';\n * }\n * });\n * ```\n *\n **/\nfunction MarkdownIt(presetName, options) {\n if (!(this instanceof MarkdownIt)) {\n return new MarkdownIt(presetName, options);\n }\n\n if (!options) {\n if (!utils.isString(presetName)) {\n options = presetName || {};\n presetName = 'default';\n }\n }\n\n /**\n * MarkdownIt#inline -> ParserInline\n *\n * Instance of [[ParserInline]]. You may need it to add new rules when\n * writing plugins. For simple rules control use [[MarkdownIt.disable]] and\n * [[MarkdownIt.enable]].\n **/\n this.inline = new ParserInline();\n\n /**\n * MarkdownIt#block -> ParserBlock\n *\n * Instance of [[ParserBlock]]. You may need it to add new rules when\n * writing plugins. For simple rules control use [[MarkdownIt.disable]] and\n * [[MarkdownIt.enable]].\n **/\n this.block = new ParserBlock();\n\n /**\n * MarkdownIt#core -> Core\n *\n * Instance of [[Core]] chain executor. You may need it to add new rules when\n * writing plugins. For simple rules control use [[MarkdownIt.disable]] and\n * [[MarkdownIt.enable]].\n **/\n this.core = new ParserCore();\n\n /**\n * MarkdownIt#renderer -> Renderer\n *\n * Instance of [[Renderer]]. Use it to modify output look. Or to add rendering\n * rules for new token types, generated by plugins.\n *\n * ##### Example\n *\n * ```javascript\n * var md = require('markdown-it')();\n *\n * function myToken(tokens, idx, options, env, self) {\n * //...\n * return result;\n * };\n *\n * md.renderer.rules['my_token'] = myToken\n * ```\n *\n * See [[Renderer]] docs and [source code](https://github.com/markdown-it/markdown-it/blob/master/lib/renderer.js).\n **/\n this.renderer = new Renderer();\n\n /**\n * MarkdownIt#linkify -> LinkifyIt\n *\n * [linkify-it](https://github.com/markdown-it/linkify-it) instance.\n * Used by [linkify](https://github.com/markdown-it/markdown-it/blob/master/lib/rules_core/linkify.js)\n * rule.\n **/\n this.linkify = new LinkifyIt();\n\n /**\n * MarkdownIt#validateLink(url) -> Boolean\n *\n * Link validation function. CommonMark allows too much in links. By default\n * we disable `javascript:`, `vbscript:`, `file:` schemas, and almost all `data:...` schemas\n * except some embedded image types.\n *\n * You can change this behaviour:\n *\n * ```javascript\n * var md = require('markdown-it')();\n * // enable everything\n * md.validateLink = function () { return true; }\n * ```\n **/\n this.validateLink = validateLink;\n\n /**\n * MarkdownIt#normalizeLink(url) -> String\n *\n * Function used to encode link url to a machine-readable format,\n * which includes url-encoding, punycode, etc.\n **/\n this.normalizeLink = normalizeLink;\n\n /**\n * MarkdownIt#normalizeLinkText(url) -> String\n *\n * Function used to decode link url to a human-readable format`\n **/\n this.normalizeLinkText = normalizeLinkText;\n\n\n // Expose utils & helpers for easy acces from plugins\n\n /**\n * MarkdownIt#utils -> utils\n *\n * Assorted utility functions, useful to write plugins. See details\n * [here](https://github.com/markdown-it/markdown-it/blob/master/lib/common/utils.js).\n **/\n this.utils = utils;\n\n /**\n * MarkdownIt#helpers -> helpers\n *\n * Link components parser functions, useful to write plugins. See details\n * [here](https://github.com/markdown-it/markdown-it/blob/master/lib/helpers).\n **/\n this.helpers = helpers;\n\n\n this.options = {};\n this.configure(presetName);\n\n if (options) { this.set(options); }\n}\n\n\n/** chainable\n * MarkdownIt.set(options)\n *\n * Set parser options (in the same format as in constructor). Probably, you\n * will never need it, but you can change options after constructor call.\n *\n * ##### Example\n *\n * ```javascript\n * var md = require('markdown-it')()\n * .set({ html: true, breaks: true })\n * .set({ typographer, true });\n * ```\n *\n * __Note:__ To achieve the best possible performance, don't modify a\n * `markdown-it` instance options on the fly. If you need multiple configurations\n * it's best to create multiple instances and initialize each with separate\n * config.\n **/\nMarkdownIt.prototype.set = function (options) {\n utils.assign(this.options, options);\n return this;\n};\n\n\n/** chainable, internal\n * MarkdownIt.configure(presets)\n *\n * Batch load of all options and compenent settings. This is internal method,\n * and you probably will not need it. But if you with - see available presets\n * and data structure [here](https://github.com/markdown-it/markdown-it/tree/master/lib/presets)\n *\n * We strongly recommend to use presets instead of direct config loads. That\n * will give better compatibility with next versions.\n **/\nMarkdownIt.prototype.configure = function (presets) {\n var self = this, presetName;\n\n if (utils.isString(presets)) {\n presetName = presets;\n presets = config[presetName];\n if (!presets) { throw new Error('Wrong `markdown-it` preset \"' + presetName + '\", check name'); }\n }\n\n if (!presets) { throw new Error('Wrong `markdown-it` preset, can\\'t be empty'); }\n\n if (presets.options) { self.set(presets.options); }\n\n if (presets.components) {\n Object.keys(presets.components).forEach(function (name) {\n if (presets.components[name].rules) {\n self[name].ruler.enableOnly(presets.components[name].rules);\n }\n if (presets.components[name].rules2) {\n self[name].ruler2.enableOnly(presets.components[name].rules2);\n }\n });\n }\n return this;\n};\n\n\n/** chainable\n * MarkdownIt.enable(list, ignoreInvalid)\n * - list (String|Array): rule name or list of rule names to enable\n * - ignoreInvalid (Boolean): set `true` to ignore errors when rule not found.\n *\n * Enable list or rules. It will automatically find appropriate components,\n * containing rules with given names. If rule not found, and `ignoreInvalid`\n * not set - throws exception.\n *\n * ##### Example\n *\n * ```javascript\n * var md = require('markdown-it')()\n * .enable(['sub', 'sup'])\n * .disable('smartquotes');\n * ```\n **/\nMarkdownIt.prototype.enable = function (list, ignoreInvalid) {\n var result = [];\n\n if (!Array.isArray(list)) { list = [ list ]; }\n\n [ 'core', 'block', 'inline' ].forEach(function (chain) {\n result = result.concat(this[chain].ruler.enable(list, true));\n }, this);\n\n result = result.concat(this.inline.ruler2.enable(list, true));\n\n var missed = list.filter(function (name) { return result.indexOf(name) < 0; });\n\n if (missed.length && !ignoreInvalid) {\n throw new Error('MarkdownIt. Failed to enable unknown rule(s): ' + missed);\n }\n\n return this;\n};\n\n\n/** chainable\n * MarkdownIt.disable(list, ignoreInvalid)\n * - list (String|Array): rule name or list of rule names to disable.\n * - ignoreInvalid (Boolean): set `true` to ignore errors when rule not found.\n *\n * The same as [[MarkdownIt.enable]], but turn specified rules off.\n **/\nMarkdownIt.prototype.disable = function (list, ignoreInvalid) {\n var result = [];\n\n if (!Array.isArray(list)) { list = [ list ]; }\n\n [ 'core', 'block', 'inline' ].forEach(function (chain) {\n result = result.concat(this[chain].ruler.disable(list, true));\n }, this);\n\n result = result.concat(this.inline.ruler2.disable(list, true));\n\n var missed = list.filter(function (name) { return result.indexOf(name) < 0; });\n\n if (missed.length && !ignoreInvalid) {\n throw new Error('MarkdownIt. Failed to disable unknown rule(s): ' + missed);\n }\n return this;\n};\n\n\n/** chainable\n * MarkdownIt.use(plugin, params)\n *\n * Load specified plugin with given params into current parser instance.\n * It's just a sugar to call `plugin(md, params)` with curring.\n *\n * ##### Example\n *\n * ```javascript\n * var iterator = require('markdown-it-for-inline');\n * var md = require('markdown-it')()\n * .use(iterator, 'foo_replace', 'text', function (tokens, idx) {\n * tokens[idx].content = tokens[idx].content.replace(/foo/g, 'bar');\n * });\n * ```\n **/\nMarkdownIt.prototype.use = function (plugin /*, params, ... */) {\n var args = [ this ].concat(Array.prototype.slice.call(arguments, 1));\n plugin.apply(plugin, args);\n return this;\n};\n\n\n/** internal\n * MarkdownIt.parse(src, env) -> Array\n * - src (String): source string\n * - env (Object): environment sandbox\n *\n * Parse input string and returns list of block tokens (special token type\n * \"inline\" will contain list of inline tokens). You should not call this\n * method directly, until you write custom renderer (for example, to produce\n * AST).\n *\n * `env` is used to pass data between \"distributed\" rules and return additional\n * metadata like reference info, needed for the renderer. It also can be used to\n * inject data in specific cases. Usually, you will be ok to pass `{}`,\n * and then pass updated object to renderer.\n **/\nMarkdownIt.prototype.parse = function (src, env) {\n var state = new this.core.State(src, this, env);\n\n this.core.process(state);\n\n return state.tokens;\n};\n\n\n/**\n * MarkdownIt.render(src [, env]) -> String\n * - src (String): source string\n * - env (Object): environment sandbox\n *\n * Render markdown string into html. It does all magic for you :).\n *\n * `env` can be used to inject additional metadata (`{}` by default).\n * But you will not need it with high probability. See also comment\n * in [[MarkdownIt.parse]].\n **/\nMarkdownIt.prototype.render = function (src, env) {\n env = env || {};\n\n return this.renderer.render(this.parse(src, env), this.options, env);\n};\n\n\n/** internal\n * MarkdownIt.parseInline(src, env) -> Array\n * - src (String): source string\n * - env (Object): environment sandbox\n *\n * The same as [[MarkdownIt.parse]] but skip all block rules. It returns the\n * block tokens list with the single `inline` element, containing parsed inline\n * tokens in `children` property. Also updates `env` object.\n **/\nMarkdownIt.prototype.parseInline = function (src, env) {\n var state = new this.core.State(src, this, env);\n\n state.inlineMode = true;\n this.core.process(state);\n\n return state.tokens;\n};\n\n\n/**\n * MarkdownIt.renderInline(src [, env]) -> String\n * - src (String): source string\n * - env (Object): environment sandbox\n *\n * Similar to [[MarkdownIt.render]] but for single paragraph content. Result\n * will NOT be wrapped into `
` tags.\n **/\nMarkdownIt.prototype.renderInline = function (src, env) {\n env = env || {};\n\n return this.renderer.render(this.parseInline(src, env), this.options, env);\n};\n\n\nmodule.exports = MarkdownIt;\n","// Token class\n\n'use strict';\n\n\n/**\n * class Token\n **/\n\n/**\n * new Token(type, tag, nesting)\n *\n * Create new token and fill passed properties.\n **/\nfunction Token(type, tag, nesting) {\n /**\n * Token#type -> String\n *\n * Type of the token (string, e.g. \"paragraph_open\")\n **/\n this.type = type;\n\n /**\n * Token#tag -> String\n *\n * html tag name, e.g. \"p\"\n **/\n this.tag = tag;\n\n /**\n * Token#attrs -> Array\n *\n * Html attributes. Format: `[ [ name1, value1 ], [ name2, value2 ] ]`\n **/\n this.attrs = null;\n\n /**\n * Token#map -> Array\n *\n * Source map info. Format: `[ line_begin, line_end ]`\n **/\n this.map = null;\n\n /**\n * Token#nesting -> Number\n *\n * Level change (number in {-1, 0, 1} set), where:\n *\n * - `1` means the tag is opening\n * - `0` means the tag is self-closing\n * - `-1` means the tag is closing\n **/\n this.nesting = nesting;\n\n /**\n * Token#level -> Number\n *\n * nesting level, the same as `state.level`\n **/\n this.level = 0;\n\n /**\n * Token#children -> Array\n *\n * An array of child nodes (inline and img tokens)\n **/\n this.children = null;\n\n /**\n * Token#content -> String\n *\n * In a case of self-closing tag (code, html, fence, etc.),\n * it has contents of this tag.\n **/\n this.content = '';\n\n /**\n * Token#markup -> String\n *\n * '*' or '_' for emphasis, fence string for fence, etc.\n **/\n this.markup = '';\n\n /**\n * Token#info -> String\n *\n * fence infostring\n **/\n this.info = '';\n\n /**\n * Token#meta -> Object\n *\n * A place for plugins to store an arbitrary data\n **/\n this.meta = null;\n\n /**\n * Token#block -> Boolean\n *\n * True for block-level tokens, false for inline tokens.\n * Used in renderer to calculate line breaks\n **/\n this.block = false;\n\n /**\n * Token#hidden -> Boolean\n *\n * If it's true, ignore this element when rendering. Used for tight lists\n * to hide paragraphs.\n **/\n this.hidden = false;\n}\n\n\n/**\n * Token.attrIndex(name) -> Number\n *\n * Search attribute index by name.\n **/\nToken.prototype.attrIndex = function attrIndex(name) {\n var attrs, i, len;\n\n if (!this.attrs) { return -1; }\n\n attrs = this.attrs;\n\n for (i = 0, len = attrs.length; i < len; i++) {\n if (attrs[i][0] === name) { return i; }\n }\n return -1;\n};\n\n\n/**\n * Token.attrPush(attrData)\n *\n * Add `[ name, value ]` attribute to list. Init attrs if necessary\n **/\nToken.prototype.attrPush = function attrPush(attrData) {\n if (this.attrs) {\n this.attrs.push(attrData);\n } else {\n this.attrs = [ attrData ];\n }\n};\n\n\n/**\n * Token.attrSet(name, value)\n *\n * Set `name` attribute to `value`. Override old value if exists.\n **/\nToken.prototype.attrSet = function attrSet(name, value) {\n var idx = this.attrIndex(name),\n attrData = [ name, value ];\n\n if (idx < 0) {\n this.attrPush(attrData);\n } else {\n this.attrs[idx] = attrData;\n }\n};\n\n\n/**\n * Token.attrGet(name)\n *\n * Get the value of attribute `name`, or null if it does not exist.\n **/\nToken.prototype.attrGet = function attrGet(name) {\n var idx = this.attrIndex(name), value = null;\n if (idx >= 0) {\n value = this.attrs[idx][1];\n }\n return value;\n};\n\n\n/**\n * Token.attrJoin(name, value)\n *\n * Join value to existing attribute via space. Or create new attribute if not\n * exists. Useful to operate with token classes.\n **/\nToken.prototype.attrJoin = function attrJoin(name, value) {\n var idx = this.attrIndex(name);\n\n if (idx < 0) {\n this.attrPush([ name, value ]);\n } else {\n this.attrs[idx][1] = this.attrs[idx][1] + ' ' + value;\n }\n};\n\n\nmodule.exports = Token;\n","// Inline parser state\n\n'use strict';\n\n\nvar Token = require('../token');\nvar isWhiteSpace = require('../common/utils').isWhiteSpace;\nvar isPunctChar = require('../common/utils').isPunctChar;\nvar isMdAsciiPunct = require('../common/utils').isMdAsciiPunct;\n\n\nfunction StateInline(src, md, env, outTokens) {\n this.src = src;\n this.env = env;\n this.md = md;\n this.tokens = outTokens;\n\n this.pos = 0;\n this.posMax = this.src.length;\n this.level = 0;\n this.pending = '';\n this.pendingLevel = 0;\n\n this.cache = {}; // Stores { start: end } pairs. Useful for backtrack\n // optimization of pairs parse (emphasis, strikes).\n\n this.delimiters = []; // Emphasis-like delimiters\n}\n\n\n// Flush pending text\n//\nStateInline.prototype.pushPending = function () {\n var token = new Token('text', '', 0);\n token.content = this.pending;\n token.level = this.pendingLevel;\n this.tokens.push(token);\n this.pending = '';\n return token;\n};\n\n\n// Push new token to \"stream\".\n// If pending text exists - flush it as text token\n//\nStateInline.prototype.push = function (type, tag, nesting) {\n if (this.pending) {\n this.pushPending();\n }\n\n var token = new Token(type, tag, nesting);\n\n if (nesting < 0) { this.level--; }\n token.level = this.level;\n if (nesting > 0) { this.level++; }\n\n this.pendingLevel = this.level;\n this.tokens.push(token);\n return token;\n};\n\n\n// Scan a sequence of emphasis-like markers, and determine whether\n// it can start an emphasis sequence or end an emphasis sequence.\n//\n// - start - position to scan from (it should point at a valid marker);\n// - canSplitWord - determine if these markers can be found inside a word\n//\nStateInline.prototype.scanDelims = function (start, canSplitWord) {\n var pos = start, lastChar, nextChar, count, can_open, can_close,\n isLastWhiteSpace, isLastPunctChar,\n isNextWhiteSpace, isNextPunctChar,\n left_flanking = true,\n right_flanking = true,\n max = this.posMax,\n marker = this.src.charCodeAt(start);\n\n // treat beginning of the line as a whitespace\n lastChar = start > 0 ? this.src.charCodeAt(start - 1) : 0x20;\n\n while (pos < max && this.src.charCodeAt(pos) === marker) { pos++; }\n\n count = pos - start;\n\n // treat end of the line as a whitespace\n nextChar = pos < max ? this.src.charCodeAt(pos) : 0x20;\n\n isLastPunctChar = isMdAsciiPunct(lastChar) || isPunctChar(String.fromCharCode(lastChar));\n isNextPunctChar = isMdAsciiPunct(nextChar) || isPunctChar(String.fromCharCode(nextChar));\n\n isLastWhiteSpace = isWhiteSpace(lastChar);\n isNextWhiteSpace = isWhiteSpace(nextChar);\n\n if (isNextWhiteSpace) {\n left_flanking = false;\n } else if (isNextPunctChar) {\n if (!(isLastWhiteSpace || isLastPunctChar)) {\n left_flanking = false;\n }\n }\n\n if (isLastWhiteSpace) {\n right_flanking = false;\n } else if (isLastPunctChar) {\n if (!(isNextWhiteSpace || isNextPunctChar)) {\n right_flanking = false;\n }\n }\n\n if (!canSplitWord) {\n can_open = left_flanking && (!right_flanking || isLastPunctChar);\n can_close = right_flanking && (!left_flanking || isNextPunctChar);\n } else {\n can_open = left_flanking;\n can_close = right_flanking;\n }\n\n return {\n can_open: can_open,\n can_close: can_close,\n length: count\n };\n};\n\n\n// re-export Token class to use in block rules\nStateInline.prototype.Token = Token;\n\n\nmodule.exports = StateInline;\n","// 7.1.13 ToObject(argument)\nvar defined = require('./_defined');\nmodule.exports = function (it) {\n return Object(defined(it));\n};\n","/*\r\n Example:\r\n import parseAddress from '@/utilities/address/parse'\r\n\r\n const parsedAddress = parseAddress ({\r\n address: {\r\n addressOne\r\n addressTwo\r\n\r\n foreignAddress\r\n\r\n // foreign address fields\r\n addressThree\r\n addressFour\r\n addressFive\r\n\r\n // USA address fields\r\n city\r\n state\r\n postalCode\r\n }\r\n })\r\n*/\r\n\r\nimport _get from 'lodash/get'\r\n\r\nexport default ({ address }) => {\r\n if (typeof address !== 'object' || address === null) {\r\n // console.error('address/parse can only parse addresses that are iterable objects, got', address)\r\n return ''\r\n }\r\n\r\n /*\r\n false -> USA Address\r\n addressOne\r\n addressTwo (if non-empty)\r\n city, state postalCode\r\n\r\n true -> foreign\r\n addressOne\r\n addressTwo\r\n addressThree\r\n addressFour (if non-empty)\r\n addressFive (if non-empty)\r\n */\r\n var isForeign = _get(address, 'foreignAddress', false)\r\n\r\n if (!isForeign) {\r\n let _address = _get(address, 'addressOne', '')\r\n\r\n if (_address && _address.length > 0) {\r\n _address += ','\r\n }\r\n\r\n const addressTwo = _get(address, 'addressTwo', null)\r\n if (typeof addressTwo === 'string' && addressTwo.length > 0) {\r\n _address += ' ' + addressTwo\r\n }\r\n\r\n const addressLine1 = _get(address, 'addressLine1', '')\r\n if (typeof addressLine1 === 'string' && addressLine1.length > 0) {\r\n _address += ' ' + addressLine1 + ','\r\n }\r\n\r\n const addressLine2 = _get(address, 'addressLine2', '')\r\n if (typeof addressLine2 === 'string' && addressLine2.length > 0) {\r\n _address += ' ' + addressLine2\r\n }\r\n\r\n const city = _get(address, 'city', null)\r\n if (typeof city === 'string') {\r\n _address += ' ' + city + ','\r\n }\r\n\r\n const state = _get(address, 'state', null)\r\n if (typeof state === 'string') {\r\n _address += ' ' + state\r\n }\r\n\r\n const postalCode = _get(address, 'postalCode', null)\r\n if (typeof postalCode === 'string') {\r\n _address += ' ' + postalCode\r\n }\r\n\r\n const zip = _get(address, 'zip', null)\r\n if (typeof zip === 'string') {\r\n _address += ' ' + zip\r\n }\r\n\r\n return _address\r\n } else {\r\n let _address = _get(address, 'addressOne', '')\r\n const addressTwo = _get(address, 'addressTwo', '')\r\n const addressThree = _get(address, 'addressThree', '')\r\n const addressFour = _get(address, 'addressFour', '')\r\n const addressFive = _get(address, 'addressFive', '')\r\n\r\n if (typeof addressTwo === 'string' && addressTwo.length > 0) {\r\n _address += ' ' + addressTwo\r\n }\r\n if (typeof addressThree === 'string' && addressThree.length > 0) {\r\n _address += ' ' + addressThree\r\n }\r\n if (typeof addressFour === 'string' && addressFour.length > 0) {\r\n _address += ' ' + addressFour\r\n }\r\n if (typeof addressFive === 'string' && addressFive.length > 0) {\r\n _address += ' ' + addressFive\r\n }\r\n\r\n return _address\r\n }\r\n}\r\n","'use strict';\nvar $at = require('./_string-at')(true);\n\n// 21.1.3.27 String.prototype[@@iterator]()\nrequire('./_iter-define')(String, 'String', function (iterated) {\n this._t = String(iterated); // target\n this._i = 0; // next index\n// 21.1.5.2.1 %StringIteratorPrototype%.next()\n}, function () {\n var O = this._t;\n var index = this._i;\n var point;\n if (index >= O.length) return { value: undefined, done: true };\n point = $at(O, index);\n this._i += point.length;\n return { value: point, done: false };\n});\n","// Thank's IE8 for his funny defineProperty\nmodule.exports = !require('./_fails')(function () {\n return Object.defineProperty({}, 'a', { get: function () { return 7; } }).a != 7;\n});\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!./index.vue?vue&type=style&index=0&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!./index.vue?vue&type=style&index=0&lang=scss&\"","/**\n * These objects store the data about the DOM nodes we create, as well as some\n * extra data. They can then be transformed into real DOM nodes with the\n * `toNode` function or HTML markup using `toMarkup`. They are useful for both\n * storing extra properties on the nodes, as well as providing a way to easily\n * work with the DOM.\n *\n * Similar functions for working with MathML nodes exist in mathMLTree.js.\n */\n\nvar utils = require(\"./utils\");\n\n/**\n * Create an HTML className based on a list of classes. In addition to joining\n * with spaces, we also remove null or empty classes.\n */\nvar createClass = function(classes) {\n classes = classes.slice();\n for (var i = classes.length - 1; i >= 0; i--) {\n if (!classes[i]) {\n classes.splice(i, 1);\n }\n }\n\n return classes.join(\" \");\n};\n\n/**\n * This node represents a span node, with a className, a list of children, and\n * an inline style. It also contains information about its height, depth, and\n * maxFontSize.\n */\nfunction span(classes, children, height, depth, maxFontSize, style) {\n this.classes = classes || [];\n this.children = children || [];\n this.height = height || 0;\n this.depth = depth || 0;\n this.maxFontSize = maxFontSize || 0;\n this.style = style || {};\n this.attributes = {};\n}\n\n/**\n * Sets an arbitrary attribute on the span. Warning: use this wisely. Not all\n * browsers support attributes the same, and having too many custom attributes\n * is probably bad.\n */\nspan.prototype.setAttribute = function(attribute, value) {\n this.attributes[attribute] = value;\n};\n\n/**\n * Convert the span into an HTML node\n */\nspan.prototype.toNode = function() {\n var span = document.createElement(\"span\");\n\n // Apply the class\n span.className = createClass(this.classes);\n\n // Apply inline styles\n for (var style in this.style) {\n if (Object.prototype.hasOwnProperty.call(this.style, style)) {\n span.style[style] = this.style[style];\n }\n }\n\n // Apply attributes\n for (var attr in this.attributes) {\n if (Object.prototype.hasOwnProperty.call(this.attributes, attr)) {\n span.setAttribute(attr, this.attributes[attr]);\n }\n }\n\n // Append the children, also as HTML nodes\n for (var i = 0; i < this.children.length; i++) {\n span.appendChild(this.children[i].toNode());\n }\n\n return span;\n};\n\n/**\n * Convert the span into an HTML markup string\n */\nspan.prototype.toMarkup = function() {\n var markup = \"\";\n\n // Add the markup of the children, also as markup\n for (var i = 0; i < this.children.length; i++) {\n markup += this.children[i].toMarkup();\n }\n\n markup += \"\";\n\n return markup;\n};\n\n/**\n * This node represents a document fragment, which contains elements, but when\n * placed into the DOM doesn't have any representation itself. Thus, it only\n * contains children and doesn't have any HTML properties. It also keeps track\n * of a height, depth, and maxFontSize.\n */\nfunction documentFragment(children, height, depth, maxFontSize) {\n this.children = children || [];\n this.height = height || 0;\n this.depth = depth || 0;\n this.maxFontSize = maxFontSize || 0;\n}\n\n/**\n * Convert the fragment into a node\n */\ndocumentFragment.prototype.toNode = function() {\n // Create a fragment\n var frag = document.createDocumentFragment();\n\n // Append the children\n for (var i = 0; i < this.children.length; i++) {\n frag.appendChild(this.children[i].toNode());\n }\n\n return frag;\n};\n\n/**\n * Convert the fragment into HTML markup\n */\ndocumentFragment.prototype.toMarkup = function() {\n var markup = \"\";\n\n // Simply concatenate the markup for the children together\n for (var i = 0; i < this.children.length; i++) {\n markup += this.children[i].toMarkup();\n }\n\n return markup;\n};\n\n/**\n * A symbol node contains information about a single symbol. It either renders\n * to a single text node, or a span with a single text node in it, depending on\n * whether it has CSS classes, styles, or needs italic correction.\n */\nfunction symbolNode(value, height, depth, italic, skew, classes, style) {\n this.value = value || \"\";\n this.height = height || 0;\n this.depth = depth || 0;\n this.italic = italic || 0;\n this.skew = skew || 0;\n this.classes = classes || [];\n this.style = style || {};\n this.maxFontSize = 0;\n}\n\n/**\n * Creates a text node or span from a symbol node. Note that a span is only\n * created if it is needed.\n */\nsymbolNode.prototype.toNode = function() {\n var node = document.createTextNode(this.value);\n var span = null;\n\n if (this.italic > 0) {\n span = document.createElement(\"span\");\n span.style.marginRight = this.italic + \"em\";\n }\n\n if (this.classes.length > 0) {\n span = span || document.createElement(\"span\");\n span.className = createClass(this.classes);\n }\n\n for (var style in this.style) {\n if (this.style.hasOwnProperty(style)) {\n span = span || document.createElement(\"span\");\n span.style[style] = this.style[style];\n }\n }\n\n if (span) {\n span.appendChild(node);\n return span;\n } else {\n return node;\n }\n};\n\n/**\n * Creates markup for a symbol node.\n */\nsymbolNode.prototype.toMarkup = function() {\n // TODO(alpert): More duplication than I'd like from\n // span.prototype.toMarkup and symbolNode.prototype.toNode...\n var needsSpan = false;\n\n var markup = \" 0) {\n styles += \"margin-right:\" + this.italic + \"em;\";\n }\n for (var style in this.style) {\n if (this.style.hasOwnProperty(style)) {\n styles += utils.hyphenate(style) + \":\" + this.style[style] + \";\";\n }\n }\n\n if (styles) {\n needsSpan = true;\n markup += \" style=\\\"\" + utils.escape(styles) + \"\\\"\";\n }\n\n var escaped = utils.escape(this.value);\n if (needsSpan) {\n markup += \">\";\n markup += escaped;\n markup += \"\";\n return markup;\n } else {\n return escaped;\n }\n};\n\nmodule.exports = {\n span: span,\n documentFragment: documentFragment,\n symbolNode: symbolNode,\n};\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!./index.vue?vue&type=style&index=1&id=7e0642de&lang=scss&scoped=true&\"; 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!./index.vue?vue&type=style&index=1&id=7e0642de&lang=scss&scoped=true&\"","module.exports = __webpack_public_path__ + \"img/text.85c266be.png\";","module.exports = function (bitmap, value) {\n return {\n enumerable: !(bitmap & 1),\n configurable: !(bitmap & 2),\n writable: !(bitmap & 4),\n value: value\n };\n};\n","var render = function () {var _vm=this;var _h=_vm.$createElement;var _c=_vm._self._c||_h;return _c('span',{staticClass:\"pl-2\"},[_c('button',{staticClass:\"pt-2\",staticStyle:{\"vertical-align\":\"sub\"},attrs:{\"tabindex\":\"-1\"},on:{\"click\":function($event){$event.preventDefault();_vm.isActive = !_vm.isActive}}},[_c('svg',{staticStyle:{\"width\":\"24px\",\"height\":\"24px\"},attrs:{\"viewBox\":\"0 0 24 24\"}},[_c('path',{attrs:{\"fill\":\"currentColor\",\"d\":\"M13,9H11V7H13M13,17H11V11H13M12,2A10,10 0 0,0 2,12A10,10 0 0,0 12,22A10,10 0 0,0 22,12A10,10 0 0,0 12,2Z\"}})])]),_c('b-message',{attrs:{\"type\":\"is-info\",\"aria-close-label\":\"Close message\"},model:{value:(_vm.isActive),callback:function ($$v) {_vm.isActive=$$v},expression:\"isActive\"}},[_c('div',{staticClass:\"subtitle\"},[_vm._v(_vm._s(_vm.information || ''))]),(_vm.imageOnePath)?_c('article',{staticClass:\"media\"},[_c('figure',{staticClass:\"media-left\"},[(_vm.imageOnePath === 'imageOnePath')?_c('p',{staticClass:\"image is-164x164\"},[_c('img',{staticStyle:{\"width\":\"164px\"},attrs:{\"src\":require('@/assets/images/checkboxes.png')}})]):(_vm.imageOnePath === 'markdown')?_c('p',{staticClass:\"image is-164x164\"},[_c('img',{staticStyle:{\"width\":\"164px\"},attrs:{\"src\":require('@/assets/images/markdown.png')}})]):_vm._e()]),_c('div',{staticClass:\"media-content\"},[_c('div',{staticClass:\"content\"},[_c('p',[_c('strong',{staticClass:\"subtitle\"},[_vm._v(_vm._s(_vm.titleOne))]),_c('br'),_c('span',[_vm._v(_vm._s(_vm.infoOne))])])]),_c('nav',{staticClass:\"level is-mobile\"},[_c('div',{staticClass:\"level-left\"},[_c('a',{staticClass:\"level-item\"},[_c('span',{staticClass:\"icon is-small\"},[_c('i',{staticClass:\"fas fa-reply\"})])]),_c('a',{staticClass:\"level-item\"},[_c('span',{staticClass:\"icon is-small\"},[_c('i',{staticClass:\"fas fa-retweet\"})])]),_c('a',{staticClass:\"level-item\"},[_c('span',{staticClass:\"icon is-small\"},[_c('i',{staticClass:\"fas fa-heart\"})])])])])])]):_vm._e(),(_vm.imageTwoPath)?_c('article',{staticClass:\"media\"},[_c('figure',{staticClass:\"media-left\"},[(_vm.imageTwoPath === 'imageTwoPath')?_c('p',{staticClass:\"image is-164x164\"},[_c('img',{staticStyle:{\"width\":\"164px\"},attrs:{\"src\":require('@/assets/images/radiobuttons.png')}})]):(_vm.imageTwoPath === 'recipients')?_c('p',{staticClass:\"image is-164x164\"},[_c('img',{staticStyle:{\"width\":\"164px\"},attrs:{\"src\":require('@/assets/images/recipients.png')}})]):_vm._e()]),_c('div',{staticClass:\"media-content\"},[_c('div',{staticClass:\"content\"},[_c('p',[_c('strong',{staticClass:\"subtitle\"},[_vm._v(_vm._s(_vm.titleTwo))]),_c('br'),_vm._v(\" \"+_vm._s(_vm.infoTwo)+\" \")])]),_c('nav',{staticClass:\"level is-mobile\"},[_c('div',{staticClass:\"level-left\"},[_c('a',{staticClass:\"level-item\"},[_c('span',{staticClass:\"icon is-small\"},[_c('i',{staticClass:\"fas fa-reply\"})])]),_c('a',{staticClass:\"level-item\"},[_c('span',{staticClass:\"icon is-small\"},[_c('i',{staticClass:\"fas fa-retweet\"})])]),_c('a',{staticClass:\"level-item\"},[_c('span',{staticClass:\"icon is-small\"},[_c('i',{staticClass:\"fas fa-heart\"})])])])])])]):_vm._e(),(_vm.imageThreePath)?_c('article',{staticClass:\"media\"},[_c('figure',{staticClass:\"media-left\"},[(_vm.imageThreePath === 'imageThreePath')?_c('p',{staticClass:\"image is-164x164\"},[_c('img',{staticStyle:{\"width\":\"164px\"},attrs:{\"src\":require('@/assets/images/text.png')}})]):(_vm.imageThreePath === 'attachments')?_c('p',{staticClass:\"image is-164x164\"},[_c('img',{staticStyle:{\"width\":\"164px\"},attrs:{\"src\":require('@/assets/images/attachments.png')}})]):_vm._e()]),_c('div',{staticClass:\"media-content\"},[_c('div',{staticClass:\"content\"},[_c('p',[_c('strong',{staticClass:\"subtitle\"},[_vm._v(_vm._s(_vm.titleThree))]),_c('br'),_vm._v(\" \"+_vm._s(_vm.infoThree)+\" \")])]),_c('nav',{staticClass:\"level is-mobile\"},[_c('div',{staticClass:\"level-left\"},[_c('a',{staticClass:\"level-item\"},[_c('span',{staticClass:\"icon is-small\"},[_c('i',{staticClass:\"fas fa-reply\"})])]),_c('a',{staticClass:\"level-item\"},[_c('span',{staticClass:\"icon is-small\"},[_c('i',{staticClass:\"fas fa-retweet\"})])]),_c('a',{staticClass:\"level-item\"},[_c('span',{staticClass:\"icon is-small\"},[_c('i',{staticClass:\"fas fa-heart\"})])])])])])]):_vm._e(),(_vm.imageFourPath)?_c('article',{staticClass:\"media\"},[_c('figure',{staticClass:\"media-left\"},[_c('p',{staticClass:\"image is-164x164\"},[_c('img',{staticStyle:{\"width\":\"164px\"},attrs:{\"src\":require('@/assets/images/scale.png')}})])]),_c('div',{staticClass:\"media-content\"},[_c('div',{staticClass:\"content\"},[_c('p',[_c('strong',{staticClass:\"subtitle\"},[_vm._v(_vm._s(_vm.titleFour))]),_c('br'),_vm._v(\" \"+_vm._s(_vm.infoFour)+\" \")])]),_c('nav',{staticClass:\"level is-mobile\"},[_c('div',{staticClass:\"level-left\"},[_c('a',{staticClass:\"level-item\"},[_c('span',{staticClass:\"icon is-small\"},[_c('i',{staticClass:\"fas fa-reply\"})])]),_c('a',{staticClass:\"level-item\"},[_c('span',{staticClass:\"icon is-small\"},[_c('i',{staticClass:\"fas fa-retweet\"})])]),_c('a',{staticClass:\"level-item\"},[_c('span',{staticClass:\"icon is-small\"},[_c('i',{staticClass:\"fas fa-heart\"})])])])])])]):_vm._e()])],1)}\nvar staticRenderFns = []\n\nexport { render, staticRenderFns }","\r\n \r\n \r\n \r\n \r\n \r\n
