceURI;\n\t\t\t\taddSerializedAttribute(buf, prefix ? 'xmlns:' + prefix : \"xmlns\", uri);\n\t\t\t\tvisibleNamespaces.push({ prefix: prefix, namespace:uri });\n\t\t\t}\n\t\t\tserializeToString(attr,buf,isHTML,nodeFilter,visibleNamespaces);\n\t\t}\n\n\t\t// add namespace for current node\n\t\tif (nodeName === prefixedNodeName && needNamespaceDefine(node, isHTML, visibleNamespaces)) {\n\t\t\tvar prefix = node.prefix||'';\n\t\t\tvar uri = node.namespaceURI;\n\t\t\taddSerializedAttribute(buf, prefix ? 'xmlns:' + prefix : \"xmlns\", uri);\n\t\t\tvisibleNamespaces.push({ prefix: prefix, namespace:uri });\n\t\t}\n\n\t\tif(child || isHTML && !/^(?:meta|link|img|br|hr|input)$/i.test(nodeName)){\n\t\t\tbuf.push('>');\n\t\t\t//if is cdata child node\n\t\t\tif(isHTML && /^script$/i.test(nodeName)){\n\t\t\t\twhile(child){\n\t\t\t\t\tif(child.data){\n\t\t\t\t\t\tbuf.push(child.data);\n\t\t\t\t\t}else{\n\t\t\t\t\t\tserializeToString(child, buf, isHTML, nodeFilter, visibleNamespaces.slice());\n\t\t\t\t\t}\n\t\t\t\t\tchild = child.nextSibling;\n\t\t\t\t}\n\t\t\t}else\n\t\t\t{\n\t\t\t\twhile(child){\n\t\t\t\t\tserializeToString(child, buf, isHTML, nodeFilter, visibleNamespaces.slice());\n\t\t\t\t\tchild = child.nextSibling;\n\t\t\t\t}\n\t\t\t}\n\t\t\tbuf.push('</',prefixedNodeName,'>');\n\t\t}else{\n\t\t\tbuf.push('/>');\n\t\t}\n\t\t// remove added visible namespaces\n\t\t//visibleNamespaces.length = startVisibleNamespaces;\n\t\treturn;\n\tcase DOCUMENT_NODE:\n\tcase DOCUMENT_FRAGMENT_NODE:\n\t\tvar child = node.firstChild;\n\t\twhile(child){\n\t\t\tserializeToString(child, buf, isHTML, nodeFilter, visibleNamespaces.slice());\n\t\t\tchild = child.nextSibling;\n\t\t}\n\t\treturn;\n\tcase ATTRIBUTE_NODE:\n\t\treturn addSerializedAttribute(buf, node.name, node.value);\n\tcase TEXT_NODE:\n\t\t/**\n\t\t * The ampersand character (&) and the left angle bracket (<) must not appear in their literal form,\n\t\t * except when used as markup delimiters, or within a comment, a processing instruction, or a CDATA section.\n\t\t * If they are needed elsewhere, they must be escaped using either numeric character references or the strings\n\t\t * `&amp;` and `&lt;` respectively.\n\t\t * The right angle bracket (>) may be represented using the string \" &gt; \", and must, for compatibility,\n\t\t * be escaped using either `&gt;` or a character reference when it appears in the string `]]>` in content,\n\t\t * when that string is not marking the end of a CDATA section.\n\t\t *\n\t\t * In the content of elements, character data is any string of characters\n\t\t * which does not contain the start-delimiter of any markup\n\t\t * and does not include the CDATA-section-close delimiter, `]]>`.\n\t\t *\n\t\t * @see https://www.w3.org/TR/xml/#NT-CharData\n\t\t */\n\t\treturn buf.push(node.data\n\t\t\t.replace(/[<&]/g,_xmlEncoder)\n\t\t\t.replace(/]]>/g, ']]&gt;')\n\t\t);\n\tcase CDATA_SECTION_NODE:\n\t\treturn buf.push( '<![CDATA[',node.data,']]>');\n\tcase COMMENT_NODE:\n\t\treturn buf.push( \"<!--\",node.data,\"-->\");\n\tcase DOCUMENT_TYPE_NODE:\n\t\tvar pubid = node.publicId;\n\t\tvar sysid = node.systemId;\n\t\tbuf.push('<!DOCTYPE ',node.name);\n\t\tif(pubid){\n\t\t\tbuf.push(' PUBLIC ', pubid);\n\t\t\tif (sysid && sysid!='.') {\n\t\t\t\tbuf.push(' ', sysid);\n\t\t\t}\n\t\t\tbuf.push('>');\n\t\t}else if(sysid && sysid!='.'){\n\t\t\tbuf.push(' SYSTEM ', sysid, '>');\n\t\t}else{\n\t\t\tvar sub = node.internalSubset;\n\t\t\tif(sub){\n\t\t\t\tbuf.push(\" [\",sub,\"]\");\n\t\t\t}\n\t\t\tbuf.push(\">\");\n\t\t}\n\t\treturn;\n\tcase PROCESSING_INSTRUCTION_NODE:\n\t\treturn buf.push( \"<?\",node.target,\" \",node.data,\"?>\");\n\tcase ENTITY_REFERENCE_NODE:\n\t\treturn buf.push( '&',node.nodeName,';');\n\t//case ENTITY_NODE:\n\t//case NOTATION_NODE:\n\tdefault:\n\t\tbuf.push('??',node.nodeName);\n\t}\n}\nfunction importNode(doc,node,deep){\n\tvar node2;\n\tswitch (node.nodeType) {\n\tcase ELEMENT_NODE:\n\t\tnode2 = node.cloneNode(false);\n\t\tnode2.ownerDocument = doc;\n\t\t//var attrs = node2.attributes;\n\t\t//var len = attrs.length;\n\t\t//for(var i=0;i<len;i++){\n\t\t\t//node2.setAttributeNodeNS(importNode(doc,attrs.item(i),deep));\n\t\t//}\n\tcase DOCUMENT_FRAGMENT_NODE:\n\t\tbreak;\n\tcase ATTRIBUTE_NODE:\n\t\tdeep = true;\n\t\tbreak;\n\t//case ENTITY_REFERENCE_NODE:\n\t//case PROCESSING_INSTRUCTION_NODE:\n\t////case TEXT_NODE:\n\t//case CDATA_SECTION_NODE:\n\t//case COMMENT_NODE:\n\t//\tdeep = false;\n\t//\tbreak;\n\t//case DOCUMENT_NODE:\n\t//case DOCUMENT_TYPE_NODE:\n\t//cannot be imported.\n\t//case ENTITY_NODE:\n\t//case NOTATION_NODE：\n\t//can not hit in level3\n\t//default:throw e;\n\t}\n\tif(!node2){\n\t\tnode2 = node.cloneNode(false);//false\n\t}\n\tnode2.ownerDocument = doc;\n\tnode2.parentNode = null;\n\tif(deep){\n\t\tvar child = node.firstChild;\n\t\twhile(child){\n\t\t\tnode2.appendChild(importNode(doc,child,deep));\n\t\t\tchild = child.nextSibling;\n\t\t}\n\t}\n\treturn node2;\n}\n//\n//var _relationMap = {firstChild:1,lastChild:1,previousSibling:1,nextSibling:1,\n//\t\t\t\t\tattributes:1,childNodes:1,parentNode:1,documentElement:1,doctype,};\nfunction cloneNode(doc,node,deep){\n\tvar node2 = new node.constructor();\n\tfor (var n in node) {\n\t\tif (Object.prototype.hasOwnProperty.call(node, n)) {\n\t\t\tvar v = node[n];\n\t\t\tif (typeof v != \"object\") {\n\t\t\t\tif (v != node2[n]) {\n\t\t\t\t\tnode2[n] = v;\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\t}\n\tif(node.childNodes){\n\t\tnode2.childNodes = new NodeList();\n\t}\n\tnode2.ownerDocument = doc;\n\tswitch (node2.nodeType) {\n\tcase ELEMENT_NODE:\n\t\tvar attrs\t= node.attributes;\n\t\tvar attrs2\t= node2.attributes = new NamedNodeMap();\n\t\tvar len = attrs.length\n\t\tattrs2._ownerElement = node2;\n\t\tfor(var i=0;i<len;i++){\n\t\t\tnode2.setAttributeNode(cloneNode(doc,attrs.item(i),true));\n\t\t}\n\t\tbreak;;\n\tcase ATTRIBUTE_NODE:\n\t\tdeep = true;\n\t}\n\tif(deep){\n\t\tvar child = node.firstChild;\n\t\twhile(child){\n\t\t\tnode2.appendChild(cloneNode(doc,child,deep));\n\t\t\tchild = child.nextSibling;\n\t\t}\n\t}\n\treturn node2;\n}\n\nfunction __set__(object,key,value){\n\tobject[key] = value\n}\n//do dynamic\ntry{\n\tif(Object.defineProperty){\n\t\tObject.defineProperty(LiveNodeList.prototype,'length',{\n\t\t\tget:function(){\n\t\t\t\t_updateLiveList(this);\n\t\t\t\treturn this.$$length;\n\t\t\t}\n\t\t});\n\n\t\tObject.defineProperty(Node.prototype,'textContent',{\n\t\t\tget:function(){\n\t\t\t\treturn getTextContent(this);\n\t\t\t},\n\n\t\t\tset:function(data){\n\t\t\t\tswitch(this.nodeType){\n\t\t\t\tcase ELEMENT_NODE:\n\t\t\t\tcase DOCUMENT_FRAGMENT_NODE:\n\t\t\t\t\twhile(this.firstChild){\n\t\t\t\t\t\tthis.removeChild(this.firstChild);\n\t\t\t\t\t}\n\t\t\t\t\tif(data || String(data)){\n\t\t\t\t\t\tthis.appendChild(this.ownerDocument.createTextNode(data));\n\t\t\t\t\t}\n\t\t\t\t\tbreak;\n\n\t\t\t\tdefault:\n\t\t\t\t\tthis.data = data;\n\t\t\t\t\tthis.value = data;\n\t\t\t\t\tthis.nodeValue = data;\n\t\t\t\t}\n\t\t\t}\n\t\t})\n\n\t\tfunction getTextContent(node){\n\t\t\tswitch(node.nodeType){\n\t\t\tcase ELEMENT_NODE:\n\t\t\tcase DOCUMENT_FRAGMENT_NODE:\n\t\t\t\tvar buf = [];\n\t\t\t\tnode = node.firstChild;\n\t\t\t\twhile(node){\n\t\t\t\t\tif(node.nodeType!==7 && node.nodeType !==8){\n\t\t\t\t\t\tbuf.push(getTextContent(node));\n\t\t\t\t\t}\n\t\t\t\t\tnode = node.nextSibling;\n\t\t\t\t}\n\t\t\t\treturn buf.join('');\n\t\t\tdefault:\n\t\t\t\treturn node.nodeValue;\n\t\t\t}\n\t\t}\n\n\t\t__set__ = function(object,key,value){\n\t\t\t//console.log(value)\n\t\t\tobject['$$'+key] = value\n\t\t}\n\t}\n}catch(e){//ie8\n}\n\n//if(typeof require == 'function'){\n\texports.DocumentType = DocumentType;\n\texports.DOMException = DOMException;\n\texports.DOMImplementation = DOMImplementation;\n\texports.Element = Element;\n\texports.Node = Node;\n\texports.NodeList = NodeList;\n\texports.XMLSerializer = XMLSerializer;\n//}\n","var toString = {}.toString;\n\nmodule.exports = Array.isArray || function (arr) {\n  return toString.call(arr) == '[object Array]';\n};\n","// Detect RTL scroll type\n// Based on https://github.com/othree/jquery.rtl-scroll-type/blob/master/src/jquery.rtl-scroll.js\nexport default function scrollType() {\n\tvar type = \"reverse\";\n\tvar definer = createDefiner();\n\tdocument.body.appendChild(definer);\n\n\tif (definer.scrollLeft > 0) {\n\t\ttype = \"default\";\n\t} else {\n\t\tif (typeof Element !== 'undefined' && Element.prototype.scrollIntoView) {\n\t\t\tdefiner.children[0].children[1].scrollIntoView();\n\t\t\tif (definer.scrollLeft < 0) {\n\t\t\t\ttype = \"negative\";\n\t\t\t}\n\t\t} else {\n\t\t\tdefiner.scrollLeft = 1;\n\t\t\tif (definer.scrollLeft === 0) {\n\t\t\t\ttype = \"negative\";\n\t\t\t}\n\t\t}\n\t}\n\n\tdocument.body.removeChild(definer);\n\treturn type;\n}\n\nexport function createDefiner() {\n\tvar definer = document.createElement('div');\n\tdefiner.dir=\"rtl\";\n\n\tdefiner.style.position = \"fixed\";\n\tdefiner.style.width = \"1px\";\n\tdefiner.style.height = \"1px\";\n\tdefiner.style.top = \"0px\";\n\tdefiner.style.left = \"0px\";\n\tdefiner.style.overflow = \"hidden\";\n\n\tvar innerDiv = document.createElement('div');\n\tinnerDiv.style.width = \"2px\";\n\n\tvar spanA = document.createElement('span');\n\tspanA.style.width = \"1px\";\n\tspanA.style.display = \"inline-block\";\n\n\tvar spanB = document.createElement('span');\n\tspanB.style.width = \"1px\";\n\tspanB.style.display = \"inline-block\";\n\n\tinnerDiv.appendChild(spanA);\n\tinnerDiv.appendChild(spanB);\n\tdefiner.appendChild(innerDiv);\n\n\treturn definer;\n}\n","import {uuid, isNumber, isElement, windowBounds, extend} from \"../../utils/core\";\nimport throttle from 'lodash/throttle'\n\nclass Stage {\n\tconstructor(_options) {\n\t\tthis.settings = _options || {};\n\t\tthis.id = \"epubjs-container-\" + uuid();\n\n\t\tthis.container = this.create(this.settings);\n\n\t\tif(this.settings.hidden) {\n\t\t\tthis.wrapper = this.wrap(this.container);\n\t\t}\n\n\t}\n\n\t/*\n\t* Creates an element to render to.\n\t* Resizes to passed width and height or to the elements size\n\t*/\n\tcreate(options){\n\t\tlet height  = options.height;// !== false ? options.height : \"100%\";\n\t\tlet width   = options.width;// !== false ? options.width : \"100%\";\n\t\tlet overflow  = options.overflow || false;\n\t\tlet axis = options.axis || \"vertical\";\n\t\tlet direction = options.direction;\n\n\t\textend(this.settings, options);\n\n\t\tif(options.height && isNumber(options.height)) {\n\t\t\theight = options.height + \"px\";\n\t\t}\n\n\t\tif(options.width && isNumber(options.width)) {\n\t\t\twidth = options.width + \"px\";\n\t\t}\n\n\t\t// Create new container element\n\t\tlet container = document.createElement(\"div\");\n\n\t\tcontainer.id = this.id;\n\t\tcontainer.classList.add(\"epub-container\");\n\n\t\t// Style Element\n\t\t// container.style.fontSize = \"0\";\n\t\tcontainer.style.wordSpacing = \"0\";\n\t\tcontainer.style.lineHeight = \"0\";\n\t\tcontainer.style.verticalAlign = \"top\";\n\t\tcontainer.style.position = \"relative\";\n\n\t\tif(axis === \"horizontal\") {\n\t\t\t// container.style.whiteSpace = \"nowrap\";\n\t\t\tcontainer.style.display = \"flex\";\n\t\t\tcontainer.style.flexDirection = \"row\";\n\t\t\tcontainer.style.flexWrap = \"nowrap\";\n\t\t}\n\n\t\tif(width){\n\t\t\tcontainer.style.width = width;\n\t\t}\n\n\t\tif(height){\n\t\t\tcontainer.style.height = height;\n\t\t}\n\n\t\tif (overflow) {\n\t\t\tif (overflow === \"scroll\" && axis === \"vertical\") {\n\t\t\t\tcontainer.style[\"overflow-y\"] = overflow;\n\t\t\t\tcontainer.style[\"overflow-x\"] = \"hidden\";\n\t\t\t} else if (overflow === \"scroll\" && axis === \"horizontal\") {\n\t\t\t\tcontainer.style[\"overflow-y\"] = \"hidden\";\n\t\t\t\tcontainer.style[\"overflow-x\"] = overflow;\n\t\t\t} else {\n\t\t\t\tcontainer.style[\"overflow\"] = overflow;\n\t\t\t}\n\t\t}\n\n\t\tif (direction) {\n\t\t\tcontainer.dir = direction;\n\t\t\tcontainer.style[\"direction\"] = direction;\n\t\t}\n\n\t\tif (direction && this.settings.fullsize) {\n\t\t\tdocument.body.style[\"direction\"] = direction;\n\t\t}\n\n\t\treturn container;\n\t}\n\n\twrap(container) {\n\t\tvar wrapper = document.createElement(\"div\");\n\n\t\twrapper.style.visibility = \"hidden\";\n\t\twrapper.style.overflow = \"hidden\";\n\t\twrapper.style.width = \"0\";\n\t\twrapper.style.height = \"0\";\n\n\t\twrapper.appendChild(container);\n\t\treturn wrapper;\n\t}\n\n\n\tgetElement(_element){\n\t\tvar element;\n\n\t\tif(isElement(_element)) {\n\t\t\telement = _element;\n\t\t} else if (typeof _element === \"string\") {\n\t\t\telement = document.getElementById(_element);\n\t\t}\n\n\t\tif(!element){\n\t\t\tthrow new Error(\"Not an Element\");\n\t\t}\n\n\t\treturn element;\n\t}\n\n\tattachTo(what){\n\n\t\tvar element = this.getElement(what);\n\t\tvar base;\n\n\t\tif(!element){\n\t\t\treturn;\n\t\t}\n\n\t\tif(this.settings.hidden) {\n\t\t\tbase = this.wrapper;\n\t\t} else {\n\t\t\tbase = this.container;\n\t\t}\n\n\t\telement.appendChild(base);\n\n\t\tthis.element = element;\n\n\t\treturn element;\n\n\t}\n\n\tgetContainer() {\n\t\treturn this.container;\n\t}\n\n\tonResize(func){\n\t\t// Only listen to window for resize event if width and height are not fixed.\n\t\t// This applies if it is set to a percent or auto.