\r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n\r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n\r\n\r\n\r\n\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!./index.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!./index.vue?vue&type=script&lang=js&\"","import { render, staticRenderFns } from \"./index.vue?vue&type=template&id=33ec518d&\"\nimport script from \"./index.vue?vue&type=script&lang=js&\"\nexport * from \"./index.vue?vue&type=script&lang=js&\"\nimport style0 from \"./index.vue?vue&type=style&index=0&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 null,\n null\n \n)\n\nexport default component.exports","// \"Zero\" preset, with nothing enabled. Useful for manual configuring of simple\n// modes. For example, to parse bold/italic only.\n\n'use strict';\n\n\nmodule.exports = {\n options: {\n html: false, // Enable HTML tags in source\n xhtmlOut: false, // Use '/' to close single tags ( )\n breaks: false, // Convert '\\n' in paragraphs into \n langPrefix: 'language-', // CSS language prefix for fenced blocks\n linkify: false, // autoconvert URL-like texts to links\n\n // Enable some language-neutral replacements + quotes beautification\n typographer: false,\n\n // Double + single quotes replacement pairs, when typographer enabled,\n // and smartquotes on. Could be either a String or an Array.\n //\n // For example, you can use '«»„“' for Russian, '„“‚‘' for German,\n // and ['«\\xA0', '\\xA0»', '‹\\xA0', '\\xA0›'] for French (including nbsp).\n quotes: '\\u201c\\u201d\\u2018\\u2019', /* “”‘’ */\n\n // Highlighter function. Should return escaped HTML,\n // or '' if the source string is not changed and should be escaped externaly.\n // If result starts with 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","// Merge adjacent text nodes into one, and re-calculate all token levels\n//\n'use strict';\n\n\nmodule.exports = function text_collapse(state) {\n var curr, last,\n level = 0,\n tokens = state.tokens,\n max = state.tokens.length;\n\n for (curr = last = 0; curr < max; curr++) {\n // re-calculate levels\n level += tokens[curr].nesting;\n tokens[curr].level = level;\n\n if (tokens[curr].type === 'text' &&\n curr + 1 < max &&\n tokens[curr + 1].type === 'text') {\n\n // collapse two adjacent text nodes\n tokens[curr + 1].content = tokens[curr].content + tokens[curr + 1].content;\n } else {\n if (curr !== last) { tokens[last] = tokens[curr]; }\n\n last++;\n }\n }\n\n if (curr !== last) {\n tokens.length = last;\n }\n};\n","var classof = require('./_classof');\nvar ITERATOR = require('./_wks')('iterator');\nvar Iterators = require('./_iterators');\nmodule.exports = require('./_core').getIteratorMethod = function (it) {\n if (it != undefined) return it[ITERATOR]\n || it['@@iterator']\n || Iterators[classof(it)];\n};\n","var clone = (function() {\n'use strict';\n\nfunction _instanceof(obj, type) {\n return type != null && obj instanceof type;\n}\n\nvar nativeMap;\ntry {\n nativeMap = Map;\n} catch(_) {\n // maybe a reference error because no `Map`. Give it a dummy value that no\n // value will ever be an instanceof.\n nativeMap = function() {};\n}\n\nvar nativeSet;\ntry {\n nativeSet = Set;\n} catch(_) {\n nativeSet = function() {};\n}\n\nvar nativePromise;\ntry {\n nativePromise = Promise;\n} catch(_) {\n nativePromise = function() {};\n}\n\n/**\n * Clones (copies) an Object using deep copying.\n *\n * This function supports circular references by default, but if you are certain\n * there are no circular references in your object, you can save some CPU time\n * by calling clone(obj, false).\n *\n * Caution: if `circular` is false and `parent` contains circular references,\n * your program may enter an infinite loop and crash.\n *\n * @param `parent` - the object to be cloned\n * @param `circular` - set to true if the object to be cloned may contain\n * circular references. (optional - true by default)\n * @param `depth` - set to a number if the object is only to be cloned to\n * a particular depth. (optional - defaults to Infinity)\n * @param `prototype` - sets the prototype to be used when cloning an object.\n * (optional - defaults to parent prototype).\n * @param `includeNonEnumerable` - set to true if the non-enumerable properties\n * should be cloned as well. Non-enumerable properties on the prototype\n * chain will be ignored. (optional - false by default)\n*/\nfunction clone(parent, circular, depth, prototype, includeNonEnumerable) {\n if (typeof circular === 'object') {\n depth = circular.depth;\n prototype = circular.prototype;\n includeNonEnumerable = circular.includeNonEnumerable;\n circular = circular.circular;\n }\n // maintain two arrays for circular references, where corresponding parents\n // and children have the same index\n var allParents = [];\n var allChildren = [];\n\n var useBuffer = typeof Buffer != 'undefined';\n\n if (typeof circular == 'undefined')\n circular = true;\n\n if (typeof depth == 'undefined')\n depth = Infinity;\n\n // recurse this function so we don't reset allParents and allChildren\n function _clone(parent, depth) {\n // cloning null always returns null\n if (parent === null)\n return null;\n\n if (depth === 0)\n return parent;\n\n var child;\n var proto;\n if (typeof parent != 'object') {\n return parent;\n }\n\n if (_instanceof(parent, nativeMap)) {\n child = new nativeMap();\n } else if (_instanceof(parent, nativeSet)) {\n child = new nativeSet();\n } else if (_instanceof(parent, nativePromise)) {\n child = new nativePromise(function (resolve, reject) {\n parent.then(function(value) {\n resolve(_clone(value, depth - 1));\n }, function(err) {\n reject(_clone(err, depth - 1));\n });\n });\n } else if (clone.__isArray(parent)) {\n child = [];\n } else if (clone.__isRegExp(parent)) {\n child = new RegExp(parent.source, __getRegExpFlags(parent));\n if (parent.lastIndex) child.lastIndex = parent.lastIndex;\n } else if (clone.__isDate(parent)) {\n child = new Date(parent.getTime());\n } else if (useBuffer && Buffer.isBuffer(parent)) {\n if (Buffer.allocUnsafe) {\n // Node.js >= 4.5.0\n child = Buffer.allocUnsafe(parent.length);\n } else {\n // Older Node.js versions\n child = new Buffer(parent.length);\n }\n parent.copy(child);\n return child;\n } else if (_instanceof(parent, Error)) {\n child = Object.create(parent);\n } else {\n if (typeof prototype == 'undefined') {\n proto = Object.getPrototypeOf(parent);\n child = Object.create(proto);\n }\n else {\n child = Object.create(prototype);\n proto = prototype;\n }\n }\n\n if (circular) {\n var index = allParents.indexOf(parent);\n\n if (index != -1) {\n return allChildren[index];\n }\n allParents.push(parent);\n allChildren.push(child);\n }\n\n if (_instanceof(parent, nativeMap)) {\n parent.forEach(function(value, key) {\n var keyChild = _clone(key, depth - 1);\n var valueChild = _clone(value, depth - 1);\n child.set(keyChild, valueChild);\n });\n }\n if (_instanceof(parent, nativeSet)) {\n parent.forEach(function(value) {\n var entryChild = _clone(value, depth - 1);\n child.add(entryChild);\n });\n }\n\n for (var i in parent) {\n var attrs;\n if (proto) {\n attrs = Object.getOwnPropertyDescriptor(proto, i);\n }\n\n if (attrs && attrs.set == null) {\n continue;\n }\n child[i] = _clone(parent[i], depth - 1);\n }\n\n if (Object.getOwnPropertySymbols) {\n var symbols = Object.getOwnPropertySymbols(parent);\n for (var i = 0; i < symbols.length; i++) {\n // Don't need to worry about cloning a symbol because it is a primitive,\n // like a number or string.\n var symbol = symbols[i];\n var descriptor = Object.getOwnPropertyDescriptor(parent, symbol);\n if (descriptor && !descriptor.enumerable && !includeNonEnumerable) {\n continue;\n }\n child[symbol] = _clone(parent[symbol], depth - 1);\n if (!descriptor.enumerable) {\n Object.defineProperty(child, symbol, {\n enumerable: false\n });\n }\n }\n }\n\n if (includeNonEnumerable) {\n var allPropertyNames = Object.getOwnPropertyNames(parent);\n for (var i = 0; i < allPropertyNames.length; i++) {\n var propertyName = allPropertyNames[i];\n var descriptor = Object.getOwnPropertyDescriptor(parent, propertyName);\n if (descriptor && descriptor.enumerable) {\n continue;\n }\n child[propertyName] = _clone(parent[propertyName], depth - 1);\n Object.defineProperty(child, propertyName, {\n enumerable: false\n });\n }\n }\n\n return child;\n }\n\n return _clone(parent, depth);\n}\n\n/**\n * Simple flat clone using prototype, accepts only objects, usefull for property\n * override on FLAT configuration object (no nested props).\n *\n * USE WITH CAUTION! This may not behave as you wish if you do not know how this\n * works.\n */\nclone.clonePrototype = function clonePrototype(parent) {\n if (parent === null)\n return null;\n\n var c = function () {};\n c.prototype = parent;\n return new c();\n};\n\n// private utility functions\n\nfunction __objToStr(o) {\n return Object.prototype.toString.call(o);\n}\nclone.__objToStr = __objToStr;\n\nfunction __isDate(o) {\n return typeof o === 'object' && __objToStr(o) === '[object Date]';\n}\nclone.__isDate = __isDate;\n\nfunction __isArray(o) {\n return typeof o === 'object' && __objToStr(o) === '[object Array]';\n}\nclone.__isArray = __isArray;\n\nfunction __isRegExp(o) {\n return typeof o === 'object' && __objToStr(o) === '[object RegExp]';\n}\nclone.__isRegExp = __isRegExp;\n\nfunction __getRegExpFlags(re) {\n var flags = '';\n if (re.global) flags += 'g';\n if (re.ignoreCase) flags += 'i';\n if (re.multiline) flags += 'm';\n return flags;\n}\nclone.__getRegExpFlags = __getRegExpFlags;\n\nreturn clone;\n})();\n\nif (typeof module === 'object' && module.exports) {\n module.exports = clone;\n}\n","'use strict';\nvar create = require('./_object-create');\nvar descriptor = require('./_property-desc');\nvar setToStringTag = require('./_set-to-string-tag');\nvar IteratorPrototype = {};\n\n// 25.1.2.1.1 %IteratorPrototype%[@@iterator]()\nrequire('./_hide')(IteratorPrototype, require('./_wks')('iterator'), function () { return this; });\n\nmodule.exports = function (Constructor, NAME, next) {\n Constructor.prototype = create(IteratorPrototype, { next: descriptor(1, next) });\n setToStringTag(Constructor, NAME + ' Iterator');\n};\n","// Process autolinks ''\n\n'use strict';\n\n\n/*eslint max-len:0*/\nvar EMAIL_RE = /^<([a-zA-Z0-9.!#$%&'*+\\/=?^_`{|}~-]+@[a-zA-Z0-9](?:[a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?(?:\\.[a-zA-Z0-9](?:[a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?)*)>/;\nvar AUTOLINK_RE = /^<([a-zA-Z][a-zA-Z0-9+.\\-]{1,31}):([^<>\\x00-\\x20]*)>/;\n\n\nmodule.exports = function autolink(state, silent) {\n var tail, linkMatch, emailMatch, url, fullUrl, token,\n pos = state.pos;\n\n if (state.src.charCodeAt(pos) !== 0x3C/* < */) { return false; }\n\n tail = state.src.slice(pos);\n\n if (tail.indexOf('>') < 0) { return false; }\n\n if (AUTOLINK_RE.test(tail)) {\n linkMatch = tail.match(AUTOLINK_RE);\n\n url = linkMatch[0].slice(1, -1);\n fullUrl = state.md.normalizeLink(url);\n if (!state.md.validateLink(fullUrl)) { return false; }\n\n if (!silent) {\n token = state.push('link_open', 'a', 1);\n token.attrs = [ [ 'href', fullUrl ] ];\n token.markup = 'autolink';\n token.info = 'auto';\n\n token = state.push('text', '', 0);\n token.content = state.md.normalizeLinkText(url);\n\n token = state.push('link_close', 'a', -1);\n token.markup = 'autolink';\n token.info = 'auto';\n }\n\n state.pos += linkMatch[0].length;\n return true;\n }\n\n if (EMAIL_RE.test(tail)) {\n emailMatch = tail.match(EMAIL_RE);\n\n url = emailMatch[0].slice(1, -1);\n fullUrl = state.md.normalizeLink('mailto:' + url);\n if (!state.md.validateLink(fullUrl)) { return false; }\n\n if (!silent) {\n token = state.push('link_open', 'a', 1);\n token.attrs = [ [ 'href', fullUrl ] ];\n token.markup = 'autolink';\n token.info = 'auto';\n\n token = state.push('text', '', 0);\n token.content = state.md.normalizeLinkText(url);\n\n token = state.push('link_close', 'a', -1);\n token.markup = 'autolink';\n token.info = 'auto';\n }\n\n state.pos += emailMatch[0].length;\n return true;\n }\n\n return false;\n};\n","var render = function () {var _vm=this;var _h=_vm.$createElement;var _c=_vm._self._c||_h;return ((_vm.visible && _vm.visible == true) || _vm.visible == undefined)?_c('span',{staticClass:\"button is-info is-light is-small is-outline is-rounded\"},[_c('router-link',{attrs:{\"to\":_vm.to}},[_vm._v(\" \"+_vm._s(_vm.text)+\" \")])],1):_vm._e()}\nvar staticRenderFns = []\n\nexport { render, staticRenderFns }","\r\n \r\n \r\n {{ text }}\r\n \r\n \r\n\r\n\r\n\r\n\r\n\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!./Simple.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!./Simple.vue?vue&type=script&lang=js&\"","import { render, staticRenderFns } from \"./Simple.vue?vue&type=template&id=049badd8&scoped=true&\"\nimport script from \"./Simple.vue?vue&type=script&lang=js&\"\nexport * from \"./Simple.vue?vue&type=script&lang=js&\"\nimport style0 from \"./Simple.vue?vue&type=style&index=0&id=049badd8&lang=scss&scoped=true&\"\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 \"049badd8\",\n null\n \n)\n\nexport default component.exports","(function (root) {\n \"use strict\";\n\n/***** unorm.js *****/\n\n/*\n * UnicodeNormalizer 1.0.0\n * Copyright (c) 2008 Matsuza\n * Dual licensed under the MIT (MIT-LICENSE.txt) and GPL (GPL-LICENSE.txt) licenses.\n * $Date: 2008-06-05 16:44:17 +0200 (Thu, 05 Jun 2008) $\n * $Rev: 13309 $\n */\n\n var DEFAULT_FEATURE = [null, 0, {}];\n var CACHE_THRESHOLD = 10;\n var SBase = 0xAC00, LBase = 0x1100, VBase = 0x1161, TBase = 0x11A7, LCount = 19, VCount = 21, TCount = 28;\n var NCount = VCount * TCount; // 588\n var SCount = LCount * NCount; // 11172\n\n var UChar = function(cp, feature){\n this.codepoint = cp;\n this.feature = feature;\n };\n\n // Strategies\n var cache = {};\n var cacheCounter = [];\n for (var i = 0; i <= 0xFF; ++i){\n cacheCounter[i] = 0;\n }\n\n function fromCache(next, cp, needFeature){\n var ret = cache[cp];\n if(!ret){\n ret = next(cp, needFeature);\n if(!!ret.feature && ++cacheCounter[(cp >> 8) & 0xFF] > CACHE_THRESHOLD){\n cache[cp] = ret;\n }\n }\n return ret;\n }\n\n function fromData(next, cp, needFeature){\n var hash = cp & 0xFF00;\n var dunit = UChar.udata[hash] || {};\n var f = dunit[cp];\n return f ? new UChar(cp, f) : new UChar(cp, DEFAULT_FEATURE);\n }\n function fromCpOnly(next, cp, needFeature){\n return !!needFeature ? next(cp, needFeature) : new UChar(cp, null);\n }\n function fromRuleBasedJamo(next, cp, needFeature){\n var j;\n if(cp < LBase || (LBase + LCount <= cp && cp < SBase) || (SBase + SCount < cp)){\n return next(cp, needFeature);\n }\n if(LBase <= cp && cp < LBase + LCount){\n var c = {};\n var base = (cp - LBase) * VCount;\n for (j = 0; j < VCount; ++j){\n c[VBase + j] = SBase + TCount * (j + base);\n }\n return new UChar(cp, [,,c]);\n }\n\n var SIndex = cp - SBase;\n var TIndex = SIndex % TCount;\n var feature = [];\n if(TIndex !== 0){\n feature[0] = [SBase + SIndex - TIndex, TBase + TIndex];\n } else {\n feature[0] = [LBase + Math.floor(SIndex / NCount), VBase + Math.floor((SIndex % NCount) / TCount)];\n feature[2] = {};\n for (j = 1; j < TCount; ++j){\n feature[2][TBase + j] = cp + j;\n }\n }\n return new UChar(cp, feature);\n }\n function fromCpFilter(next, cp, needFeature){\n return cp < 60 || 13311 < cp && cp < 42607 ? new UChar(cp, DEFAULT_FEATURE) : next(cp, needFeature);\n }\n\n var strategies = [fromCpFilter, fromCache, fromCpOnly, fromRuleBasedJamo, fromData];\n\n UChar.fromCharCode = strategies.reduceRight(function (next, strategy) {\n return function (cp, needFeature) {\n return strategy(next, cp, needFeature);\n };\n }, null);\n\n UChar.isHighSurrogate = function(cp){\n return cp >= 0xD800 && cp <= 0xDBFF;\n };\n UChar.isLowSurrogate = function(cp){\n return cp >= 0xDC00 && cp <= 0xDFFF;\n };\n\n UChar.prototype.prepFeature = function(){\n if(!this.feature){\n this.feature = UChar.fromCharCode(this.codepoint, true).feature;\n }\n };\n\n UChar.prototype.toString = function(){\n if(this.codepoint < 0x10000){\n return String.fromCharCode(this.codepoint);\n } else {\n var x = this.codepoint - 0x10000;\n return String.fromCharCode(Math.floor(x / 0x400) + 0xD800, x % 0x400 + 0xDC00);\n }\n };\n\n UChar.prototype.getDecomp = function(){\n this.prepFeature();\n return this.feature[0] || null;\n };\n\n UChar.prototype.isCompatibility = function(){\n this.prepFeature();\n return !!this.feature[1] && (this.feature[1] & (1 << 8));\n };\n UChar.prototype.isExclude = function(){\n this.prepFeature();\n return !!this.feature[1] && (this.feature[1] & (1 << 9));\n };\n UChar.prototype.getCanonicalClass = function(){\n this.prepFeature();\n return !!this.feature[1] ? (this.feature[1] & 0xff) : 0;\n };\n UChar.prototype.getComposite = function(following){\n this.prepFeature();\n if(!this.feature[2]){\n return null;\n }\n var cp = this.feature[2][following.codepoint];\n return cp ? UChar.fromCharCode(cp) : null;\n };\n\n var UCharIterator = function(str){\n this.str = str;\n this.cursor = 0;\n };\n UCharIterator.prototype.next = function(){\n if(!!this.str && this.cursor < this.str.length){\n var cp = this.str.charCodeAt(this.cursor++);\n var d;\n if(UChar.isHighSurrogate(cp) && this.cursor < this.str.length && UChar.isLowSurrogate((d = this.str.charCodeAt(this.cursor)))){\n cp = (cp - 0xD800) * 0x400 + (d -0xDC00) + 0x10000;\n ++this.cursor;\n }\n return UChar.fromCharCode(cp);\n } else {\n this.str = null;\n return null;\n }\n };\n\n var RecursDecompIterator = function(it, cano){\n this.it = it;\n this.canonical = cano;\n this.resBuf = [];\n };\n\n RecursDecompIterator.prototype.next = function(){\n function recursiveDecomp(cano, uchar){\n var decomp = uchar.getDecomp();\n if(!!decomp && !(cano && uchar.isCompatibility())){\n var ret = [];\n for(var i = 0; i < decomp.length; ++i){\n var a = recursiveDecomp(cano, UChar.fromCharCode(decomp[i]));\n ret = ret.concat(a);\n }\n return ret;\n } else {\n return [uchar];\n }\n }\n if(this.resBuf.length === 0){\n var uchar = this.it.next();\n if(!uchar){\n return null;\n }\n this.resBuf = recursiveDecomp(this.canonical, uchar);\n }\n return this.resBuf.shift();\n };\n\n var DecompIterator = function(it){\n this.it = it;\n this.resBuf = [];\n };\n\n DecompIterator.prototype.next = function(){\n var cc;\n if(this.resBuf.length === 0){\n do{\n var uchar = this.it.next();\n if(!uchar){\n break;\n }\n cc = uchar.getCanonicalClass();\n var inspt = this.resBuf.length;\n if(cc !== 0){\n for(; inspt > 0; --inspt){\n var uchar2 = this.resBuf[inspt - 1];\n var cc2 = uchar2.getCanonicalClass();\n if(cc2 <= cc){\n break;\n }\n }\n }\n this.resBuf.splice(inspt, 0, uchar);\n } while(cc !== 0);\n }\n return this.resBuf.shift();\n };\n\n var CompIterator = function(it){\n this.it = it;\n this.procBuf = [];\n this.resBuf = [];\n this.lastClass = null;\n };\n\n CompIterator.prototype.next = function(){\n while(this.resBuf.length === 0){\n var uchar = this.it.next();\n if(!uchar){\n this.resBuf = this.procBuf;\n this.procBuf = [];\n break;\n }\n if(this.procBuf.length === 0){\n this.lastClass = uchar.getCanonicalClass();\n this.procBuf.push(uchar);\n } else {\n var starter = this.procBuf[0];\n var composite = starter.getComposite(uchar);\n var cc = uchar.getCanonicalClass();\n if(!!composite && (this.lastClass < cc || this.lastClass === 0)){\n this.procBuf[0] = composite;\n } else {\n if(cc === 0){\n this.resBuf = this.procBuf;\n this.procBuf = [];\n }\n this.lastClass = cc;\n this.procBuf.push(uchar);\n }\n }\n }\n return this.resBuf.shift();\n };\n\n var createIterator = function(mode, str){\n switch(mode){\n case \"NFD\":\n return new DecompIterator(new RecursDecompIterator(new UCharIterator(str), true));\n case \"NFKD\":\n return new DecompIterator(new RecursDecompIterator(new UCharIterator(str), false));\n case \"NFC\":\n return new CompIterator(new DecompIterator(new RecursDecompIterator(new UCharIterator(str), true)));\n case \"NFKC\":\n return new CompIterator(new DecompIterator(new RecursDecompIterator(new UCharIterator(str), false)));\n }\n throw mode + \" is invalid\";\n };\n var normalize = function(mode, str){\n var it = createIterator(mode, str);\n var ret = \"\";\n var uchar;\n while(!!(uchar = it.next())){\n ret += uchar.toString();\n }\n return ret;\n };\n\n /* API functions */\n function nfd(str){\n return normalize(\"NFD\", str);\n }\n\n function nfkd(str){\n return normalize(\"NFKD\", str);\n }\n\n function nfc(str){\n return normalize(\"NFC\", str);\n }\n\n function nfkc(str){\n return normalize(\"NFKC\", str);\n }\n\n/* Unicode data 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/***** Module to export */\n var unorm = {\n nfc: nfc,\n nfd: nfd,\n nfkc: nfkc,\n nfkd: nfkd\n };\n\n /*globals module:true,define:true*/\n\n // CommonJS\n if (typeof module === \"object\") {\n module.exports = unorm;\n\n // AMD\n } else if (typeof define === \"function\" && define.amd) {\n define(\"unorm\", function () {\n return unorm;\n });\n\n // Global\n } else {\n root.unorm = unorm;\n }\n\n /***** Export as shim for String::normalize method *****/\n /*\n http://wiki.ecmascript.org/doku.php?id=harmony:specification_drafts#november_8_2013_draft_rev_21\n\n 21.1.3.12 String.prototype.normalize(form=\"NFC\")\n When the normalize method is called with one argument form, the following steps are taken:\n\n 1. Let O be CheckObjectCoercible(this value).\n 2. Let S be ToString(O).\n 3. ReturnIfAbrupt(S).\n 4. If form is not provided or undefined let form be \"NFC\".\n 5. Let f be ToString(form).\n 6. ReturnIfAbrupt(f).\n 7. If f is not one of \"NFC\", \"NFD\", \"NFKC\", or \"NFKD\", then throw a RangeError Exception.\n 8. Let ns be the String value is the result of normalizing S into the normalization form named by f as specified in Unicode Standard Annex #15, UnicodeNormalizatoin Forms.\n 9. Return ns.\n\n The length property of the normalize method is 0.\n\n *NOTE* The normalize function is intentionally generic; it does not require that its this value be a String object. Therefore it can be transferred to other kinds of objects for use as a method.\n */\n unorm.shimApplied = false;\n\n if (!String.prototype.normalize) {\n Object.defineProperty(String.prototype, \"normalize\", {\n enumerable: false,\n configurable: true,\n writable: true,\n value: function normalize (/*form*/) {\n \n var str = \"\" + this;\n var form = arguments[0] === undefined ? \"NFC\" : arguments[0];\n\n if (this === null || this === undefined) {\n throw new TypeError(\"Cannot call method on \" + Object.prototype.toString.call(this));\n }\n\n if (form === \"NFC\") {\n return unorm.nfc(str);\n } else if (form === \"NFD\") {\n return unorm.nfd(str);\n } else if (form === \"NFKC\") {\n return unorm.nfkc(str);\n } else if (form === \"NFKD\") {\n return unorm.nfkd(str);\n } else {\n throw new RangeError(\"Invalid normalization form: \" + form);\n }\n }\n });\n\n unorm.shimApplied = true;\n }\n}(this));\n","/*\n * List of Unicode code that are flagged as separator.\n *\n * Contains Unicode code of:\n * - Zs = Separator, space\n * - Zl = Separator, line\n * - Zp = Separator, paragraph\n *\n * This list has been computed from http://unicode.org/Public/UNIDATA/UnicodeData.txt\n * curl -s http://unicode.org/Public/UNIDATA/UnicodeData.txt | grep -E ';Zs;|;Zl;|;Zp;' | cut -d \\; -f 1 | xargs -I{} printf '%d, ' 0x{}\n *\n */\nexports.Z = [32, 160, 5760, 8192, 8193, 8194, 8195, 8196, 8197, 8198, 8199, 8200, 8201, 8202, 8232, 8233, 8239, 8287, 12288];\n","/**\n * @license\n * Lodash \n * Copyright OpenJS Foundation and other contributors \n * Released under MIT license \n * Based on Underscore.js 1.8.3 \n * Copyright Jeremy Ashkenas, DocumentCloud and Investigative Reporters & Editors\n */\n;(function() {\n\n /** Used as a safe reference for `undefined` in pre-ES5 environments. */\n var undefined;\n\n /** Used as the semantic version number. */\n var VERSION = '4.17.21';\n\n /** Used as the size to enable large array optimizations. */\n var LARGE_ARRAY_SIZE = 200;\n\n /** Error message constants. */\n var CORE_ERROR_TEXT = 'Unsupported core-js use. Try https://npms.io/search?q=ponyfill.',\n FUNC_ERROR_TEXT = 'Expected a function',\n INVALID_TEMPL_VAR_ERROR_TEXT = 'Invalid `variable` option passed into `_.template`';\n\n /** Used to stand-in for `undefined` hash values. */\n var HASH_UNDEFINED = '__lodash_hash_undefined__';\n\n /** Used as the maximum memoize cache size. */\n var MAX_MEMOIZE_SIZE = 500;\n\n /** Used as the internal argument placeholder. */\n var PLACEHOLDER = '__lodash_placeholder__';\n\n /** Used to compose bitmasks for cloning. */\n var CLONE_DEEP_FLAG = 1,\n CLONE_FLAT_FLAG = 2,\n CLONE_SYMBOLS_FLAG = 4;\n\n /** Used to compose bitmasks for value comparisons. */\n var COMPARE_PARTIAL_FLAG = 1,\n COMPARE_UNORDERED_FLAG = 2;\n\n /** Used to compose bitmasks for function metadata. */\n var WRAP_BIND_FLAG = 1,\n WRAP_BIND_KEY_FLAG = 2,\n WRAP_CURRY_BOUND_FLAG = 4,\n WRAP_CURRY_FLAG = 8,\n WRAP_CURRY_RIGHT_FLAG = 16,\n WRAP_PARTIAL_FLAG = 32,\n WRAP_PARTIAL_RIGHT_FLAG = 64,\n WRAP_ARY_FLAG = 128,\n WRAP_REARG_FLAG = 256,\n WRAP_FLIP_FLAG = 512;\n\n /** Used as default options for `_.truncate`. */\n var DEFAULT_TRUNC_LENGTH = 30,\n DEFAULT_TRUNC_OMISSION = '...';\n\n /** Used to detect hot functions by number of calls within a span of milliseconds. */\n var HOT_COUNT = 800,\n HOT_SPAN = 16;\n\n /** Used to indicate the type of lazy iteratees. */\n var LAZY_FILTER_FLAG = 1,\n LAZY_MAP_FLAG = 2,\n LAZY_WHILE_FLAG = 3;\n\n /** Used as references for various `Number` constants. */\n var INFINITY = 1 / 0,\n MAX_SAFE_INTEGER = 9007199254740991,\n MAX_INTEGER = 1.7976931348623157e+308,\n NAN = 0 / 0;\n\n /** Used as references for the maximum length and index of an array. */\n var MAX_ARRAY_LENGTH = 4294967295,\n MAX_ARRAY_INDEX = MAX_ARRAY_LENGTH - 1,\n HALF_MAX_ARRAY_LENGTH = MAX_ARRAY_LENGTH >>> 1;\n\n /** Used to associate wrap methods with their bit flags. */\n var wrapFlags = [\n ['ary', WRAP_ARY_FLAG],\n ['bind', WRAP_BIND_FLAG],\n ['bindKey', WRAP_BIND_KEY_FLAG],\n ['curry', WRAP_CURRY_FLAG],\n ['curryRight', WRAP_CURRY_RIGHT_FLAG],\n ['flip', WRAP_FLIP_FLAG],\n ['partial', WRAP_PARTIAL_FLAG],\n ['partialRight', WRAP_PARTIAL_RIGHT_FLAG],\n ['rearg', WRAP_REARG_FLAG]\n ];\n\n /** `Object#toString` result references. */\n var argsTag = '[object Arguments]',\n arrayTag = '[object Array]',\n asyncTag = '[object AsyncFunction]',\n boolTag = '[object Boolean]',\n dateTag = '[object Date]',\n domExcTag = '[object DOMException]',\n errorTag = '[object Error]',\n funcTag = '[object Function]',\n genTag = '[object GeneratorFunction]',\n mapTag = '[object Map]',\n numberTag = '[object Number]',\n nullTag = '[object Null]',\n objectTag = '[object Object]',\n promiseTag = '[object Promise]',\n proxyTag = '[object Proxy]',\n regexpTag = '[object RegExp]',\n setTag = '[object Set]',\n stringTag = '[object String]',\n symbolTag = '[object Symbol]',\n undefinedTag = '[object Undefined]',\n weakMapTag = '[object WeakMap]',\n weakSetTag = '[object WeakSet]';\n\n var arrayBufferTag = '[object ArrayBuffer]',\n dataViewTag = '[object DataView]',\n float32Tag = '[object Float32Array]',\n float64Tag = '[object Float64Array]',\n int8Tag = '[object Int8Array]',\n int16Tag = '[object Int16Array]',\n int32Tag = '[object Int32Array]',\n uint8Tag = '[object Uint8Array]',\n uint8ClampedTag = '[object Uint8ClampedArray]',\n uint16Tag = '[object Uint16Array]',\n uint32Tag = '[object Uint32Array]';\n\n /** Used to match empty string literals in compiled template source. */\n var reEmptyStringLeading = /\\b__p \\+= '';/g,\n reEmptyStringMiddle = /\\b(__p \\+=) '' \\+/g,\n reEmptyStringTrailing = /(__e\\(.*?\\)|\\b__t\\)) \\+\\n'';/g;\n\n /** Used to match HTML entities and HTML characters. */\n var reEscapedHtml = /&(?:amp|lt|gt|quot|#39);/g,\n reUnescapedHtml = /[&<>\"']/g,\n reHasEscapedHtml = RegExp(reEscapedHtml.source),\n reHasUnescapedHtml = RegExp(reUnescapedHtml.source);\n\n /** Used to match template delimiters. */\n var reEscape = /<%-([\\s\\S]+?)%>/g,\n reEvaluate = /<%([\\s\\S]+?)%>/g,\n reInterpolate = /<%=([\\s\\S]+?)%>/g;\n\n /** Used to match property names within property paths. */\n var reIsDeepProp = /\\.|\\[(?:[^[\\]]*|([\"'])(?:(?!\\1)[^\\\\]|\\\\.)*?\\1)\\]/,\n reIsPlainProp = /^\\w*$/,\n rePropName = /[^.[\\]]+|\\[(?:(-?\\d+(?:\\.\\d+)?)|([\"'])((?:(?!\\2)[^\\\\]|\\\\.)*?)\\2)\\]|(?=(?:\\.|\\[\\])(?:\\.|\\[\\]|$))/g;\n\n /**\n * Used to match `RegExp`\n * [syntax characters](http://ecma-international.org/ecma-262/7.0/#sec-patterns).\n */\n var reRegExpChar = /[\\\\^$.*+?()[\\]{}|]/g,\n reHasRegExpChar = RegExp(reRegExpChar.source);\n\n /** Used to match leading whitespace. */\n var reTrimStart = /^\\s+/;\n\n /** Used to match a single whitespace character. */\n var reWhitespace = /\\s/;\n\n /** Used to match wrap detail comments. */\n var reWrapComment = /\\{(?:\\n\\/\\* \\[wrapped with .+\\] \\*\\/)?\\n?/,\n reWrapDetails = /\\{\\n\\/\\* \\[wrapped with (.+)\\] \\*/,\n reSplitDetails = /,? & /;\n\n /** Used to match words composed of alphanumeric characters. */\n var reAsciiWord = /[^\\x00-\\x2f\\x3a-\\x40\\x5b-\\x60\\x7b-\\x7f]+/g;\n\n /**\n * Used to validate the `validate` option in `_.template` variable.\n *\n * Forbids characters which could potentially change the meaning of the function argument definition:\n * - \"(),\" (modification of function parameters)\n * - \"=\" (default value)\n * - \"[]{}\" (destructuring of function parameters)\n * - \"/\" (beginning of a comment)\n * - whitespace\n */\n var reForbiddenIdentifierChars = /[()=,{}\\[\\]\\/\\s]/;\n\n /** Used to match backslashes in property paths. */\n var reEscapeChar = /\\\\(\\\\)?/g;\n\n /**\n * Used to match\n * [ES template delimiters](http://ecma-international.org/ecma-262/7.0/#sec-template-literal-lexical-components).\n */\n var reEsTemplate = /\\$\\{([^\\\\}]*(?:\\\\.[^\\\\}]*)*)\\}/g;\n\n /** Used to match `RegExp` flags from their coerced string values. */\n var reFlags = /\\w*$/;\n\n /** Used to detect bad signed hexadecimal string values. */\n var reIsBadHex = /^[-+]0x[0-9a-f]+$/i;\n\n /** Used to detect binary string values. */\n var reIsBinary = /^0b[01]+$/i;\n\n /** Used to detect host constructors (Safari). */\n var reIsHostCtor = /^\\[object .+?Constructor\\]$/;\n\n /** Used to detect octal string values. */\n var reIsOctal = /^0o[0-7]+$/i;\n\n /** Used to detect unsigned integer values. */\n var reIsUint = /^(?:0|[1-9]\\d*)$/;\n\n /** Used to match Latin Unicode letters (excluding mathematical operators). */\n var reLatin = /[\\xc0-\\xd6\\xd8-\\xf6\\xf8-\\xff\\u0100-\\u017f]/g;\n\n /** Used to ensure capturing order of template delimiters. */\n var reNoMatch = /($^)/;\n\n /** Used to match unescaped characters in compiled string literals. */\n var reUnescapedString = /['\\n\\r\\u2028\\u2029\\\\]/g;\n\n /** Used to compose unicode character classes. */\n var rsAstralRange = '\\\\ud800-\\\\udfff',\n rsComboMarksRange = '\\\\u0300-\\\\u036f',\n reComboHalfMarksRange = '\\\\ufe20-\\\\ufe2f',\n rsComboSymbolsRange = '\\\\u20d0-\\\\u20ff',\n rsComboRange = rsComboMarksRange + reComboHalfMarksRange + rsComboSymbolsRange,\n rsDingbatRange = '\\\\u2700-\\\\u27bf',\n rsLowerRange = 'a-z\\\\xdf-\\\\xf6\\\\xf8-\\\\xff',\n rsMathOpRange = '\\\\xac\\\\xb1\\\\xd7\\\\xf7',\n rsNonCharRange = '\\\\x00-\\\\x2f\\\\x3a-\\\\x40\\\\x5b-\\\\x60\\\\x7b-\\\\xbf',\n rsPunctuationRange = '\\\\u2000-\\\\u206f',\n rsSpaceRange = ' \\\\t\\\\x0b\\\\f\\\\xa0\\\\ufeff\\\\n\\\\r\\\\u2028\\\\u2029\\\\u1680\\\\u180e\\\\u2000\\\\u2001\\\\u2002\\\\u2003\\\\u2004\\\\u2005\\\\u2006\\\\u2007\\\\u2008\\\\u2009\\\\u200a\\\\u202f\\\\u205f\\\\u3000',\n rsUpperRange = 'A-Z\\\\xc0-\\\\xd6\\\\xd8-\\\\xde',\n rsVarRange = '\\\\ufe0e\\\\ufe0f',\n rsBreakRange = rsMathOpRange + rsNonCharRange + rsPunctuationRange + rsSpaceRange;\n\n /** Used to compose unicode capture groups. */\n var rsApos = \"['\\u2019]\",\n rsAstral = '[' + rsAstralRange + ']',\n rsBreak = '[' + rsBreakRange + ']',\n rsCombo = '[' + rsComboRange + ']',\n rsDigits = '\\\\d+',\n rsDingbat = '[' + rsDingbatRange + ']',\n rsLower = '[' + rsLowerRange + ']',\n rsMisc = '[^' + rsAstralRange + rsBreakRange + rsDigits + rsDingbatRange + rsLowerRange + rsUpperRange + ']',\n rsFitz = '\\\\ud83c[\\\\udffb-\\\\udfff]',\n rsModifier = '(?:' + rsCombo + '|' + rsFitz + ')',\n rsNonAstral = '[^' + rsAstralRange + ']',\n rsRegional = '(?:\\\\ud83c[\\\\udde6-\\\\uddff]){2}',\n rsSurrPair = '[\\\\ud800-\\\\udbff][\\\\udc00-\\\\udfff]',\n rsUpper = '[' + rsUpperRange + ']',\n rsZWJ = '\\\\u200d';\n\n /** Used to compose unicode regexes. */\n var rsMiscLower = '(?:' + rsLower + '|' + rsMisc + ')',\n rsMiscUpper = '(?:' + rsUpper + '|' + rsMisc + ')',\n rsOptContrLower = '(?:' + rsApos + '(?:d|ll|m|re|s|t|ve))?',\n rsOptContrUpper = '(?:' + rsApos + '(?:D|LL|M|RE|S|T|VE))?',\n reOptMod = rsModifier + '?',\n rsOptVar = '[' + rsVarRange + ']?',\n rsOptJoin = '(?:' + rsZWJ + '(?:' + [rsNonAstral, rsRegional, rsSurrPair].join('|') + ')' + rsOptVar + reOptMod + ')*',\n rsOrdLower = '\\\\d*(?:1st|2nd|3rd|(?![123])\\\\dth)(?=\\\\b|[A-Z_])',\n rsOrdUpper = '\\\\d*(?:1ST|2ND|3RD|(?![123])\\\\dTH)(?=\\\\b|[a-z_])',\n rsSeq = rsOptVar + reOptMod + rsOptJoin,\n rsEmoji = '(?:' + [rsDingbat, rsRegional, rsSurrPair].join('|') + ')' + rsSeq,\n rsSymbol = '(?:' + [rsNonAstral + rsCombo + '?', rsCombo, rsRegional, rsSurrPair, rsAstral].join('|') + ')';\n\n /** Used to match apostrophes. */\n var reApos = RegExp(rsApos, 'g');\n\n /**\n * Used to match [combining diacritical marks](https://en.wikipedia.org/wiki/Combining_Diacritical_Marks) and\n * [combining diacritical marks for symbols](https://en.wikipedia.org/wiki/Combining_Diacritical_Marks_for_Symbols).\n */\n var reComboMark = RegExp(rsCombo, 'g');\n\n /** Used to match [string symbols](https://mathiasbynens.be/notes/javascript-unicode). */\n var reUnicode = RegExp(rsFitz + '(?=' + rsFitz + ')|' + rsSymbol + rsSeq, 'g');\n\n /** Used to match complex or compound words. */\n var reUnicodeWord = RegExp([\n rsUpper + '?' + rsLower + '+' + rsOptContrLower + '(?=' + [rsBreak, rsUpper, '$'].join('|') + ')',\n rsMiscUpper + '+' + rsOptContrUpper + '(?=' + [rsBreak, rsUpper + rsMiscLower, '$'].join('|') + ')',\n rsUpper + '?' + rsMiscLower + '+' + rsOptContrLower,\n rsUpper + '+' + rsOptContrUpper,\n rsOrdUpper,\n rsOrdLower,\n rsDigits,\n rsEmoji\n ].join('|'), 'g');\n\n /** Used to detect strings with [zero-width joiners or code points from the astral planes](http://eev.ee/blog/2015/09/12/dark-corners-of-unicode/). */\n var reHasUnicode = RegExp('[' + rsZWJ + rsAstralRange + rsComboRange + rsVarRange + ']');\n\n /** Used to detect strings that need a more robust regexp to match words. */\n var reHasUnicodeWord = /[a-z][A-Z]|[A-Z]{2}[a-z]|[0-9][a-zA-Z]|[a-zA-Z][0-9]|[^a-zA-Z0-9 ]/;\n\n /** Used to assign default `context` object properties. */\n var contextProps = [\n 'Array', 'Buffer', 'DataView', 'Date', 'Error', 'Float32Array', 'Float64Array',\n 'Function', 'Int8Array', 'Int16Array', 'Int32Array', 'Map', 'Math', 'Object',\n 'Promise', 'RegExp', 'Set', 'String', 'Symbol', 'TypeError', 'Uint8Array',\n 'Uint8ClampedArray', 'Uint16Array', 'Uint32Array', 'WeakMap',\n '_', 'clearTimeout', 'isFinite', 'parseInt', 'setTimeout'\n ];\n\n /** Used to make template sourceURLs easier to identify. */\n var templateCounter = -1;\n\n /** Used to identify `toStringTag` values of typed arrays. */\n var typedArrayTags = {};\n typedArrayTags[float32Tag] = typedArrayTags[float64Tag] =\n typedArrayTags[int8Tag] = typedArrayTags[int16Tag] =\n typedArrayTags[int32Tag] = typedArrayTags[uint8Tag] =\n typedArrayTags[uint8ClampedTag] = typedArrayTags[uint16Tag] =\n typedArrayTags[uint32Tag] = true;\n typedArrayTags[argsTag] = typedArrayTags[arrayTag] =\n typedArrayTags[arrayBufferTag] = typedArrayTags[boolTag] =\n typedArrayTags[dataViewTag] = typedArrayTags[dateTag] =\n typedArrayTags[errorTag] = typedArrayTags[funcTag] =\n typedArrayTags[mapTag] = typedArrayTags[numberTag] =\n typedArrayTags[objectTag] = typedArrayTags[regexpTag] =\n typedArrayTags[setTag] = typedArrayTags[stringTag] =\n typedArrayTags[weakMapTag] = false;\n\n /** Used to identify `toStringTag` values supported by `_.clone`. */\n var cloneableTags = {};\n cloneableTags[argsTag] = cloneableTags[arrayTag] =\n cloneableTags[arrayBufferTag] = cloneableTags[dataViewTag] =\n cloneableTags[boolTag] = cloneableTags[dateTag] =\n cloneableTags[float32Tag] = cloneableTags[float64Tag] =\n cloneableTags[int8Tag] = cloneableTags[int16Tag] =\n cloneableTags[int32Tag] = cloneableTags[mapTag] =\n cloneableTags[numberTag] = cloneableTags[objectTag] =\n cloneableTags[regexpTag] = cloneableTags[setTag] =\n cloneableTags[stringTag] = cloneableTags[symbolTag] =\n cloneableTags[uint8Tag] = cloneableTags[uint8ClampedTag] =\n cloneableTags[uint16Tag] = cloneableTags[uint32Tag] = true;\n cloneableTags[errorTag] = cloneableTags[funcTag] =\n cloneableTags[weakMapTag] = false;\n\n /** Used to map Latin Unicode letters to basic Latin letters. */\n var deburredLetters = {\n // Latin-1 Supplement block.