\n\t\tif(!isNumber(this.settings.width) ||\n\t\t\t !isNumber(this.settings.height) ) {\n\t\t\tthis.resizeFunc = throttle(func, 50);\n\t\t\twindow.addEventListener(\"resize\", this.resizeFunc, false);\n\t\t}\n\n\t}\n\n\tonOrientationChange(func){\n\t\tthis.orientationChangeFunc = func;\n\t\twindow.addEventListener(\"orientationchange\", this.orientationChangeFunc, false);\n\t}\n\n\tsize(width, height){\n\t\tvar bounds;\n\t\tlet _width = width || this.settings.width;\n\t\tlet _height = height || this.settings.height;\n\n\t\t// If width or height are set to false, inherit them from containing element\n\t\tif(width === null) {\n\t\t\tbounds = this.element.getBoundingClientRect();\n\n\t\t\tif(bounds.width) {\n\t\t\t\twidth = Math.floor(bounds.width);\n\t\t\t\tthis.container.style.width = width + \"px\";\n\t\t\t}\n\t\t} else {\n\t\t\tif (isNumber(width)) {\n\t\t\t\tthis.container.style.width = width + \"px\";\n\t\t\t} else {\n\t\t\t\tthis.container.style.width = width;\n\t\t\t}\n\t\t}\n\n\t\tif(height === null) {\n\t\t\tbounds = bounds || this.element.getBoundingClientRect();\n\n\t\t\tif(bounds.height) {\n\t\t\t\theight = bounds.height;\n\t\t\t\tthis.container.style.height = height + \"px\";\n\t\t\t}\n\n\t\t} else {\n\t\t\tif (isNumber(height)) {\n\t\t\t\tthis.container.style.height = height + \"px\";\n\t\t\t} else {\n\t\t\t\tthis.container.style.height = height;\n\t\t\t}\n\t\t}\n\n\t\tif(!isNumber(width)) {\n\t\t\twidth = this.container.clientWidth;\n\t\t}\n\n\t\tif(!isNumber(height)) {\n\t\t\theight = this.container.clientHeight;\n\t\t}\n\n\t\tthis.containerStyles = window.getComputedStyle(this.container);\n\n\t\tthis.containerPadding = {\n\t\t\tleft: parseFloat(this.containerStyles[\"padding-left\"]) || 0,\n\t\t\tright: parseFloat(this.containerStyles[\"padding-right\"]) || 0,\n\t\t\ttop: parseFloat(this.containerStyles[\"padding-top\"]) || 0,\n\t\t\tbottom: parseFloat(this.containerStyles[\"padding-bottom\"]) || 0\n\t\t};\n\n\t\t// Bounds not set, get them from window\n\t\tlet _windowBounds = windowBounds();\n\t\tlet bodyStyles = window.getComputedStyle(document.body);\n\t\tlet bodyPadding = {\n\t\t\tleft: parseFloat(bodyStyles[\"padding-left\"]) || 0,\n\t\t\tright: parseFloat(bodyStyles[\"padding-right\"]) || 0,\n\t\t\ttop: parseFloat(bodyStyles[\"padding-top\"]) || 0,\n\t\t\tbottom: parseFloat(bodyStyles[\"padding-bottom\"]) || 0\n\t\t};\n\n\t\tif (!_width) {\n\t\t\twidth = _windowBounds.width -\n\t\t\t\t\t\t\t\tbodyPadding.left -\n\t\t\t\t\t\t\t\tbodyPadding.right;\n\t\t}\n\n\t\tif ((this.settings.fullsize && !_height) || !_height) {\n\t\t\theight = _windowBounds.height -\n\t\t\t\t\t\t\t\tbodyPadding.top -\n\t\t\t\t\t\t\t\tbodyPadding.bottom;\n\t\t}\n\n\t\treturn {\n\t\t\twidth: width -\n\t\t\t\t\t\t\tthis.containerPadding.left -\n\t\t\t\t\t\t\tthis.containerPadding.right,\n\t\t\theight: height -\n\t\t\t\t\t\t\tthis.containerPadding.top -\n\t\t\t\t\t\t\tthis.containerPadding.bottom\n\t\t};\n\n\t}\n\n\tbounds(){\n\t\tlet box;\n\t\tif (this.container.style.overflow !== \"visible\") {\n\t\t\tbox = this.container && this.container.getBoundingClientRect();\n\t\t}\n\n\t\tif(!box || !box.width || !box.height) {\n\t\t\treturn windowBounds();\n\t\t} else {\n\t\t\treturn box;\n\t\t}\n\n\t}\n\n\tgetSheet(){\n\t\tvar style = document.createElement(\"style\");\n\n\t\t// WebKit hack --> https://davidwalsh.name/add-rules-stylesheets\n\t\tstyle.appendChild(document.createTextNode(\"\"));\n\n\t\tdocument.head.appendChild(style);\n\n\t\treturn style.sheet;\n\t}\n\n\taddStyleRules(selector, rulesArray){\n\t\tvar scope = \"#\" + this.id + \" \";\n\t\tvar rules = \"\";\n\n\t\tif(!this.sheet){\n\t\t\tthis.sheet = this.getSheet();\n\t\t}\n\n\t\trulesArray.forEach(function(set) {\n\t\t\tfor (var prop in set) {\n\t\t\t\tif(set.hasOwnProperty(prop)) {\n\t\t\t\t\trules += prop + \":\" + set[prop] + \";\";\n\t\t\t\t}\n\t\t\t}\n\t\t});\n\n\t\tthis.sheet.insertRule(scope + selector + \" {\" + rules + \"}\", 0);\n\t}\n\n\taxis(axis) {\n\t\tif(axis === \"horizontal\") {\n\t\t\tthis.container.style.display = \"flex\";\n\t\t\tthis.container.style.flexDirection = \"row\";\n\t\t\tthis.container.style.flexWrap = \"nowrap\";\n\t\t} else {\n\t\t\tthis.container.style.display = \"block\";\n\t\t}\n\t\tthis.settings.axis = axis;\n\t}\n\n\t// orientation(orientation) {\n\t// \tif (orientation === \"landscape\") {\n\t//\n\t// \t} else {\n\t//\n\t// \t}\n\t//\n\t// \tthis.orientation = orientation;\n\t// }\n\n\tdirection(dir) {\n\t\tif (this.container) {\n\t\t\tthis.container.dir = dir;\n\t\t\tthis.container.style[\"direction\"] = dir;\n\t\t}\n\n\t\tif (this.settings.fullsize) {\n\t\t\tdocument.body.style[\"direction\"] = dir;\n\t\t}\n\t\tthis.settings.dir = dir;\n\t}\n\n\toverflow(overflow) {\n\t\tif (this.container) {\n\t\t\tif (overflow === \"scroll\" && this.settings.axis === \"vertical\") {\n\t\t\t\tthis.container.style[\"overflow-y\"] = overflow;\n\t\t\t\tthis.container.style[\"overflow-x\"] = \"hidden\";\n\t\t\t} else if (overflow === \"scroll\" && this.settings.axis === \"horizontal\") {\n\t\t\t\tthis.container.style[\"overflow-y\"] = \"hidden\";\n\t\t\t\tthis.container.style[\"overflow-x\"] = overflow;\n\t\t\t} else {\n\t\t\t\tthis.container.style[\"overflow\"] = overflow;\n\t\t\t}\n\t\t}\n\t\tthis.settings.overflow = overflow;\n\t}\n\n\tdestroy() {\n\t\tvar base;\n\n\t\tif (this.element) {\n\n\t\t\tif(this.settings.hidden) {\n\t\t\t\tbase = this.wrapper;\n\t\t\t} else {\n\t\t\t\tbase = this.container;\n\t\t\t}\n\n\t\t\tif(this.element.contains(this.container)) {\n\t\t\t\tthis.element.removeChild(this.container);\n\t\t\t}\n\n\t\t\twindow.removeEventListener(\"resize\", this.resizeFunc);\n\t\t\twindow.removeEventListener(\"orientationChange\", this.orientationChangeFunc);\n\n\t\t}\n\t}\n}\n\nexport default Stage;\n","class Views {\n\tconstructor(container) {\n\t\tthis.container = container;\n\t\tthis._views = [];\n\t\tthis.length = 0;\n\t\tthis.hidden = false;\n\t}\n\n\tall() {\n\t\treturn this._views;\n\t}\n\n\tfirst() {\n\t\treturn this._views[0];\n\t}\n\n\tlast() {\n\t\treturn this._views[this._views.length-1];\n\t}\n\n\tindexOf(view) {\n\t\treturn this._views.indexOf(view);\n\t}\n\n\tslice() {\n\t\treturn this._views.slice.apply(this._views, arguments);\n\t}\n\n\tget(i) {\n\t\treturn this._views[i];\n\t}\n\n\tappend(view){\n\t\tthis._views.push(view);\n\t\tif(this.container){\n\t\t\tthis.container.appendChild(view.element);\n\t\t}\n\t\tthis.length++;\n\t\treturn view;\n\t}\n\n\tprepend(view){\n\t\tthis._views.unshift(view);\n\t\tif(this.container){\n\t\t\tthis.container.insertBefore(view.element, this.container.firstChild);\n\t\t}\n\t\tthis.length++;\n\t\treturn view;\n\t}\n\n\tinsert(view, index) {\n\t\tthis._views.splice(index, 0, view);\n\n\t\tif(this.container){\n\t\t\tif(index < this.container.children.length){\n\t\t\t\tthis.container.insertBefore(view.element, this.container.children[index]);\n\t\t\t} else {\n\t\t\t\tthis.container.appendChild(view.element);\n\t\t\t}\n\t\t}\n\n\t\tthis.length++;\n\t\treturn view;\n\t}\n\n\tremove(view) {\n\t\tvar index = this._views.indexOf(view);\n\n\t\tif(index > -1) {\n\t\t\tthis._views.splice(index, 1);\n\t\t}\n\n\n\t\tthis.destroy(view);\n\n\t\tthis.length--;\n\t}\n\n\tdestroy(view) {\n\t\tif(view.displayed){\n\t\t\tview.destroy();\n\t\t}\n\t\t\n\t\tif(this.container){\n\t\t\t this.container.removeChild(view.element);\n\t\t}\n\t\tview = null;\n\t}\n\n\t// Iterators\n\n\tforEach() {\n\t\treturn