\n '\\xc0': 'A', '\\xc1': 'A', '\\xc2': 'A', '\\xc3': 'A', '\\xc4': 'A', '\\xc5': 'A',\n '\\xe0': 'a', '\\xe1': 'a', '\\xe2': 'a', '\\xe3': 'a', '\\xe4': 'a', '\\xe5': 'a',\n '\\xc7': 'C', '\\xe7': 'c',\n '\\xd0': 'D', '\\xf0': 'd',\n '\\xc8': 'E', '\\xc9': 'E', '\\xca': 'E', '\\xcb': 'E',\n '\\xe8': 'e', '\\xe9': 'e', '\\xea': 'e', '\\xeb': 'e',\n '\\xcc': 'I', '\\xcd': 'I', '\\xce': 'I', '\\xcf': 'I',\n '\\xec': 'i', '\\xed': 'i', '\\xee': 'i', '\\xef': 'i',\n '\\xd1': 'N', '\\xf1': 'n',\n '\\xd2': 'O', '\\xd3': 'O', '\\xd4': 'O', '\\xd5': 'O', '\\xd6': 'O', '\\xd8': 'O',\n '\\xf2': 'o', '\\xf3': 'o', '\\xf4': 'o', '\\xf5': 'o', '\\xf6': 'o', '\\xf8': 'o',\n '\\xd9': 'U', '\\xda': 'U', '\\xdb': 'U', '\\xdc': 'U',\n '\\xf9': 'u', '\\xfa': 'u', '\\xfb': 'u', '\\xfc': 'u',\n '\\xdd': 'Y', '\\xfd': 'y', '\\xff': 'y',\n '\\xc6': 'Ae', '\\xe6': 'ae',\n '\\xde': 'Th', '\\xfe': 'th',\n '\\xdf': 'ss',\n // Latin Extended-A block.\n '\\u0100': 'A', '\\u0102': 'A', '\\u0104': 'A',\n '\\u0101': 'a', '\\u0103': 'a', '\\u0105': 'a',\n '\\u0106': 'C', '\\u0108': 'C', '\\u010a': 'C', '\\u010c': 'C',\n '\\u0107': 'c', '\\u0109': 'c', '\\u010b': 'c', '\\u010d': 'c',\n '\\u010e': 'D', '\\u0110': 'D', '\\u010f': 'd', '\\u0111': 'd',\n '\\u0112': 'E', '\\u0114': 'E', '\\u0116': 'E', '\\u0118': 'E', '\\u011a': 'E',\n '\\u0113': 'e', '\\u0115': 'e', '\\u0117': 'e', '\\u0119': 'e', '\\u011b': 'e',\n '\\u011c': 'G', '\\u011e': 'G', '\\u0120': 'G', '\\u0122': 'G',\n '\\u011d': 'g', '\\u011f': 'g', '\\u0121': 'g', '\\u0123': 'g',\n '\\u0124': 'H', '\\u0126': 'H', '\\u0125': 'h', '\\u0127': 'h',\n '\\u0128': 'I', '\\u012a': 'I', '\\u012c': 'I', '\\u012e': 'I', '\\u0130': 'I',\n '\\u0129': 'i', '\\u012b': 'i', '\\u012d': 'i', '\\u012f': 'i', '\\u0131': 'i',\n '\\u0134': 'J', '\\u0135': 'j',\n '\\u0136': 'K', '\\u0137': 'k', '\\u0138': 'k',\n '\\u0139': 'L', '\\u013b': 'L', '\\u013d': 'L', '\\u013f': 'L', '\\u0141': 'L',\n '\\u013a': 'l', '\\u013c': 'l', '\\u013e': 'l', '\\u0140': 'l', '\\u0142': 'l',\n '\\u0143': 'N', '\\u0145': 'N', '\\u0147': 'N', '\\u014a': 'N',\n '\\u0144': 'n', '\\u0146': 'n', '\\u0148': 'n', '\\u014b': 'n',\n '\\u014c': 'O', '\\u014e': 'O', '\\u0150': 'O',\n '\\u014d': 'o', '\\u014f': 'o', '\\u0151': 'o',\n '\\u0154': 'R', '\\u0156': 'R', '\\u0158': 'R',\n '\\u0155': 'r', '\\u0157': 'r', '\\u0159': 'r',\n '\\u015a': 'S', '\\u015c': 'S', '\\u015e': 'S', '\\u0160': 'S',\n '\\u015b': 's', '\\u015d': 's', '\\u015f': 's', '\\u0161': 's',\n '\\u0162': 'T', '\\u0164': 'T', '\\u0166': 'T',\n '\\u0163': 't', '\\u0165': 't', '\\u0167': 't',\n '\\u0168': 'U', '\\u016a': 'U', '\\u016c': 'U', '\\u016e': 'U', '\\u0170': 'U', '\\u0172': 'U',\n '\\u0169': 'u', '\\u016b': 'u', '\\u016d': 'u', '\\u016f': 'u', '\\u0171': 'u', '\\u0173': 'u',\n '\\u0174': 'W', '\\u0175': 'w',\n '\\u0176': 'Y', '\\u0177': 'y', '\\u0178': 'Y',\n '\\u0179': 'Z', '\\u017b': 'Z', '\\u017d': 'Z',\n '\\u017a': 'z', '\\u017c': 'z', '\\u017e': 'z',\n '\\u0132': 'IJ', '\\u0133': 'ij',\n '\\u0152': 'Oe', '\\u0153': 'oe',\n '\\u0149': \"'n\", '\\u017f': 's'\n };\n\n /** Used to map characters to HTML entities. */\n var htmlEscapes = {\n '&': '&',\n '<': '<',\n '>': '>',\n '\"': '"',\n \"'\": '''\n };\n\n /** Used to map HTML entities to characters. */\n var htmlUnescapes = {\n '&': '&',\n '<': '<',\n '>': '>',\n '"': '\"',\n ''': \"'\"\n };\n\n /** Used to escape characters for inclusion in compiled string literals. */\n var stringEscapes = {\n '\\\\': '\\\\',\n \"'\": \"'\",\n '\\n': 'n',\n '\\r': 'r',\n '\\u2028': 'u2028',\n '\\u2029': 'u2029'\n };\n\n /** Built-in method references without a dependency on `root`. */\n var freeParseFloat = parseFloat,\n freeParseInt = parseInt;\n\n /** Detect free variable `global` from Node.js. */\n var freeGlobal = typeof global == 'object' && global && global.Object === Object && global;\n\n /** Detect free variable `self`. */\n var freeSelf = typeof self == 'object' && self && self.Object === Object && self;\n\n /** Used as a reference to the global object. */\n var root = freeGlobal || freeSelf || Function('return this')();\n\n /** Detect free variable `exports`. */\n var freeExports = typeof exports == 'object' && exports && !exports.nodeType && exports;\n\n /** Detect free variable `module`. */\n var freeModule = freeExports && typeof module == 'object' && module && !module.nodeType && module;\n\n /** Detect the popular CommonJS extension `module.exports`. */\n var moduleExports = freeModule && freeModule.exports === freeExports;\n\n /** Detect free variable `process` from Node.js. */\n var freeProcess = moduleExports && freeGlobal.process;\n\n /** Used to access faster Node.js helpers. */\n var nodeUtil = (function() {\n try {\n // Use `util.types` for Node.js 10+.\n var types = freeModule && freeModule.require && freeModule.require('util').types;\n\n if (types) {\n return types;\n }\n\n // Legacy `process.binding('util')` for Node.js < 10.\n return freeProcess && freeProcess.binding && freeProcess.binding('util');\n } catch (e) {}\n }());\n\n /* Node.js helper references. */\n var nodeIsArrayBuffer = nodeUtil && nodeUtil.isArrayBuffer,\n nodeIsDate = nodeUtil && nodeUtil.isDate,\n nodeIsMap = nodeUtil && nodeUtil.isMap,\n nodeIsRegExp = nodeUtil && nodeUtil.isRegExp,\n nodeIsSet = nodeUtil && nodeUtil.isSet,\n nodeIsTypedArray = nodeUtil && nodeUtil.isTypedArray;\n\n /*--------------------------------------------------------------------------*/\n\n /**\n * A faster alternative to `Function#apply`, this function invokes `func`\n * with the `this` binding of `thisArg` and the arguments of `args`.\n *\n * @private\n * @param {Function} func The function to invoke.\n * @param {*} thisArg The `this` binding of `func`.\n * @param {Array} args The arguments to invoke `func` with.\n * @returns {*} Returns the result of `func`.\n */\n function apply(func, thisArg, args) {\n switch (args.length) {\n case 0: return func.call(thisArg);\n case 1: return func.call(thisArg, args[0]);\n case 2: return func.call(thisArg, args[0], args[1]);\n case 3: return func.call(thisArg, args[0], args[1], args[2]);\n }\n return func.apply(thisArg, args);\n }\n\n /**\n * A specialized version of `baseAggregator` for arrays.\n *\n * @private\n * @param {Array} [array] The array to iterate over.\n * @param {Function} setter The function to set `accumulator` values.\n * @param {Function} iteratee The iteratee to transform keys.\n * @param {Object} accumulator The initial aggregated object.\n * @returns {Function} Returns `accumulator`.\n */\n function arrayAggregator(array, setter, iteratee, accumulator) {\n var index = -1,\n length = array == null ? 0 : array.length;\n\n while (++index < length) {\n var value = array[index];\n setter(accumulator, value, iteratee(value), array);\n }\n return accumulator;\n }\n\n /**\n * A specialized version of `_.forEach` for arrays without support for\n * iteratee shorthands.\n *\n * @private\n * @param {Array} [array] The array to iterate over.\n * @param {Function} iteratee The function invoked per iteration.\n * @returns {Array} Returns `array`.\n */\n function arrayEach(array, iteratee) {\n var index = -1,\n length = array == null ? 0 : array.length;\n\n while (++index < length) {\n if (iteratee(array[index], index, array) === false) {\n break;\n }\n }\n return array;\n }\n\n /**\n * A specialized version of `_.forEachRight` for arrays without support for\n * iteratee shorthands.\n *\n * @private\n * @param {Array} [array] The array to iterate over.\n * @param {Function} iteratee The function invoked per iteration.\n * @returns {Array} Returns `array`.\n */\n function arrayEachRight(array, iteratee) {\n var length = array == null ? 0 : array.length;\n\n while (length--) {\n if (iteratee(array[length], length, array) === false) {\n break;\n }\n }\n return array;\n }\n\n /**\n * A specialized version of `_.every` for arrays without support for\n * iteratee shorthands.\n *\n * @private\n * @param {Array} [array] The array to iterate over.\n * @param {Function} predicate The function invoked per iteration.\n * @returns {boolean} Returns `true` if all elements pass the predicate check,\n * else `false`.\n */\n function arrayEvery(array, predicate) {\n var index = -1,\n length = array == null ? 0 : array.length;\n\n while (++index < length) {\n if (!predicate(array[index], index, array)) {\n return false;\n }\n }\n return true;\n }\n\n /**\n * A specialized version of `_.filter` for arrays without support for\n * iteratee shorthands.\n *\n * @private\n * @param {Array} [array] The array to iterate over.\n * @param {Function} predicate The function invoked per iteration.\n * @returns {Array} Returns the new filtered array.\n */\n function arrayFilter(array, predicate) {\n var index = -1,\n length = array == null ? 0 : array.length,\n resIndex = 0,\n result = [];\n\n while (++index < length) {\n var value = array[index];\n if (predicate(value, index, array)) {\n result[resIndex++] = value;\n }\n }\n return result;\n }\n\n /**\n * A specialized version of `_.includes` for arrays without support for\n * specifying an index to search from.\n *\n * @private\n * @param {Array} [array] The array to inspect.\n * @param {*} target The value to search for.\n * @returns {boolean} Returns `true` if `target` is found, else `false`.\n */\n function arrayIncludes(array, value) {\n var length = array == null ? 0 : array.length;\n return !!length && baseIndexOf(array, value, 0) > -1;\n }\n\n /**\n * This function is like `arrayIncludes` except that it accepts a comparator.\n *\n * @private\n * @param {Array} [array] The array to inspect.\n * @param {*} target The value to search for.\n * @param {Function} comparator The comparator invoked per element.\n * @returns {boolean} Returns `true` if `target` is found, else `false`.\n */\n function arrayIncludesWith(array, value, comparator) {\n var index = -1,\n length = array == null ? 0 : array.length;\n\n while (++index < length) {\n if (comparator(value, array[index])) {\n return true;\n }\n }\n return false;\n }\n\n /**\n * A specialized version of `_.map` for arrays without support for iteratee\n * shorthands.\n *\n * @private\n * @param {Array} [array] The array to iterate over.\n * @param {Function} iteratee The function invoked per iteration.\n * @returns {Array} Returns the new mapped array.\n */\n function arrayMap(array, iteratee) {\n var index = -1,\n length = array == null ? 0 : array.length,\n result = Array(length);\n\n while (++index < length) {\n result[index] = iteratee(array[index], index, array);\n }\n return result;\n }\n\n /**\n * Appends the elements of `values` to `array`.\n *\n * @private\n * @param {Array} array The array to modify.\n * @param {Array} values The values to append.\n * @returns {Array} Returns `array`.\n */\n function arrayPush(array, values) {\n var index = -1,\n length = values.length,\n offset = array.length;\n\n while (++index < length) {\n array[offset + index] = values[index];\n }\n return array;\n }\n\n /**\n * A specialized version of `_.reduce` for arrays without support for\n * iteratee shorthands.\n *\n * @private\n * @param {Array} [array] The array to iterate over.\n * @param {Function} iteratee The function invoked per iteration.\n * @param {*} [accumulator] The initial value.\n * @param {boolean} [initAccum] Specify using the first element of `array` as\n * the initial value.\n * @returns {*} Returns the accumulated value.\n */\n function arrayReduce(array, iteratee, accumulator, initAccum) {\n var index = -1,\n length = array == null ? 0 : array.length;\n\n if (initAccum && length) {\n accumulator = array[++index];\n }\n while (++index < length) {\n accumulator = iteratee(accumulator, array[index], index, array);\n }\n return accumulator;\n }\n\n /**\n * A specialized version of `_.reduceRight` for arrays without support for\n * iteratee shorthands.\n *\n * @private\n * @param {Array} [array] The array to iterate over.\n * @param {Function} iteratee The function invoked per iteration.\n * @param {*} [accumulator] The initial value.\n * @param {boolean} [initAccum] Specify using the last element of `array` as\n * the initial value.\n * @returns {*} Returns the accumulated value.\n */\n function arrayReduceRight(array, iteratee, accumulator, initAccum) {\n var length = array == null ? 0 : array.length;\n if (initAccum && length) {\n accumulator = array[--length];\n }\n while (length--) {\n accumulator = iteratee(accumulator, array[length], length, array);\n }\n return accumulator;\n }\n\n /**\n * A specialized version of `_.some` for arrays without support for iteratee\n * shorthands.\n *\n * @private\n * @param {Array} [array] The array to iterate over.\n * @param {Function} predicate The function invoked per iteration.\n * @returns {boolean} Returns `true` if any element passes the predicate check,\n * else `false`.\n */\n function arraySome(array, predicate) {\n var index = -1,\n length = array == null ? 0 : array.length;\n\n while (++index < length) {\n if (predicate(array[index], index, array)) {\n return true;\n }\n }\n return false;\n }\n\n /**\n * Gets the size of an ASCII `string`.\n *\n * @private\n * @param {string} string The string inspect.\n * @returns {number} Returns the string size.\n */\n var asciiSize = baseProperty('length');\n\n /**\n * Converts an ASCII `string` to an array.\n *\n * @private\n * @param {string} string The string to convert.\n * @returns {Array} Returns the converted array.\n */\n function asciiToArray(string) {\n return string.split('');\n }\n\n /**\n * Splits an ASCII `string` into an array of its words.\n *\n * @private\n * @param {string} The string to inspect.\n * @returns {Array} Returns the words of `string`.\n */\n function asciiWords(string) {\n return string.match(reAsciiWord) || [];\n }\n\n /**\n * The base implementation of methods like `_.findKey` and `_.findLastKey`,\n * without support for iteratee shorthands, which iterates over `collection`\n * using `eachFunc`.\n *\n * @private\n * @param {Array|Object} collection The collection to inspect.\n * @param {Function} predicate The function invoked per iteration.\n * @param {Function} eachFunc The function to iterate over `collection`.\n * @returns {*} Returns the found element or its key, else `undefined`.\n */\n function baseFindKey(collection, predicate, eachFunc) {\n var result;\n eachFunc(collection, function(value, key, collection) {\n if (predicate(value, key, collection)) {\n result = key;\n return false;\n }\n });\n return result;\n }\n\n /**\n * The base implementation of `_.findIndex` and `_.findLastIndex` without\n * support for iteratee shorthands.\n *\n * @private\n * @param {Array} array The array to inspect.\n * @param {Function} predicate The function invoked per iteration.\n * @param {number} fromIndex The index to search from.\n * @param {boolean} [fromRight] Specify iterating from right to left.\n * @returns {number} Returns the index of the matched value, else `-1`.\n */\n function baseFindIndex(array, predicate, fromIndex, fromRight) {\n var length = array.length,\n index = fromIndex + (fromRight ? 1 : -1);\n\n while ((fromRight ? index-- : ++index < length)) {\n if (predicate(array[index], index, array)) {\n return index;\n }\n }\n return -1;\n }\n\n /**\n * The base implementation of `_.indexOf` without `fromIndex` bounds checks.\n *\n * @private\n * @param {Array} array The array to inspect.\n * @param {*} value The value to search for.\n * @param {number} fromIndex The index to search from.\n * @returns {number} Returns the index of the matched value, else `-1`.\n */\n function baseIndexOf(array, value, fromIndex) {\n return value === value\n ? strictIndexOf(array, value, fromIndex)\n : baseFindIndex(array, baseIsNaN, fromIndex);\n }\n\n /**\n * This function is like `baseIndexOf` except that it accepts a comparator.\n *\n * @private\n * @param {Array} array The array to inspect.\n * @param {*} value The value to search for.\n * @param {number} fromIndex The index to search from.\n * @param {Function} comparator The comparator invoked per element.\n * @returns {number} Returns the index of the matched value, else `-1`.\n */\n function baseIndexOfWith(array, value, fromIndex, comparator) {\n var index = fromIndex - 1,\n length = array.length;\n\n while (++index < length) {\n if (comparator(array[index], value)) {\n return index;\n }\n }\n return -1;\n }\n\n /**\n * The base implementation of `_.isNaN` without support for number objects.\n *\n * @private\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is `NaN`, else `false`.\n */\n function baseIsNaN(value) {\n return value !== value;\n }\n\n /**\n * The base implementation of `_.mean` and `_.meanBy` without support for\n * iteratee shorthands.\n *\n * @private\n * @param {Array} array The array to iterate over.\n * @param {Function} iteratee The function invoked per iteration.\n * @returns {number} Returns the mean.\n */\n function baseMean(array, iteratee) {\n var length = array == null ? 0 : array.length;\n return length ? (baseSum(array, iteratee) / length) : NAN;\n }\n\n /**\n * The base implementation of `_.property` without support for deep paths.\n *\n * @private\n * @param {string} key The key of the property to get.\n * @returns {Function} Returns the new accessor function.\n */\n function baseProperty(key) {\n return function(object) {\n return object == null ? undefined : object[key];\n };\n }\n\n /**\n * The base implementation of `_.propertyOf` without support for deep paths.\n *\n * @private\n * @param {Object} object The object to query.\n * @returns {Function} Returns the new accessor function.\n */\n function basePropertyOf(object) {\n return function(key) {\n return object == null ? undefined : object[key];\n };\n }\n\n /**\n * The base implementation of `_.reduce` and `_.reduceRight`, without support\n * for iteratee shorthands, which iterates over `collection` using `eachFunc`.\n *\n * @private\n * @param {Array|Object} collection The collection to iterate over.\n * @param {Function} iteratee The function invoked per iteration.\n * @param {*} accumulator The initial value.\n * @param {boolean} initAccum Specify using the first or last element of\n * `collection` as the initial value.\n * @param {Function} eachFunc The function to iterate over `collection`.\n * @returns {*} Returns the accumulated value.\n */\n function baseReduce(collection, iteratee, accumulator, initAccum, eachFunc) {\n eachFunc(collection, function(value, index, collection) {\n accumulator = initAccum\n ? (initAccum = false, value)\n : iteratee(accumulator, value, index, collection);\n });\n return accumulator;\n }\n\n /**\n * The base implementation of `_.sortBy` which uses `comparer` to define the\n * sort order of `array` and replaces criteria objects with their corresponding\n * values.\n *\n * @private\n * @param {Array} array The array to sort.\n * @param {Function} comparer The function to define sort order.\n * @returns {Array} Returns `array`.\n */\n function baseSortBy(array, comparer) {\n var length = array.length;\n\n array.sort(comparer);\n while (length--) {\n array[length] = array[length].value;\n }\n return array;\n }\n\n /**\n * The base implementation of `_.sum` and `_.sumBy` without support for\n * iteratee shorthands.\n *\n * @private\n * @param {Array} array The array to iterate over.\n * @param {Function} iteratee The function invoked per iteration.\n * @returns {number} Returns the sum.\n */\n function baseSum(array, iteratee) {\n var result,\n index = -1,\n length = array.length;\n\n while (++index < length) {\n var current = iteratee(array[index]);\n if (current !== undefined) {\n result = result === undefined ? current : (result + current);\n }\n }\n return result;\n }\n\n /**\n * The base implementation of `_.times` without support for iteratee shorthands\n * or max array length checks.\n *\n * @private\n * @param {number} n The number of times to invoke `iteratee`.\n * @param {Function} iteratee The function invoked per iteration.\n * @returns {Array} Returns the array of results.\n */\n function baseTimes(n, iteratee) {\n var index = -1,\n result = Array(n);\n\n while (++index < n) {\n result[index] = iteratee(index);\n }\n return result;\n }\n\n /**\n * The base implementation of `_.toPairs` and `_.toPairsIn` which creates an array\n * of key-value pairs for `object` corresponding to the property names of `props`.\n *\n * @private\n * @param {Object} object The object to query.\n * @param {Array} props The property names to get values for.\n * @returns {Object} Returns the key-value pairs.\n */\n function baseToPairs(object, props) {\n return arrayMap(props, function(key) {\n return [key, object[key]];\n });\n }\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 */\n function baseTrim(string) {\n return string\n ? string.slice(0, trimmedEndIndex(string) + 1).replace(reTrimStart, '')\n : string;\n }\n\n /**\n * The base implementation of `_.unary` without support for storing metadata.\n *\n * @private\n * @param {Function} func The function to cap arguments for.\n * @returns {Function} Returns the new capped function.\n */\n function baseUnary(func) {\n return function(value) {\n return func(value);\n };\n }\n\n /**\n * The base implementation of `_.values` and `_.valuesIn` which creates an\n * array of `object` property values corresponding to the property names\n * of `props`.\n *\n * @private\n * @param {Object} object The object to query.\n * @param {Array} props The property names to get values for.\n * @returns {Object} Returns the array of property values.\n */\n function baseValues(object, props) {\n return arrayMap(props, function(key) {\n return object[key];\n });\n }\n\n /**\n * Checks if a `cache` value for `key` exists.\n *\n * @private\n * @param {Object} cache The cache to query.\n * @param {string} key The key of the entry to check.\n * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`.\n */\n function cacheHas(cache, key) {\n return cache.has(key);\n }\n\n /**\n * Used by `_.trim` and `_.trimStart` to get the index of the first string symbol\n * that is not found in the character symbols.\n *\n * @private\n * @param {Array} strSymbols The string symbols to inspect.\n * @param {Array} chrSymbols The character symbols to find.\n * @returns {number} Returns the index of the first unmatched string symbol.\n */\n function charsStartIndex(strSymbols, chrSymbols) {\n var index = -1,\n length = strSymbols.length;\n\n while (++index < length && baseIndexOf(chrSymbols, strSymbols[index], 0) > -1) {}\n return index;\n }\n\n /**\n * Used by `_.trim` and `_.trimEnd` to get the index of the last string symbol\n * that is not found in the character symbols.\n *\n * @private\n * @param {Array} strSymbols The string symbols to inspect.\n * @param {Array} chrSymbols The character symbols to find.\n * @returns {number} Returns the index of the last unmatched string symbol.\n */\n function charsEndIndex(strSymbols, chrSymbols) {\n var index = strSymbols.length;\n\n while (index-- && baseIndexOf(chrSymbols, strSymbols[index], 0) > -1) {}\n return index;\n }\n\n /**\n * Gets the number of `placeholder` occurrences in `array`.\n *\n * @private\n * @param {Array} array The array to inspect.\n * @param {*} placeholder The placeholder to search for.\n * @returns {number} Returns the placeholder count.\n */\n function countHolders(array, placeholder) {\n var length = array.length,\n result = 0;\n\n while (length--) {\n if (array[length] === placeholder) {\n ++result;\n }\n }\n return result;\n }\n\n /**\n * Used by `_.deburr` to convert Latin-1 Supplement and Latin Extended-A\n * letters to basic Latin letters.\n *\n * @private\n * @param {string} letter The matched letter to deburr.\n * @returns {string} Returns the deburred letter.\n */\n var deburrLetter = basePropertyOf(deburredLetters);\n\n /**\n * Used by `_.escape` to convert characters to HTML entities.\n *\n * @private\n * @param {string} chr The matched character to escape.\n * @returns {string} Returns the escaped character.\n */\n var escapeHtmlChar = basePropertyOf(htmlEscapes);\n\n /**\n * Used by `_.template` to escape characters for inclusion in compiled string literals.\n *\n * @private\n * @param {string} chr The matched character to escape.\n * @returns {string} Returns the escaped character.\n */\n function escapeStringChar(chr) {\n return '\\\\' + stringEscapes[chr];\n }\n\n /**\n * Gets the value at `key` of `object`.\n *\n * @private\n * @param {Object} [object] The object to query.\n * @param {string} key The key of the property to get.\n * @returns {*} Returns the property value.\n */\n function getValue(object, key) {\n return object == null ? undefined : object[key];\n }\n\n /**\n * Checks if `string` contains Unicode symbols.\n *\n * @private\n * @param {string} string The string to inspect.\n * @returns {boolean} Returns `true` if a symbol is found, else `false`.\n */\n function hasUnicode(string) {\n return reHasUnicode.test(string);\n }\n\n /**\n * Checks if `string` contains a word composed of Unicode symbols.\n *\n * @private\n * @param {string} string The string to inspect.\n * @returns {boolean} Returns `true` if a word is found, else `false`.\n */\n function hasUnicodeWord(string) {\n return reHasUnicodeWord.test(string);\n }\n\n /**\n * Converts `iterator` to an array.\n *\n * @private\n * @param {Object} iterator The iterator to convert.\n * @returns {Array} Returns the converted array.\n */\n function iteratorToArray(iterator) {\n var data,\n result = [];\n\n while (!(data = iterator.next()).done) {\n result.push(data.value);\n }\n return result;\n }\n\n /**\n * Converts `map` to its key-value pairs.\n *\n * @private\n * @param {Object} map The map to convert.\n * @returns {Array} Returns the key-value pairs.\n */\n function mapToArray(map) {\n var index = -1,\n result = Array(map.size);\n\n map.forEach(function(value, key) {\n result[++index] = [key, value];\n });\n return result;\n }\n\n /**\n * Creates a unary function that invokes `func` with its argument transformed.\n *\n * @private\n * @param {Function} func The function to wrap.\n * @param {Function} transform The argument transform.\n * @returns {Function} Returns the new function.\n */\n function overArg(func, transform) {\n return function(arg) {\n return func(transform(arg));\n };\n }\n\n /**\n * Replaces all `placeholder` elements in `array` with an internal placeholder\n * and returns an array of their indexes.\n *\n * @private\n * @param {Array} array The array to modify.\n * @param {*} placeholder The placeholder to replace.\n * @returns {Array} Returns the new array of placeholder indexes.\n */\n function replaceHolders(array, placeholder) {\n var index = -1,\n length = array.length,\n resIndex = 0,\n result = [];\n\n while (++index < length) {\n var value = array[index];\n if (value === placeholder || value === PLACEHOLDER) {\n array[index] = PLACEHOLDER;\n result[resIndex++] = index;\n }\n }\n return result;\n }\n\n /**\n * Converts `set` to an array of its values.\n *\n * @private\n * @param {Object} set The set to convert.\n * @returns {Array} Returns the values.\n */\n function setToArray(set) {\n var index = -1,\n result = Array(set.size);\n\n set.forEach(function(value) {\n result[++index] = value;\n });\n return result;\n }\n\n /**\n * Converts `set` to its value-value pairs.\n *\n * @private\n * @param {Object} set The set to convert.\n * @returns {Array} Returns the value-value pairs.\n */\n function setToPairs(set) {\n var index = -1,\n result = Array(set.size);\n\n set.forEach(function(value) {\n result[++index] = [value, value];\n });\n return result;\n }\n\n /**\n * A specialized version of `_.indexOf` which performs strict equality\n * comparisons of values, i.e. `===`.\n *\n * @private\n * @param {Array} array The array to inspect.\n * @param {*} value The value to search for.\n * @param {number} fromIndex The index to search from.\n * @returns {number} Returns the index of the matched value, else `-1`.\n */\n function strictIndexOf(array, value, fromIndex) {\n var index = fromIndex - 1,\n length = array.length;\n\n while (++index < length) {\n if (array[index] === value) {\n return index;\n }\n }\n return -1;\n }\n\n /**\n * A specialized version of `_.lastIndexOf` which performs strict equality\n * comparisons of values, i.e. `===`.\n *\n * @private\n * @param {Array} array The array to inspect.\n * @param {*} value The value to search for.\n * @param {number} fromIndex The index to search from.\n * @returns {number} Returns the index of the matched value, else `-1`.\n */\n function strictLastIndexOf(array, value, fromIndex) {\n var index = fromIndex + 1;\n while (index--) {\n if (array[index] === value) {\n return index;\n }\n }\n return index;\n }\n\n /**\n * Gets the number of symbols in `string`.\n *\n * @private\n * @param {string} string The string to inspect.\n * @returns {number} Returns the string size.\n */\n function stringSize(string) {\n return hasUnicode(string)\n ? unicodeSize(string)\n : asciiSize(string);\n }\n\n /**\n * Converts `string` to an array.\n *\n * @private\n * @param {string} string The string to convert.\n * @returns {Array} Returns the converted array.\n */\n function stringToArray(string) {\n return hasUnicode(string)\n ? unicodeToArray(string)\n : asciiToArray(string);\n }\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 */\n function trimmedEndIndex(string) {\n var index = string.length;\n\n while (index-- && reWhitespace.test(string.charAt(index))) {}\n return index;\n }\n\n /**\n * Used by `_.unescape` to convert HTML entities to characters.\n *\n * @private\n * @param {string} chr The matched character to unescape.\n * @returns {string} Returns the unescaped character.\n */\n var unescapeHtmlChar = basePropertyOf(htmlUnescapes);\n\n /**\n * Gets the size of a Unicode `string`.\n *\n * @private\n * @param {string} string The string inspect.\n * @returns {number} Returns the string size.\n */\n function unicodeSize(string) {\n var result = reUnicode.lastIndex = 0;\n while (reUnicode.test(string)) {\n ++result;\n }\n return result;\n }\n\n /**\n * Converts a Unicode `string` to an array.\n *\n * @private\n * @param {string} string The string to convert.\n * @returns {Array} Returns the converted array.\n */\n function unicodeToArray(string) {\n return string.match(reUnicode) || [];\n }\n\n /**\n * Splits a Unicode `string` into an array of its words.\n *\n * @private\n * @param {string} The string to inspect.\n * @returns {Array} Returns the words of `string`.\n */\n function unicodeWords(string) {\n return string.match(reUnicodeWord) || [];\n }\n\n /*--------------------------------------------------------------------------*/\n\n /**\n * Create a new pristine `lodash` function using the `context` object.\n *\n * @static\n * @memberOf _\n * @since 1.1.0\n * @category Util\n * @param {Object} [context=root] The context object.\n * @returns {Function} Returns a new `lodash` function.\n * @example\n *\n * _.mixin({ 'foo': _.constant('foo') });\n *\n * var lodash = _.runInContext();\n * lodash.mixin({ 'bar': lodash.constant('bar') });\n *\n * _.isFunction(_.foo);\n * // => true\n * _.isFunction(_.bar);\n * // => false\n *\n * lodash.isFunction(lodash.foo);\n * // => false\n * lodash.isFunction(lodash.bar);\n * // => true\n *\n * // Create a suped-up `defer` in Node.js.\n * var defer = _.runInContext({ 'setTimeout': setImmediate }).defer;\n */\n var runInContext = (function runInContext(context) {\n context = context == null ? root : _.defaults(root.Object(), context, _.pick(root, contextProps));\n\n /** Built-in constructor references. */\n var Array = context.Array,\n Date = context.Date,\n Error = context.Error,\n Function = context.Function,\n Math = context.Math,\n Object = context.Object,\n RegExp = context.RegExp,\n String = context.String,\n TypeError = context.TypeError;\n\n /** Used for built-in method references. */\n var arrayProto = Array.prototype,\n funcProto = Function.prototype,\n objectProto = Object.prototype;\n\n /** Used to detect overreaching core-js shims. */\n var coreJsData = context['__core-js_shared__'];\n\n /** Used to resolve the decompiled source of functions. */\n var funcToString = funcProto.toString;\n\n /** Used to check objects for own properties. */\n var hasOwnProperty = objectProto.hasOwnProperty;\n\n /** Used to generate unique IDs. */\n var idCounter = 0;\n\n /** Used to detect methods masquerading as native. */\n var maskSrcKey = (function() {\n var uid = /[^.]+$/.exec(coreJsData && coreJsData.keys && coreJsData.keys.IE_PROTO || '');\n return uid ? ('Symbol(src)_1.' + uid) : '';\n }());\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 */\n var nativeObjectToString = objectProto.toString;\n\n /** Used to infer the `Object` constructor. */\n var objectCtorString = funcToString.call(Object);\n\n /** Used to restore the original `_` reference in `_.noConflict`. */\n var oldDash = root._;\n\n /** Used to detect if a method is native. */\n var reIsNative = RegExp('^' +\n funcToString.call(hasOwnProperty).replace(reRegExpChar, '\\\\$&')\n .replace(/hasOwnProperty|(function).*?(?=\\\\\\()| for .+?(?=\\\\\\])/g, '$1.*?') + '$'\n );\n\n /** Built-in value references. */\n var Buffer = moduleExports ? context.Buffer : undefined,\n Symbol = context.Symbol,\n Uint8Array = context.Uint8Array,\n allocUnsafe = Buffer ? Buffer.allocUnsafe : undefined,\n getPrototype = overArg(Object.getPrototypeOf, Object),\n objectCreate = Object.create,\n propertyIsEnumerable = objectProto.propertyIsEnumerable,\n splice = arrayProto.splice,\n spreadableSymbol = Symbol ? Symbol.isConcatSpreadable : undefined,\n symIterator = Symbol ? Symbol.iterator : undefined,\n symToStringTag = Symbol ? Symbol.toStringTag : undefined;\n\n var defineProperty = (function() {\n try {\n var func = getNative(Object, 'defineProperty');\n func({}, '', {});\n return func;\n } catch (e) {}\n }());\n\n /** Mocked built-ins. */\n var ctxClearTimeout = context.clearTimeout !== root.clearTimeout && context.clearTimeout,\n ctxNow = Date && Date.now !== root.Date.now && Date.now,\n ctxSetTimeout = context.setTimeout !== root.setTimeout && context.setTimeout;\n\n /* Built-in method references for those with the same name as other `lodash` methods. */\n var nativeCeil = Math.ceil,\n nativeFloor = Math.floor,\n nativeGetSymbols = Object.getOwnPropertySymbols,\n nativeIsBuffer = Buffer ? Buffer.isBuffer : undefined,\n nativeIsFinite = context.isFinite,\n nativeJoin = arrayProto.join,\n nativeKeys = overArg(Object.keys, Object),\n nativeMax = Math.max,\n nativeMin = Math.min,\n nativeNow = Date.now,\n nativeParseInt = context.parseInt,\n nativeRandom = Math.random,\n nativeReverse = arrayProto.reverse;\n\n /* Built-in method references that are verified to be native. */\n var DataView = getNative(context, 'DataView'),\n Map = getNative(context, 'Map'),\n Promise = getNative(context, 'Promise'),\n Set = getNative(context, 'Set'),\n WeakMap = getNative(context, 'WeakMap'),\n nativeCreate = getNative(Object, 'create');\n\n /** Used to store function metadata. */\n var metaMap = WeakMap && new WeakMap;\n\n /** Used to lookup unminified function names. */\n var realNames = {};\n\n /** Used to detect maps, sets, and weakmaps. */\n var dataViewCtorString = toSource(DataView),\n mapCtorString = toSource(Map),\n promiseCtorString = toSource(Promise),\n setCtorString = toSource(Set),\n weakMapCtorString = toSource(WeakMap);\n\n /** Used to convert symbols to primitives and strings. */\n var symbolProto = Symbol ? Symbol.prototype : undefined,\n symbolValueOf = symbolProto ? symbolProto.valueOf : undefined,\n symbolToString = symbolProto ? symbolProto.toString : undefined;\n\n /*------------------------------------------------------------------------*/\n\n /**\n * Creates a `lodash` object which wraps `value` to enable implicit method\n * chain sequences. Methods that operate on and return arrays, collections,\n * and functions can be chained together. Methods that retrieve a single value\n * or may return a primitive value will automatically end the chain sequence\n * and return the unwrapped value. Otherwise, the value must be unwrapped\n * with `_#value`.\n *\n * Explicit chain sequences, which must be unwrapped with `_#value`, may be\n * enabled using `_.chain`.\n *\n * The execution of chained methods is lazy, that is, it's deferred until\n * `_#value` is implicitly or explicitly called.\n *\n * Lazy evaluation allows several methods to support shortcut fusion.\n * Shortcut fusion is an optimization to merge iteratee calls; this avoids\n * the creation of intermediate arrays and can greatly reduce the number of\n * iteratee executions. Sections of a chain sequence qualify for shortcut\n * fusion if the section is applied to an array and iteratees accept only\n * one argument. The heuristic for whether a section qualifies for shortcut\n * fusion is subject to change.\n *\n * Chaining is supported in custom builds as long as the `_#value` method is\n * directly or indirectly included in the build.\n *\n * In addition to lodash methods, wrappers have `Array` and `String` methods.\n *\n * The wrapper `Array` methods are:\n * `concat`, `join`, `pop`, `push`, `shift`, `sort`, `splice`, and `unshift`\n *\n * The wrapper `String` methods are:\n * `replace` and `split`\n *\n * The wrapper methods that support shortcut fusion are:\n * `at`, `compact`, `drop`, `dropRight`, `dropWhile`, `filter`, `find`,\n * `findLast`, `head`, `initial`, `last`, `map`, `reject`, `reverse`, `slice`,\n * `tail`, `take`, `takeRight`, `takeRightWhile`, `takeWhile`, and `toArray`\n *\n * The chainable wrapper methods are:\n * `after`, `ary`, `assign`, `assignIn`, `assignInWith`, `assignWith`, `at`,\n * `before`, `bind`, `bindAll`, `bindKey`, `castArray`, `chain`, `chunk`,\n * `commit`, `compact`, `concat`, `conforms`, `constant`, `countBy`, `create`,\n * `curry`, `debounce`, `defaults`, `defaultsDeep`, `defer`, `delay`,\n * `difference`, `differenceBy`, `differenceWith`, `drop`, `dropRight`,\n * `dropRightWhile`, `dropWhile`, `extend`, `extendWith`, `fill`, `filter`,\n * `flatMap`, `flatMapDeep`, `flatMapDepth`, `flatten`, `flattenDeep`,\n * `flattenDepth`, `flip`, `flow`, `flowRight`, `fromPairs`, `functions`,\n * `functionsIn`, `groupBy`, `initial`, `intersection`, `intersectionBy`,\n * `intersectionWith`, `invert`, `invertBy`, `invokeMap`, `iteratee`, `keyBy`,\n * `keys`, `keysIn`, `map`, `mapKeys`, `mapValues`, `matches`, `matchesProperty`,\n * `memoize`, `merge`, `mergeWith`, `method`, `methodOf`, `mixin`, `negate`,\n * `nthArg`, `omit`, `omitBy`, `once`, `orderBy`, `over`, `overArgs`,\n * `overEvery`, `overSome`, `partial`, `partialRight`, `partition`, `pick`,\n * `pickBy`, `plant`, `property`, `propertyOf`, `pull`, `pullAll`, `pullAllBy`,\n * `pullAllWith`, `pullAt`, `push`, `range`, `rangeRight`, `rearg`, `reject`,\n * `remove`, `rest`, `reverse`, `sampleSize`, `set`, `setWith`, `shuffle`,\n * `slice`, `sort`, `sortBy`, `splice`, `spread`, `tail`, `take`, `takeRight`,\n * `takeRightWhile`, `takeWhile`, `tap`, `throttle`, `thru`, `toArray`,\n * `toPairs`, `toPairsIn`, `toPath`, `toPlainObject`, `transform`, `unary`,\n * `union`, `unionBy`, `unionWith`, `uniq`, `uniqBy`, `uniqWith`, `unset`,\n * `unshift`, `unzip`, `unzipWith`, `update`, `updateWith`, `values`,\n * `valuesIn`, `without`, `wrap`, `xor`, `xorBy`, `xorWith`, `zip`,\n * `zipObject`, `zipObjectDeep`, and `zipWith`\n *\n * The wrapper methods that are **not** chainable by default are:\n * `add`, `attempt`, `camelCase`, `capitalize`, `ceil`, `clamp`, `clone`,\n * `cloneDeep`, `cloneDeepWith`, `cloneWith`, `conformsTo`, `deburr`,\n * `defaultTo`, `divide`, `each`, `eachRight`, `endsWith`, `eq`, `escape`,\n * `escapeRegExp`, `every`, `find`, `findIndex`, `findKey`, `findLast`,\n * `findLastIndex`, `findLastKey`, `first`, `floor`, `forEach`, `forEachRight`,\n * `forIn`, `forInRight`, `forOwn`, `forOwnRight`, `get`, `gt`, `gte`, `has`,\n * `hasIn`, `head`, `identity`, `includes`, `indexOf`, `inRange`, `invoke`,\n * `isArguments`, `isArray`, `isArrayBuffer`, `isArrayLike`, `isArrayLikeObject`,\n * `isBoolean`, `isBuffer`, `isDate`, `isElement`, `isEmpty`, `isEqual`,\n * `isEqualWith`, `isError`, `isFinite`, `isFunction`, `isInteger`, `isLength`,\n * `isMap`, `isMatch`, `isMatchWith`, `isNaN`, `isNative`, `isNil`, `isNull`,\n * `isNumber`, `isObject`, `isObjectLike`, `isPlainObject`, `isRegExp`,\n * `isSafeInteger`, `isSet`, `isString`, `isUndefined`, `isTypedArray`,\n * `isWeakMap`, `isWeakSet`, `join`, `kebabCase`, `last`, `lastIndexOf`,\n * `lowerCase`, `lowerFirst`, `lt`, `lte`, `max`, `maxBy`, `mean`, `meanBy`,\n * `min`, `minBy`, `multiply`, `noConflict`, `noop`, `now`, `nth`, `pad`,\n * `padEnd`, `padStart`, `parseInt`, `pop`, `random`, `reduce`, `reduceRight`,\n * `repeat`, `result`, `round`, `runInContext`, `sample`, `shift`, `size`,\n * `snakeCase`, `some`, `sortedIndex`, `sortedIndexBy`, `sortedLastIndex`,\n * `sortedLastIndexBy`, `startCase`, `startsWith`, `stubArray`, `stubFalse`,\n * `stubObject`, `stubString`, `stubTrue`, `subtract`, `sum`, `sumBy`,\n * `template`, `times`, `toFinite`, `toInteger`, `toJSON`, `toLength`,\n * `toLower`, `toNumber`, `toSafeInteger`, `toString`, `toUpper`, `trim`,\n * `trimEnd`, `trimStart`, `truncate`, `unescape`, `uniqueId`, `upperCase`,\n * `upperFirst`, `value`, and `words`\n *\n * @name _\n * @constructor\n * @category Seq\n * @param {*} value The value to wrap in a `lodash` instance.\n * @returns {Object} Returns the new `lodash` wrapper instance.\n * @example\n *\n * function square(n) {\n * return n * n;\n * }\n *\n * var wrapped = _([1, 2, 3]);\n *\n * // Returns an unwrapped value.\n * wrapped.reduce(_.add);\n * // => 6\n *\n * // Returns a wrapped value.\n * var squares = wrapped.map(square);\n *\n * _.isArray(squares);\n * // => false\n *\n * _.isArray(squares.value());\n * // => true\n */\n function lodash(value) {\n if (isObjectLike(value) && !isArray(value) && !(value instanceof LazyWrapper)) {\n if (value instanceof LodashWrapper) {\n return value;\n }\n if (hasOwnProperty.call(value, '__wrapped__')) {\n return wrapperClone(value);\n }\n }\n return new LodashWrapper(value);\n }\n\n /**\n * The base implementation of `_.create` without support for assigning\n * properties to the created object.\n *\n * @private\n * @param {Object} proto The object to inherit from.\n * @returns {Object} Returns the new object.\n */\n var baseCreate = (function() {\n function object() {}\n return function(proto) {\n if (!isObject(proto)) {\n return {};\n }\n if (objectCreate) {\n return objectCreate(proto);\n }\n object.prototype = proto;\n var result = new object;\n object.prototype = undefined;\n return result;\n };\n }());\n\n /**\n * The function whose prototype chain sequence wrappers inherit from.\n *\n * @private\n */\n function baseLodash() {\n // No operation performed.\n }\n\n /**\n * The base constructor for creating `lodash` wrapper objects.\n *\n * @private\n * @param {*} value The value to wrap.\n * @param {boolean} [chainAll] Enable explicit method chain sequences.\n */\n function LodashWrapper(value, chainAll) {\n this.__wrapped__ = value;\n this.__actions__ = [];\n this.__chain__ = !!chainAll;\n this.__index__ = 0;\n this.__values__ = undefined;\n }\n\n /**\n * By default, the template delimiters used by lodash are like those in\n * embedded Ruby (ERB) as well as ES2015 template strings. Change the\n * following template settings to use alternative delimiters.\n *\n * @static\n * @memberOf _\n * @type {Object}\n */\n lodash.templateSettings = {\n\n /**\n * Used to detect `data` property values to be HTML-escaped.\n *\n * @memberOf _.templateSettings\n * @type {RegExp}\n */\n 'escape': reEscape,\n\n /**\n * Used to detect code to be evaluated.\n *\n * @memberOf _.templateSettings\n * @type {RegExp}\n */\n 'evaluate': reEvaluate,\n\n /**\n * Used to detect `data` property values to inject.\n *\n * @memberOf _.templateSettings\n * @type {RegExp}\n */\n 'interpolate': reInterpolate,\n\n /**\n * Used to reference the data object in the template text.\n *\n * @memberOf _.templateSettings\n * @type {string}\n */\n 'variable': '',\n\n /**\n * Used to import variables into the compiled template.\n *\n * @memberOf _.templateSettings\n * @type {Object}\n */\n 'imports': {\n\n /**\n * A reference to the `lodash` function.\n *\n * @memberOf _.templateSettings.imports\n * @type {Function}\n */\n '_': lodash\n }\n };\n\n // Ensure wrappers are instances of `baseLodash`.\n lodash.prototype = baseLodash.prototype;\n lodash.prototype.constructor = lodash;\n\n LodashWrapper.prototype = baseCreate(baseLodash.prototype);\n LodashWrapper.prototype.constructor = LodashWrapper;\n\n /*------------------------------------------------------------------------*/\n\n /**\n * Creates a lazy wrapper object which wraps `value` to enable lazy evaluation.\n *\n * @private\n * @constructor\n * @param {*} value The value to wrap.\n */\n function LazyWrapper(value) {\n this.__wrapped__ = value;\n this.__actions__ = [];\n this.__dir__ = 1;\n this.__filtered__ = false;\n this.__iteratees__ = [];\n this.__takeCount__ = MAX_ARRAY_LENGTH;\n this.__views__ = [];\n }\n\n /**\n * Creates a clone of the lazy wrapper object.\n *\n * @private\n * @name clone\n * @memberOf LazyWrapper\n * @returns {Object} Returns the cloned `LazyWrapper` object.\n */\n function lazyClone() {\n var result = new LazyWrapper(this.__wrapped__);\n result.__actions__ = copyArray(this.__actions__);\n result.__dir__ = this.__dir__;\n result.__filtered__ = this.__filtered__;\n result.__iteratees__ = copyArray(this.__iteratees__);\n result.__takeCount__ = this.__takeCount__;\n result.__views__ = copyArray(this.__views__);\n return result;\n }\n\n /**\n * Reverses the direction of lazy iteration.\n *\n * @private\n * @name reverse\n * @memberOf LazyWrapper\n * @returns {Object} Returns the new reversed `LazyWrapper` object.\n */\n function lazyReverse() {\n if (this.__filtered__) {\n var result = new LazyWrapper(this);\n result.__dir__ = -1;\n result.__filtered__ = true;\n } else {\n result = this.clone();\n result.__dir__ *= -1;\n }\n return result;\n }\n\n /**\n * Extracts the unwrapped value from its lazy wrapper.\n *\n * @private\n * @name value\n * @memberOf LazyWrapper\n * @returns {*} Returns the unwrapped value.\n */\n function lazyValue() {\n var array = this.__wrapped__.value(),\n dir = this.__dir__,\n isArr = isArray(array),\n isRight = dir < 0,\n arrLength = isArr ? array.length : 0,\n view = getView(0, arrLength, this.__views__),\n start = view.start,\n end = view.end,\n length = end - start,\n index = isRight ? end : (start - 1),\n iteratees = this.__iteratees__,\n iterLength = iteratees.length,\n resIndex = 0,\n takeCount = nativeMin(length, this.__takeCount__);\n\n if (!isArr || (!isRight && arrLength == length && takeCount == length)) {\n return baseWrapperValue(array, this.__actions__);\n }\n var result = [];\n\n outer:\n while (length-- && resIndex < takeCount) {\n index += dir;\n\n var iterIndex = -1,\n value = array[index];\n\n while (++iterIndex < iterLength) {\n var data = iteratees[iterIndex],\n iteratee = data.iteratee,\n type = data.type,\n computed = iteratee(value);\n\n if (type == LAZY_MAP_FLAG) {\n value = computed;\n } else if (!computed) {\n if (type == LAZY_FILTER_FLAG) {\n continue outer;\n } else {\n break outer;\n }\n }\n }\n result[resIndex++] = value;\n }\n return result;\n }\n\n // Ensure `LazyWrapper` is an instance of `baseLodash`.\n LazyWrapper.prototype = baseCreate(baseLodash.prototype);\n LazyWrapper.prototype.constructor = LazyWrapper;\n\n /*------------------------------------------------------------------------*/\n\n /**\n * Creates a hash object.\n *\n * @private\n * @constructor\n * @param {Array} [entries] The key-value pairs to cache.\n */\n function Hash(entries) {\n var index = -1,\n length = entries == null ? 0 : entries.length;\n\n this.clear();\n while (++index < length) {\n var entry = entries[index];\n this.set(entry[0], entry[1]);\n }\n }\n\n /**\n * Removes all key-value entries from the hash.\n *\n * @private\n * @name clear\n * @memberOf Hash\n */\n function hashClear() {\n this.__data__ = nativeCreate ? nativeCreate(null) : {};\n this.size = 0;\n }\n\n /**\n * Removes `key` and its value from the hash.\n *\n * @private\n * @name delete\n * @memberOf Hash\n * @param {Object} hash The hash to modify.\n * @param {string} key The key of the value to remove.\n * @returns {boolean} Returns `true` if the entry was removed, else `false`.\n */\n function hashDelete(key) {\n var result = this.has(key) && delete this.__data__[key];\n this.size -= result ? 1 : 0;\n return result;\n }\n\n /**\n * Gets the hash value for `key`.\n *\n * @private\n * @name get\n * @memberOf Hash\n * @param {string} key The key of the value to get.\n * @returns {*} Returns the entry value.\n */\n function hashGet(key) {\n var data = this.__data__;\n if (nativeCreate) {\n var result = data[key];\n return result === HASH_UNDEFINED ? undefined : result;\n }\n return hasOwnProperty.call(data, key) ? data[key] : undefined;\n }\n\n /**\n * Checks if a hash value for `key` exists.\n *\n * @private\n * @name has\n * @memberOf Hash\n * @param {string} key The key of the entry to check.\n * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`.\n */\n function hashHas(key) {\n var data = this.__data__;\n return nativeCreate ? (data[key] !== undefined) : hasOwnProperty.call(data, key);\n }\n\n /**\n * Sets the hash `key` to `value`.\n *\n * @private\n * @name set\n * @memberOf Hash\n * @param {string} key The key of the value to set.\n * @param {*} value The value to set.\n * @returns {Object} Returns the hash instance.\n */\n function hashSet(key, value) {\n var data = this.__data__;\n this.size += this.has(key) ? 0 : 1;\n data[key] = (nativeCreate && value === undefined) ? HASH_UNDEFINED : value;\n return this;\n }\n\n // Add methods to `Hash`.\n Hash.prototype.clear = hashClear;\n Hash.prototype['delete'] = hashDelete;\n Hash.prototype.get = hashGet;\n Hash.prototype.has = hashHas;\n Hash.prototype.set = hashSet;\n\n /*------------------------------------------------------------------------*/\n\n /**\n * Creates an list cache object.\n *\n * @private\n * @constructor\n * @param {Array} [entries] The key-value pairs to cache.\n */\n function ListCache(entries) {\n var index = -1,\n length = entries == null ? 0 : entries.length;\n\n this.clear();\n while (++index < length) {\n var entry = entries[index];\n this.set(entry[0], entry[1]);\n }\n }\n\n /**\n * Removes all key-value entries from the list cache.\n *\n * @private\n * @name clear\n * @memberOf ListCache\n */\n function listCacheClear() {\n this.__data__ = [];\n this.size = 0;\n }\n\n /**\n * Removes `key` and its value from the list cache.\n *\n * @private\n * @name delete\n * @memberOf ListCache\n * @param {string} key The key of the value to remove.\n * @returns {boolean} Returns `true` if the entry was removed, else `false`.\n */\n function listCacheDelete(key) {\n var data = this.__data__,\n index = assocIndexOf(data, key);\n\n if (index < 0) {\n return false;\n }\n var lastIndex = data.length - 1;\n if (index == lastIndex) {\n data.pop();\n } else {\n splice.call(data, index, 1);\n }\n --this.size;\n return true;\n }\n\n /**\n * Gets the list cache value for `key`.\n *\n * @private\n * @name get\n * @memberOf ListCache\n * @param {string} key The key of the value to get.\n * @returns {*} Returns the entry value.\n */\n function listCacheGet(key) {\n var data = this.__data__,\n index = assocIndexOf(data, key);\n\n return index < 0 ? undefined : data[index][1];\n }\n\n /**\n * Checks if a list cache value for `key` exists.\n *\n * @private\n * @name has\n * @memberOf ListCache\n * @param {string} key The key of the entry to check.\n * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`.\n */\n function listCacheHas(key) {\n return assocIndexOf(this.__data__, key) > -1;\n }\n\n /**\n * Sets the list cache `key` to `value`.\n *\n * @private\n * @name set\n * @memberOf ListCache\n * @param {string} key The key of the value to set.\n * @param {*} value The value to set.\n * @returns {Object} Returns the list cache instance.\n */\n function listCacheSet(key, value) {\n var data = this.__data__,\n index = assocIndexOf(data, key);\n\n if (index < 0) {\n ++this.size;\n data.push([key, value]);\n } else {\n data[index][1] = value;\n }\n return this;\n }\n\n // Add methods to `ListCache`.\n ListCache.prototype.clear = listCacheClear;\n ListCache.prototype['delete'] = listCacheDelete;\n ListCache.prototype.get = listCacheGet;\n ListCache.prototype.has = listCacheHas;\n ListCache.prototype.set = listCacheSet;\n\n /*------------------------------------------------------------------------*/\n\n /**\n * Creates a map cache object to store key-value pairs.\n *\n * @private\n * @constructor\n * @param {Array} [entries] The key-value pairs to cache.\n */\n function MapCache(entries) {\n var index = -1,\n length = entries == null ? 0 : entries.length;\n\n this.clear();\n while (++index < length) {\n var entry = entries[index];\n this.set(entry[0], entry[1]);\n }\n }\n\n /**\n * Removes all key-value entries from the map.\n *\n * @private\n * @name clear\n * @memberOf MapCache\n */\n function mapCacheClear() {\n this.size = 0;\n this.__data__ = {\n 'hash': new Hash,\n 'map': new (Map || ListCache),\n 'string': new Hash\n };\n }\n\n /**\n * Removes `key` and its value from the map.\n *\n * @private\n * @name delete\n * @memberOf MapCache\n * @param {string} key The key of the value to remove.\n * @returns {boolean} Returns `true` if the entry was removed, else `false`.\n */\n function mapCacheDelete(key) {\n var result = getMapData(this, key)['delete'](key);\n this.size -= result ? 1 : 0;\n return result;\n }\n\n /**\n * Gets the map value for `key`.\n *\n * @private\n * @name get\n * @memberOf MapCache\n * @param {string} key The key of the value to get.\n * @returns {*} Returns the entry value.\n */\n function mapCacheGet(key) {\n return getMapData(this, key).get(key);\n }\n\n /**\n * Checks if a map value for `key` exists.\n *\n * @private\n * @name has\n * @memberOf MapCache\n * @param {string} key The key of the entry to check.\n * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`.\n */\n function mapCacheHas(key) {\n return getMapData(this, key).has(key);\n }\n\n /**\n * Sets the map `key` to `value`.\n *\n * @private\n * @name set\n * @memberOf MapCache\n * @param {string} key The key of the value to set.\n * @param {*} value The value to set.\n * @returns {Object} Returns the map cache instance.\n */\n function mapCacheSet(key, value) {\n var data = getMapData(this, key),\n size = data.size;\n\n data.set(key, value);\n this.size += data.size == size ? 0 : 1;\n return this;\n }\n\n // Add methods to `MapCache`.\n MapCache.prototype.clear = mapCacheClear;\n MapCache.prototype['delete'] = mapCacheDelete;\n MapCache.prototype.get = mapCacheGet;\n MapCache.prototype.has = mapCacheHas;\n MapCache.prototype.set = mapCacheSet;\n\n /*------------------------------------------------------------------------*/\n\n /**\n *\n * Creates an array cache object to store unique values.\n *\n * @private\n * @constructor\n * @param {Array} [values] The values to cache.\n */\n function SetCache(values) {\n var index = -1,\n length = values == null ? 0 : values.length;\n\n this.__data__ = new MapCache;\n while (++index < length) {\n this.add(values[index]);\n }\n }\n\n /**\n * Adds `value` to the array cache.\n *\n * @private\n * @name add\n * @memberOf SetCache\n * @alias push\n * @param {*} value The value to cache.\n * @returns {Object} Returns the cache instance.\n */\n function setCacheAdd(value) {\n this.__data__.set(value, HASH_UNDEFINED);\n return this;\n }\n\n /**\n * Checks if `value` is in the array cache.\n *\n * @private\n * @name has\n * @memberOf SetCache\n * @param {*} value The value to search for.\n * @returns {number} Returns `true` if `value` is found, else `false`.\n */\n function setCacheHas(value) {\n return this.__data__.has(value);\n }\n\n // Add methods to `SetCache`.\n SetCache.prototype.add = SetCache.prototype.push = setCacheAdd;\n SetCache.prototype.has = setCacheHas;\n\n /*------------------------------------------------------------------------*/\n\n /**\n * Creates a stack cache object to store key-value pairs.\n *\n * @private\n * @constructor\n * @param {Array} [entries] The key-value pairs to cache.\n */\n function Stack(entries) {\n var data = this.__data__ = new ListCache(entries);\n this.size = data.size;\n }\n\n /**\n * Removes all key-value entries from the stack.\n *\n * @private\n * @name clear\n * @memberOf Stack\n */\n function stackClear() {\n this.__data__ = new ListCache;\n this.size = 0;\n }\n\n /**\n * Removes `key` and its value from the stack.\n *\n * @private\n * @name delete\n * @memberOf Stack\n * @param {string} key The key of the value to remove.\n * @returns {boolean} Returns `true` if the entry was removed, else `false`.\n */\n function stackDelete(key) {\n var data = this.__data__,\n result = data['delete'](key);\n\n this.size = data.size;\n return result;\n }\n\n /**\n * Gets the stack value for `key`.\n *\n * @private\n * @name get\n * @memberOf Stack\n * @param {string} key The key of the value to get.\n * @returns {*} Returns the entry value.\n */\n function stackGet(key) {\n return this.__data__.get(key);\n }\n\n /**\n * Checks if a stack value for `key` exists.\n *\n * @private\n * @name has\n * @memberOf Stack\n * @param {string} key The key of the entry to check.\n * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`.\n */\n function stackHas(key) {\n return this.__data__.has(key);\n }\n\n /**\n * Sets the stack `key` to `value`.\n *\n * @private\n * @name set\n * @memberOf Stack\n * @param {string} key The key of the value to set.\n * @param {*} value The value to set.\n * @returns {Object} Returns the stack cache instance.\n */\n function stackSet(key, value) {\n var data = this.__data__;\n if (data instanceof ListCache) {\n var pairs = data.__data__;\n if (!Map || (pairs.length < LARGE_ARRAY_SIZE - 1)) {\n pairs.push([key, value]);\n this.size = ++data.size;\n return this;\n }\n data = this.__data__ = new MapCache(pairs);\n }\n data.set(key, value);\n this.size = data.size;\n return this;\n }\n\n // Add methods to `Stack`.\n Stack.prototype.clear = stackClear;\n Stack.prototype['delete'] = stackDelete;\n Stack.prototype.get = stackGet;\n Stack.prototype.has = stackHas;\n Stack.prototype.set = stackSet;\n\n /*------------------------------------------------------------------------*/\n\n /**\n * Creates an array of the enumerable property names of the array-like `value`.\n *\n * @private\n * @param {*} value The value to query.\n * @param {boolean} inherited Specify returning inherited property names.\n * @returns {Array} Returns the array of property names.\n */\n function arrayLikeKeys(value, inherited) {\n var isArr = isArray(value),\n isArg = !isArr && isArguments(value),\n isBuff = !isArr && !isArg && isBuffer(value),\n isType = !isArr && !isArg && !isBuff && isTypedArray(value),\n skipIndexes = isArr || isArg || isBuff || isType,\n result = skipIndexes ? baseTimes(value.length, String) : [],\n length = result.length;\n\n for (var key in value) {\n if ((inherited || hasOwnProperty.call(value, key)) &&\n !(skipIndexes && (\n // Safari 9 has enumerable `arguments.length` in strict mode.\n key == 'length' ||\n // Node.js 0.10 has enumerable non-index properties on buffers.\n (isBuff && (key == 'offset' || key == 'parent')) ||\n // PhantomJS 2 has enumerable non-index properties on typed arrays.\n (isType && (key == 'buffer' || key == 'byteLength' || key == 'byteOffset')) ||\n // Skip index properties.\n isIndex(key, length)\n ))) {\n result.push(key);\n }\n }\n return result;\n }\n\n /**\n * A specialized version of `_.sample` for arrays.\n *\n * @private\n * @param {Array} array The array to sample.\n * @returns {*} Returns the random element.\n */\n function arraySample(array) {\n var length = array.length;\n return length ? array[baseRandom(0, length - 1)] : undefined;\n }\n\n /**\n * A specialized version of `_.sampleSize` for arrays.\n *\n * @private\n * @param {Array} array The array to sample.\n * @param {number} n The number of elements to sample.\n * @returns {Array} Returns the random elements.\n */\n function arraySampleSize(array, n) {\n return shuffleSelf(copyArray(array), baseClamp(n, 0, array.length));\n }\n\n /**\n * A specialized version of `_.shuffle` for arrays.\n *\n * @private\n * @param {Array} array The array to shuffle.\n * @returns {Array} Returns the new shuffled array.\n */\n function arrayShuffle(array) {\n return shuffleSelf(copyArray(array));\n }\n\n /**\n * This function is like `assignValue` except that it doesn't assign\n * `undefined` values.\n *\n * @private\n * @param {Object} object The object to modify.\n * @param {string} key The key of the property to assign.\n * @param {*} value The value to assign.\n */\n function assignMergeValue(object, key, value) {\n if ((value !== undefined && !eq(object[key], value)) ||\n (value === undefined && !(key in object))) {\n baseAssignValue(object, key, value);\n }\n }\n\n /**\n * Assigns `value` to `key` of `object` if the existing value is not equivalent\n * using [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)\n * for equality comparisons.\n *\n * @private\n * @param {Object} object The object to modify.\n * @param {string} key The key of the property to assign.\n * @param {*} value The value to assign.\n */\n function assignValue(object, key, value) {\n var objValue = object[key];\n if (!(hasOwnProperty.call(object, key) && eq(objValue, value)) ||\n (value === undefined && !(key in object))) {\n baseAssignValue(object, key, value);\n }\n }\n\n /**\n * Gets the index at which the `key` is found in `array` of key-value pairs.\n *\n * @private\n * @param {Array} array The array to inspect.\n * @param {*} key The key to search for.\n * @returns {number} Returns the index of the matched value, else `-1`.\n */\n function assocIndexOf(array, key) {\n var length = array.length;\n while (length--) {\n if (eq(array[length][0], key)) {\n return length;\n }\n }\n return -1;\n }\n\n /**\n * Aggregates elements of `collection` on `accumulator` with keys transformed\n * by `iteratee` and values set by `setter`.\n *\n * @private\n * @param {Array|Object} collection The collection to iterate over.\n * @param {Function} setter The function to set `accumulator` values.\n * @param {Function} iteratee The iteratee to transform keys.\n * @param {Object} accumulator The initial aggregated object.\n * @returns {Function} Returns `accumulator`.\n */\n function baseAggregator(collection, setter, iteratee, accumulator) {\n baseEach(collection, function(value, key, collection) {\n setter(accumulator, value, iteratee(value), collection);\n });\n return accumulator;\n }\n\n /**\n * The base implementation of `_.assign` without support for multiple sources\n * or `customizer` functions.\n *\n * @private\n * @param {Object} object The destination object.\n * @param {Object} source The source object.\n * @returns {Object} Returns `object`.\n */\n function baseAssign(object, source) {\n return object && copyObject(source, keys(source), object);\n }\n\n /**\n * The base implementation of `_.assignIn` without support for multiple sources\n * or `customizer` functions.\n *\n * @private\n * @param {Object} object The destination object.\n * @param {Object} source The source object.\n * @returns {Object} Returns `object`.\n */\n function baseAssignIn(object, source) {\n return object && copyObject(source, keysIn(source), object);\n }\n\n /**\n * The base implementation of `assignValue` and `assignMergeValue` without\n * value checks.\n *\n * @private\n * @param {Object} object The object to modify.\n * @param {string} key The key of the property to assign.\n * @param {*} value The value to assign.\n */\n function baseAssignValue(object, key, value) {\n if (key == '__proto__' && defineProperty) {\n defineProperty(object, key, {\n 'configurable': true,\n 'enumerable': true,\n 'value': value,\n 'writable': true\n });\n } else {\n object[key] = value;\n }\n }\n\n /**\n * The base implementation of `_.at` without support for individual paths.\n *\n * @private\n * @param {Object} object The object to iterate over.\n * @param {string[]} paths The property paths to pick.\n * @returns {Array} Returns the picked elements.\n */\n function baseAt(object, paths) {\n var index = -1,\n length = paths.length,\n result = Array(length),\n skip = object == null;\n\n while (++index < length) {\n result[index] = skip ? undefined : get(object, paths[index]);\n }\n return result;\n }\n\n /**\n * The base implementation of `_.clamp` which doesn't coerce arguments.\n *\n * @private\n * @param {number} number The number to clamp.\n * @param {number} [lower] The lower bound.\n * @param {number} upper The upper bound.\n * @returns {number} Returns the clamped number.\n */\n function baseClamp(number, lower, upper) {\n if (number === number) {\n if (upper !== undefined) {\n number = number <= upper ? number : upper;\n }\n if (lower !== undefined) {\n number = number >= lower ? number : lower;\n }\n }\n return number;\n }\n\n /**\n * The base implementation of `_.clone` and `_.cloneDeep` which tracks\n * traversed objects.\n *\n * @private\n * @param {*} value The value to clone.\n * @param {boolean} bitmask The bitmask flags.\n * 1 - Deep clone\n * 2 - Flatten inherited properties\n * 4 - Clone symbols\n * @param {Function} [customizer] The function to customize cloning.\n * @param {string} [key] The key of `value`.\n * @param {Object} [object] The parent object of `value`.\n * @param {Object} [stack] Tracks traversed objects and their clone counterparts.\n * @returns {*} Returns the cloned value.\n */\n function baseClone(value, bitmask, customizer, key, object, stack) {\n var result,\n isDeep = bitmask & CLONE_DEEP_FLAG,\n isFlat = bitmask & CLONE_FLAT_FLAG,\n isFull = bitmask & CLONE_SYMBOLS_FLAG;\n\n if (customizer) {\n result = object ? customizer(value, key, object, stack) : customizer(value);\n }\n if (result !== undefined) {\n return result;\n }\n if (!isObject(value)) {\n return value;\n }\n var isArr = isArray(value);\n if (isArr) {\n result = initCloneArray(value);\n if (!isDeep) {\n return copyArray(value, result);\n }\n } else {\n var tag = getTag(value),\n isFunc = tag == funcTag || tag == genTag;\n\n if (isBuffer(value)) {\n return cloneBuffer(value, isDeep);\n }\n if (tag == objectTag || tag == argsTag || (isFunc && !object)) {\n result = (isFlat || isFunc) ? {} : initCloneObject(value);\n if (!isDeep) {\n return isFlat\n ? copySymbolsIn(value, baseAssignIn(result, value))\n : copySymbols(value, baseAssign(result, value));\n }\n } else {\n if (!cloneableTags[tag]) {\n return object ? value : {};\n }\n result = initCloneByTag(value, tag, isDeep);\n }\n }\n // Check for circular references and return its corresponding clone.\n stack || (stack = new Stack);\n var stacked = stack.get(value);\n if (stacked) {\n return stacked;\n }\n stack.set(value, result);\n\n if (isSet(value)) {\n value.forEach(function(subValue) {\n result.add(baseClone(subValue, bitmask, customizer, subValue, value, stack));\n });\n } else if (isMap(value)) {\n value.forEach(function(subValue, key) {\n result.set(key, baseClone(subValue, bitmask, customizer, key, value, stack));\n });\n }\n\n var keysFunc = isFull\n ? (isFlat ? getAllKeysIn : getAllKeys)\n : (isFlat ? keysIn : keys);\n\n var props = isArr ? undefined : keysFunc(value);\n arrayEach(props || value, function(subValue, key) {\n if (props) {\n key = subValue;\n subValue = value[key];\n }\n // Recursively populate clone (susceptible to call stack limits).\n assignValue(result, key, baseClone(subValue, bitmask, customizer, key, value, stack));\n });\n return result;\n }\n\n /**\n * The base implementation of `_.conforms` which doesn't clone `source`.\n *\n * @private\n * @param {Object} source The object of property predicates to conform to.\n * @returns {Function} Returns the new spec function.\n */\n function baseConforms(source) {\n var props = keys(source);\n return function(object) {\n return baseConformsTo(object, source, props);\n };\n }\n\n /**\n * The base implementation of `_.conformsTo` which accepts `props` to check.\n *\n * @private\n * @param {Object} object The object to inspect.\n * @param {Object} source The object of property predicates to conform to.\n * @returns {boolean} Returns `true` if `object` conforms, else `false`.\n */\n function baseConformsTo(object, source, props) {\n var length = props.length;\n if (object == null) {\n return !length;\n }\n object = Object(object);\n while (length--) {\n var key = props[length],\n predicate = source[key],\n value = object[key];\n\n if ((value === undefined && !(key in object)) || !predicate(value)) {\n return false;\n }\n }\n return true;\n }\n\n /**\n * The base implementation of `_.delay` and `_.defer` which accepts `args`\n * to provide to `func`.\n *\n * @private\n * @param {Function} func The function to delay.\n * @param {number} wait The number of milliseconds to delay invocation.\n * @param {Array} args The arguments to provide to `func`.\n * @returns {number|Object} Returns the timer id or timeout object.\n */\n function baseDelay(func, wait, args) {\n if (typeof func != 'function') {\n throw new TypeError(FUNC_ERROR_TEXT);\n }\n return setTimeout(function() { func.apply(undefined, args); }, wait);\n }\n\n /**\n * The base implementation of methods like `_.difference` without support\n * for excluding multiple arrays or iteratee shorthands.\n *\n * @private\n * @param {Array} array The array to inspect.\n * @param {Array} values The values to exclude.\n * @param {Function} [iteratee] The iteratee invoked per element.\n * @param {Function} [comparator] The comparator invoked per element.\n * @returns {Array} Returns the new array of filtered values.\n */\n function baseDifference(array, values, iteratee, comparator) {\n var index = -1,\n includes = arrayIncludes,\n isCommon = true,\n length = array.length,\n result = [],\n valuesLength = values.length;\n\n if (!length) {\n return result;\n }\n if (iteratee) {\n values = arrayMap(values, baseUnary(iteratee));\n }\n if (comparator) {\n includes = arrayIncludesWith;\n isCommon = false;\n }\n else if (values.length >= LARGE_ARRAY_SIZE) {\n includes = cacheHas;\n isCommon = false;\n values = new SetCache(values);\n }\n outer:\n while (++index < length) {\n var value = array[index],\n computed = iteratee == null ? value : iteratee(value);\n\n value = (comparator || value !