this._views.forEach.apply(this._views, arguments);\n\t}\n\n\tclear(){\n\t\t// Remove all views\n\t\tvar view;\n\t\tvar len = this.length;\n\n\t\tif(!this.length) return;\n\n\t\tfor (var i = 0; i < len; i++) {\n\t\t\tview = this._views[i];\n\t\t\tthis.destroy(view);\n\t\t}\n\n\t\tthis._views = [];\n\t\tthis.length = 0;\n\t}\n\n\tfind(section){\n\n\t\tvar view;\n\t\tvar len = this.length;\n\n\t\tfor (var i = 0; i < len; i++) {\n\t\t\tview = this._views[i];\n\t\t\tif(view.displayed && view.section.index == section.index) {\n\t\t\t\treturn view;\n\t\t\t}\n\t\t}\n\n\t}\n\n\tdisplayed(){\n\t\tvar displayed = [];\n\t\tvar view;\n\t\tvar len = this.length;\n\n\t\tfor (var i = 0; i < len; i++) {\n\t\t\tview = this._views[i];\n\t\t\tif(view.displayed){\n\t\t\t\tdisplayed.push(view);\n\t\t\t}\n\t\t}\n\t\treturn displayed;\n\t}\n\n\tshow(){\n\t\tvar view;\n\t\tvar len = this.length;\n\n\t\tfor (var i = 0; i < len; i++) {\n\t\t\tview = this._views[i];\n\t\t\tif(view.displayed){\n\t\t\t\tview.show();\n\t\t\t}\n\t\t}\n\t\tthis.hidden = false;\n\t}\n\n\thide(){\n\t\tvar view;\n\t\tvar len = this.length;\n\n\t\tfor (var i = 0; i < len; i++) {\n\t\t\tview = this._views[i];\n\t\t\tif(view.displayed){\n\t\t\t\tview.hide();\n\t\t\t}\n\t\t}\n\t\tthis.hidden = true;\n\t}\n}\n\nexport default Views;\n","import EventEmitter from \"event-emitter\";\nimport {extend, defer, windowBounds, isNumber} from \"../../utils/core\";\nimport scrollType from \"../../utils/scrolltype\";\nimport Mapping from \"../../mapping\";\nimport Queue from \"../../utils/queue\";\nimport Stage from \"../helpers/stage\";\nimport Views from \"../helpers/views\";\nimport { EVENTS } from \"../../utils/constants\";\n\nclass DefaultViewManager {\n\tconstructor(options) {\n\n\t\tthis.name = \"default\";\n\t\tthis.optsSettings = options.settings;\n\t\tthis.View = options.view;\n\t\tthis.request = options.request;\n\t\tthis.renditionQueue = options.queue;\n\t\tthis.q = new Queue(this);\n\n\t\tthis.settings = extend(this.settings || {}, {\n\t\t\tinfinite: true,\n\t\t\thidden: false,\n\t\t\twidth: undefined,\n\t\t\theight: undefined,\n\t\t\taxis: undefined,\n\t\t\twritingMode: undefined,\n\t\t\tflow: \"scrolled\",\n\t\t\tignoreClass: \"\",\n\t\t\tfullsize: undefined,\n\t\t\tallowScriptedContent: false,\n\t\t\tallowPopups: false\n\t\t});\n\n\t\textend(this.settings, options.settings || {});\n\n\t\tthis.viewSettings = {\n\t\t\tignoreClass: this.settings.ignoreClass,\n\t\t\taxis: this.settings.axis,\n\t\t\tflow: this.settings.flow,\n\t\t\tlayout: this.layout,\n\t\t\tmethod: this.settings.method, // srcdoc, blobUrl, write\n\t\t\twidth: 0,\n\t\t\theight: 0,\n\t\t\tforceEvenPages: true,\n\t\t\tallowScriptedContent: this.settings.allowScriptedContent,\n\t\t\tallowPopups: this.settings.allowPopups\n\t\t};\n\n\t\tthis.rendered = false;\n\n\t}\n\n\trender(element, size){\n\t\tlet tag = element.tagName;\n\n\t\tif (typeof this.settings.fullsize === \"undefined\" &&\n\t\t\t\ttag && (tag.toLowerCase() == \"body\" ||\n\t\t\t\ttag.toLowerCase() == \"html\")) {\n\t\t\t\tthis.settings.fullsize = true;\n\t\t}\n\n\t\tif (this.settings.fullsize) {\n\t\t\tthis.settings.overflow = \"visible\";\n\t\t\tthis.overflow = this.settings.overflow;\n\t\t}\n\n\t\tthis.settings.size = size;\n\n\t\tthis.settings.rtlScrollType = scrollType();\n\n\t\t// Save the stage\n\t\tthis.stage = new Stage({\n\t\t\twidth: size.width,\n\t\t\theight: size.height,\n\t\t\toverflow: this.overflow,\n\t\t\thidden: this.settings.hidden,\n\t\t\taxis: this.settings.axis,\n\t\t\tfullsize: this.settings.fullsize,\n\t\t\tdirection: this.settings.direction\n\t\t});\n\n\t\tthis.stage.attachTo(element);\n\n\t\t// Get this stage container div\n\t\tthis.container = this.stage.getContainer();\n\n\t\t// Views array methods\n\t\tthis.views = new Views(this.container);\n\n\t\t// Calculate Stage Size\n\t\tthis._bounds = this.bounds();\n\t\tthis._stageSize = this.stage.size();\n\n\t\t// Set the dimensions for views\n\t\tthis.viewSettings.width = this._stageSize.width;\n\t\tthis.viewSettings.height = this._stageSize.height;\n\n\t\t// Function to handle a resize event.\n\t\t// Will only attach if width and height are both fixed.\n\t\tthis.stage.onResize(this.onResized.bind(this));\n\n\t\tthis.stage.onOrientationChange(this.onOrientationChange.bind(this));\n\n\t\t// Add Event Listeners\n\t\tthis.addEventListeners();\n\n\t\t// Add Layout method\n\t\t// this.applyLayoutMethod();\n\t\tif (this.layout) {\n\t\t\tthis.updateLayout();\n\t\t}\n\n\t\tthis.rendered = true;\n\n\t}\n\n\taddEventListeners(){\n\t\tvar scroller;\n\n\t\twindow.addEventListener(\"unload\", function(e){\n\t\t\tthis.destroy();\n\t\t}.bind(this));\n\n\t\tif(!this.settings.fullsize) {\n\t\t\tscroller = this.container;\n\t\t} else {\n\t\t\tscroller = window;\n\t\t}\n\n\t\tthis._onScroll = this.onScroll.bind(this);\n\t\tscroller.addEventListener(\"scroll\", this._onScroll);\n\t}\n\n\tremoveEventListeners(){\n\t\tvar scroller;\n\n\t\tif(!this.settings.fullsize) {\n\t\t\tscroller = this.container;\n\t\t} else {\n\t\t\tscroller = window;\n\t\t}\n\n\t\tscroller.removeEventListener(\"scroll\", this._onScroll);\n\t\tthis._onScroll = undefined;\n\t}\n\n\tdestroy(){\n\t\tclearTimeout(this.orientationTimeout);\n\t\tclearTimeout(this.resizeTimeout);\n\t\tclearTimeout(this.afterScrolled);\n\n\t\tthis.clear();\n\n\t\tthis.removeEventListeners();\n\n\t\tthis.stage.destroy();\n\n\t\tthis.rendered = false;\n\n\t\t/*\n\n\t\t\tclearTimeout(this.trimTimeout);\n\t\t\tif(this.settings.hidden) {\n\t\t\t\tthis.element.removeChild(this.wrapper);\n\t\t\t} else {\n\t\t\t\tthis.element.removeChild(this.container);\n\t\t\t}\n\t\t*/\n\t}\n\n\tonOrientationChange(e) {\n\t\tlet {orientation} = window;\n\n\t\tif(this.optsSettings.resizeOnOrientationChange) {\n\t\t\tthis.resize();\n\t\t}\n\n\t\t// Per ampproject:\n\t\t// In IOS 10.3, the measured size of an element is incorrect if the\n\t\t// element size depends on window size directly and the measurement\n\t\t// happens in window.resize event. Adding a timeout for correct\n\t\t// measurement. See https://github.com/ampproject/amphtml/issues/8479\n\t\tclearTimeout(this.orientationTimeout);\n\t\tthis.orientationTimeout = setTimeout(function(){\n\t\t\tthis.orientationTimeout = undefined;\n\n\t\t\tif(this.optsSettings.resizeOnOrientationChange) {\n\t\t\t\tthis.resize();\n\t\t\t}\n\n\t\t\tthis.emit(EVENTS.MANAGERS.ORIENTATION_CHANGE, orientation);\n\t\t}.bind(this), 500);\n\n\t}\n\n\tonResized(e) {\n\t\tthis.resize();\n\t}\n\n\tresize(width, height, epubcfi){\n\t\tlet stageSize = this.stage.size(width, height);\n\n\t\t// For Safari, wait for orientation to catch up\n\t\t// if the window is a square\n\t\tthis.winBounds = windowBounds();\n\t\tif (this.orientationTimeout &&\n\t\t\t\tthis.winBounds.width === this.winBounds.height) {\n\t\t\t// reset the stage size for next resize\n\t\t\tthis._stageSize = undefined;\n\t\t\treturn;\n\t\t}\n\n\t\tif (this._stageSize &&\n\t\t\t\tthis._stageSize.width === stageSize.width &&\n\t\t\t\tthis._stageSize.height === stageSize.height ) {\n\t\t\t// Size is the same, no need to resize\n\t\t\treturn;\n\t\t}\n\n\t\tthis._stageSize = stageSize;\n\n\t\tthis._bounds = this.bounds();\n\n\t\t// Clear current views\n\t\tthis.clear();\n\n\t\t// Update for new views\n\t\tthis.viewSettings.width = this._stageSize.width;\n\t\tthis.viewSettings.height = this._stageSize.height;\n\n\t\tthis.updateLayout();\n\n\t\tthis.emit(EVENTS.MANAGERS.RESIZED, {\n\t\t\twidth: this._stageSize.width,\n\t\t\theight: this._stageSize.height\n\t\t}, epubcfi);\n\t}\n\n\tcreateView(section, forceRight) {\n\t\treturn new this.View(section, extend(this.viewSettings, { forceRight }) );\n\t}\n\n\thandleNextPrePaginated(forceRight, section, action) {\n\t\tlet next;\n\n\t\tif (this.layout.name === \"pre-paginated\" && this.layout.divisor > 1) {\n\t\t\tif (forceRight || section.index === 0) {\n\t\t\t\t// First page (cover) should stand alone for pre-paginated books\n\t\t\t\treturn;\n\t\t\t}\n\t\t\tnext = section.next();\n\t\t\tif (next && !next.properties.includes(\"page-spread-left\")) {\n\t\t\t\treturn action.call(this, next);\n\t\t\t}\n\t\t}\n\t}\n\n\tdisplay(section, target){\n\n\t\tvar displaying = new defer();\n\t\tvar displayed = displaying.promise;\n\n\t\t// Check if moving to target is needed\n\t\tif (target === section.href || isNumber(target)) {\n\t\t\ttarget = undefined;\n\t\t}\n\n\t\t// Check to make sure the section we want isn't already shown\n\t\tvar visible = this.views.find(section);\n\n\t\t// View is already shown, just move to correct location in view\n\t\tif(visible && section && this.layout.name !== \"pre-paginated\") {\n\t\t\tlet offset = visible.offset();\n\n\t\t\tif (this.settings.direction === \"ltr\") {\n\t\t\t\tthis.scrollTo(offset.left, offset.top, true);\n\t\t\t} else {\n\t\t\t\tlet width = visible.width();\n\t\t\t\tthis.scrollTo(offset.left + width, offset.top, true);\n\t\t\t}\n\n\t\t\tif(target) {\n\t\t\t\tlet offset = visible.locationOf(target);\n\t\t\t\tlet width = visible.width();\n\t\t\t\tthis.moveTo(offset, width);\n\t\t\t}\n\n\t\t\tdisplaying.resolve();\n\t\t\treturn displayed;\n\t\t}\n\n\t\t// Hide all current views\n\t\tthis.clear();\n\n\t\tlet forceRight = false;\n\t\tif (this.layout.name === \"pre-paginated\" && this.layout.divisor === 2 && section.properties.includes(\"page-spread-right\")) {\n\t\t\tforceRight = true;\n\t\t}\n\n\t\tthis.add(section, forceRight)\n\t\t\t.then(function(view){\n\n\t\t\t\t// Move to correct place within the section, if needed\n\t\t\t\tif(target) {\n\t\t\t\t\tlet offset = view.locationOf(target);\n\t\t\t\t\tlet width = view.width();\n\t\t\t\t\tthis.moveTo(offset, width);\n\t\t\t\t}\n\n\t\t\t}.bind(this), (err) => {\n\t\t\t\tdisplaying.reject(err);\n\t\t\t})\n\t\t\t.then(function(){\n\t\t\t\treturn this.handleNextPrePaginated(forceRight, section, this.add);\n\t\t\t}.bind(this))\n\t\t\t.then(function(){\n\n\t\t\t\tthis.views.show();\n\n\t\t\t\tdisplaying.resolve();\n\n\t\t\t}.bind(this));\n\t\t// .then(function(){\n\t\t// \treturn this.hooks.display.trigger(view);\n\t\t// }.bind(this))\n\t\t// .then(function(){\n\t\t// \tthis.views.show();\n\t\t// }.bind(this));\n\t\treturn displayed;\n\t}\n\n\tafterDisplayed(view){\n\t\tthis.emit(EVENTS.MANAGERS.ADDED, view);\n\t}\n\n\tafterResized(view){\n\t\tthis.emit(EVENTS.MANAGERS.RESIZE, view.section);\n\t}\n\n\tmoveTo(offset, width){\n\t\tvar distX = 0,\n\t\t\t\tdistY = 0;\n\n\t\tif(!this.isPaginated) {\n\t\t\tdistY = offset.top;\n\t\t} else {\n\t\t\tdistX = Math.floor(offset.left / this.layout.delta) * this.layout.delta;\n\n\t\t\tif (distX + this.layout.delta > this.container.scrollWidth) {\n\t\t\t\tdistX = this.container.scrollWidth - this.layout.delta;\n\t\t\t}\n\n\t\t\tdistY = Math.floor(offset.top / this.layout.delta) * this.layout.delta;\n\n\t\t\tif (distY + this.layout.delta > this.container.scrollHeight) {\n\t\t\t\tdistY = this.container.scrollHeight - this.layout.delta;\n\t\t\t}\n\t\t}\n\t\tif(this.settings.direction === 'rtl'){\n\t\t\t/***\n\t\t\t\tthe `floor` function above (L343) is on positive values, so we should add one `layout.delta`\n\t\t\t\tto distX or use `Math.ceil` function, or multiply offset.left by -1\n\t\t\t\tbefore `Math.floor`\n\t\t\t*/\n\t\t\tdistX = distX + this.layout.delta\n\t\t\tdistX = distX - width\n\t\t}\n\t\tthis.scrollTo(distX, distY, true);\n\t}\n\n\tadd(section, forceRight){\n\t\tvar view = this.createView(section, forceRight);\n\n\t\tthis.views.append(view);\n\n\t\t// view.on(EVENTS.VIEWS.SHOWN, this.afterDisplayed.bind(this));\n\t\tview.onDisplayed = this.afterDisplayed.bind(this);\n\t\tview.onResize = this.afterResized.bind(this);\n\n\t\tview.on(EVENTS.VIEWS.AXIS, (axis) => {\n\t\t\tthis.updateAxis(axis);\n\t\t});\n\n\t\tview.on(EVENTS.VIEWS.WRITING_MODE, (mode) => {\n\t\t\tthis.updateWritingMode(mode);\n\t\t});\n\n\t\treturn view.display(this.request);\n\t}\n\n\tappend(section, forceRight){\n\t\tvar view = this.createView(section, forceRight);\n\t\tthis.views.append(view);\n\n\t\tview.onDisplayed = this.afterDisplayed.bind(this);\n\t\tview.onResize = this.afterResized.bind(this);\n\n\t\tview.on(EVENTS.VIEWS.AXIS, (axis) => {\n\t\t\tthis.updateAxis(axis);\n\t\t});\n\n\t\tview.on(EVENTS.VIEWS.WRITING_MODE, (mode) => {\n\t\t\tthis.updateWritingMode(mode);\n\t\t});\n\n\t\treturn view.display(this.request);\n\t}\n\n\tprepend(section, forceRight){\n\t\tvar view = this.createView(section, forceRight);\n\n\t\tview.on(EVENTS.VIEWS.RESIZED, (bounds) => {\n\t\t\tthis.counter(bounds);\n\t\t});\n\n\t\tthis.views.prepend(view);\n\n\t\tview.onDisplayed = this.afterDisplayed.bind(this);\n\t\tview.onResize = this.afterResized.bind(this);\n\n\t\tview.on(EVENTS.VIEWS.AXIS, (axis) => {\n\t\t\tthis.updateAxis(axis);\n\t\t});\n\n\t\tview.on(EVENTS.VIEWS.WRITING_MODE, (mode) => {\n\t\t\tthis.updateWritingMode(mode);\n\t\t});\n\n\t\treturn view.display(this.request);\n\t}\n\n\tcounter(bounds){\n\t\tif(this.settings.axis === \"vertical\") {\n\t\t\tthis.scrollBy(0, bounds.heightDelta, true);\n\t\t} else {\n\t\t\tthis.scrollBy(bounds.widthDelta, 0, true);\n\t\t}\n\n\t}\n\n\t// resizeView(view) {\n\t//\n\t// \tif(this.settings.globalLayoutProperties.layout === \"pre-paginated\") {\n\t// \t\tview.lock(\"both\", this.bounds.width, this.bounds.height);\n\t// \t} else {\n\t// \t\tview.lock(\"width\", this.bounds.width, this.bounds.height);\n\t// \t}\n\t//\n\t// };\n\n\tnext(){\n\t\tvar next;\n\t\tvar left;\n\n\t\tlet dir = this.settings.direction;\n\n\t\tif(!this.views.length) return;\n\n\t\tif(this.isPaginated && this.settings.axis === \"horizontal\" && (!dir || dir === \"ltr\")) {\n\n\t\t\tthis.scrollLeft = this.container.scrollLeft;\n\n\t\t\tleft = this.container.scrollLeft + this.container.offsetWidth + this.layout.delta;\n\n\t\t\tif(left <= this.container.scrollWidth) {\n\t\t\t\tthis.scrollBy(this.layout.delta, 