== 0) ? value : 0;\n if (isCommon && computed === computed) {\n var valuesIndex = valuesLength;\n while (valuesIndex--) {\n if (values[valuesIndex] === computed) {\n continue outer;\n }\n }\n result.push(value);\n }\n else if (!includes(values, computed, comparator)) {\n result.push(value);\n }\n }\n return result;\n }\n\n /**\n * The base implementation of `_.forEach` without support for iteratee shorthands.\n *\n * @private\n * @param {Array|Object} collection The collection to iterate over.\n * @param {Function} iteratee The function invoked per iteration.\n * @returns {Array|Object} Returns `collection`.\n */\n var baseEach = createBaseEach(baseForOwn);\n\n /**\n * The base implementation of `_.forEachRight` without support for iteratee shorthands.\n *\n * @private\n * @param {Array|Object} collection The collection to iterate over.\n * @param {Function} iteratee The function invoked per iteration.\n * @returns {Array|Object} Returns `collection`.\n */\n var baseEachRight = createBaseEach(baseForOwnRight, true);\n\n /**\n * The base implementation of `_.every` without support for iteratee shorthands.\n *\n * @private\n * @param {Array|Object} collection The collection to iterate over.\n * @param {Function} predicate The function invoked per iteration.\n * @returns {boolean} Returns `true` if all elements pass the predicate check,\n * else `false`\n */\n function baseEvery(collection, predicate) {\n var result = true;\n baseEach(collection, function(value, index, collection) {\n result = !!predicate(value, index, collection);\n return result;\n });\n return result;\n }\n\n /**\n * The base implementation of methods like `_.max` and `_.min` which accepts a\n * `comparator` to determine the extremum value.\n *\n * @private\n * @param {Array} array The array to iterate over.\n * @param {Function} iteratee The iteratee invoked per iteration.\n * @param {Function} comparator The comparator used to compare values.\n * @returns {*} Returns the extremum value.\n */\n function baseExtremum(array, iteratee, comparator) {\n var index = -1,\n length = array.length;\n\n while (++index < length) {\n var value = array[index],\n current = iteratee(value);\n\n if (current != null && (computed === undefined\n ? (current === current && !isSymbol(current))\n : comparator(current, computed)\n )) {\n var computed = current,\n result = value;\n }\n }\n return result;\n }\n\n /**\n * The base implementation of `_.fill` without an iteratee call guard.\n *\n * @private\n * @param {Array} array The array to fill.\n * @param {*} value The value to fill `array` with.\n * @param {number} [start=0] The start position.\n * @param {number} [end=array.length] The end position.\n * @returns {Array} Returns `array`.\n */\n function baseFill(array, value, start, end) {\n var length = array.length;\n\n start = toInteger(start);\n if (start < 0) {\n start = -start > length ? 0 : (length + start);\n }\n end = (end === undefined || end > length) ? length : toInteger(end);\n if (end < 0) {\n end += length;\n }\n end = start > end ? 0 : toLength(end);\n while (start < end) {\n array[start++] = value;\n }\n return array;\n }\n\n /**\n * The base implementation of `_.filter` without support for iteratee shorthands.\n *\n * @private\n * @param {Array|Object} collection The collection to iterate over.\n * @param {Function} predicate The function invoked per iteration.\n * @returns {Array} Returns the new filtered array.\n */\n function baseFilter(collection, predicate) {\n var result = [];\n baseEach(collection, function(value, index, collection) {\n if (predicate(value, index, collection)) {\n result.push(value);\n }\n });\n return result;\n }\n\n /**\n * The base implementation of `_.flatten` with support for restricting flattening.\n *\n * @private\n * @param {Array} array The array to flatten.\n * @param {number} depth The maximum recursion depth.\n * @param {boolean} [predicate=isFlattenable] The function invoked per iteration.\n * @param {boolean} [isStrict] Restrict to values that pass `predicate` checks.\n * @param {Array} [result=[]] The initial result value.\n * @returns {Array} Returns the new flattened array.\n */\n function baseFlatten(array, depth, predicate, isStrict, result) {\n var index = -1,\n length = array.length;\n\n predicate || (predicate = isFlattenable);\n result || (result = []);\n\n while (++index < length) {\n var value = array[index];\n if (depth > 0 && predicate(value)) {\n if (depth > 1) {\n // Recursively flatten arrays (susceptible to call stack limits).\n baseFlatten(value, depth - 1, predicate, isStrict, result);\n } else {\n arrayPush(result, value);\n }\n } else if (!isStrict) {\n result[result.length] = value;\n }\n }\n return result;\n }\n\n /**\n * The base implementation of `baseForOwn` which iterates over `object`\n * properties returned by `keysFunc` and invokes `iteratee` for each property.\n * Iteratee functions may exit iteration early by explicitly returning `false`.\n *\n * @private\n * @param {Object} object The object to iterate over.\n * @param {Function} iteratee The function invoked per iteration.\n * @param {Function} keysFunc The function to get the keys of `object`.\n * @returns {Object} Returns `object`.\n */\n var baseFor = createBaseFor();\n\n /**\n * This function is like `baseFor` except that it iterates over properties\n * in the opposite order.\n *\n * @private\n * @param {Object} object The object to iterate over.\n * @param {Function} iteratee The function invoked per iteration.\n * @param {Function} keysFunc The function to get the keys of `object`.\n * @returns {Object} Returns `object`.\n */\n var baseForRight = createBaseFor(true);\n\n /**\n * The base implementation of `_.forOwn` without support for iteratee shorthands.\n *\n * @private\n * @param {Object} object The object to iterate over.\n * @param {Function} iteratee The function invoked per iteration.\n * @returns {Object} Returns `object`.\n */\n function baseForOwn(object, iteratee) {\n return object && baseFor(object, iteratee, keys);\n }\n\n /**\n * The base implementation of `_.forOwnRight` without support for iteratee shorthands.\n *\n * @private\n * @param {Object} object The object to iterate over.\n * @param {Function} iteratee The function invoked per iteration.\n * @returns {Object} Returns `object`.\n */\n function baseForOwnRight(object, iteratee) {\n return object && baseForRight(object, iteratee, keys);\n }\n\n /**\n * The base implementation of `_.functions` which creates an array of\n * `object` function property names filtered from `props`.\n *\n * @private\n * @param {Object} object The object to inspect.\n * @param {Array} props The property names to filter.\n * @returns {Array} Returns the function names.\n */\n function baseFunctions(object, props) {\n return arrayFilter(props, function(key) {\n return isFunction(object[key]);\n });\n }\n\n /**\n * The base implementation of `_.get` without support for default values.\n *\n * @private\n * @param {Object} object The object to query.\n * @param {Array|string} path The path of the property to get.\n * @returns {*} Returns the resolved value.\n */\n function baseGet(object, path) {\n path = castPath(path, object);\n\n var index = 0,\n length = path.length;\n\n while (object != null && index < length) {\n object = object[toKey(path[index++])];\n }\n return (index && index == length) ? object : undefined;\n }\n\n /**\n * The base implementation of `getAllKeys` and `getAllKeysIn` which uses\n * `keysFunc` and `symbolsFunc` to get the enumerable property names and\n * symbols of `object`.\n *\n * @private\n * @param {Object} object The object to query.\n * @param {Function} keysFunc The function to get the keys of `object`.\n * @param {Function} symbolsFunc The function to get the symbols of `object`.\n * @returns {Array} Returns the array of property names and symbols.\n */\n function baseGetAllKeys(object, keysFunc, symbolsFunc) {\n var result = keysFunc(object);\n return isArray(object) ? result : arrayPush(result, symbolsFunc(object));\n }\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 */\n function 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\n /**\n * The base implementation of `_.gt` which doesn't coerce arguments.\n *\n * @private\n * @param {*} value The value to compare.\n * @param {*} other The other value to compare.\n * @returns {boolean} Returns `true` if `value` is greater than `other`,\n * else `false`.\n */\n function baseGt(value, other) {\n return value > other;\n }\n\n /**\n * The base implementation of `_.has` without support for deep paths.\n *\n * @private\n * @param {Object} [object] The object to query.\n * @param {Array|string} key The key to check.\n * @returns {boolean} Returns `true` if `key` exists, else `false`.\n */\n function baseHas(object, key) {\n return object != null && hasOwnProperty.call(object, key);\n }\n\n /**\n * The base implementation of `_.hasIn` without support for deep paths.\n *\n * @private\n * @param {Object} [object] The object to query.\n * @param {Array|string} key The key to check.\n * @returns {boolean} Returns `true` if `key` exists, else `false`.\n */\n function baseHasIn(object, key) {\n return object != null && key in Object(object);\n }\n\n /**\n * The base implementation of `_.inRange` which doesn't coerce arguments.\n *\n * @private\n * @param {number} number The number to check.\n * @param {number} start The start of the range.\n * @param {number} end The end of the range.\n * @returns {boolean} Returns `true` if `number` is in the range, else `false`.\n */\n function baseInRange(number, start, end) {\n return number >= nativeMin(start, end) && number < nativeMax(start, end);\n }\n\n /**\n * The base implementation of methods like `_.intersection`, without support\n * for iteratee shorthands, that accepts an array of arrays to inspect.\n *\n * @private\n * @param {Array} arrays The arrays to inspect.\n * @param {Function} [iteratee] The iteratee invoked per element.\n * @param {Function} [comparator] The comparator invoked per element.\n * @returns {Array} Returns the new array of shared values.\n */\n function baseIntersection(arrays, iteratee, comparator) {\n var includes = comparator ? arrayIncludesWith : arrayIncludes,\n length = arrays[0].length,\n othLength = arrays.length,\n othIndex = othLength,\n caches = Array(othLength),\n maxLength = Infinity,\n result = [];\n\n while (othIndex--) {\n var array = arrays[othIndex];\n if (othIndex && iteratee) {\n array = arrayMap(array, baseUnary(iteratee));\n }\n maxLength = nativeMin(array.length, maxLength);\n caches[othIndex] = !comparator && (iteratee || (length >= 120 && array.length >= 120))\n ? new SetCache(othIndex && array)\n : undefined;\n }\n array = arrays[0];\n\n var index = -1,\n seen = caches[0];\n\n outer:\n while (++index < length && result.length < maxLength) {\n var value = array[index],\n computed = iteratee ? iteratee(value) : value;\n\n value = (comparator || value !== 0) ? value : 0;\n if (!(seen\n ? cacheHas(seen, computed)\n : includes(result, computed, comparator)\n )) {\n othIndex = othLength;\n while (--othIndex) {\n var cache = caches[othIndex];\n if (!(cache\n ? cacheHas(cache, computed)\n : includes(arrays[othIndex], computed, comparator))\n ) {\n continue outer;\n }\n }\n if (seen) {\n seen.push(computed);\n }\n result.push(value);\n }\n }\n return result;\n }\n\n /**\n * The base implementation of `_.invert` and `_.invertBy` which inverts\n * `object` with values transformed by `iteratee` and set by `setter`.\n *\n * @private\n * @param {Object} object The object to iterate over.\n * @param {Function} setter The function to set `accumulator` values.\n * @param {Function} iteratee The iteratee to transform values.\n * @param {Object} accumulator The initial inverted object.\n * @returns {Function} Returns `accumulator`.\n */\n function baseInverter(object, setter, iteratee, accumulator) {\n baseForOwn(object, function(value, key, object) {\n setter(accumulator, iteratee(value), key, object);\n });\n return accumulator;\n }\n\n /**\n * The base implementation of `_.invoke` without support for individual\n * method arguments.\n *\n * @private\n * @param {Object} object The object to query.\n * @param {Array|string} path The path of the method to invoke.\n * @param {Array} args The arguments to invoke the method with.\n * @returns {*} Returns the result of the invoked method.\n */\n function baseInvoke(object, path, args) {\n path = castPath(path, object);\n object = parent(object, path);\n var func = object == null ? object : object[toKey(last(path))];\n return func == null ? undefined : apply(func, object, args);\n }\n\n /**\n * The base implementation of `_.isArguments`.\n *\n * @private\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is an `arguments` object,\n */\n function baseIsArguments(value) {\n return isObjectLike(value) && baseGetTag(value) == argsTag;\n }\n\n /**\n * The base implementation of `_.isArrayBuffer` without Node.js optimizations.\n *\n * @private\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is an array buffer, else `false`.\n */\n function baseIsArrayBuffer(value) {\n return isObjectLike(value) && baseGetTag(value) == arrayBufferTag;\n }\n\n /**\n * The base implementation of `_.isDate` without Node.js optimizations.\n *\n * @private\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is a date object, else `false`.\n */\n function baseIsDate(value) {\n return isObjectLike(value) && baseGetTag(value) == dateTag;\n }\n\n /**\n * The base implementation of `_.isEqual` which supports partial comparisons\n * and tracks traversed objects.\n *\n * @private\n * @param {*} value The value to compare.\n * @param {*} other The other value to compare.\n * @param {boolean} bitmask The bitmask flags.\n * 1 - Unordered comparison\n * 2 - Partial comparison\n * @param {Function} [customizer] The function to customize comparisons.\n * @param {Object} [stack] Tracks traversed `value` and `other` objects.\n * @returns {boolean} Returns `true` if the values are equivalent, else `false`.\n */\n function baseIsEqual(value, other, bitmask, customizer, stack) {\n if (value === other) {\n return true;\n }\n if (value == null || other == null || (!isObjectLike(value) && !isObjectLike(other))) {\n return value !== value && other !== other;\n }\n return baseIsEqualDeep(value, other, bitmask, customizer, baseIsEqual, stack);\n }\n\n /**\n * A specialized version of `baseIsEqual` for arrays and objects which performs\n * deep comparisons and tracks traversed objects enabling objects with circular\n * references to be compared.\n *\n * @private\n * @param {Object} object The object to compare.\n * @param {Object} other The other object to compare.\n * @param {number} bitmask The bitmask flags. See `baseIsEqual` for more details.\n * @param {Function} customizer The function to customize comparisons.\n * @param {Function} equalFunc The function to determine equivalents of values.\n * @param {Object} [stack] Tracks traversed `object` and `other` objects.\n * @returns {boolean} Returns `true` if the objects are equivalent, else `false`.\n */\n function baseIsEqualDeep(object, other, bitmask, customizer, equalFunc, stack) {\n var objIsArr = isArray(object),\n othIsArr = isArray(other),\n objTag = objIsArr ? arrayTag : getTag(object),\n othTag = othIsArr ? arrayTag : getTag(other);\n\n objTag = objTag == argsTag ? objectTag : objTag;\n othTag = othTag == argsTag ? objectTag : othTag;\n\n var objIsObj = objTag == objectTag,\n othIsObj = othTag == objectTag,\n isSameTag = objTag == othTag;\n\n if (isSameTag && isBuffer(object)) {\n if (!isBuffer(other)) {\n return false;\n }\n objIsArr = true;\n objIsObj = false;\n }\n if (isSameTag && !objIsObj) {\n stack || (stack = new Stack);\n return (objIsArr || isTypedArray(object))\n ? equalArrays(object, other, bitmask, customizer, equalFunc, stack)\n : equalByTag(object, other, objTag, bitmask, customizer, equalFunc, stack);\n }\n if (!(bitmask & COMPARE_PARTIAL_FLAG)) {\n var objIsWrapped = objIsObj && hasOwnProperty.call(object, '__wrapped__'),\n othIsWrapped = othIsObj && hasOwnProperty.call(other, '__wrapped__');\n\n if (objIsWrapped || othIsWrapped) {\n var objUnwrapped = objIsWrapped ? object.value() : object,\n othUnwrapped = othIsWrapped ? other.value() : other;\n\n stack || (stack = new Stack);\n return equalFunc(objUnwrapped, othUnwrapped, bitmask, customizer, stack);\n }\n }\n if (!isSameTag) {\n return false;\n }\n stack || (stack = new Stack);\n return equalObjects(object, other, bitmask, customizer, equalFunc, stack);\n }\n\n /**\n * The base implementation of `_.isMap` without Node.js optimizations.\n *\n * @private\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is a map, else `false`.\n */\n function baseIsMap(value) {\n return isObjectLike(value) && getTag(value) == mapTag;\n }\n\n /**\n * The base implementation of `_.isMatch` without support for iteratee shorthands.\n *\n * @private\n * @param {Object} object The object to inspect.\n * @param {Object} source The object of property values to match.\n * @param {Array} matchData The property names, values, and compare flags to match.\n * @param {Function} [customizer] The function to customize comparisons.\n * @returns {boolean} Returns `true` if `object` is a match, else `false`.\n */\n function baseIsMatch(object, source, matchData, customizer) {\n var index = matchData.length,\n length = index,\n noCustomizer = !customizer;\n\n if (object == null) {\n return !length;\n }\n object = Object(object);\n while (index--) {\n var data = matchData[index];\n if ((noCustomizer && data[2])\n ? data[1] !== object[data[0]]\n : !(data[0] in object)\n ) {\n return false;\n }\n }\n while (++index < length) {\n data = matchData[index];\n var key = data[0],\n objValue = object[key],\n srcValue = data[1];\n\n if (noCustomizer && data[2]) {\n if (objValue === undefined && !(key in object)) {\n return false;\n }\n } else {\n var stack = new Stack;\n if (customizer) {\n var result = customizer(objValue, srcValue, key, object, source, stack);\n }\n if (!(result === undefined\n ? baseIsEqual(srcValue, objValue, COMPARE_PARTIAL_FLAG | COMPARE_UNORDERED_FLAG, customizer, stack)\n : result\n )) {\n return false;\n }\n }\n }\n return true;\n }\n\n /**\n * The base implementation of `_.isNative` without bad shim checks.\n *\n * @private\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is a native function,\n * else `false`.\n */\n function baseIsNative(value) {\n if (!isObject(value) || isMasked(value)) {\n return false;\n }\n var pattern = isFunction(value) ? reIsNative : reIsHostCtor;\n return pattern.test(toSource(value));\n }\n\n /**\n * The base implementation of `_.isRegExp` without Node.js optimizations.\n *\n * @private\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is a regexp, else `false`.\n */\n function baseIsRegExp(value) {\n return isObjectLike(value) && baseGetTag(value) == regexpTag;\n }\n\n /**\n * The base implementation of `_.isSet` without Node.js optimizations.\n *\n * @private\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is a set, else `false`.\n */\n function baseIsSet(value) {\n return isObjectLike(value) && getTag(value) == setTag;\n }\n\n /**\n * The base implementation of `_.isTypedArray` without Node.js optimizations.\n *\n * @private\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is a typed array, else `false`.\n */\n function baseIsTypedArray(value) {\n return isObjectLike(value) &&\n isLength(value.length) && !!typedArrayTags[baseGetTag(value)];\n }\n\n /**\n * The base implementation of `_.iteratee`.\n *\n * @private\n * @param {*} [value=_.identity] The value to convert to an iteratee.\n * @returns {Function} Returns the iteratee.\n */\n function baseIteratee(value) {\n // Don't store the `typeof` result in a variable to avoid a JIT bug in Safari 9.\n // See https://bugs.webkit.org/show_bug.cgi?id=156034 for more details.\n if (typeof value == 'function') {\n return value;\n }\n if (value == null) {\n return identity;\n }\n if (typeof value == 'object') {\n return isArray(value)\n ? baseMatchesProperty(value[0], value[1])\n : baseMatches(value);\n }\n return property(value);\n }\n\n /**\n * The base implementation of `_.keys` which doesn't treat sparse arrays as dense.\n *\n * @private\n * @param {Object} object The object to query.\n * @returns {Array} Returns the array of property names.\n */\n function baseKeys(object) {\n if (!isPrototype(object)) {\n return nativeKeys(object);\n }\n var result = [];\n for (var key in Object(object)) {\n if (hasOwnProperty.call(object, key) && key != 'constructor') {\n result.push(key);\n }\n }\n return result;\n }\n\n /**\n * The base implementation of `_.keysIn` which doesn't treat sparse arrays as dense.\n *\n * @private\n * @param {Object} object The object to query.\n * @returns {Array} Returns the array of property names.\n */\n function baseKeysIn(object) {\n if (!isObject(object)) {\n return nativeKeysIn(object);\n }\n var isProto = isPrototype(object),\n result = [];\n\n for (var key in object) {\n if (!(key == 'constructor' && (isProto || !hasOwnProperty.call(object, key)))) {\n result.push(key);\n }\n }\n return result;\n }\n\n /**\n * The base implementation of `_.lt` which doesn't coerce arguments.\n *\n * @private\n * @param {*} value The value to compare.\n * @param {*} other The other value to compare.\n * @returns {boolean} Returns `true` if `value` is less than `other`,\n * else `false`.\n */\n function baseLt(value, other) {\n return value < other;\n }\n\n /**\n * The base implementation of `_.map` without support for iteratee shorthands.\n *\n * @private\n * @param {Array|Object} collection The collection to iterate over.\n * @param {Function} iteratee The function invoked per iteration.\n * @returns {Array} Returns the new mapped array.\n */\n function baseMap(collection, iteratee) {\n var index = -1,\n result = isArrayLike(collection) ? Array(collection.length) : [];\n\n baseEach(collection, function(value, key, collection) {\n result[++index] = iteratee(value, key, collection);\n });\n return result;\n }\n\n /**\n * The base implementation of `_.matches` which doesn't clone `source`.\n *\n * @private\n * @param {Object} source The object of property values to match.\n * @returns {Function} Returns the new spec function.\n */\n function baseMatches(source) {\n var matchData = getMatchData(source);\n if (matchData.length == 1 && matchData[0][2]) {\n return matchesStrictComparable(matchData[0][0], matchData[0][1]);\n }\n return function(object) {\n return object === source || baseIsMatch(object, source, matchData);\n };\n }\n\n /**\n * The base implementation of `_.matchesProperty` which doesn't clone `srcValue`.\n *\n * @private\n * @param {string} path The path of the property to get.\n * @param {*} srcValue The value to match.\n * @returns {Function} Returns the new spec function.\n */\n function baseMatchesProperty(path, srcValue) {\n if (isKey(path) && isStrictComparable(srcValue)) {\n return matchesStrictComparable(toKey(path), srcValue);\n }\n return function(object) {\n var objValue = get(object, path);\n return (objValue === undefined && objValue === srcValue)\n ? hasIn(object, path)\n : baseIsEqual(srcValue, objValue, COMPARE_PARTIAL_FLAG | COMPARE_UNORDERED_FLAG);\n };\n }\n\n /**\n * The base implementation of `_.merge` without support for multiple sources.\n *\n * @private\n * @param {Object} object The destination object.\n * @param {Object} source The source object.\n * @param {number} srcIndex The index of `source`.\n * @param {Function} [customizer] The function to customize merged values.\n * @param {Object} [stack] Tracks traversed source values and their merged\n * counterparts.\n */\n function baseMerge(object, source, srcIndex, customizer, stack) {\n if (object === source) {\n return;\n }\n baseFor(source, function(srcValue, key) {\n stack || (stack = new Stack);\n if (isObject(srcValue)) {\n baseMergeDeep(object, source, key, srcIndex, baseMerge, customizer, stack);\n }\n else {\n var newValue = customizer\n ? customizer(safeGet(object, key), srcValue, (key + ''), object, source, stack)\n : undefined;\n\n if (newValue === undefined) {\n newValue = srcValue;\n }\n assignMergeValue(object, key, newValue);\n }\n }, keysIn);\n }\n\n /**\n * A specialized version of `baseMerge` for arrays and objects which performs\n * deep merges and tracks traversed objects enabling objects with circular\n * references to be merged.\n *\n * @private\n * @param {Object} object The destination object.\n * @param {Object} source The source object.\n * @param {string} key The key of the value to merge.\n * @param {number} srcIndex The index of `source`.\n * @param {Function} mergeFunc The function to merge values.\n * @param {Function} [customizer] The function to customize assigned values.\n * @param {Object} [stack] Tracks traversed source values and their merged\n * counterparts.\n */\n function baseMergeDeep(object, source, key, srcIndex, mergeFunc, customizer, stack) {\n var objValue = safeGet(object, key),\n srcValue = safeGet(source, key),\n stacked = stack.get(srcValue);\n\n if (stacked) {\n assignMergeValue(object, key, stacked);\n return;\n }\n var newValue = customizer\n ? customizer(objValue, srcValue, (key + ''), object, source, stack)\n : undefined;\n\n var isCommon = newValue === undefined;\n\n if (isCommon) {\n var isArr = isArray(srcValue),\n isBuff = !isArr && isBuffer(srcValue),\n isTyped = !isArr && !isBuff && isTypedArray(srcValue);\n\n newValue = srcValue;\n if (isArr || isBuff || isTyped) {\n if (isArray(objValue)) {\n newValue = objValue;\n }\n else if (isArrayLikeObject(objValue)) {\n newValue = copyArray(objValue);\n }\n else if (isBuff) {\n isCommon = false;\n newValue = cloneBuffer(srcValue, true);\n }\n else if (isTyped) {\n isCommon = false;\n newValue = cloneTypedArray(srcValue, true);\n }\n else {\n newValue = [];\n }\n }\n else if (isPlainObject(srcValue) || isArguments(srcValue)) {\n newValue = objValue;\n if (isArguments(objValue)) {\n newValue = toPlainObject(objValue);\n }\n else if (!isObject(objValue) || isFunction(objValue)) {\n newValue = initCloneObject(srcValue);\n }\n }\n else {\n isCommon = false;\n }\n }\n if (isCommon) {\n // Recursively merge objects and arrays (susceptible to call stack limits).\n stack.set(srcValue, newValue);\n mergeFunc(newValue, srcValue, srcIndex, customizer, stack);\n stack['delete'](srcValue);\n }\n assignMergeValue(object, key, newValue);\n }\n\n /**\n * The base implementation of `_.nth` which doesn't coerce arguments.\n *\n * @private\n * @param {Array} array The array to query.\n * @param {number} n The index of the element to return.\n * @returns {*} Returns the nth element of `array`.\n */\n function baseNth(array, n) {\n var length = array.length;\n if (!length) {\n return;\n }\n n += n < 0 ? length : 0;\n return isIndex(n, length) ? array[n] : undefined;\n }\n\n /**\n * The base implementation of `_.orderBy` without param guards.\n *\n * @private\n * @param {Array|Object} collection The collection to iterate over.\n * @param {Function[]|Object[]|string[]} iteratees The iteratees to sort by.\n * @param {string[]} orders The sort orders of `iteratees`.\n * @returns {Array} Returns the new sorted array.\n */\n function baseOrderBy(collection, iteratees, orders) {\n if (iteratees.length) {\n iteratees = arrayMap(iteratees, function(iteratee) {\n if (isArray(iteratee)) {\n return function(value) {\n return baseGet(value, iteratee.length === 1 ? iteratee[0] : iteratee);\n }\n }\n return iteratee;\n });\n } else {\n iteratees = [identity];\n }\n\n var index = -1;\n iteratees = arrayMap(iteratees, baseUnary(getIteratee()));\n\n var result = baseMap(collection, function(value, key, collection) {\n var criteria = arrayMap(iteratees, function(iteratee) {\n return iteratee(value);\n });\n return { 'criteria': criteria, 'index': ++index, 'value': value };\n });\n\n return baseSortBy(result, function(object, other) {\n return compareMultiple(object, other, orders);\n });\n }\n\n /**\n * The base implementation of `_.pick` without support for individual\n * property identifiers.\n *\n * @private\n * @param {Object} object The source object.\n * @param {string[]} paths The property paths to pick.\n * @returns {Object} Returns the new object.\n */\n function basePick(object, paths) {\n return basePickBy(object, paths, function(value, path) {\n return hasIn(object, path);\n });\n }\n\n /**\n * The base implementation of `_.pickBy` without support for iteratee shorthands.\n *\n * @private\n * @param {Object} object The source object.\n * @param {string[]} paths The property paths to pick.\n * @param {Function} predicate The function invoked per property.\n * @returns {Object} Returns the new object.\n */\n function basePickBy(object, paths, predicate) {\n var index = -1,\n length = paths.length,\n result = {};\n\n while (++index < length) {\n var path = paths[index],\n value = baseGet(object, path);\n\n if (predicate(value, path)) {\n baseSet(result, castPath(path, object), value);\n }\n }\n return result;\n }\n\n /**\n * A specialized version of `baseProperty` which supports deep paths.\n *\n * @private\n * @param {Array|string} path The path of the property to get.\n * @returns {Function} Returns the new accessor function.\n */\n function basePropertyDeep(path) {\n return function(object) {\n return baseGet(object, path);\n };\n }\n\n /**\n * The base implementation of `_.pullAllBy` without support for iteratee\n * shorthands.\n *\n * @private\n * @param {Array} array The array to modify.\n * @param {Array} values The values to remove.\n * @param {Function} [iteratee] The iteratee invoked per element.\n * @param {Function} [comparator] The comparator invoked per element.\n * @returns {Array} Returns `array`.\n */\n function basePullAll(array, values, iteratee, comparator) {\n var indexOf = comparator ? baseIndexOfWith : baseIndexOf,\n index = -1,\n length = values.length,\n seen = array;\n\n if (array === values) {\n values = copyArray(values);\n }\n if (iteratee) {\n seen = arrayMap(array, baseUnary(iteratee));\n }\n while (++index < length) {\n var fromIndex = 0,\n value = values[index],\n computed = iteratee ? iteratee(value) : value;\n\n while ((fromIndex = indexOf(seen, computed, fromIndex, comparator)) > -1) {\n if (seen !== array) {\n splice.call(seen, fromIndex, 1);\n }\n splice.call(array, fromIndex, 1);\n }\n }\n return array;\n }\n\n /**\n * The base implementation of `_.pullAt` without support for individual\n * indexes or capturing the removed elements.\n *\n * @private\n * @param {Array} array The array to modify.\n * @param {number[]} indexes The indexes of elements to remove.\n * @returns {Array} Returns `array`.\n */\n function basePullAt(array, indexes) {\n var length = array ? indexes.length : 0,\n lastIndex = length - 1;\n\n while (length--) {\n var index = indexes[length];\n if (length == lastIndex || index !== previous) {\n var previous = index;\n if (isIndex(index)) {\n splice.call(array, index, 1);\n } else {\n baseUnset(array, index);\n }\n }\n }\n return array;\n }\n\n /**\n * The base implementation of `_.random` without support for returning\n * floating-point numbers.\n *\n * @private\n * @param {number} lower The lower bound.\n * @param {number} upper The upper bound.\n * @returns {number} Returns the random number.\n */\n function baseRandom(lower, upper) {\n return lower + nativeFloor(nativeRandom() * (upper - lower + 1));\n }\n\n /**\n * The base implementation of `_.range` and `_.rangeRight` which doesn't\n * coerce arguments.\n *\n * @private\n * @param {number} start The start of the range.\n * @param {number} end The end of the range.\n * @param {number} step The value to increment or decrement by.\n * @param {boolean} [fromRight] Specify iterating from right to left.\n * @returns {Array} Returns the range of numbers.\n */\n function baseRange(start, end, step, fromRight) {\n var index = -1,\n length = nativeMax(nativeCeil((end - start) / (step || 1)), 0),\n result = Array(length);\n\n while (length--) {\n result[fromRight ? length : ++index] = start;\n start += step;\n }\n return result;\n }\n\n /**\n * The base implementation of `_.repeat` which doesn't coerce arguments.\n *\n * @private\n * @param {string} string The string to repeat.\n * @param {number} n The number of times to repeat the string.\n * @returns {string} Returns the repeated string.\n */\n function baseRepeat(string, n) {\n var result = '';\n if (!string || n < 1 || n > MAX_SAFE_INTEGER) {\n return result;\n }\n // Leverage the exponentiation by squaring algorithm for a faster repeat.\n // See https://en.wikipedia.org/wiki/Exponentiation_by_squaring for more details.\n do {\n if (n % 2) {\n result += string;\n }\n n = nativeFloor(n / 2);\n if (n) {\n string += string;\n }\n } while (n);\n\n return result;\n }\n\n /**\n * The base implementation of `_.rest` which doesn't validate or coerce arguments.\n *\n * @private\n * @param {Function} func The function to apply a rest parameter to.\n * @param {number} [start=func.length-1] The start position of the rest parameter.\n * @returns {Function} Returns the new function.\n */\n function baseRest(func, start) {\n return setToString(overRest(func, start, identity), func + '');\n }\n\n /**\n * The base implementation of `_.sample`.\n *\n * @private\n * @param {Array|Object} collection The collection to sample.\n * @returns {*} Returns the random element.\n */\n function baseSample(collection) {\n return arraySample(values(collection));\n }\n\n /**\n * The base implementation of `_.sampleSize` without param guards.\n *\n * @private\n * @param {Array|Object} collection The collection to sample.\n * @param {number} n The number of elements to sample.\n * @returns {Array} Returns the random elements.\n */\n function baseSampleSize(collection, n) {\n var array = values(collection);\n return shuffleSelf(array, baseClamp(n, 0, array.length));\n }\n\n /**\n * The base implementation of `_.set`.\n *\n * @private\n * @param {Object} object The object to modify.\n * @param {Array|string} path The path of the property to set.\n * @param {*} value The value to set.\n * @param {Function} [customizer] The function to customize path creation.\n * @returns {Object} Returns `object`.\n */\n function baseSet(object, path, value, customizer) {\n if (!isObject(object)) {\n return object;\n }\n path = castPath(path, object);\n\n var index = -1,\n length = path.length,\n lastIndex = length - 1,\n nested = object;\n\n while (nested != null && ++index < length) {\n var key = toKey(path[index]),\n newValue = value;\n\n if (key === '__proto__' || key === 'constructor' || key === 'prototype') {\n return object;\n }\n\n if (index != lastIndex) {\n var objValue = nested[key];\n newValue = customizer ? customizer(objValue, key, nested) : undefined;\n if (newValue === undefined) {\n newValue = isObject(objValue)\n ? objValue\n : (isIndex(path[index + 1]) ? [] : {});\n }\n }\n assignValue(nested, key, newValue);\n nested = nested[key];\n }\n return object;\n }\n\n /**\n * The base implementation of `setData` without support for hot loop shorting.\n *\n * @private\n * @param {Function} func The function to associate metadata with.\n * @param {*} data The metadata.\n * @returns {Function} Returns `func`.\n */\n var baseSetData = !metaMap ? identity : function(func, data) {\n metaMap.set(func, data);\n return func;\n };\n\n /**\n * The base implementation of `setToString` without support for hot loop shorting.\n *\n * @private\n * @param {Function} func The function to modify.\n * @param {Function} string The `toString` result.\n * @returns {Function} Returns `func`.\n */\n var baseSetToString = !defineProperty ? identity : function(func, string) {\n return defineProperty(func, 'toString', {\n 'configurable': true,\n 'enumerable': false,\n 'value': constant(string),\n 'writable': true\n });\n };\n\n /**\n * The base implementation of `_.shuffle`.\n *\n * @private\n * @param {Array|Object} collection The collection to shuffle.\n * @returns {Array} Returns the new shuffled array.\n */\n function baseShuffle(collection) {\n return shuffleSelf(values(collection));\n }\n\n /**\n * The base implementation of `_.slice` without an iteratee call guard.\n *\n * @private\n * @param {Array} array The array to slice.\n * @param {number} [start=0] The start position.\n * @param {number} [end=array.length] The end position.\n * @returns {Array} Returns the slice of `array`.\n */\n function baseSlice(array, start, end) {\n var index = -1,\n length = array.length;\n\n if (start < 0) {\n start = -start > length ? 0 : (length + start);\n }\n end = end > length ? length : end;\n if (end < 0) {\n end += length;\n }\n length = start > end ? 0 : ((end - start) >>> 0);\n start >>>= 0;\n\n var result = Array(length);\n while (++index < length) {\n result[index] = array[index + start];\n }\n return result;\n }\n\n /**\n * The base implementation of `_.some` without support for iteratee shorthands.\n *\n * @private\n * @param {Array|Object} collection The collection to iterate over.\n * @param {Function} predicate The function invoked per iteration.\n * @returns {boolean} Returns `true` if any element passes the predicate check,\n * else `false`.\n */\n function baseSome(collection, predicate) {\n var result;\n\n baseEach(collection, function(value, index, collection) {\n result = predicate(value, index, collection);\n return !result;\n });\n return !!result;\n }\n\n /**\n * The base implementation of `_.sortedIndex` and `_.sortedLastIndex` which\n * performs a binary search of `array` to determine the index at which `value`\n * should be inserted into `array` in order to maintain its sort order.\n *\n * @private\n * @param {Array} array The sorted array to inspect.\n * @param {*} value The value to evaluate.\n * @param {boolean} [retHighest] Specify returning the highest qualified index.\n * @returns {number} Returns the index at which `value` should be inserted\n * into `array`.\n */\n function baseSortedIndex(array, value, retHighest) {\n var low = 0,\n high = array == null ? low : array.length;\n\n if (typeof value == 'number' && value === value && high <= HALF_MAX_ARRAY_LENGTH) {\n while (low < high) {\n var mid = (low + high) >>> 1,\n computed = array[mid];\n\n if (computed !== null && !isSymbol(computed) &&\n (retHighest ? (computed <= value) : (computed < value))) {\n low = mid + 1;\n } else {\n high = mid;\n }\n }\n return high;\n }\n return baseSortedIndexBy(array, value, identity, retHighest);\n }\n\n /**\n * The base implementation of `_.sortedIndexBy` and `_.sortedLastIndexBy`\n * which invokes `iteratee` for `value` and each element of `array` to compute\n * their sort ranking. The iteratee is invoked with one argument; (value).\n *\n * @private\n * @param {Array} array The sorted array to inspect.\n * @param {*} value The value to evaluate.\n * @param {Function} iteratee The iteratee invoked per element.\n * @param {boolean} [retHighest] Specify returning the highest qualified index.\n * @returns {number} Returns the index at which `value` should be inserted\n * into `array`.\n */\n function baseSortedIndexBy(array, value, iteratee, retHighest) {\n var low = 0,\n high = array == null ? 0 : array.length;\n if (high === 0) {\n return 0;\n }\n\n value = iteratee(value);\n var valIsNaN = value !== value,\n valIsNull = value === null,\n valIsSymbol = isSymbol(value),\n valIsUndefined = value === undefined;\n\n while (low < high) {\n var mid = nativeFloor((low + high) / 2),\n computed = iteratee(array[mid]),\n othIsDefined = computed !== undefined,\n othIsNull = computed === null,\n othIsReflexive = computed === computed,\n othIsSymbol = isSymbol(computed);\n\n if (valIsNaN) {\n var setLow = retHighest || othIsReflexive;\n } else if (valIsUndefined) {\n setLow = othIsReflexive && (retHighest || othIsDefined);\n } else if (valIsNull) {\n setLow = othIsReflexive && othIsDefined && (retHighest || !othIsNull);\n } else if (valIsSymbol) {\n setLow = othIsReflexive && othIsDefined && !othIsNull && (retHighest || !othIsSymbol);\n } else if (othIsNull || othIsSymbol) {\n setLow = false;\n } else {\n setLow = retHighest ? (computed <= value) : (computed < value);\n }\n if (setLow) {\n low = mid + 1;\n } else {\n high = mid;\n }\n }\n return nativeMin(high, MAX_ARRAY_INDEX);\n }\n\n /**\n * The base implementation of `_.sortedUniq` and `_.sortedUniqBy` without\n * support for iteratee shorthands.\n *\n * @private\n * @param {Array} array The array to inspect.\n * @param {Function} [iteratee] The iteratee invoked per element.\n * @returns {Array} Returns the new duplicate free array.\n */\n function baseSortedUniq(array, iteratee) {\n var index = -1,\n length = array.length,\n resIndex = 0,\n result = [];\n\n while (++index < length) {\n var value = array[index],\n computed = iteratee ? iteratee(value) : value;\n\n if (!index || !eq(computed, seen)) {\n var seen = computed;\n result[resIndex++] = value === 0 ? 0 : value;\n }\n }\n return result;\n }\n\n /**\n * The base implementation of `_.toNumber` which doesn't ensure correct\n * conversions of binary, hexadecimal, or octal string values.\n *\n * @private\n * @param {*} value The value to process.\n * @returns {number} Returns the number.\n */\n function baseToNumber(value) {\n if (typeof value == 'number') {\n return value;\n }\n if (isSymbol(value)) {\n return NAN;\n }\n return +value;\n }\n\n /**\n * The base implementation of `_.toString` which doesn't convert nullish\n * values to empty strings.\n *\n * @private\n * @param {*} value The value to process.\n * @returns {string} Returns the string.\n */\n function baseToString(value) {\n // Exit early for strings to avoid a performance hit in some environments.\n if (typeof value == 'string') {\n return value;\n }\n if (isArray(value)) {\n // Recursively convert values (susceptible to call stack limits).\n return arrayMap(value, baseToString) + '';\n }\n if (isSymbol(value)) {\n return symbolToString ? symbolToString.call(value) : '';\n }\n var result = (value + '');\n return (result == '0' && (1 / value) == -INFINITY) ? '-0' : result;\n }\n\n /**\n * The base implementation of `_.uniqBy` without support for iteratee shorthands.\n *\n * @private\n * @param {Array} array The array to inspect.\n * @param {Function} [iteratee] The iteratee invoked per element.\n * @param {Function} [comparator] The comparator invoked per element.\n * @returns {Array} Returns the new duplicate free array.\n */\n function baseUniq(array, iteratee, comparator) {\n var index = -1,\n includes = arrayIncludes,\n length = array.length,\n isCommon = true,\n result = [],\n seen = result;\n\n if (comparator) {\n isCommon = false;\n includes = arrayIncludesWith;\n }\n else if (length >= LARGE_ARRAY_SIZE) {\n var set = iteratee ? null : createSet(array);\n if (set) {\n return setToArray(set);\n }\n isCommon = false;\n includes = cacheHas;\n seen = new SetCache;\n }\n else {\n seen = iteratee ? [] : result;\n }\n outer:\n while (++index < length) {\n var value = array[index],\n computed = iteratee ? iteratee(value) : value;\n\n value = (comparator || value !== 0) ? value : 0;\n if (isCommon && computed === computed) {\n var seenIndex = seen.length;\n while (seenIndex--) {\n if (seen[seenIndex] === computed) {\n continue outer;\n }\n }\n if (iteratee) {\n seen.push(computed);\n }\n result.push(value);\n }\n else if (!includes(seen, computed, comparator)) {\n if (seen !== result) {\n seen.push(computed);\n }\n result.push(value);\n }\n }\n return result;\n }\n\n /**\n * The base implementation of `_.unset`.\n *\n * @private\n * @param {Object} object The object to modify.\n * @param {Array|string} path The property path to unset.\n * @returns {boolean} Returns `true` if the property is deleted, else `false`.\n */\n function baseUnset(object, path) {\n path = castPath(path, object);\n object = parent(object, path);\n return object == null || delete object[toKey(last(path))];\n }\n\n /**\n * The base implementation of `_.update`.\n *\n * @private\n * @param {Object} object The object to modify.\n * @param {Array|string} path The path of the property to update.\n * @param {Function} updater The function to produce the updated value.\n * @param {Function} [customizer] The function to customize path creation.\n * @returns {Object} Returns `object`.\n */\n function baseUpdate(object, path, updater, customizer) {\n return baseSet(object, path, updater(baseGet(object, path)), customizer);\n }\n\n /**\n * The base implementation of methods like `_.dropWhile` and `_.takeWhile`\n * without support for iteratee shorthands.\n *\n * @private\n * @param {Array} array The array to query.\n * @param {Function} predicate The function invoked per iteration.\n * @param {boolean} [isDrop] Specify dropping elements instead of taking them.\n * @param {boolean} [fromRight] Specify iterating from right to left.\n * @returns {Array} Returns the slice of `array`.\n */\n function baseWhile(array, predicate, isDrop, fromRight) {\n var length = array.length,\n index = fromRight ? length : -1;\n\n while ((fromRight ? index-- : ++index < length) &&\n predicate(array[index], index, array)) {}\n\n return isDrop\n ? baseSlice(array, (fromRight ? 0 : index), (fromRight ? index + 1 : length))\n : baseSlice(array, (fromRight ? index + 1 : 0), (fromRight ? length : index));\n }\n\n /**\n * The base implementation of `wrapperValue` which returns the result of\n * performing a sequence of actions on the unwrapped `value`, where each\n * successive action is supplied the return value of the previous.\n *\n * @private\n * @param {*} value The unwrapped value.\n * @param {Array} actions Actions to perform to resolve the unwrapped value.\n * @returns {*} Returns the resolved value.\n */\n function baseWrapperValue(value, actions) {\n var result = value;\n if (result instanceof LazyWrapper) {\n result = result.value();\n }\n return arrayReduce(actions, function(result, action) {\n return action.func.apply(action.thisArg, arrayPush([result], action.args));\n }, result);\n }\n\n /**\n * The base implementation of methods like `_.xor`, without support for\n * iteratee shorthands, that accepts an array of arrays to inspect.\n *\n * @private\n * @param {Array} arrays The arrays to inspect.\n * @param {Function} [iteratee] The iteratee invoked per element.\n * @param {Function} [comparator] The comparator invoked per element.\n * @returns {Array} Returns the new array of values.\n */\n function baseXor(arrays, iteratee, comparator) {\n var length = arrays.length;\n if (length < 2) {\n return length ? baseUniq(arrays[0]) : [];\n }\n var index = -1,\n result = Array(length);\n\n while (++index < length) {\n var array = arrays[index],\n othIndex = -1;\n\n while (++othIndex < length) {\n if (othIndex != index) {\n result[index] = baseDifference(result[index] || array, arrays[othIndex], iteratee, comparator);\n }\n }\n }\n return baseUniq(baseFlatten(result, 1), iteratee, comparator);\n }\n\n /**\n * This base implementation of `_.zipObject` which assigns values using `assignFunc`.\n *\n * @private\n * @param {Array} props The property identifiers.\n * @param {Array} values The property values.\n * @param {Function} assignFunc The function to assign values.\n * @returns {Object} Returns the new object.\n */\n function baseZipObject(props, values, assignFunc) {\n var index = -1,\n length = props.length,\n valsLength = values.length,\n result = {};\n\n while (++index < length) {\n var value = index < valsLength ? values[index] : undefined;\n assignFunc(result, props[index], value);\n }\n return result;\n }\n\n /**\n * Casts `value` to an empty array if it's not an array like object.\n *\n * @private\n * @param {*} value The value to inspect.\n * @returns {Array|Object} Returns the cast array-like object.\n */\n function castArrayLikeObject(value) {\n return isArrayLikeObject(value) ? value : [];\n }\n\n /**\n * Casts `value` to `identity` if it's not a function.\n *\n * @private\n * @param {*} value The value to inspect.\n * @returns {Function} Returns cast function.\n */\n function castFunction(value) {\n return typeof value == 'function' ? value : identity;\n }\n\n /**\n * Casts `value` to a path array if it's not one.\n *\n * @private\n * @param {*} value The value to inspect.\n * @param {Object} [object] The object to query keys on.\n * @returns {Array} Returns the cast property path array.\n */\n function castPath(value, object) {\n if (isArray(value)) {\n return value;\n }\n return isKey(value, object) ? [value] : stringToPath(toString(value));\n }\n\n /**\n * A `baseRest` alias which can be replaced with `identity` by module\n * replacement plugins.\n *\n * @private\n * @type {Function}\n * @param {Function} func The function to apply a rest parameter to.\n * @returns {Function} Returns the new function.\n */\n var castRest = baseRest;\n\n /**\n * Casts `array` to a slice if it's needed.\n *\n * @private\n * @param {Array} array The array to inspect.\n * @param {number} start The start position.\n * @param {number} [end=array.length] The end position.\n * @returns {Array} Returns the cast slice.\n */\n function castSlice(array, start, end) {\n var length = array.length;\n end = end === undefined ? length : end;\n return (!start && end >= length) ? array : baseSlice(array, start, end);\n }\n\n /**\n * A simple wrapper around the global [`clearTimeout`](https://mdn.io/clearTimeout).\n *\n * @private\n * @param {number|Object} id The timer id or timeout object of the timer to clear.\n */\n var clearTimeout = ctxClearTimeout || function(id) {\n return root.clearTimeout(id);\n };\n\n /**\n * Creates a clone of `buffer`.\n *\n * @private\n * @param {Buffer} buffer The buffer to clone.\n * @param {boolean} [isDeep] Specify a deep clone.\n * @returns {Buffer} Returns the cloned buffer.\n */\n function cloneBuffer(buffer, isDeep) {\n if (isDeep) {\n return buffer.slice();\n }\n var length = buffer.length,\n result = allocUnsafe ? allocUnsafe(length) : new buffer.constructor(length);\n\n buffer.copy(result);\n return result;\n }\n\n /**\n * Creates a clone of `arrayBuffer`.\n *\n * @private\n * @param {ArrayBuffer} arrayBuffer The array buffer to clone.\n * @returns {ArrayBuffer} Returns the cloned array buffer.\n */\n function cloneArrayBuffer(arrayBuffer) {\n var result = new arrayBuffer.constructor(arrayBuffer.byteLength);\n new Uint8Array(result).set(new Uint8Array(arrayBuffer));\n return result;\n }\n\n /**\n * Creates a clone of `dataView`.\n *\n * @private\n * @param {Object} dataView The data view to clone.\n * @param {boolean} [isDeep] Specify a deep clone.\n * @returns {Object} Returns the cloned data view.\n */\n function cloneDataView(dataView, isDeep) {\n var buffer = isDeep ? cloneArrayBuffer(dataView.buffer) : dataView.buffer;\n return new dataView.constructor(buffer, dataView.byteOffset, dataView.byteLength);\n }\n\n /**\n * Creates a clone of `regexp`.\n *\n * @private\n * @param {Object} regexp The regexp to clone.\n * @returns {Object} Returns the cloned regexp.\n */\n function cloneRegExp(regexp) {\n var result = new regexp.constructor(regexp.source, reFlags.exec(regexp));\n result.lastIndex = regexp.lastIndex;\n return result;\n }\n\n /**\n * Creates a clone of the `symbol` object.\n *\n * @private\n * @param {Object} symbol The symbol object to clone.\n * @returns {Object} Returns the cloned symbol object.\n */\n function cloneSymbol(symbol) {\n return symbolValueOf ? Object(symbolValueOf.call(symbol)) : {};\n }\n\n /**\n * Creates a clone of `typedArray`.\n *\n * @private\n * @param {Object} typedArray The typed array to clone.\n * @param {boolean} [isDeep] Specify a deep clone.\n * @returns {Object} Returns the cloned typed array.\n */\n function cloneTypedArray(typedArray, isDeep) {\n var buffer = isDeep ? cloneArrayBuffer(typedArray.buffer) : typedArray.buffer;\n return new typedArray.constructor(buffer, typedArray.byteOffset, typedArray.length);\n }\n\n /**\n * Compares values to sort them in ascending order.\n *\n * @private\n * @param {*} value The value to compare.\n * @param {*} other The other value to compare.\n * @returns {number} Returns the sort order indicator for `value`.\n */\n function compareAscending(value, other) {\n if (value !== other) {\n var valIsDefined = value !== undefined,\n valIsNull = value === null,\n valIsReflexive = value === value,\n valIsSymbol = isSymbol(value);\n\n var othIsDefined = other !== undefined,\n othIsNull = other === null,\n othIsReflexive = other === other,\n othIsSymbol = isSymbol(other);\n\n if ((!othIsNull && !othIsSymbol && !valIsSymbol && value > other) ||\n (valIsSymbol && othIsDefined && othIsReflexive && !othIsNull && !othIsSymbol) ||\n (valIsNull && othIsDefined && othIsReflexive) ||\n (!valIsDefined && othIsReflexive) ||\n !valIsReflexive) {\n return 1;\n }\n if ((!valIsNull && !valIsSymbol && !othIsSymbol && value < other) ||\n (othIsSymbol && valIsDefined && valIsReflexive && !valIsNull && !valIsSymbol) ||\n (othIsNull && valIsDefined && valIsReflexive) ||\n (!othIsDefined && valIsReflexive) ||\n !othIsReflexive) {\n return -1;\n }\n }\n return 0;\n }\n\n /**\n * Used by `_.orderBy` to compare multiple properties of a value to another\n * and stable sort them.\n *\n * If `orders` is unspecified, all values are sorted in ascending order. Otherwise,\n * specify an order of \"desc\" for descending or \"asc\" for ascending sort order\n * of corresponding values.\n *\n * @private\n * @param {Object} object The object to compare.\n * @param {Object} other The other object to compare.\n * @param {boolean[]|string[]} orders The order to sort by for each property.\n * @returns {number} Returns the sort order indicator for `object`.\n */\n function compareMultiple(object, other, orders) {\n var index = -1,\n objCriteria = object.criteria,\n othCriteria = other.criteria,\n length = objCriteria.length,\n ordersLength = orders.length;\n\n while (++index < length) {\n var result = compareAscending(objCriteria[index], othCriteria[index]);\n if (result) {\n if (index >= ordersLength) {\n return result;\n }\n var order = orders[index];\n return result * (order == 'desc' ? -1 : 1);\n }\n }\n // Fixes an `Array#sort` bug in the JS engine embedded in Adobe applications\n // that causes it, under certain circumstances, to provide the same value for\n // `object` and `other`. See https://github.com/jashkenas/underscore/pull/1247\n // for more details.\n //\n // This also ensures a stable sort in V8 and other engines.\n // See https://bugs.chromium.org/p/v8/issues/detail?id=90 for more details.\n return object.index - other.index;\n }\n\n /**\n * Creates an array that is the composition of partially applied arguments,\n * placeholders, and provided arguments into a single array of arguments.\n *\n * @private\n * @param {Array} args The provided arguments.\n * @param {Array} partials The arguments to prepend to those provided.\n * @param {Array} holders The `partials` placeholder indexes.\n * @params {boolean} [isCurried] Specify composing for a curried function.\n * @returns {Array} Returns the new array of composed arguments.\n */\n function composeArgs(args, partials, holders, isCurried) {\n var argsIndex = -1,\n argsLength = args.length,\n holdersLength = holders.length,\n leftIndex = -1,\n leftLength = partials.length,\n rangeLength = nativeMax(argsLength - holdersLength, 0),\n result = Array(leftLength + rangeLength),\n isUncurried = !isCurried;\n\n while (++leftIndex < leftLength) {\n result[leftIndex] = partials[leftIndex];\n }\n while (++argsIndex < holdersLength) {\n if (isUncurried || argsIndex < argsLength) {\n result[holders[argsIndex]] = args[argsIndex];\n }\n }\n while (rangeLength--) {\n result[leftIndex++] = args[argsIndex++];\n }\n return result;\n }\n\n /**\n * This function is like `composeArgs` except that the arguments composition\n * is tailored for `_.partialRight`.\n *\n * @private\n * @param {Array} args The provided arguments.\n * @param {Array} partials The arguments to append to those provided.\n * @param {Array} holders The `partials` placeholder indexes.\n * @params {boolean} [isCurried] Specify composing for a curried function.\n * @returns {Array} Returns the new array of composed arguments.\n */\n function composeArgsRight(args, partials, holders, isCurried) {\n var argsIndex = -1,\n argsLength = args.length,\n holdersIndex = -1,\n holdersLength = holders.length,\n rightIndex = -1,\n rightLength = partials.length,\n rangeLength = nativeMax(argsLength - holdersLength, 0),\n result = Array(rangeLength + rightLength),\n isUncurried = !isCurried;\n\n while (++argsIndex < rangeLength) {\n result[argsIndex] = args[argsIndex];\n }\n var offset = argsIndex;\n while (++rightIndex < rightLength) {\n result[offset + rightIndex] = partials[rightIndex];\n }\n while (++holdersIndex < holdersLength) {\n if (isUncurried || argsIndex < argsLength) {\n result[offset + holders[holdersIndex]] = args[argsIndex++];\n }\n }\n return result;\n }\n\n /**\n * Copies the values of `source` to `array`.\n *\n * @private\n * @param {Array} source The array to copy values from.\n * @param {Array} [array=[]] The array to copy values to.\n * @returns {Array} Returns `array`.\n */\n function copyArray(source, array) {\n var index = -1,\n length = source.length;\n\n array || (array = Array(length));\n while (++index < length) {\n array[index] = source[index];\n }\n return array;\n }\n\n /**\n * Copies properties of `source` to `object`.\n *\n * @private\n * @param {Object} source The object to copy properties from.\n * @param {Array} props The property identifiers to copy.\n * @param {Object} [object={}] The object to copy properties to.\n * @param {Function} [customizer] The function to customize copied values.\n * @returns {Object} Returns `object`.\n */\n function copyObject(source, props, object, customizer) {\n var isNew = !object;\n object || (object = {});\n\n var index = -1,\n length = props.length;\n\n while (++index < length) {\n var key = props[index];\n\n var newValue = customizer\n ? customizer(object[key], source[key], key, object, source)\n : undefined;\n\n if (newValue === undefined) {\n newValue = source[key];\n }\n if (isNew) {\n baseAssignValue(object, key, newValue);\n } else {\n assignValue(object, key, newValue);\n }\n }\n return object;\n }\n\n /**\n * Copies own symbols of `source` to `object`.\n *\n * @private\n * @param {Object} source The object to copy symbols from.\n * @param {Object} [object={}] The object to copy symbols to.\n * @returns {Object} Returns `object`.\n */\n function copySymbols(source, object) {\n return copyObject(source, getSymbols(source), object);\n }\n\n /**\n * Copies own and inherited symbols of `source` to `object`.\n *\n * @private\n * @param {Object} source The object to copy symbols from.\n * @param {Object} [object={}] The object to copy symbols to.\n * @returns {Object} Returns `object`.\n */\n function copySymbolsIn(source, object) {\n return copyObject(source, getSymbolsIn(source), object);\n }\n\n /**\n * Creates a function like `_.groupBy`.\n *\n * @private\n * @param {Function} setter The function to set accumulator values.\n * @param {Function} [initializer] The accumulator object initializer.\n * @returns {Function} Returns the new aggregator function.\n */\n function createAggregator(setter, initializer) {\n return function(collection, iteratee) {\n var func = isArray(collection) ? arrayAggregator : baseAggregator,\n accumulator = initializer ? initializer() : {};\n\n return func(collection, setter, getIteratee(iteratee, 2), accumulator);\n };\n }\n\n /**\n * Creates a function like `_.assign`.\n *\n * @private\n * @param {Function} assigner The function to assign values.\n * @returns {Function} Returns the new assigner function.\n */\n function createAssigner(assigner) {\n return baseRest(function(object, sources) {\n var index = -1,\n length = sources.length,\n customizer = length > 1 ? sources[length - 1] : undefined,\n guard = length > 2 ? sources[2] : undefined;\n\n customizer = (assigner.length > 3 && typeof customizer == 'function')\n ? (length--, customizer)\n : undefined;\n\n if (guard && isIterateeCall(sources[0], sources[1], guard)) {\n customizer = length < 3 ? undefined : customizer;\n length = 1;\n }\n object = Object(object);\n while (++index < length) {\n var source = sources[index];\n if (source) {\n assigner(object, source, index, customizer);\n }\n }\n return object;\n });\n }\n\n /**\n * Creates a `baseEach` or `baseEachRight` function.\n *\n * @private\n * @param {Function} eachFunc The function to iterate over a collection.\n * @param {boolean} [fromRight] Specify iterating from right to left.\n * @returns {Function} Returns the new base function.\n */\n function createBaseEach(eachFunc, fromRight) {\n return function(collection, iteratee) {\n if (collection == null) {\n return collection;\n }\n if (!isArrayLike(collection)) {\n return eachFunc(collection, iteratee);\n }\n var length = collection.length,\n index = fromRight ? length : -1,\n iterable = Object(collection);\n\n while ((fromRight ? index-- : ++index < length)) {\n if (iteratee(iterable[index], index, iterable) === false) {\n break;\n }\n }\n return collection;\n };\n }\n\n /**\n * Creates a base function for methods like `_.forIn` and `_.forOwn`.\n *\n * @private\n * @param {boolean} [fromRight] Specify iterating from right to left.\n * @returns {Function} Returns the new base function.\n */\n function createBaseFor(fromRight) {\n return function(object, iteratee, keysFunc) {\n var index = -1,\n iterable = Object(object),\n props = keysFunc(object),\n length = props.length;\n\n while (length--) {\n var key = props[fromRight ? length : ++index];\n if (iteratee(iterable[key], key, iterable) === false) {\n break;\n }\n }\n return object;\n };\n }\n\n /**\n * Creates a function that wraps `func` to invoke it with the optional `this`\n * binding of `thisArg`.\n *\n * @private\n * @param {Function} func The function to wrap.\n * @param {number} bitmask The bitmask flags. See `createWrap` for more details.\n * @param {*} [thisArg] The `this` binding of `func`.\n * @returns {Function} Returns the new wrapped function.\n */\n function createBind(func, bitmask, thisArg) {\n var isBind = bitmask & WRAP_BIND_FLAG,\n Ctor = createCtor(func);\n\n function wrapper() {\n var fn = (this && this !== root && this instanceof wrapper) ? Ctor : func;\n return fn.apply(isBind ? thisArg : this, arguments);\n }\n return wrapper;\n }\n\n /**\n * Creates a function like `_.lowerFirst`.\n *\n * @private\n * @param {string} methodName The name of the `String` case method to use.\n * @returns {Function} Returns the new case function.\n */\n function createCaseFirst(methodName) {\n return function(string) {\n string = toString(string);\n\n var strSymbols = hasUnicode(string)\n ? stringToArray(string)\n : undefined;\n\n var chr = strSymbols\n ? strSymbols[0]\n : string.charAt(0);\n\n var trailing = strSymbols\n ? castSlice(strSymbols, 1).join('')\n : string.slice(1);\n\n return chr[methodName]() + trailing;\n };\n }\n\n /**\n * Creates a function like `_.camelCase`.\n *\n * @private\n * @param {Function} callback The function to combine each word.\n * @returns {Function} Returns the new compounder function.\n */\n function createCompounder(callback) {\n return function(string) {\n return arrayReduce(words(deburr(string).replace(reApos, '')), callback, '');\n };\n }\n\n /**\n * Creates a function that produces an instance of `Ctor` regardless of\n * whether it was invoked as part of a `new` expression or by `call` or `apply`.\n *\n * @private\n * @param {Function} Ctor The constructor to wrap.\n * @returns {Function} Returns the new wrapped function.\n */\n function createCtor(Ctor) {\n return function() {\n // Use a `switch` statement to work with class constructors. See\n // http://ecma-international.org/ecma-262/7.0/#sec-ecmascript-function-objects-call-thisargument-argumentslist\n // for more details.\n var args = arguments;\n switch (args.length) {\n case 0: return new Ctor;\n case 1: return new Ctor(args[0]);\n case 2: return new Ctor(args[0], args[1]);\n case 3: return new Ctor(args[0], args[1], args[2]);\n case 4: return new Ctor(args[0], args[1], args[2], args[3]);\n case 5: return new Ctor(args[0], args[1], args[2], args[3], args[4]);\n case 6: return new Ctor(args[0], args[1], args[2], args[3], args[4], args[5]);\n case 7: return new Ctor(args[0], args[1], args[2], args[3], args[4], args[5], args[6]);\n }\n var thisBinding = baseCreate(Ctor.prototype),\n result = Ctor.apply(thisBinding, args);\n\n // Mimic the constructor's `return` behavior.\n // See https://es5.github.io/#x13.2.2 for more details.\n return isObject(result) ? result : thisBinding;\n };\n }\n\n /**\n * Creates a function that wraps `func` to enable currying.\n *\n * @private\n * @param {Function} func The function to wrap.\n * @param {number} bitmask The bitmask flags. See `createWrap` for more details.\n * @param {number} arity The arity of `func`.\n * @returns {Function} Returns the new wrapped function.\n */\n function createCurry(func, bitmask, arity) {\n var Ctor = createCtor(func);\n\n function wrapper() {\n var length = arguments.length,\n args = Array(length),\n index = length,\n placeholder = getHolder(wrapper);\n\n while (index--) {\n args[index] = arguments[index];\n }\n var holders = (length < 3 && args[0] !== placeholder && args[length - 1] !== placeholder)\n ? []\n : replaceHolders(args, placeholder);\n\n length -= holders.length;\n if (length < arity) {\n return createRecurry(\n func, bitmask, createHybrid, wrapper.placeholder, undefined,\n args, holders, undefined, undefined, arity - length);\n }\n var fn = (this && this !== root && this instanceof wrapper) ? Ctor : func;\n return apply(fn, this, args);\n }\n return wrapper;\n }\n\n /**\n * Creates a `_.find` or `_.findLast` function.\n *\n * @private\n * @param {Function} findIndexFunc The function to find the collection index.\n * @returns {Function} Returns the new find function.\n */\n function createFind(findIndexFunc) {\n return function(collection, predicate, fromIndex) {\n var iterable = Object(collection);\n if (!isArrayLike(collection)) {\n var iteratee = getIteratee(predicate, 3);\n collection = keys(collection);\n predicate = function(key) { return iteratee(iterable[key], key, iterable); };\n }\n var index = findIndexFunc(collection, predicate, fromIndex);\n return index > -1 ? iterable[iteratee ? collection[index] : index] : undefined;\n };\n }\n\n /**\n * Creates a `_.flow` or `_.flowRight` function.\n *\n * @private\n * @param {boolean} [fromRight] Specify iterating from right to left.\n * @returns {Function} Returns the new flow function.\n */\n function createFlow(fromRight) {\n return flatRest(function(funcs) {\n var length = funcs.length,\n index = length,\n prereq = LodashWrapper.prototype.thru;\n\n if (fromRight) {\n funcs.reverse();\n }\n while (index--) {\n var func = funcs[index];\n if (typeof func != 'function') {\n throw new TypeError(FUNC_ERROR_TEXT);\n }\n if (prereq && !wrapper && getFuncName(func) == 'wrapper') {\n var wrapper = new LodashWrapper([], true);\n }\n }\n index = wrapper ? index : length;\n while (++index < length) {\n func = funcs[index];\n\n var funcName = getFuncName(func),\n data = funcName == 'wrapper' ? getData(func) : undefined;\n\n if (data && isLaziable(data[0]) &&\n data[1] == (WRAP_ARY_FLAG | WRAP_CURRY_FLAG | WRAP_PARTIAL_FLAG | WRAP_REARG_FLAG) &&\n !data[4].length && data[9] == 1\n ) {\n wrapper = wrapper[getFuncName(data[0])].apply(wrapper, data[3]);\n } else {\n wrapper = (func.length == 1 && isLaziable(func))\n ? wrapper[funcName]()\n : wrapper.thru(func);\n }\n }\n return function() {\n var args = arguments,\n value = args[0];\n\n if (wrapper && args.length == 1 && isArray(value)) {\n return wrapper.plant(value).value();\n }\n var index = 0,\n result = length ? funcs[index].apply(this, args) : value;\n\n while (++index < length) {\n result = funcs[index].call(this, result);\n }\n return result;\n };\n });\n }\n\n /**\n * Creates a function that wraps `func` to invoke it with optional `this`\n * binding of `thisArg`, partial application, and currying.\n *\n * @private\n * @param {Function|string} func The function or method name to wrap.\n * @param {number} bitmask The bitmask flags. See `createWrap` for more details.\n * @param {*} [thisArg] The `this` binding of `func`.\n * @param {Array} [partials] The arguments to prepend to those provided to\n * the new function.\n * @param {Array} [holders] The `partials` placeholder indexes.\n * @param {Array} [partialsRight] The arguments to append to those provided\n * to the new function.\n * @param {Array} [holdersRight] The `partialsRight` placeholder indexes.\n * @param {Array} [argPos] The argument positions of the new function.\n * @param {number} [ary] The arity cap of `func`.\n * @param {number} [arity] The arity of `func`.\n * @returns {Function} Returns the new wrapped function.\n */\n function createHybrid(func, bitmask, thisArg, partials, holders, partialsRight, holdersRight, argPos, ary, arity) {\n var isAry = bitmask & WRAP_ARY_FLAG,\n isBind = bitmask & WRAP_BIND_FLAG,\n isBindKey = bitmask & WRAP_BIND_KEY_FLAG,\n isCurried = bitmask & (WRAP_CURRY_FLAG | WRAP_CURRY_RIGHT_FLAG),\n isFlip = bitmask & WRAP_FLIP_FLAG,\n Ctor = isBindKey ? undefined : createCtor(func);\n\n function wrapper() {\n var length = arguments.length,\n args = Array(length),\n index = length;\n\n while (index--) {\n args[index] = arguments[index];\n }\n if (isCurried) {\n var placeholder = getHolder(wrapper),\n holdersCount = countHolders(args, placeholder);\n }\n if (partials) {\n args = composeArgs(args, partials, holders, isCurried);\n }\n if (partialsRight) {\n args = composeArgsRight(args, partialsRight, holdersRight, isCurried);\n }\n length -= holdersCount;\n if (isCurried && length < arity) {\n var newHolders = replaceHolders(args, placeholder);\n return createRecurry(\n func, bitmask, createHybrid, wrapper.placeholder, thisArg,\n args, newHolders, argPos, ary, arity - length\n );\n }\n var thisBinding = isBind ? thisArg : this,\n fn = isBindKey ? thisBinding[func] : func;\n\n length = args.length;\n if (argPos) {\n args = reorder(args, argPos);\n } else if (isFlip && length > 1) {\n args.reverse();\n }\n if (isAry && ary < length) {\n args.length = ary;\n }\n if (this && this !== root && this instanceof wrapper) {\n fn = Ctor || createCtor(fn);\n }\n return fn.apply(thisBinding, args);\n }\n return wrapper;\n }\n\n /**\n * Creates a function like `_.invertBy`.\n *\n * @private\n * @param {Function} setter The function to set accumulator values.\n * @param {Function} toIteratee The function to resolve iteratees.