0, true);\n\t\t\t} else {\n\t\t\t\tnext = this.views.last().section.next();\n\t\t\t}\n\t\t} else if (this.isPaginated && this.settings.axis === \"horizontal\" && dir === \"rtl\") {\n\n\t\t\tthis.scrollLeft = this.container.scrollLeft;\n\n\t\t\tif (this.settings.rtlScrollType === \"default\"){\n\t\t\t\tleft = this.container.scrollLeft;\n\n\t\t\t\tif (left > 0) {\n\t\t\t\t\tthis.scrollBy(this.layout.delta, 0, true);\n\t\t\t\t} else {\n\t\t\t\t\tnext = this.views.last().section.next();\n\t\t\t\t}\n\t\t\t} else {\n\t\t\t\tleft = this.container.scrollLeft + ( this.layout.delta * -1 );\n\n\t\t\t\tif (left > this.container.scrollWidth * -1){\n\t\t\t\t\tthis.scrollBy(this.layout.delta, 0, true);\n\t\t\t\t} else {\n\t\t\t\t\tnext = this.views.last().section.next();\n\t\t\t\t}\n\t\t\t}\n\n\t\t} else if (this.isPaginated && this.settings.axis === \"vertical\") {\n\n\t\t\tthis.scrollTop = this.container.scrollTop;\n\n\t\t\tlet top  = this.container.scrollTop + this.container.offsetHeight;\n\n\t\t\tif(top < this.container.scrollHeight) {\n\t\t\t\tthis.scrollBy(0, this.layout.height, true);\n\t\t\t} else {\n\t\t\t\tnext = this.views.last().section.next();\n\t\t\t}\n\n\t\t} else {\n\t\t\tnext = this.views.last().section.next();\n\t\t}\n\n\t\tif(next) {\n\t\t\tthis.clear();\n\t\t\t// The new section may have a different writing-mode from the old section. Thus, we need to update layout.\n\t\t\tthis.updateLayout();\n\n\t\t\tlet forceRight = false;\n\t\t\tif (this.layout.name === \"pre-paginated\" && this.layout.divisor === 2 && next.properties.includes(\"page-spread-right\")) {\n\t\t\t\tforceRight = true;\n\t\t\t}\n\n\t\t\treturn this.append(next, forceRight)\n\t\t\t\t.then(function(){\n\t\t\t\t\treturn this.handleNextPrePaginated(forceRight, next, this.append);\n\t\t\t\t}.bind(this), (err) => {\n\t\t\t\t\treturn err;\n\t\t\t\t})\n\t\t\t\t.then(function(){\n\n\t\t\t\t\t// Reset position to start for scrolled-doc vertical-rl in default mode\n\t\t\t\t\tif (!this.isPaginated &&\n\t\t\t\t\t\tthis.settings.axis === \"horizontal\" &&\n\t\t\t\t\t\tthis.settings.direction === \"rtl\" &&\n\t\t\t\t\t\tthis.settings.rtlScrollType === \"default\") {\n\t\t\t\t\t\t\n\t\t\t\t\t\tthis.scrollTo(this.container.scrollWidth, 0, true);\n\t\t\t\t\t}\n\t\t\t\t\tthis.views.show();\n\t\t\t\t}.bind(this));\n\t\t}\n\n\n\t}\n\n\tprev(){\n\t\tvar prev;\n\t\tvar left;\n\t\tlet dir = this.settings.direction;\n\n\t\tif(!this.views.length) return;\n\n\t\tif(this.isPaginated && this.settings.axis === \"horizontal\" && (!dir || dir === \"ltr\")) {\n\n\t\t\tthis.scrollLeft = this.container.scrollLeft;\n\n\t\t\tleft = this.container.scrollLeft;\n\n\t\t\tif(left > 0) {\n\t\t\t\tthis.scrollBy(-this.layout.delta, 0, true);\n\t\t\t} else {\n\t\t\t\tprev = this.views.first().section.prev();\n\t\t\t}\n\n\t\t} else if (this.isPaginated && this.settings.axis === \"horizontal\" && dir === \"rtl\") {\n\n\t\t\tthis.scrollLeft = this.container.scrollLeft;\n\n\t\t\tif (this.settings.rtlScrollType === \"default\"){\n\t\t\t\tleft = this.container.scrollLeft + this.container.offsetWidth;\n\n\t\t\t\tif (left < this.container.scrollWidth) {\n\t\t\t\t\tthis.scrollBy(-this.layout.delta, 0, true);\n\t\t\t\t} else {\n\t\t\t\t\tprev = this.views.first().section.prev();\n\t\t\t\t}\n\t\t\t}\n\t\t\telse{\n\t\t\t\tleft = this.container.scrollLeft;\n\n\t\t\t\tif (left < 0) {\n\t\t\t\t\tthis.scrollBy(-this.layout.delta, 0, true);\n\t\t\t\t} else {\n\t\t\t\t\tprev = this.views.first().section.prev();\n\t\t\t\t}\n\t\t\t}\n\n\t\t} else if (this.isPaginated && this.settings.axis === \"vertical\") {\n\n\t\t\tthis.scrollTop = this.container.scrollTop;\n\n\t\t\tlet top = this.container.scrollTop;\n\n\t\t\tif(top > 0) {\n\t\t\t\tthis.scrollBy(0, -(this.layout.height), true);\n\t\t\t} else {\n\t\t\t\tprev = this.views.first().section.prev();\n\t\t\t}\n\n\t\t} else {\n\n\t\t\tprev = this.views.first().section.prev();\n\n\t\t}\n\n\t\tif(prev) {\n\t\t\tthis.clear();\n\t\t\t// The new section may have a different writing-mode from the old section. Thus, we need to update layout.\n\t\t\tthis.updateLayout();\n\n\t\t\tlet forceRight = false;\n\t\t\tif (this.layout.name === \"pre-paginated\" && this.layout.divisor === 2 && typeof prev.prev() !== \"object\") {\n\t\t\t\tforceRight = true;\n\t\t\t}\n\n\t\t\treturn this.prepend(prev, forceRight)\n\t\t\t\t.then(function(){\n\t\t\t\t\tvar left;\n\t\t\t\t\tif (this.layout.name === \"pre-paginated\" && this.layout.divisor > 1) {\n\t\t\t\t\t\tleft = prev.prev();\n\t\t\t\t\t\tif (left) {\n\t\t\t\t\t\t\treturn this.prepend(left);\n\t\t\t\t\t\t}\n\t\t\t\t\t}\n\t\t\t\t}.bind(this), (err) => {\n\t\t\t\t\treturn err;\n\t\t\t\t})\n\t\t\t\t.then(function(){\n\t\t\t\t\tif(this.isPaginated && this.settings.axis === \"horizontal\") {\n\t\t\t\t\t\tif (this.settings.direction === \"rtl\") {\n\t\t\t\t\t\t\tif (this.settings.rtlScrollType === \"default\"){\n\t\t\t\t\t\t\t\tthis.scrollTo(0, 0, true);\n\t\t\t\t\t\t\t}\n\t\t\t\t\t\t\telse{\n\t\t\t\t\t\t\t\tthis.scrollTo((this.container.scrollWidth * -1) + this.layout.delta, 0, true);\n\t\t\t\t\t\t\t}\n\t\t\t\t\t\t} else {\n\t\t\t\t\t\t\tthis.scrollTo(this.container.scrollWidth - this.layout.delta, 0, true);\n\t\t\t\t\t\t}\n\t\t\t\t\t}\n\t\t\t\t\tthis.views.show();\n\t\t\t\t}.bind(this));\n\t\t}\n\t}\n\n\tcurrent(){\n\t\tvar visible = this.visible();\n\t\tif(visible.length){\n\t\t\t// Current is the last visible view\n\t\t\treturn visible[visible.length-1];\n\t\t}\n\t\treturn null;\n\t}\n\n\tclear () {\n\n\t\t// this.q.clear();\n\n\t\tif (this.views) {\n\t\t\tthis.views.hide();\n\t\t\tthis.scrollTo(0,0, true);\n\t\t\tthis.views.clear();\n\t\t}\n\t}\n\n\tcurrentLocation(){\n\t\tthis.updateLayout();\n\t\tif (this.isPaginated && this.settings.axis === \"horizontal\") {\n\t\t\tthis.location = this.paginatedLocation();\n\t\t} else {\n\t\t\tthis.location = this.scrolledLocation();\n\t\t}\n\t\treturn this.location;\n\t}\n\n\tscrolledLocation() {\n\t\tlet visible = this.visible();\n\t\tlet container = this.container.getBoundingClientRect();\n\t\tlet pageHeight = (container.height < window.innerHeight) ? container.height : window.innerHeight;\n\t\tlet pageWidth = (container.width < window.innerWidth) ? container.width : window.innerWidth;\n\t\tlet vertical = (this.settings.axis === \"vertical\");\n\t\tlet rtl =  (this.settings.direction === \"rtl\");\n\t\t\n\t\tlet offset = 0;\n\t\tlet used = 0;\n\n\t\tif(this.settings.fullsize) {\n\t\t\toffset = vertical ? window.scrollY : window.scrollX;\n\t\t}\n\n\t\tlet sections = visible.map((view) => {\n\t\t\tlet {index, href} = view.section;\n\t\t\tlet position = view.position();\n\t\t\tlet width = view.width();\n\t\t\tlet height = view.height();\n\n\t\t\tlet startPos;\n\t\t\tlet endPos;\n\t\t\tlet stopPos;\n\t\t\tlet totalPages;\n\n\t\t\tif (vertical) {\n\t\t\t\tstartPos = offset + container.top - position.top + used;\n\t\t\t\tendPos = startPos + pageHeight - used;\n\t\t\t\ttotalPages = this.layout.count(height, pageHeight).pages;\n\t\t\t\tstopPos = pageHeight;\n\t\t\t} else {\n\t\t\t\tstartPos = offset + container.left - position.left + used;\n\t\t\t\tendPos = startPos + pageWidth - used;\n\t\t\t\ttotalPages = this.layout.count(width, pageWidth).pages;\n\t\t\t\tstopPos = pageWidth;\n\t\t\t}\n\n\t\t\tlet currPage = Math.ceil(startPos / stopPos);\n\t\t\tlet pages = [];\n\t\t\tlet endPage = Math.ceil(endPos / stopPos);\n\n\t\t\t// Reverse page counts for horizontal rtl\n\t\t\tif (this.settings.direction === \"rtl\" && !vertical) {\n\t\t\t\tlet tempStartPage = currPage;\n\t\t\t\tcurrPage = totalPages - endPage;\n\t\t\t\tendPage = totalPages - tempStartPage;\n\t\t\t}\n\n\t\t\tpages = [];\n\t\t\tfor (var i = currPage; i <= endPage; i++) {\n\t\t\t\tlet pg = i + 1;\n\t\t\t\tpages.push(pg);\n\t\t\t}\n\n\t\t\tlet mapping = this.mapping.page(view.contents, view.section.cfiBase, startPos, endPos);\n\n\t\t\treturn {\n\t\t\t\tindex,\n\t\t\t\thref,\n\t\t\t\tpages,\n\t\t\t\ttotalPages,\n\t\t\t\tmapping\n\t\t\t};\n\t\t});\n\n\t\treturn sections;\n\t}\n\n\tpaginatedLocation(){\n\t\tlet visible = this.visible();\n\t\tlet container = this.container.getBoundingClientRect();\n\n\t\tlet left = 0;\n\t\tlet used = 0;\n\n\t\tif(this.settings.fullsize) {\n\t\t\tleft = window.scrollX;\n\t\t}\n\n\t\tlet sections = visible.map((view) => {\n\t\t\tlet {index, href} = view.section;\n\t\t\tlet offset;\n\t\t\tlet position = view.position();\n\t\t\tlet width = view.width();\n\n\t\t\t// Find mapping\n\t\t\tlet start;\n\t\t\tlet end;\n\t\t\tlet pageWidth;\n\n\t\t\tif (this.settings.direction === \"rtl\") {\n\t\t\t\toffset = container.right - left;\n\t\t\t\tpageWidth = Math.min(Math.abs(offset - position.left), this.layout.width) - used;\n\t\t\t\tend = position.width - (position.right - offset) - used;\n\t\t\t\tstart = end - pageWidth;\n\t\t\t} else {\n\t\t\t\toffset = container.left + left;\n\t\t\t\tpageWidth = Math.min(position.right - offset, this.layout.width) - used;\n\t\t\t\tstart = offset - position.left + used;\n\t\t\t\tend = start + pageWidth;\n\t\t\t}\n\n\t\t\tused += pageWidth;\n\n\t\t\tlet mapping = this.mapping.page(view.contents, view.section.cfiBase, start, end);\n\n\t\t\tlet totalPages = this.layout.count(width).pages;\n\t\t\tlet startPage = Math.floor(start / this.layout.pageWidth);\n\t\t\tlet pages = [];\n\t\t\tlet endPage = Math.floor(end / this.layout.pageWidth);\n\t\t\t\n\t\t\t// start page should not be negative\n\t\t\tif (startPage < 0) {\n\t\t\t\tstartPage = 0;\n\t\t\t\tendPage = endPage + 1;\n\t\t\t}\n\n\t\t\t// Reverse page counts for rtl\n\t\t\tif (this.settings.direction === \"rtl\") {\n\t\t\t\tlet tempStartPage = startPage;\n\t\t\t\tstartPage = totalPages - endPage;\n\t\t\t\tendPage = totalPages - tempStartPage;\n\t\t\t}\n\n\n\t\t\tfor (var i = startPage + 1; i <= endPage; i++) {\n\t\t\t\tlet pg = i;\n\t\t\t\tpages.push(pg);\n\t\t\t}\n\n\t\t\treturn {\n\t\t\t\tindex,\n\t\t\t\thref,\n\t\t\t\tpages,\n\t\t\t\ttotalPages,\n\t\t\t\tmapping\n\t\t\t};\n\t\t});\n\n\t\treturn sections;\n\t}\n\n\tisVisible(view, offsetPrev, offsetNext, _container){\n\t\tvar position = view.position();\n\t\tvar container = _container || this.bounds();\n\n\t\tif(this.settings.axis === \"horizontal\" &&\n\t\t\tposition.right > container.left - offsetPrev &&\n\t\t\tposition.left < container.right + offsetNext) {\n\n\t\t\treturn true;\n\n\t\t} else if(this.settings.axis === \"vertical\" &&\n\t\t\tposition.bottom > container.top - offsetPrev &&\n\t\t\tposition.top < container.bottom + offsetNext) {\n\n\t\t\treturn true;\n\t\t}\n\n\t\treturn false;\n\n\t}\n\n\tvisible(){\n\t\tvar container = this.bounds();\n\t\tvar views = this.views.displayed();\n\t\tvar viewsLength = views.length;\n\t\tvar visible = [];\n\t\tvar isVisible;\n\t\tvar view;\n\n\t\tfor (var i = 0; i < viewsLength; i++) {\n\t\t\tview = views[i];\n\t\t\tisVisible = this.isVisible(view, 0, 0, container);\n\n\t\t\tif(isVisible === true) {\n\t\t\t\tvisible.push(view);\n\t\t\t}\n\n\t\t}\n\t\treturn visible;\n\t}\n\n\tscrollBy(x, y, silent){\n\t\tlet dir = this.settings.direction === \"rtl\" ? -1 : 1;\n\n\t\tif(silent) {\n\t\t\tthis.ignore = true;\n\t\t}\n\n\t\tif(!this.settings.fullsize) {\n\t\t\tif(x) this.container.scrollLeft += x * dir;\n\t\t\tif(y) this.container.scrollTop += y;\n\t\t} else {\n\t\t\twindow.scrollBy(x * dir, y * dir);\n\t\t}\n\t\tthis.scrolled = true;\n\t}\n\n\tscrollTo(x, y, silent){\n\t\tif(silent) {\n\t\t\tthis.ignore = true;\n\t\t}\n\n\t\tif(!this.settings.fullsize) {\n\t\t\tthis.container.scrollLeft = x;\n\t\t\tthis.container.scrollTop = y;\n\t\t} else {\n\t\t\twindow.scrollTo(x,y);\n\t\t}\n\t\tthis.scrolled = true;\n\t}\n\n\tonScroll(){\n\t\tlet scrollTop;\n\t\tlet scrollLeft;\n\n\t\tif(!this.settings.fullsize) {\n\t\t\tscrollTop = this.container.scrollTop;\n\t\t\tscrollLeft = this.container.scrollLeft;\n\t\t} else {\n\t\t\tscrollTop = window.scrollY;\n\t\t\tscrollLeft = window.scrollX;\n\t\t}\n\n\t\tthis.scrollTop = scrollTop;\n\t\tthis.scrollLeft = scrollLeft;\n\n\t\tif(!this.ignore) {\n\t\t\tthis.emit(EVENTS.MANAGERS.SCROLL, {\n\t\t\t\ttop: scrollTop,\n\t\t\t\tleft: scrollLeft\n\t\t\t});\n\n\t\t\tclearTimeout(this.afterScrolled);\n\t\t\tthis.afterScrolled = setTimeout(function () {\n\t\t\t\tthis.emit(EVENTS.MANAGERS.SCROLLED, {\n\t\t\t\t\ttop: this.scrollTop,\n\t\t\t\t\tleft: this.scrollLeft\n\t\t\t\t});\n\t\t\t}.bind(this), 20);\n\n\n\n\t\t} else {\n\t\t\tthis.ignore = false;\n\t\t}\n\n\t}\n\n\tbounds() {\n\t\tvar bounds;\n\n\t\tbounds = this.stage.bounds();\n\n\t\treturn bounds;\n\t}\n\n\tapplyLayout(layout) {\n\n\t\tthis.layout = layout;\n\t\tthis.updateLayout();\n\t\tif (this.views && this.views.length > 0 && this.layout.name === \"pre-paginated\") {\n\t\t\tthis.display(this.views.first().section);\n\t\t}\n\t\t // this.manager.layout(this.layout.format);\n\t}\n\n\tupdateLayout() {\n\n\t\tif (!this.stage) {\n\t\t\treturn;\n\t\t}\n\n\t\tthis._stageSize = this.stage.size();\n\n\t\tif(!this.isPaginated) {\n\t\t\tthis.layout.calculate(this._stageSize.width, this._stageSize.height);\n\t\t} else {\n\t\t\tthis.layout.calculate(\n\t\t\t\tthis._stageSize.width,\n\t\t\t\tthis._stageSize.height,\n\t\t\t\tthis.settings.gap\n\t\t\t);\n\n\t\t\t// Set the look ahead offset for what is visible\n\t\t\tthis.settings.offset = this.layout.delta / this.layout.divisor;\n\n\t\t\t// this.stage.addStyleRules(\"iframe\", [{\"margin-right\" : this.layout.gap + \"px\"}]);\n\n\t\t}\n\n\t\t// Set the dimensions for views\n\t\tthis.viewSettings.width = this.layout.width;\n\t\tthis.viewSettings.height = this.layout.height;\n\n\t\tthis.setLayout(this.layout);\n\t}\n\n\tsetLayout(layout){\n\n\t\tthis.viewSettings.layout = layout;\n\n\t\tthis.mapping = new Mapping(layout.props, this.settings.direction, this.settings.axis);\n\n\t\tif(this.views) {\n\n\t\t\tthis.views.forEach(function(view){\n\t\t\t\tif (view) {\n\t\t\t\t\tview.setLayout(layout);\n\t\t\t\t}\n\t\t\t});\n\n\t\t}\n\n\t}\n\n\tupdateWritingMode(mode) {\n\t\tthis.writingMode = mode;\n\t}\n\n\tupdateAxis(axis, forceUpdate){\n\n\t\tif (!forceUpdate && axis === this.settings.axis) {\n\t\t\treturn;\n\t\t}\n\n\t\tthis.settings.axis = axis;\n\n\t\tthis.stage && this.stage.axis(axis);\n\n\t\tthis.viewSettings.axis = axis;\n\n\t\tif (this.mapping) {\n\t\t\tthis.mapping = new Mapping(this.layout.props, this.settings.direction, this.settings.axis);\n\t\t}\n\n\t\tif (this.layout) {\n\t\t\tif (axis === \"vertical\") {\n\t\t\t\tthis.layout.spread(\"none\");\n\t\t\t} else {\n\t\t\t\tthis.layout.spread(this.layout.settings.spread);\n\t\t\t}\n\t\t}\n\t}\n\n\tupdateFlow(flow, defaultScrolledOverflow=\"auto\"){\n\t\tlet isPaginated = (flow === \"paginated\" || flow === \"auto\");\n\n\t\tthis.isPaginated = isPaginated;\n\n\t\tif (flow === \"scrolled-doc\" ||\n\t\t\t\tflow === \"scrolled-continuous\" ||\n\t\t\t\tflow === \"scrolled\") {\n\t\t\tthis.updateAxis(\"vertical\");\n\t\t} else {\n\t\t\tthis.updateAxis(\"horizontal\");\n\t\t}\n\n\t\tthis.viewSettings.flow = flow;\n\n\t\tif (!this.settings.overflow) {\n\t\t\tthis.overflow = isPaginated ? \"hidden\" : defaultScrolledOverflow;\n\t\t} else {\n\t\t\tthis.overflow = this.settings.overflow;\n\t\t}\n\n\t\tthis.stage && this.stage.overflow(this.overflow);\n\n\t\tthis.updateLayout();\n\n\t}\n\n\tgetContents(){\n\t\tvar contents = [];\n\t\tif (!this.views) {\n\t\t\treturn contents;\n\t\t}\n\t\tthis.views.forEach(function(view){\n\t\t\tconst viewContents = view && view.contents;\n\t\t\tif (viewContents) {\n\t\t\t\tcontents.push(viewContents);\n\t\t\t}\n\t\t});\n\t\treturn contents;\n\t}\n\n\tdirection(dir=\"ltr\") {\n\t\tthis.settings.direction = dir;\n\n\t\tthis.stage && this.stage.direction(dir);\n\n\t\tthis.viewSettings.direction = dir;\n\n\t\tthis.updateLayout();\n\t}\n\n\tisRendered() {\n\t\treturn this.rendered;\n\t}\n}\n\n//-- Enable binding events to Manager\nEventEmitter(DefaultViewManager.prototype);\n\nexport default DefaultViewManager;\n","\"use strict\";\n\n// eslint-disable-next-line no-empty-function\nmodule.exports = function () {};\n","\"use strict\";\n\nmodule.exports = function () {\n\ttry {\n\t\tObject.keys(\"primitive\");\n\t\treturn true;\n\t} catch (e) {\n\t\treturn false;\n\t}\n};\n","\"use strict\";\n\nvar isValue = require(\"./is-value\");\n\nvar forEach = Array.prototype.forEach, create = Object.create;\n\nvar process = function (src, obj) {\n\tvar key;\n\tfor (key in src) obj[key] = src[key];\n};\n\n// eslint-disable-next-line no-unused-vars\nmodule.exports = function (opts1 /*, …options*/) {\n\tvar result = create(null);\n\tforEach.call(arguments, function (options) {\n\t\tif (!isValue(options)) return;\n\t\tprocess(Object(options), result);\n\t});\n\treturn result;\n};\n","\"use strict\";\n\nvar isValue         = require(\"type/value/is\")\n  , isPlainFunction = require(\"type/plain-function/is\")\n  , assign          = require(\"es5-ext/object/assign\")\n  , normalizeOpts   = require(\"es5-ext/object/normalize-options\")\n  , contains        = require(\"es5-ext/string/#/contains\");\n\nvar d = (module.exports = function (dscr, value/*, options*/) {\n\tvar c, e, w, options, desc;\n\tif (arguments.length < 2 || typeof dscr !== \"string\") {\n\t\toptions = value;\n\t\tvalue = dscr;\n\t\tdscr = null;\n\t} else {\n\t\toptions = arguments[2];\n\t}\n\tif (isValue(dscr)) {\n\t\tc = contains.call(dscr, \"c\");\n\t\te = contains.call(dscr, \"e\");\n\t\tw = contains.call(dscr, \"w\");\n\t} else {\n\t\tc = w = true;\n\t\te = false;\n\t}\n\n\tdesc = { value: value, configurable: c, enumerable: e, writable: w };\n\treturn !options ? desc : assign(normalizeOpts(options), desc);\n});\n\nd.gs = function (dscr, get, set/*, options*/) {\n\tvar c, e, options, desc;\n\tif (typeof dscr !== \"string\") {\n\t\toptions = set;\n\t\tset = get;\n\t\tget = dscr;\n\t\tdscr = null;\n\t} else {\n\t\toptions = arguments[3];\n\t}\n\tif (!isValue(get)) {\n\t\tget = undefined;\n\t} else if (!isPlainFunction(get)) {\n\t\toptions = get;\n\t\tget = set = undefined;\n\t} else if (!isValue(set)) {\n\t\tset = undefined;\n\t} else if (!isPlainFunction(set)) {\n\t\toptions = set;\n\t\tset = undefined;\n\t}\n\tif (isValue(dscr)) {\n\t\tc = contains.call(dscr, \"c\");\n\t\te = contains.call(dscr, \"e\");\n\t} else {\n\t\tc = true;\n\t\te = false;\n\t}\n\n\tdesc = { get: get, set: set, configurable: c, enumerable: e };\n\treturn !options ? desc : assign(normalizeOpts(options), desc);\n};\n","\"use strict\";\n\nvar keys  = require(\"../keys\")\n  , value = require(\"../valid-value\")\n  , max   = Math.max;\n\nmodule.exports = function (dest, src /*, …srcn*/) {\n\tvar error, i, length = max(arguments.length, 2), assign;\n\tdest = Object(value(dest));\n\tassign = function (key) {\n\t\ttry {\n\t\t\tdest[key] = src[key];\n\t\t} catch (e) {\n\t\t\tif (!error) error = e;\n\t\t}\n\t};\n\tfor (i = 1; i < length; ++i) {\n\t\tsrc = arguments[i];\n\t\tkeys(src).forEach(assign);\n\t}\n\tif (error !== undefined) throw error;\n\treturn dest;\n};\n","\"use strict\";\n\nvar indexOf = String.prototype.indexOf;\n\nmodule.exports = function (searchString /*, position*/) {\n\treturn indexOf.call(this, searchString, arguments[1]) > -1;\n};\n","\"use strict\";\n\nmodule.exports = require(\"./is-implemented\")() ? String.prototype.contains : require(\"./shim\");\n","'use strict';\n// iterable DOM collections\n// flag - `iterable` interface - 'entries', 'keys', 'values', 'forEach' methods\nmodule.exports = {\n  CSSRuleList: 0,\n  CSSStyleDeclaration: 0,\n  CSSValueList: 0,\n  ClientRectList: 0,\n  DOMRectList: 0,\n  DOMStringList: 0,\n  DOMTokenList: 1,\n  DataTransferItemList: 0,\n  FileList: 0,\n  HTMLAllCollection: 0,\n  HTMLCollection: 0,\n  HTMLFormElement: 0,\n  HTMLSelectElement: 0,\n  MediaList: 0,\n  MimeTypeArray: 0,\n  NamedNodeMap: 0,\n  NodeList: 1,\n  PaintRequestList: 0,\n  Plugin: 0,\n  PluginArray: 0,\n  SVGLengthList: 0,\n  SVGNumberList: 0,\n  SVGPathSegList: 0,\n  SVGPointList: 0,\n  SVGStringList: 0,\n  SVGTransformList: 0,\n  SourceBufferList: 0,\n  StyleSheetList: 0,\n  TextTrackCueList: 0,\n  TextTrackList: 0,\n  TouchList: 0\n};\n","var baseGetTag = require('./_baseGetTag'),\n    isObjectLike = require('./isObjectLike');\n\n/** `Object#toString` result references. */\nvar symbolTag = '[object Symbol]';\n\n/**\n * Checks if `value` is classified as a `Symbol` primitive or object.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Lang\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is a symbol, else `false`.\n * @example\n *\n * _.isSymbol(Symbol.iterator);\n * // => true\n *\n * _.isSymbol('abc');\n * // => false\n */\nfunction isSymbol(value) {\n  return typeof value == 'symbol' ||\n    (isObjectLike(value) && baseGetTag(value) == symbolTag);\n}\n\nmodule.exports = isSymbol;\n"],"sourceRoot":""}