\n * @returns {Function} Returns the new inverter function.\n */\n function createInverter(setter, toIteratee) {\n return function(object, iteratee) {\n return baseInverter(object, setter, toIteratee(iteratee), {});\n };\n }\n\n /**\n * Creates a function that performs a mathematical operation on two values.\n *\n * @private\n * @param {Function} operator The function to perform the operation.\n * @param {number} [defaultValue] The value used for `undefined` arguments.\n * @returns {Function} Returns the new mathematical operation function.\n */\n function createMathOperation(operator, defaultValue) {\n return function(value, other) {\n var result;\n if (value === undefined && other === undefined) {\n return defaultValue;\n }\n if (value !== undefined) {\n result = value;\n }\n if (other !== undefined) {\n if (result === undefined) {\n return other;\n }\n if (typeof value == 'string' || typeof other == 'string') {\n value = baseToString(value);\n other = baseToString(other);\n } else {\n value = baseToNumber(value);\n other = baseToNumber(other);\n }\n result = operator(value, other);\n }\n return result;\n };\n }\n\n /**\n * Creates a function like `_.over`.\n *\n * @private\n * @param {Function} arrayFunc The function to iterate over iteratees.\n * @returns {Function} Returns the new over function.\n */\n function createOver(arrayFunc) {\n return flatRest(function(iteratees) {\n iteratees = arrayMap(iteratees, baseUnary(getIteratee()));\n return baseRest(function(args) {\n var thisArg = this;\n return arrayFunc(iteratees, function(iteratee) {\n return apply(iteratee, thisArg, args);\n });\n });\n });\n }\n\n /**\n * Creates the padding for `string` based on `length`. The `chars` string\n * is truncated if the number of characters exceeds `length`.\n *\n * @private\n * @param {number} length The padding length.\n * @param {string} [chars=' '] The string used as padding.\n * @returns {string} Returns the padding for `string`.\n */\n function createPadding(length, chars) {\n chars = chars === undefined ? ' ' : baseToString(chars);\n\n var charsLength = chars.length;\n if (charsLength < 2) {\n return charsLength ? baseRepeat(chars, length) : chars;\n }\n var result = baseRepeat(chars, nativeCeil(length / stringSize(chars)));\n return hasUnicode(chars)\n ? castSlice(stringToArray(result), 0, length).join('')\n : result.slice(0, length);\n }\n\n /**\n * Creates a function that wraps `func` to invoke it with the `this` binding\n * of `thisArg` and `partials` prepended to the arguments it receives.\n *\n * @private\n * @param {Function} func The function to wrap.\n * @param {number} bitmask The bitmask flags. See `createWrap` for more details.\n * @param {*} thisArg The `this` binding of `func`.\n * @param {Array} partials The arguments to prepend to those provided to\n * the new function.\n * @returns {Function} Returns the new wrapped function.\n */\n function createPartial(func, bitmask, thisArg, partials) {\n var isBind = bitmask & WRAP_BIND_FLAG,\n Ctor = createCtor(func);\n\n function wrapper() {\n var argsIndex = -1,\n argsLength = arguments.length,\n leftIndex = -1,\n leftLength = partials.length,\n args = Array(leftLength + argsLength),\n fn = (this && this !== root && this instanceof wrapper) ? Ctor : func;\n\n while (++leftIndex < leftLength) {\n args[leftIndex] = partials[leftIndex];\n }\n while (argsLength--) {\n args[leftIndex++] = arguments[++argsIndex];\n }\n return apply(fn, isBind ? thisArg : this, args);\n }\n return wrapper;\n }\n\n /**\n * Creates a `_.range` or `_.rangeRight` function.\n *\n * @private\n * @param {boolean} [fromRight] Specify iterating from right to left.\n * @returns {Function} Returns the new range function.\n */\n function createRange(fromRight) {\n return function(start, end, step) {\n if (step && typeof step != 'number' && isIterateeCall(start, end, step)) {\n end = step = undefined;\n }\n // Ensure the sign of `-0` is preserved.\n start = toFinite(start);\n if (end === undefined) {\n end = start;\n start = 0;\n } else {\n end = toFinite(end);\n }\n step = step === undefined ? (start < end ? 1 : -1) : toFinite(step);\n return baseRange(start, end, step, fromRight);\n };\n }\n\n /**\n * Creates a function that performs a relational operation on two values.\n *\n * @private\n * @param {Function} operator The function to perform the operation.\n * @returns {Function} Returns the new relational operation function.\n */\n function createRelationalOperation(operator) {\n return function(value, other) {\n if (!(typeof value == 'string' && typeof other == 'string')) {\n value = toNumber(value);\n other = toNumber(other);\n }\n return operator(value, other);\n };\n }\n\n /**\n * Creates a function that wraps `func` to continue currying.\n *\n * @private\n * @param {Function} func The function to wrap.\n * @param {number} bitmask The bitmask flags. See `createWrap` for more details.\n * @param {Function} wrapFunc The function to create the `func` wrapper.\n * @param {*} placeholder The placeholder value.\n * @param {*} [thisArg] The `this` binding of `func`.\n * @param {Array} [partials] The arguments to prepend to those provided to\n * the new function.\n * @param {Array} [holders] The `partials` placeholder indexes.\n * @param {Array} [argPos] The argument positions of the new function.\n * @param {number} [ary] The arity cap of `func`.\n * @param {number} [arity] The arity of `func`.\n * @returns {Function} Returns the new wrapped function.\n */\n function createRecurry(func, bitmask, wrapFunc, placeholder, thisArg, partials, holders, argPos, ary, arity) {\n var isCurry = bitmask & WRAP_CURRY_FLAG,\n newHolders = isCurry ? holders : undefined,\n newHoldersRight = isCurry ? undefined : holders,\n newPartials = isCurry ? partials : undefined,\n newPartialsRight = isCurry ? undefined : partials;\n\n bitmask |= (isCurry ? WRAP_PARTIAL_FLAG : WRAP_PARTIAL_RIGHT_FLAG);\n bitmask &= ~(isCurry ? WRAP_PARTIAL_RIGHT_FLAG : WRAP_PARTIAL_FLAG);\n\n if (!(bitmask & WRAP_CURRY_BOUND_FLAG)) {\n bitmask &= ~(WRAP_BIND_FLAG | WRAP_BIND_KEY_FLAG);\n }\n var newData = [\n func, bitmask, thisArg, newPartials, newHolders, newPartialsRight,\n newHoldersRight, argPos, ary, arity\n ];\n\n var result = wrapFunc.apply(undefined, newData);\n if (isLaziable(func)) {\n setData(result, newData);\n }\n result.placeholder = placeholder;\n return setWrapToString(result, func, bitmask);\n }\n\n /**\n * Creates a function like `_.round`.\n *\n * @private\n * @param {string} methodName The name of the `Math` method to use when rounding.\n * @returns {Function} Returns the new round function.\n */\n function createRound(methodName) {\n var func = Math[methodName];\n return function(number, precision) {\n number = toNumber(number);\n precision = precision == null ? 0 : nativeMin(toInteger(precision), 292);\n if (precision && nativeIsFinite(number)) {\n // Shift with exponential notation to avoid floating-point issues.\n // See [MDN](https://mdn.io/round#Examples) for more details.\n var pair = (toString(number) + 'e').split('e'),\n value = func(pair[0] + 'e' + (+pair[1] + precision));\n\n pair = (toString(value) + 'e').split('e');\n return +(pair[0] + 'e' + (+pair[1] - precision));\n }\n return func(number);\n };\n }\n\n /**\n * Creates a set object of `values`.\n *\n * @private\n * @param {Array} values The values to add to the set.\n * @returns {Object} Returns the new set.\n */\n var createSet = !(Set && (1 / setToArray(new Set([,-0]))[1]) == INFINITY) ? noop : function(values) {\n return new Set(values);\n };\n\n /**\n * Creates a `_.toPairs` or `_.toPairsIn` function.\n *\n * @private\n * @param {Function} keysFunc The function to get the keys of a given object.\n * @returns {Function} Returns the new pairs function.\n */\n function createToPairs(keysFunc) {\n return function(object) {\n var tag = getTag(object);\n if (tag == mapTag) {\n return mapToArray(object);\n }\n if (tag == setTag) {\n return setToPairs(object);\n }\n return baseToPairs(object, keysFunc(object));\n };\n }\n\n /**\n * Creates a function that either curries or invokes `func` with optional\n * `this` binding and partially applied arguments.\n *\n * @private\n * @param {Function|string} func The function or method name to wrap.\n * @param {number} bitmask The bitmask flags.\n * 1 - `_.bind`\n * 2 - `_.bindKey`\n * 4 - `_.curry` or `_.curryRight` of a bound function\n * 8 - `_.curry`\n * 16 - `_.curryRight`\n * 32 - `_.partial`\n * 64 - `_.partialRight`\n * 128 - `_.rearg`\n * 256 - `_.ary`\n * 512 - `_.flip`\n * @param {*} [thisArg] The `this` binding of `func`.\n * @param {Array} [partials] The arguments to be partially applied.\n * @param {Array} [holders] The `partials` placeholder indexes.\n * @param {Array} [argPos] The argument positions of the new function.\n * @param {number} [ary] The arity cap of `func`.\n * @param {number} [arity] The arity of `func`.\n * @returns {Function} Returns the new wrapped function.\n */\n function createWrap(func, bitmask, thisArg, partials, holders, argPos, ary, arity) {\n var isBindKey = bitmask & WRAP_BIND_KEY_FLAG;\n if (!isBindKey && typeof func != 'function') {\n throw new TypeError(FUNC_ERROR_TEXT);\n }\n var length = partials ? partials.length : 0;\n if (!length) {\n bitmask &= ~(WRAP_PARTIAL_FLAG | WRAP_PARTIAL_RIGHT_FLAG);\n partials = holders = undefined;\n }\n ary = ary === undefined ? ary : nativeMax(toInteger(ary), 0);\n arity = arity === undefined ? arity : toInteger(arity);\n length -= holders ? holders.length : 0;\n\n if (bitmask & WRAP_PARTIAL_RIGHT_FLAG) {\n var partialsRight = partials,\n holdersRight = holders;\n\n partials = holders = undefined;\n }\n var data = isBindKey ? undefined : getData(func);\n\n var newData = [\n func, bitmask, thisArg, partials, holders, partialsRight, holdersRight,\n argPos, ary, arity\n ];\n\n if (data) {\n mergeData(newData, data);\n }\n func = newData[0];\n bitmask = newData[1];\n thisArg = newData[2];\n partials = newData[3];\n holders = newData[4];\n arity = newData[9] = newData[9] === undefined\n ? (isBindKey ? 0 : func.length)\n : nativeMax(newData[9] - length, 0);\n\n if (!arity && bitmask & (WRAP_CURRY_FLAG | WRAP_CURRY_RIGHT_FLAG)) {\n bitmask &= ~(WRAP_CURRY_FLAG | WRAP_CURRY_RIGHT_FLAG);\n }\n if (!bitmask || bitmask == WRAP_BIND_FLAG) {\n var result = createBind(func, bitmask, thisArg);\n } else if (bitmask == WRAP_CURRY_FLAG || bitmask == WRAP_CURRY_RIGHT_FLAG) {\n result = createCurry(func, bitmask, arity);\n } else if ((bitmask == WRAP_PARTIAL_FLAG || bitmask == (WRAP_BIND_FLAG | WRAP_PARTIAL_FLAG)) && !holders.length) {\n result = createPartial(func, bitmask, thisArg, partials);\n } else {\n result = createHybrid.apply(undefined, newData);\n }\n var setter = data ? baseSetData : setData;\n return setWrapToString(setter(result, newData), func, bitmask);\n }\n\n /**\n * Used by `_.defaults` to customize its `_.assignIn` use to assign properties\n * of source objects to the destination object for all destination properties\n * that resolve to `undefined`.\n *\n * @private\n * @param {*} objValue The destination value.\n * @param {*} srcValue The source value.\n * @param {string} key The key of the property to assign.\n * @param {Object} object The parent object of `objValue`.\n * @returns {*} Returns the value to assign.\n */\n function customDefaultsAssignIn(objValue, srcValue, key, object) {\n if (objValue === undefined ||\n (eq(objValue, objectProto[key]) && !hasOwnProperty.call(object, key))) {\n return srcValue;\n }\n return objValue;\n }\n\n /**\n * Used by `_.defaultsDeep` to customize its `_.merge` use to merge source\n * objects into destination objects that are passed thru.\n *\n * @private\n * @param {*} objValue The destination value.\n * @param {*} srcValue The source value.\n * @param {string} key The key of the property to merge.\n * @param {Object} object The parent object of `objValue`.\n * @param {Object} source The parent object of `srcValue`.\n * @param {Object} [stack] Tracks traversed source values and their merged\n * counterparts.\n * @returns {*} Returns the value to assign.\n */\n function customDefaultsMerge(objValue, srcValue, key, object, source, stack) {\n if (isObject(objValue) && isObject(srcValue)) {\n // Recursively merge objects and arrays (susceptible to call stack limits).\n stack.set(srcValue, objValue);\n baseMerge(objValue, srcValue, undefined, customDefaultsMerge, stack);\n stack['delete'](srcValue);\n }\n return objValue;\n }\n\n /**\n * Used by `_.omit` to customize its `_.cloneDeep` use to only clone plain\n * objects.\n *\n * @private\n * @param {*} value The value to inspect.\n * @param {string} key The key of the property to inspect.\n * @returns {*} Returns the uncloned value or `undefined` to defer cloning to `_.cloneDeep`.\n */\n function customOmitClone(value) {\n return isPlainObject(value) ? undefined : value;\n }\n\n /**\n * A specialized version of `baseIsEqualDeep` for arrays with support for\n * partial deep comparisons.\n *\n * @private\n * @param {Array} array The array to compare.\n * @param {Array} other The other array to compare.\n * @param {number} bitmask The bitmask flags. See `baseIsEqual` for more details.\n * @param {Function} customizer The function to customize comparisons.\n * @param {Function} equalFunc The function to determine equivalents of values.\n * @param {Object} stack Tracks traversed `array` and `other` objects.\n * @returns {boolean} Returns `true` if the arrays are equivalent, else `false`.\n */\n function equalArrays(array, other, bitmask, customizer, equalFunc, stack) {\n var isPartial = bitmask & COMPARE_PARTIAL_FLAG,\n arrLength = array.length,\n othLength = other.length;\n\n if (arrLength != othLength && !(isPartial && othLength > arrLength)) {\n return false;\n }\n // Check that cyclic values are equal.\n var arrStacked = stack.get(array);\n var othStacked = stack.get(other);\n if (arrStacked && othStacked) {\n return arrStacked == other && othStacked == array;\n }\n var index = -1,\n result = true,\n seen = (bitmask & COMPARE_UNORDERED_FLAG) ? new SetCache : undefined;\n\n stack.set(array, other);\n stack.set(other, array);\n\n // Ignore non-index properties.\n while (++index < arrLength) {\n var arrValue = array[index],\n othValue = other[index];\n\n if (customizer) {\n var compared = isPartial\n ? customizer(othValue, arrValue, index, other, array, stack)\n : customizer(arrValue, othValue, index, array, other, stack);\n }\n if (compared !== undefined) {\n if (compared) {\n continue;\n }\n result = false;\n break;\n }\n // Recursively compare arrays (susceptible to call stack limits).\n if (seen) {\n if (!arraySome(other, function(othValue, othIndex) {\n if (!cacheHas(seen, othIndex) &&\n (arrValue === othValue || equalFunc(arrValue, othValue, bitmask, customizer, stack))) {\n return seen.push(othIndex);\n }\n })) {\n result = false;\n break;\n }\n } else if (!(\n arrValue === othValue ||\n equalFunc(arrValue, othValue, bitmask, customizer, stack)\n )) {\n result = false;\n break;\n }\n }\n stack['delete'](array);\n stack['delete'](other);\n return result;\n }\n\n /**\n * A specialized version of `baseIsEqualDeep` for comparing objects of\n * the same `toStringTag`.\n *\n * **Note:** This function only supports comparing values with tags of\n * `Boolean`, `Date`, `Error`, `Number`, `RegExp`, or `String`.\n *\n * @private\n * @param {Object} object The object to compare.\n * @param {Object} other The other object to compare.\n * @param {string} tag The `toStringTag` of the objects to compare.\n * @param {number} bitmask The bitmask flags. See `baseIsEqual` for more details.\n * @param {Function} customizer The function to customize comparisons.\n * @param {Function} equalFunc The function to determine equivalents of values.\n * @param {Object} stack Tracks traversed `object` and `other` objects.\n * @returns {boolean} Returns `true` if the objects are equivalent, else `false`.\n */\n function equalByTag(object, other, tag, bitmask, customizer, equalFunc, stack) {\n switch (tag) {\n case dataViewTag:\n if ((object.byteLength != other.byteLength) ||\n (object.byteOffset != other.byteOffset)) {\n return false;\n }\n object = object.buffer;\n other = other.buffer;\n\n case arrayBufferTag:\n if ((object.byteLength != other.byteLength) ||\n !equalFunc(new Uint8Array(object), new Uint8Array(other))) {\n return false;\n }\n return true;\n\n case boolTag:\n case dateTag:\n case numberTag:\n // Coerce booleans to `1` or `0` and dates to milliseconds.\n // Invalid dates are coerced to `NaN`.\n return eq(+object, +other);\n\n case errorTag:\n return object.name == other.name && object.message == other.message;\n\n case regexpTag:\n case stringTag:\n // Coerce regexes to strings and treat strings, primitives and objects,\n // as equal. See http://www.ecma-international.org/ecma-262/7.0/#sec-regexp.prototype.tostring\n // for more details.\n return object == (other + '');\n\n case mapTag:\n var convert = mapToArray;\n\n case setTag:\n var isPartial = bitmask & COMPARE_PARTIAL_FLAG;\n convert || (convert = setToArray);\n\n if (object.size != other.size && !isPartial) {\n return false;\n }\n // Assume cyclic values are equal.\n var stacked = stack.get(object);\n if (stacked) {\n return stacked == other;\n }\n bitmask |= COMPARE_UNORDERED_FLAG;\n\n // Recursively compare objects (susceptible to call stack limits).\n stack.set(object, other);\n var result = equalArrays(convert(object), convert(other), bitmask, customizer, equalFunc, stack);\n stack['delete'](object);\n return result;\n\n case symbolTag:\n if (symbolValueOf) {\n return symbolValueOf.call(object) == symbolValueOf.call(other);\n }\n }\n return false;\n }\n\n /**\n * A specialized version of `baseIsEqualDeep` for objects with support for\n * partial deep comparisons.\n *\n * @private\n * @param {Object} object The object to compare.\n * @param {Object} other The other object to compare.\n * @param {number} bitmask The bitmask flags. See `baseIsEqual` for more details.\n * @param {Function} customizer The function to customize comparisons.\n * @param {Function} equalFunc The function to determine equivalents of values.\n * @param {Object} stack Tracks traversed `object` and `other` objects.\n * @returns {boolean} Returns `true` if the objects are equivalent, else `false`.\n */\n function equalObjects(object, other, bitmask, customizer, equalFunc, stack) {\n var isPartial = bitmask & COMPARE_PARTIAL_FLAG,\n objProps = getAllKeys(object),\n objLength = objProps.length,\n othProps = getAllKeys(other),\n othLength = othProps.length;\n\n if (objLength != othLength && !isPartial) {\n return false;\n }\n var index = objLength;\n while (index--) {\n var key = objProps[index];\n if (!(isPartial ? key in other : hasOwnProperty.call(other, key))) {\n return false;\n }\n }\n // Check that cyclic values are equal.\n var objStacked = stack.get(object);\n var othStacked = stack.get(other);\n if (objStacked && othStacked) {\n return objStacked == other && othStacked == object;\n }\n var result = true;\n stack.set(object, other);\n stack.set(other, object);\n\n var skipCtor = isPartial;\n while (++index < objLength) {\n key = objProps[index];\n var objValue = object[key],\n othValue = other[key];\n\n if (customizer) {\n var compared = isPartial\n ? customizer(othValue, objValue, key, other, object, stack)\n : customizer(objValue, othValue, key, object, other, stack);\n }\n // Recursively compare objects (susceptible to call stack limits).\n if (!(compared === undefined\n ? (objValue === othValue || equalFunc(objValue, othValue, bitmask, customizer, stack))\n : compared\n )) {\n result = false;\n break;\n }\n skipCtor || (skipCtor = key == 'constructor');\n }\n if (result && !skipCtor) {\n var objCtor = object.constructor,\n othCtor = other.constructor;\n\n // Non `Object` object instances with different constructors are not equal.\n if (objCtor != othCtor &&\n ('constructor' in object && 'constructor' in other) &&\n !(typeof objCtor == 'function' && objCtor instanceof objCtor &&\n typeof othCtor == 'function' && othCtor instanceof othCtor)) {\n result = false;\n }\n }\n stack['delete'](object);\n stack['delete'](other);\n return result;\n }\n\n /**\n * A specialized version of `baseRest` which flattens the rest array.\n *\n * @private\n * @param {Function} func The function to apply a rest parameter to.\n * @returns {Function} Returns the new function.\n */\n function flatRest(func) {\n return setToString(overRest(func, undefined, flatten), func + '');\n }\n\n /**\n * Creates an array of own enumerable property names and symbols of `object`.\n *\n * @private\n * @param {Object} object The object to query.\n * @returns {Array} Returns the array of property names and symbols.\n */\n function getAllKeys(object) {\n return baseGetAllKeys(object, keys, getSymbols);\n }\n\n /**\n * Creates an array of own and inherited enumerable property names and\n * symbols of `object`.\n *\n * @private\n * @param {Object} object The object to query.\n * @returns {Array} Returns the array of property names and symbols.\n */\n function getAllKeysIn(object) {\n return baseGetAllKeys(object, keysIn, getSymbolsIn);\n }\n\n /**\n * Gets metadata for `func`.\n *\n * @private\n * @param {Function} func The function to query.\n * @returns {*} Returns the metadata for `func`.\n */\n var getData = !metaMap ? noop : function(func) {\n return metaMap.get(func);\n };\n\n /**\n * Gets the name of `func`.\n *\n * @private\n * @param {Function} func The function to query.\n * @returns {string} Returns the function name.\n */\n function getFuncName(func) {\n var result = (func.name + ''),\n array = realNames[result],\n length = hasOwnProperty.call(realNames, result) ? array.length : 0;\n\n while (length--) {\n var data = array[length],\n otherFunc = data.func;\n if (otherFunc == null || otherFunc == func) {\n return data.name;\n }\n }\n return result;\n }\n\n /**\n * Gets the argument placeholder value for `func`.\n *\n * @private\n * @param {Function} func The function to inspect.\n * @returns {*} Returns the placeholder value.\n */\n function getHolder(func) {\n var object = hasOwnProperty.call(lodash, 'placeholder') ? lodash : func;\n return object.placeholder;\n }\n\n /**\n * Gets the appropriate \"iteratee\" function. If `_.iteratee` is customized,\n * this function returns the custom method, otherwise it returns `baseIteratee`.\n * If arguments are provided, the chosen function is invoked with them and\n * its result is returned.\n *\n * @private\n * @param {*} [value] The value to convert to an iteratee.\n * @param {number} [arity] The arity of the created iteratee.\n * @returns {Function} Returns the chosen function or its result.\n */\n function getIteratee() {\n var result = lodash.iteratee || iteratee;\n result = result === iteratee ? baseIteratee : result;\n return arguments.length ? result(arguments[0], arguments[1]) : result;\n }\n\n /**\n * Gets the data for `map`.\n *\n * @private\n * @param {Object} map The map to query.\n * @param {string} key The reference key.\n * @returns {*} Returns the map data.\n */\n function getMapData(map, key) {\n var data = map.__data__;\n return isKeyable(key)\n ? data[typeof key == 'string' ? 'string' : 'hash']\n : data.map;\n }\n\n /**\n * Gets the property names, values, and compare flags of `object`.\n *\n * @private\n * @param {Object} object The object to query.\n * @returns {Array} Returns the match data of `object`.\n */\n function getMatchData(object) {\n var result = keys(object),\n length = result.length;\n\n while (length--) {\n var key = result[length],\n value = object[key];\n\n result[length] = [key, value, isStrictComparable(value)];\n }\n return result;\n }\n\n /**\n * Gets the native function at `key` of `object`.\n *\n * @private\n * @param {Object} object The object to query.\n * @param {string} key The key of the method to get.\n * @returns {*} Returns the function if it's native, else `undefined`.\n */\n function getNative(object, key) {\n var value = getValue(object, key);\n return baseIsNative(value) ? value : undefined;\n }\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 */\n function 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\n /**\n * Creates an array of the own enumerable symbols of `object`.\n *\n * @private\n * @param {Object} object The object to query.\n * @returns {Array} Returns the array of symbols.\n */\n var getSymbols = !nativeGetSymbols ? stubArray : function(object) {\n if (object == null) {\n return [];\n }\n object = Object(object);\n return arrayFilter(nativeGetSymbols(object), function(symbol) {\n return propertyIsEnumerable.call(object, symbol);\n });\n };\n\n /**\n * Creates an array of the own and inherited enumerable symbols of `object`.\n *\n * @private\n * @param {Object} object The object to query.\n * @returns {Array} Returns the array of symbols.\n */\n var getSymbolsIn = !nativeGetSymbols ? stubArray : function(object) {\n var result = [];\n while (object) {\n arrayPush(result, getSymbols(object));\n object = getPrototype(object);\n }\n return result;\n };\n\n /**\n * Gets the `toStringTag` of `value`.\n *\n * @private\n * @param {*} value The value to query.\n * @returns {string} Returns the `toStringTag`.\n */\n var getTag = baseGetTag;\n\n // Fallback for data views, maps, sets, and weak maps in IE 11 and promises in Node.js < 6.\n if ((DataView && getTag(new DataView(new ArrayBuffer(1))) != dataViewTag) ||\n (Map && getTag(new Map) != mapTag) ||\n (Promise && getTag(Promise.resolve()) != promiseTag) ||\n (Set && getTag(new Set) != setTag) ||\n (WeakMap && getTag(new WeakMap) != weakMapTag)) {\n getTag = function(value) {\n var result = baseGetTag(value),\n Ctor = result == objectTag ? value.constructor : undefined,\n ctorString = Ctor ? toSource(Ctor) : '';\n\n if (ctorString) {\n switch (ctorString) {\n case dataViewCtorString: return dataViewTag;\n case mapCtorString: return mapTag;\n case promiseCtorString: return promiseTag;\n case setCtorString: return setTag;\n case weakMapCtorString: return weakMapTag;\n }\n }\n return result;\n };\n }\n\n /**\n * Gets the view, applying any `transforms` to the `start` and `end` positions.\n *\n * @private\n * @param {number} start The start of the view.\n * @param {number} end The end of the view.\n * @param {Array} transforms The transformations to apply to the view.\n * @returns {Object} Returns an object containing the `start` and `end`\n * positions of the view.\n */\n function getView(start, end, transforms) {\n var index = -1,\n length = transforms.length;\n\n while (++index < length) {\n var data = transforms[index],\n size = data.size;\n\n switch (data.type) {\n case 'drop': start += size; break;\n case 'dropRight': end -= size; break;\n case 'take': end = nativeMin(end, start + size); break;\n case 'takeRight': start = nativeMax(start, end - size); break;\n }\n }\n return { 'start': start, 'end': end };\n }\n\n /**\n * Extracts wrapper details from the `source` body comment.\n *\n * @private\n * @param {string} source The source to inspect.\n * @returns {Array} Returns the wrapper details.\n */\n function getWrapDetails(source) {\n var match = source.match(reWrapDetails);\n return match ? match[1].split(reSplitDetails) : [];\n }\n\n /**\n * Checks if `path` exists on `object`.\n *\n * @private\n * @param {Object} object The object to query.\n * @param {Array|string} path The path to check.\n * @param {Function} hasFunc The function to check properties.\n * @returns {boolean} Returns `true` if `path` exists, else `false`.\n */\n function hasPath(object, path, hasFunc) {\n path = castPath(path, object);\n\n var index = -1,\n length = path.length,\n result = false;\n\n while (++index < length) {\n var key = toKey(path[index]);\n if (!(result = object != null && hasFunc(object, key))) {\n break;\n }\n object = object[key];\n }\n if (result || ++index != length) {\n return result;\n }\n length = object == null ? 0 : object.length;\n return !!length && isLength(length) && isIndex(key, length) &&\n (isArray(object) || isArguments(object));\n }\n\n /**\n * Initializes an array clone.\n *\n * @private\n * @param {Array} array The array to clone.\n * @returns {Array} Returns the initialized clone.\n */\n function initCloneArray(array) {\n var length = array.length,\n result = new array.constructor(length);\n\n // Add properties assigned by `RegExp#exec`.\n if (length && typeof array[0] == 'string' && hasOwnProperty.call(array, 'index')) {\n result.index = array.index;\n result.input = array.input;\n }\n return result;\n }\n\n /**\n * Initializes an object clone.\n *\n * @private\n * @param {Object} object The object to clone.\n * @returns {Object} Returns the initialized clone.\n */\n function initCloneObject(object) {\n return (typeof object.constructor == 'function' && !isPrototype(object))\n ? baseCreate(getPrototype(object))\n : {};\n }\n\n /**\n * Initializes an object clone based on its `toStringTag`.\n *\n * **Note:** This function only supports cloning values with tags of\n * `Boolean`, `Date`, `Error`, `Map`, `Number`, `RegExp`, `Set`, or `String`.\n *\n * @private\n * @param {Object} object The object to clone.\n * @param {string} tag The `toStringTag` of the object to clone.\n * @param {boolean} [isDeep] Specify a deep clone.\n * @returns {Object} Returns the initialized clone.\n */\n function initCloneByTag(object, tag, isDeep) {\n var Ctor = object.constructor;\n switch (tag) {\n case arrayBufferTag:\n return cloneArrayBuffer(object);\n\n case boolTag:\n case dateTag:\n return new Ctor(+object);\n\n case dataViewTag:\n return cloneDataView(object, isDeep);\n\n case float32Tag: case float64Tag:\n case int8Tag: case int16Tag: case int32Tag:\n case uint8Tag: case uint8ClampedTag: case uint16Tag: case uint32Tag:\n return cloneTypedArray(object, isDeep);\n\n case mapTag:\n return new Ctor;\n\n case numberTag:\n case stringTag:\n return new Ctor(object);\n\n case regexpTag:\n return cloneRegExp(object);\n\n case setTag:\n return new Ctor;\n\n case symbolTag:\n return cloneSymbol(object);\n }\n }\n\n /**\n * Inserts wrapper `details` in a comment at the top of the `source` body.\n *\n * @private\n * @param {string} source The source to modify.\n * @returns {Array} details The details to insert.\n * @returns {string} Returns the modified source.\n */\n function insertWrapDetails(source, details) {\n var length = details.length;\n if (!length) {\n return source;\n }\n var lastIndex = length - 1;\n details[lastIndex] = (length > 1 ? '& ' : '') + details[lastIndex];\n details = details.join(length > 2 ? ', ' : ' ');\n return source.replace(reWrapComment, '{\\n/* [wrapped with ' + details + '] */\\n');\n }\n\n /**\n * Checks if `value` is a flattenable `arguments` object or array.\n *\n * @private\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is flattenable, else `false`.\n */\n function isFlattenable(value) {\n return isArray(value) || isArguments(value) ||\n !!(spreadableSymbol && value && value[spreadableSymbol]);\n }\n\n /**\n * Checks if `value` is a valid array-like index.\n *\n * @private\n * @param {*} value The value to check.\n * @param {number} [length=MAX_SAFE_INTEGER] The upper bounds of a valid index.\n * @returns {boolean} Returns `true` if `value` is a valid index, else `false`.\n */\n function isIndex(value, length) {\n var type = typeof value;\n length = length == null ? MAX_SAFE_INTEGER : length;\n\n return !!length &&\n (type == 'number' ||\n (type != 'symbol' && reIsUint.test(value))) &&\n (value > -1 && value % 1 == 0 && value < length);\n }\n\n /**\n * Checks if the given arguments are from an iteratee call.\n *\n * @private\n * @param {*} value The potential iteratee value argument.\n * @param {*} index The potential iteratee index or key argument.\n * @param {*} object The potential iteratee object argument.\n * @returns {boolean} Returns `true` if the arguments are from an iteratee call,\n * else `false`.\n */\n function isIterateeCall(value, index, object) {\n if (!isObject(object)) {\n return false;\n }\n var type = typeof index;\n if (type == 'number'\n ? (isArrayLike(object) && isIndex(index, object.length))\n : (type == 'string' && index in object)\n ) {\n return eq(object[index], value);\n }\n return false;\n }\n\n /**\n * Checks if `value` is a property name and not a property path.\n *\n * @private\n * @param {*} value The value to check.\n * @param {Object} [object] The object to query keys on.\n * @returns {boolean} Returns `true` if `value` is a property name, else `false`.\n */\n function isKey(value, object) {\n if (isArray(value)) {\n return false;\n }\n var type = typeof value;\n if (type == 'number' || type == 'symbol' || type == 'boolean' ||\n value == null || isSymbol(value)) {\n return true;\n }\n return reIsPlainProp.test(value) || !reIsDeepProp.test(value) ||\n (object != null && value in Object(object));\n }\n\n /**\n * Checks if `value` is suitable for use as unique object key.\n *\n * @private\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is suitable, else `false`.\n */\n function isKeyable(value) {\n var type = typeof value;\n return (type == 'string' || type == 'number' || type == 'symbol' || type == 'boolean')\n ? (value !== '__proto__')\n : (value === null);\n }\n\n /**\n * Checks if `func` has a lazy counterpart.\n *\n * @private\n * @param {Function} func The function to check.\n * @returns {boolean} Returns `true` if `func` has a lazy counterpart,\n * else `false`.\n */\n function isLaziable(func) {\n var funcName = getFuncName(func),\n other = lodash[funcName];\n\n if (typeof other != 'function' || !(funcName in LazyWrapper.prototype)) {\n return false;\n }\n if (func === other) {\n return true;\n }\n var data = getData(other);\n return !!data && func === data[0];\n }\n\n /**\n * Checks if `func` has its source masked.\n *\n * @private\n * @param {Function} func The function to check.\n * @returns {boolean} Returns `true` if `func` is masked, else `false`.\n */\n function isMasked(func) {\n return !!maskSrcKey && (maskSrcKey in func);\n }\n\n /**\n * Checks if `func` is capable of being masked.\n *\n * @private\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `func` is maskable, else `false`.\n */\n var isMaskable = coreJsData ? isFunction : stubFalse;\n\n /**\n * Checks if `value` is likely a prototype object.\n *\n * @private\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` is a prototype, else `false`.\n */\n function isPrototype(value) {\n var Ctor = value && value.constructor,\n proto = (typeof Ctor == 'function' && Ctor.prototype) || objectProto;\n\n return value === proto;\n }\n\n /**\n * Checks if `value` is suitable for strict equality comparisons, i.e. `===`.\n *\n * @private\n * @param {*} value The value to check.\n * @returns {boolean} Returns `true` if `value` if suitable for strict\n * equality comparisons, else `false`.\n */\n function isStrictComparable(value) {\n return value === value && !isObject(value);\n }\n\n /**\n * A specialized version of `matchesProperty` for source values suitable\n * for strict equality comparisons, i.e. `===`.\n *\n * @private\n * @param {string} key The key of the property to get.\n * @param {*} srcValue The value to match.\n * @returns {Function} Returns the new spec function.\n */\n function matchesStrictComparable(key, srcValue) {\n return function(object) {\n if (object == null) {\n return false;\n }\n return object[key] === srcValue &&\n (srcValue !== undefined || (key in Object(object)));\n };\n }\n\n /**\n * A specialized version of `_.memoize` which clears the memoized function's\n * cache when it exceeds `MAX_MEMOIZE_SIZE`.\n *\n * @private\n * @param {Function} func The function to have its output memoized.\n * @returns {Function} Returns the new memoized function.\n */\n function memoizeCapped(func) {\n var result = memoize(func, function(key) {\n if (cache.size === MAX_MEMOIZE_SIZE) {\n cache.clear();\n }\n return key;\n });\n\n var cache = result.cache;\n return result;\n }\n\n /**\n * Merges the function metadata of `source` into `data`.\n *\n * Merging metadata reduces the number of wrappers used to invoke a function.\n * This is possible because methods like `_.bind`, `_.curry`, and `_.partial`\n * may be applied regardless of execution order. Methods like `_.ary` and\n * `_.rearg` modify function arguments, making the order in which they are\n * executed important, preventing the merging of metadata. However, we make\n * an exception for a safe combined case where curried functions have `_.ary`\n * and or `_.rearg` applied.\n *\n * @private\n * @param {Array} data The destination metadata.\n * @param {Array} source The source metadata.\n * @returns {Array} Returns `data`.\n */\n function mergeData(data, source) {\n var bitmask = data[1],\n srcBitmask = source[1],\n newBitmask = bitmask | srcBitmask,\n isCommon = newBitmask < (WRAP_BIND_FLAG | WRAP_BIND_KEY_FLAG | WRAP_ARY_FLAG);\n\n var isCombo =\n ((srcBitmask == WRAP_ARY_FLAG) && (bitmask == WRAP_CURRY_FLAG)) ||\n ((srcBitmask == WRAP_ARY_FLAG) && (bitmask == WRAP_REARG_FLAG) && (data[7].length <= source[8])) ||\n ((srcBitmask == (WRAP_ARY_FLAG | WRAP_REARG_FLAG)) && (source[7].length <= source[8]) && (bitmask == WRAP_CURRY_FLAG));\n\n // Exit early if metadata can't be merged.\n if (!(isCommon || isCombo)) {\n return data;\n }\n // Use source `thisArg` if available.\n if (srcBitmask & WRAP_BIND_FLAG) {\n data[2] = source[2];\n // Set when currying a bound function.\n newBitmask |= bitmask & WRAP_BIND_FLAG ? 0 : WRAP_CURRY_BOUND_FLAG;\n }\n // Compose partial arguments.\n var value = source[3];\n if (value) {\n var partials = data[3];\n data[3] = partials ? composeArgs(partials, value, source[4]) : value;\n data[4] = partials ? replaceHolders(data[3], PLACEHOLDER) : source[4];\n }\n // Compose partial right arguments.\n value = source[5];\n if (value) {\n partials = data[5];\n data[5] = partials ? composeArgsRight(partials, value, source[6]) : value;\n data[6] = partials ? replaceHolders(data[5], PLACEHOLDER) : source[6];\n }\n // Use source `argPos` if available.\n value = source[7];\n if (value) {\n data[7] = value;\n }\n // Use source `ary` if it's smaller.\n if (srcBitmask & WRAP_ARY_FLAG) {\n data[8] = data[8] == null ? source[8] : nativeMin(data[8], source[8]);\n }\n // Use source `arity` if one is not provided.\n if (data[9] == null) {\n data[9] = source[9];\n }\n // Use source `func` and merge bitmasks.\n data[0] = source[0];\n data[1] = newBitmask;\n\n return data;\n }\n\n /**\n * This function is like\n * [`Object.keys`](http://ecma-international.org/ecma-262/7.0/#sec-object.keys)\n * except that it includes inherited enumerable properties.\n *\n * @private\n * @param {Object} object The object to query.\n * @returns {Array} Returns the array of property names.\n */\n function nativeKeysIn(object) {\n var result = [];\n if (object != null) {\n for (var key in Object(object)) {\n result.push(key);\n }\n }\n return result;\n }\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 */\n function objectToString(value) {\n return nativeObjectToString.call(value);\n }\n\n /**\n * A specialized version of `baseRest` which transforms the rest array.\n *\n * @private\n * @param {Function} func The function to apply a rest parameter to.\n * @param {number} [start=func.length-1] The start position of the rest parameter.\n * @param {Function} transform The rest array transform.\n * @returns {Function} Returns the new function.\n */\n function overRest(func, start, transform) {\n start = nativeMax(start === undefined ? (func.length - 1) : start, 0);\n return function() {\n var args = arguments,\n index = -1,\n length = nativeMax(args.length - start, 0),\n array = Array(length);\n\n while (++index < length) {\n array[index] = args[start + index];\n }\n index = -1;\n var otherArgs = Array(start + 1);\n while (++index < start) {\n otherArgs[index] = args[index];\n }\n otherArgs[start] = transform(array);\n return apply(func, this, otherArgs);\n };\n }\n\n /**\n * Gets the parent value at `path` of `object`.\n *\n * @private\n * @param {Object} object The object to query.\n * @param {Array} path The path to get the parent value of.\n * @returns {*} Returns the parent value.\n */\n function parent(object, path) {\n return path.length < 2 ? object : baseGet(object, baseSlice(path, 0, -1));\n }\n\n /**\n * Reorder `array` according to the specified indexes where the element at\n * the first index is assigned as the first element, the element at\n * the second index is assigned as the second element, and so on.\n *\n * @private\n * @param {Array} array The array to reorder.\n * @param {Array} indexes The arranged array indexes.\n * @returns {Array} Returns `array`.\n */\n function reorder(array, indexes) {\n var arrLength = array.length,\n length = nativeMin(indexes.length, arrLength),\n oldArray = copyArray(array);\n\n while (length--) {\n var index = indexes[length];\n array[length] = isIndex(index, arrLength) ? oldArray[index] : undefined;\n }\n return array;\n }\n\n /**\n * Gets the value at `key`, unless `key` is \"__proto__\" or \"constructor\".\n *\n * @private\n * @param {Object} object The object to query.\n * @param {string} key The key of the property to get.\n * @returns {*} Returns the property value.\n */\n function safeGet(object, key) {\n if (key === 'constructor' && typeof object[key] === 'function') {\n return;\n }\n\n if (key == '__proto__') {\n return;\n }\n\n return object[key];\n }\n\n /**\n * Sets metadata for `func`.\n *\n * **Note:** If this function becomes hot, i.e. is invoked a lot in a short\n * period of time, it will trip its breaker and transition to an identity\n * function to avoid garbage collection pauses in V8. See\n * [V8 issue 2070](https://bugs.chromium.org/p/v8/issues/detail?id=2070)\n * for more details.\n *\n * @private\n * @param {Function} func The function to associate metadata with.\n * @param {*} data The metadata.\n * @returns {Function} Returns `func`.\n */\n var setData = shortOut(baseSetData);\n\n /**\n * A simple wrapper around the global [`setTimeout`](https://mdn.io/setTimeout).\n *\n * @private\n * @param {Function} func The function to delay.\n * @param {number} wait The number of milliseconds to delay invocation.\n * @returns {number|Object} Returns the timer id or timeout object.\n */\n var setTimeout = ctxSetTimeout || function(func, wait) {\n return root.setTimeout(func, wait);\n };\n\n /**\n * Sets the `toString` method of `func` to return `string`.\n *\n * @private\n * @param {Function} func The function to modify.\n * @param {Function} string The `toString` result.\n * @returns {Function} Returns `func`.\n */\n var setToString = shortOut(baseSetToString);\n\n /**\n * Sets the `toString` method of `wrapper` to mimic the source of `reference`\n * with wrapper details in a comment at the top of the source body.\n *\n * @private\n * @param {Function} wrapper The function to modify.\n * @param {Function} reference The reference function.\n * @param {number} bitmask The bitmask flags. See `createWrap` for more details.\n * @returns {Function} Returns `wrapper`.\n */\n function setWrapToString(wrapper, reference, bitmask) {\n var source = (reference + '');\n return setToString(wrapper, insertWrapDetails(source, updateWrapDetails(getWrapDetails(source), bitmask)));\n }\n\n /**\n * Creates a function that'll short out and invoke `identity` instead\n * of `func` when it's called `HOT_COUNT` or more times in `HOT_SPAN`\n * milliseconds.\n *\n * @private\n * @param {Function} func The function to restrict.\n * @returns {Function} Returns the new shortable function.\n */\n function shortOut(func) {\n var count = 0,\n lastCalled = 0;\n\n return function() {\n var stamp = nativeNow(),\n remaining = HOT_SPAN - (stamp - lastCalled);\n\n lastCalled = stamp;\n if (remaining > 0) {\n if (++count >= HOT_COUNT) {\n return arguments[0];\n }\n } else {\n count = 0;\n }\n return func.apply(undefined, arguments);\n };\n }\n\n /**\n * A specialized version of `_.shuffle` which mutates and sets the size of `array`.\n *\n * @private\n * @param {Array} array The array to shuffle.\n * @param {number} [size=array.length] The size of `array`.\n * @returns {Array} Returns `array`.\n */\n function shuffleSelf(array, size) {\n var index = -1,\n length = array.length,\n lastIndex = length - 1;\n\n size = size === undefined ? length : size;\n while (++index < size) {\n var rand = baseRandom(index, lastIndex),\n value = array[rand];\n\n array[rand] = array[index];\n array[index] = value;\n }\n array.length = size;\n return array;\n }\n\n /**\n * Converts `string` to a property path array.\n *\n * @private\n * @param {string} string The string to convert.\n * @returns {Array} Returns the property path array.\n */\n var stringToPath = memoizeCapped(function(string) {\n var result = [];\n if (string.charCodeAt(0) === 46 /* . */) {\n result.push('');\n }\n string.replace(rePropName, function(match, number, quote, subString) {\n result.push(quote ? subString.replace(reEscapeChar, '$1') : (number || match));\n });\n return result;\n });\n\n /**\n * Converts `value` to a string key if it's not a string or symbol.\n *\n * @private\n * @param {*} value The value to inspect.\n * @returns {string|symbol} Returns the key.\n */\n function toKey(value) {\n if (typeof value == 'string' || isSymbol(value)) {\n return value;\n }\n var result = (value + '');\n return (result == '0' && (1 / value) == -INFINITY) ? '-0' : result;\n }\n\n /**\n * Converts `func` to its source code.\n *\n * @private\n * @param {Function} func The function to convert.\n * @returns {string} Returns the source code.\n */\n function toSource(func) {\n if (func != null) {\n try {\n return funcToString.call(func);\n } catch (e) {}\n try {\n return (func + '');\n } catch (e) {}\n }\n return '';\n }\n\n /**\n * Updates wrapper `details` based on `bitmask` flags.\n *\n * @private\n * @returns {Array} details The details to modify.\n * @param {number} bitmask The bitmask flags. See `createWrap` for more details.\n * @returns {Array} Returns `details`.\n */\n function updateWrapDetails(details, bitmask) {\n arrayEach(wrapFlags, function(pair) {\n var value = '_.' + pair[0];\n if ((bitmask & pair[1]) && !arrayIncludes(details, value)) {\n details.push(value);\n }\n });\n return details.sort();\n }\n\n /**\n * Creates a clone of `wrapper`.\n *\n * @private\n * @param {Object} wrapper The wrapper to clone.\n * @returns {Object} Returns the cloned wrapper.\n */\n function wrapperClone(wrapper) {\n if (wrapper instanceof LazyWrapper) {\n return wrapper.clone();\n }\n var result = new LodashWrapper(wrapper.__wrapped__, wrapper.__chain__);\n result.__actions__ = copyArray(wrapper.__actions__);\n result.__index__ = wrapper.__index__;\n result.__values__ = wrapper.__values__;\n return result;\n }\n\n /*------------------------------------------------------------------------*/\n\n /**\n * Creates an array of elements split into groups the length of `size`.\n * If `array` can't be split evenly, the final chunk will be the remaining\n * elements.\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category Array\n * @param {Array} array The array to process.\n * @param {number} [size=1] The length of each chunk\n * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.\n * @returns {Array} Returns the new array of chunks.\n * @example\n *\n * _.chunk(['a', 'b', 'c', 'd'], 2);\n * // => [['a', 'b'], ['c', 'd']]\n *\n * _.chunk(['a', 'b', 'c', 'd'], 3);\n * // => [['a', 'b', 'c'], ['d']]\n */\n function chunk(array, size, guard) {\n if ((guard ? isIterateeCall(array, size, guard) : size === undefined)) {\n size = 1;\n } else {\n size = nativeMax(toInteger(size), 0);\n }\n var length = array == null ? 0 : array.length;\n if (!length || size < 1) {\n return [];\n }\n var index = 0,\n resIndex = 0,\n result = Array(nativeCeil(length / size));\n\n while (index < length) {\n result[resIndex++] = baseSlice(array, index, (index += size));\n }\n return result;\n }\n\n /**\n * Creates an array with all falsey values removed. The values `false`, `null`,\n * `0`, `\"\"`, `undefined`, and `NaN` are falsey.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Array\n * @param {Array} array The array to compact.\n * @returns {Array} Returns the new array of filtered values.\n * @example\n *\n * _.compact([0, 1, false, 2, '', 3]);\n * // => [1, 2, 3]\n */\n function compact(array) {\n var index = -1,\n length = array == null ? 0 : array.length,\n resIndex = 0,\n result = [];\n\n while (++index < length) {\n var value = array[index];\n if (value) {\n result[resIndex++] = value;\n }\n }\n return result;\n }\n\n /**\n * Creates a new array concatenating `array` with any additional arrays\n * and/or values.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Array\n * @param {Array} array The array to concatenate.\n * @param {...*} [values] The values to concatenate.\n * @returns {Array} Returns the new concatenated array.\n * @example\n *\n * var array = [1];\n * var other = _.concat(array, 2, [3], [[4]]);\n *\n * console.log(other);\n * // => [1, 2, 3, [4]]\n *\n * console.log(array);\n * // => [1]\n */\n function concat() {\n var length = arguments.length;\n if (!length) {\n return [];\n }\n var args = Array(length - 1),\n array = arguments[0],\n index = length;\n\n while (index--) {\n args[index - 1] = arguments[index];\n }\n return arrayPush(isArray(array) ? copyArray(array) : [array], baseFlatten(args, 1));\n }\n\n /**\n * Creates an array of `array` values not included in the other given arrays\n * using [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)\n * for equality comparisons. The order and references of result values are\n * determined by the first array.\n *\n * **Note:** Unlike `_.pullAll`, this method returns a new array.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Array\n * @param {Array} array The array to inspect.\n * @param {...Array} [values] The values to exclude.\n * @returns {Array} Returns the new array of filtered values.\n * @see _.without, _.xor\n * @example\n *\n * _.difference([2, 1], [2, 3]);\n * // => [1]\n */\n var difference = baseRest(function(array, values) {\n return isArrayLikeObject(array)\n ? baseDifference(array, baseFlatten(values, 1, isArrayLikeObject, true))\n : [];\n });\n\n /**\n * This method is like `_.difference` except that it accepts `iteratee` which\n * is invoked for each element of `array` and `values` to generate the criterion\n * by which they're compared. The order and references of result values are\n * determined by the first array. The iteratee is invoked with one argument:\n * (value).\n *\n * **Note:** Unlike `_.pullAllBy`, this method returns a new array.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Array\n * @param {Array} array The array to inspect.\n * @param {...Array} [values] The values to exclude.\n * @param {Function} [iteratee=_.identity] The iteratee invoked per element.\n * @returns {Array} Returns the new array of filtered values.\n * @example\n *\n * _.differenceBy([2.1, 1.2], [2.3, 3.4], Math.floor);\n * // => [1.2]\n *\n * // The `_.property` iteratee shorthand.\n * _.differenceBy([{ 'x': 2 }, { 'x': 1 }], [{ 'x': 1 }], 'x');\n * // => [{ 'x': 2 }]\n */\n var differenceBy = baseRest(function(array, values) {\n var iteratee = last(values);\n if (isArrayLikeObject(iteratee)) {\n iteratee = undefined;\n }\n return isArrayLikeObject(array)\n ? baseDifference(array, baseFlatten(values, 1, isArrayLikeObject, true), getIteratee(iteratee, 2))\n : [];\n });\n\n /**\n * This method is like `_.difference` except that it accepts `comparator`\n * which is invoked to compare elements of `array` to `values`. The order and\n * references of result values are determined by the first array. The comparator\n * is invoked with two arguments: (arrVal, othVal).\n *\n * **Note:** Unlike `_.pullAllWith`, this method returns a new array.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Array\n * @param {Array} array The array to inspect.\n * @param {...Array} [values] The values to exclude.\n * @param {Function} [comparator] The comparator invoked per element.\n * @returns {Array} Returns the new array of filtered values.\n * @example\n *\n * var objects = [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }];\n *\n * _.differenceWith(objects, [{ 'x': 1, 'y': 2 }], _.isEqual);\n * // => [{ 'x': 2, 'y': 1 }]\n */\n var differenceWith = baseRest(function(array, values) {\n var comparator = last(values);\n if (isArrayLikeObject(comparator)) {\n comparator = undefined;\n }\n return isArrayLikeObject(array)\n ? baseDifference(array, baseFlatten(values, 1, isArrayLikeObject, true), undefined, comparator)\n : [];\n });\n\n /**\n * Creates a slice of `array` with `n` elements dropped from the beginning.\n *\n * @static\n * @memberOf _\n * @since 0.5.0\n * @category Array\n * @param {Array} array The array to query.\n * @param {number} [n=1] The number of elements to drop.\n * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.\n * @returns {Array} Returns the slice of `array`.\n * @example\n *\n * _.drop([1, 2, 3]);\n * // => [2, 3]\n *\n * _.drop([1, 2, 3], 2);\n * // => [3]\n *\n * _.drop([1, 2, 3], 5);\n * // => []\n *\n * _.drop([1, 2, 3], 0);\n * // => [1, 2, 3]\n */\n function drop(array, n, guard) {\n var length = array == null ? 0 : array.length;\n if (!length) {\n return [];\n }\n n = (guard || n === undefined) ? 1 : toInteger(n);\n return baseSlice(array, n < 0 ? 0 : n, length);\n }\n\n /**\n * Creates a slice of `array` with `n` elements dropped from the end.\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category Array\n * @param {Array} array The array to query.\n * @param {number} [n=1] The number of elements to drop.\n * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.\n * @returns {Array} Returns the slice of `array`.\n * @example\n *\n * _.dropRight([1, 2, 3]);\n * // => [1, 2]\n *\n * _.dropRight([1, 2, 3], 2);\n * // => [1]\n *\n * _.dropRight([1, 2, 3], 5);\n * // => []\n *\n * _.dropRight([1, 2, 3], 0);\n * // => [1, 2, 3]\n */\n function dropRight(array, n, guard) {\n var length = array == null ? 0 : array.length;\n if (!length) {\n return [];\n }\n n = (guard || n === undefined) ? 1 : toInteger(n);\n n = length - n;\n return baseSlice(array, 0, n < 0 ? 0 : n);\n }\n\n /**\n * Creates a slice of `array` excluding elements dropped from the end.\n * Elements are dropped until `predicate` returns falsey. The predicate is\n * invoked with three arguments: (value, index, array).\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category Array\n * @param {Array} array The array to query.\n * @param {Function} [predicate=_.identity] The function invoked per iteration.\n * @returns {Array} Returns the slice of `array`.\n * @example\n *\n * var users = [\n * { 'user': 'barney', 'active': true },\n * { 'user': 'fred', 'active': false },\n * { 'user': 'pebbles', 'active': false }\n * ];\n *\n * _.dropRightWhile(users, function(o) { return !o.active; });\n * // => objects for ['barney']\n *\n * // The `_.matches` iteratee shorthand.\n * _.dropRightWhile(users, { 'user': 'pebbles', 'active': false });\n * // => objects for ['barney', 'fred']\n *\n * // The `_.matchesProperty` iteratee shorthand.\n * _.dropRightWhile(users, ['active', false]);\n * // => objects for ['barney']\n *\n * // The `_.property` iteratee shorthand.\n * _.dropRightWhile(users, 'active');\n * // => objects for ['barney', 'fred', 'pebbles']\n */\n function dropRightWhile(array, predicate) {\n return (array && array.length)\n ? baseWhile(array, getIteratee(predicate, 3), true, true)\n : [];\n }\n\n /**\n * Creates a slice of `array` excluding elements dropped from the beginning.\n * Elements are dropped until `predicate` returns falsey. The predicate is\n * invoked with three arguments: (value, index, array).\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category Array\n * @param {Array} array The array to query.\n * @param {Function} [predicate=_.identity] The function invoked per iteration.\n * @returns {Array} Returns the slice of `array`.\n * @example\n *\n * var users = [\n * { 'user': 'barney', 'active': false },\n * { 'user': 'fred', 'active': false },\n * { 'user': 'pebbles', 'active': true }\n * ];\n *\n * _.dropWhile(users, function(o) { return !o.active; });\n * // => objects for ['pebbles']\n *\n * // The `_.matches` iteratee shorthand.\n * _.dropWhile(users, { 'user': 'barney', 'active': false });\n * // => objects for ['fred', 'pebbles']\n *\n * // The `_.matchesProperty` iteratee shorthand.\n * _.dropWhile(users, ['active', false]);\n * // => objects for ['pebbles']\n *\n * // The `_.property` iteratee shorthand.\n * _.dropWhile(users, 'active');\n * // => objects for ['barney', 'fred', 'pebbles']\n */\n function dropWhile(array, predicate) {\n return (array && array.length)\n ? baseWhile(array, getIteratee(predicate, 3), true)\n : [];\n }\n\n /**\n * Fills elements of `array` with `value` from `start` up to, but not\n * including, `end`.\n *\n * **Note:** This method mutates `array`.\n *\n * @static\n * @memberOf _\n * @since 3.2.0\n * @category Array\n * @param {Array} array The array to fill.\n * @param {*} value The value to fill `array` with.\n * @param {number} [start=0] The start position.\n * @param {number} [end=array.length] The end position.\n * @returns {Array} Returns `array`.\n * @example\n *\n * var array = [1, 2, 3];\n *\n * _.fill(array, 'a');\n * console.log(array);\n * // => ['a', 'a', 'a']\n *\n * _.fill(Array(3), 2);\n * // => [2, 2, 2]\n *\n * _.fill([4, 6, 8, 10], '*', 1, 3);\n * // => [4, '*', '*', 10]\n */\n function fill(array, value, start, end) {\n var length = array == null ? 0 : array.length;\n if (!length) {\n return [];\n }\n if (start && typeof start != 'number' && isIterateeCall(array, value, start)) {\n start = 0;\n end = length;\n }\n return baseFill(array, value, start, end);\n }\n\n /**\n * This method is like `_.find` except that it returns the index of the first\n * element `predicate` returns truthy for instead of the element itself.\n *\n * @static\n * @memberOf _\n * @since 1.1.0\n * @category Array\n * @param {Array} array The array to inspect.\n * @param {Function} [predicate=_.identity] The function invoked per iteration.\n * @param {number} [fromIndex=0] The index to search from.\n * @returns {number} Returns the index of the found element, else `-1`.\n * @example\n *\n * var users = [\n * { 'user': 'barney', 'active': false },\n * { 'user': 'fred', 'active': false },\n * { 'user': 'pebbles', 'active': true }\n * ];\n *\n * _.findIndex(users, function(o) { return o.user == 'barney'; });\n * // => 0\n *\n * // The `_.matches` iteratee shorthand.\n * _.findIndex(users, { 'user': 'fred', 'active': false });\n * // => 1\n *\n * // The `_.matchesProperty` iteratee shorthand.\n * _.findIndex(users, ['active', false]);\n * // => 0\n *\n * // The `_.property` iteratee shorthand.\n * _.findIndex(users, 'active');\n * // => 2\n */\n function findIndex(array, predicate, fromIndex) {\n var length = array == null ? 0 : array.length;\n if (!length) {\n return -1;\n }\n var index = fromIndex == null ? 0 : toInteger(fromIndex);\n if (index < 0) {\n index = nativeMax(length + index, 0);\n }\n return baseFindIndex(array, getIteratee(predicate, 3), index);\n }\n\n /**\n * This method is like `_.findIndex` except that it iterates over elements\n * of `collection` from right to left.\n *\n * @static\n * @memberOf _\n * @since 2.0.0\n * @category Array\n * @param {Array} array The array to inspect.\n * @param {Function} [predicate=_.identity] The function invoked per iteration.\n * @param {number} [fromIndex=array.length-1] The index to search from.\n * @returns {number} Returns the index of the found element, else `-1`.\n * @example\n *\n * var users = [\n * { 'user': 'barney', 'active': true },\n * { 'user': 'fred', 'active': false },\n * { 'user': 'pebbles', 'active': false }\n * ];\n *\n * _.findLastIndex(users, function(o) { return o.user == 'pebbles'; });\n * // => 2\n *\n * // The `_.matches` iteratee shorthand.\n * _.findLastIndex(users, { 'user': 'barney', 'active': true });\n * // => 0\n *\n * // The `_.matchesProperty` iteratee shorthand.\n * _.findLastIndex(users, ['active', false]);\n * // => 2\n *\n * // The `_.property` iteratee shorthand.\n * _.findLastIndex(users, 'active');\n * // => 0\n */\n function findLastIndex(array, predicate, fromIndex) {\n var length = array == null ? 0 : array.length;\n if (!length) {\n return -1;\n }\n var index = length - 1;\n if (fromIndex !== undefined) {\n index = toInteger(fromIndex);\n index = fromIndex < 0\n ? nativeMax(length + index, 0)\n : nativeMin(index, length - 1);\n }\n return baseFindIndex(array, getIteratee(predicate, 3), index, true);\n }\n\n /**\n * Flattens `array` a single level deep.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Array\n * @param {Array} array The array to flatten.\n * @returns {Array} Returns the new flattened array.\n * @example\n *\n * _.flatten([1, [2, [3, [4]], 5]]);\n * // => [1, 2, [3, [4]], 5]\n */\n function flatten(array) {\n var length = array == null ? 0 : array.length;\n return length ? baseFlatten(array, 1) : [];\n }\n\n /**\n * Recursively flattens `array`.\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category Array\n * @param {Array} array The array to flatten.\n * @returns {Array} Returns the new flattened array.\n * @example\n *\n * _.flattenDeep([1, [2, [3, [4]], 5]]);\n * // => [1, 2, 3, 4, 5]\n */\n function flattenDeep(array) {\n var length = array == null ? 0 : array.length;\n return length ? baseFlatten(array, INFINITY) : [];\n }\n\n /**\n * Recursively flatten `array` up to `depth` times.\n *\n * @static\n * @memberOf _\n * @since 4.4.0\n * @category Array\n * @param {Array} array The array to flatten.\n * @param {number} [depth=1] The maximum recursion depth.\n * @returns {Array} Returns the new flattened array.\n * @example\n *\n * var array = [1, [2, [3, [4]], 5]];\n *\n * _.flattenDepth(array, 1);\n * // => [1, 2, [3, [4]], 5]\n *\n * _.flattenDepth(array, 2);\n * // => [1, 2, 3, [4], 5]\n */\n function flattenDepth(array, depth) {\n var length = array == null ? 0 : array.length;\n if (!length) {\n return [];\n }\n depth = depth === undefined ? 1 : toInteger(depth);\n return baseFlatten(array, depth);\n }\n\n /**\n * The inverse of `_.toPairs`; this method returns an object composed\n * from key-value `pairs`.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Array\n * @param {Array} pairs The key-value pairs.\n * @returns {Object} Returns the new object.\n * @example\n *\n * _.fromPairs([['a', 1], ['b', 2]]);\n * // => { 'a': 1, 'b': 2 }\n */\n function fromPairs(pairs) {\n var index = -1,\n length = pairs == null ? 0 : pairs.length,\n result = {};\n\n while (++index < length) {\n var pair = pairs[index];\n result[pair[0]] = pair[1];\n }\n return result;\n }\n\n /**\n * Gets the first element of `array`.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @alias first\n * @category Array\n * @param {Array} array The array to query.\n * @returns {*} Returns the first element of `array`.\n * @example\n *\n * _.head([1, 2, 3]);\n * // => 1\n *\n * _.head([]);\n * // => undefined\n */\n function head(array) {\n return (array && array.length) ? array[0] : undefined;\n }\n\n /**\n * Gets the index at which the first occurrence of `value` is found in `array`\n * using [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)\n * for equality comparisons. If `fromIndex` is negative, it's used as the\n * offset from the end of `array`.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Array\n * @param {Array} array The array to inspect.\n * @param {*} value The value to search for.\n * @param {number} [fromIndex=0] The index to search from.\n * @returns {number} Returns the index of the matched value, else `-1`.\n * @example\n *\n * _.indexOf([1, 2, 1, 2], 2);\n * // => 1\n *\n * // Search from the `fromIndex`.\n * _.indexOf([1, 2, 1, 2], 2, 2);\n * // => 3\n */\n function indexOf(array, value, fromIndex) {\n var length = array == null ? 0 : array.length;\n if (!length) {\n return -1;\n }\n var index = fromIndex == null ? 0 : toInteger(fromIndex);\n if (index < 0) {\n index = nativeMax(length + index, 0);\n }\n return baseIndexOf(array, value, index);\n }\n\n /**\n * Gets all but the last element of `array`.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Array\n * @param {Array} array The array to query.\n * @returns {Array} Returns the slice of `array`.\n * @example\n *\n * _.initial([1, 2, 3]);\n * // => [1, 2]\n */\n function initial(array) {\n var length = array == null ? 0 : array.length;\n return length ? baseSlice(array, 0, -1) : [];\n }\n\n /**\n * Creates an array of unique values that are included in all given arrays\n * using [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)\n * for equality comparisons. The order and references of result values are\n * determined by the first array.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Array\n * @param {...Array} [arrays] The arrays to inspect.\n * @returns {Array} Returns the new array of intersecting values.\n * @example\n *\n * _.intersection([2, 1], [2, 3]);\n * // => [2]\n */\n var intersection = baseRest(function(arrays) {\n var mapped = arrayMap(arrays, castArrayLikeObject);\n return (mapped.length && mapped[0] === arrays[0])\n ? baseIntersection(mapped)\n : [];\n });\n\n /**\n * This method is like `_.intersection` except that it accepts `iteratee`\n * which is invoked for each element of each `arrays` to generate the criterion\n * by which they're compared. The order and references of result values are\n * determined by the first array. The iteratee is invoked with one argument:\n * (value).\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Array\n * @param {...Array} [arrays] The arrays to inspect.\n * @param {Function} [iteratee=_.identity] The iteratee invoked per element.\n * @returns {Array} Returns the new array of intersecting values.\n * @example\n *\n * _.intersectionBy([2.1, 1.2], [2.3, 3.4], Math.floor);\n * // => [2.1]\n *\n * // The `_.property` iteratee shorthand.\n * _.intersectionBy([{ 'x': 1 }], [{ 'x': 2 }, { 'x': 1 }], 'x');\n * // => [{ 'x': 1 }]\n */\n var intersectionBy = baseRest(function(arrays) {\n var iteratee = last(arrays),\n mapped = arrayMap(arrays, castArrayLikeObject);\n\n if (iteratee === last(mapped)) {\n iteratee = undefined;\n } else {\n mapped.pop();\n }\n return (mapped.length && mapped[0] === arrays[0])\n ? baseIntersection(mapped, getIteratee(iteratee, 2))\n : [];\n });\n\n /**\n * This method is like `_.intersection` except that it accepts `comparator`\n * which is invoked to compare elements of `arrays`. The order and references\n * of result values are determined by the first array. The comparator is\n * invoked with two arguments: (arrVal, othVal).\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Array\n * @param {...Array} [arrays] The arrays to inspect.\n * @param {Function} [comparator] The comparator invoked per element.\n * @returns {Array} Returns the new array of intersecting values.\n * @example\n *\n * var objects = [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }];\n * var others = [{ 'x': 1, 'y': 1 }, { 'x': 1, 'y': 2 }];\n *\n * _.intersectionWith(objects, others, _.isEqual);\n * // => [{ 'x': 1, 'y': 2 }]\n */\n var intersectionWith = baseRest(function(arrays) {\n var comparator = last(arrays),\n mapped = arrayMap(arrays, castArrayLikeObject);\n\n comparator = typeof comparator == 'function' ? comparator : undefined;\n if (comparator) {\n mapped.pop();\n }\n return (mapped.length && mapped[0] === arrays[0])\n ? baseIntersection(mapped, undefined, comparator)\n : [];\n });\n\n /**\n * Converts all elements in `array` into a string separated by `separator`.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Array\n * @param {Array} array The array to convert.\n * @param {string} [separator=','] The element separator.\n * @returns {string} Returns the joined string.\n * @example\n *\n * _.join(['a', 'b', 'c'], '~');\n * // => 'a~b~c'\n */\n function join(array, separator) {\n return array == null ? '' : nativeJoin.call(array, separator);\n }\n\n /**\n * Gets the last element of `array`.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Array\n * @param {Array} array The array to query.\n * @returns {*} Returns the last element of `array`.\n * @example\n *\n * _.last([1, 2, 3]);\n * // => 3\n */\n function last(array) {\n var length = array == null ? 0 : array.length;\n return length ? array[length - 1] : undefined;\n }\n\n /**\n * This method is like `_.indexOf` except that it iterates over elements of\n * `array` from right to left.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Array\n * @param {Array} array The array to inspect.\n * @param {*} value The value to search for.\n * @param {number} [fromIndex=array.length-1] The index to search from.\n * @returns {number} Returns the index of the matched value, else `-1`.\n * @example\n *\n * _.lastIndexOf([1, 2, 1, 2], 2);\n * // => 3\n *\n * // Search from the `fromIndex`.\n * _.lastIndexOf([1, 2, 1, 2], 2, 2);\n * // => 1\n */\n function lastIndexOf(array, value, fromIndex) {\n var length = array == null ? 0 : array.length;\n if (!length) {\n return -1;\n }\n var index = length;\n if (fromIndex !== undefined) {\n index = toInteger(fromIndex);\n index = index < 0 ? nativeMax(length + index, 0) : nativeMin(index, length - 1);\n }\n return value === value\n ? strictLastIndexOf(array, value, index)\n : baseFindIndex(array, baseIsNaN, index, true);\n }\n\n /**\n * Gets the element at index `n` of `array`. If `n` is negative, the nth\n * element from the end is returned.\n *\n * @static\n * @memberOf _\n * @since 4.11.0\n * @category Array\n * @param {Array} array The array to query.\n * @param {number} [n=0] The index of the element to return.\n * @returns {*} Returns the nth element of `array`.\n * @example\n *\n * var array = ['a', 'b', 'c', 'd'];\n *\n * _.nth(array, 1);\n * // => 'b'\n *\n * _.nth(array, -2);\n * // => 'c';\n */\n function nth(array, n) {\n return (array && array.length) ? baseNth(array, toInteger(n)) : undefined;\n }\n\n /**\n * Removes all given values from `array` using\n * [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)\n * for equality comparisons.\n *\n * **Note:** Unlike `_.without`, this method mutates `array`. Use `_.remove`\n * to remove elements from an array by predicate.\n *\n * @static\n * @memberOf _\n * @since 2.0.0\n * @category Array\n * @param {Array} array The array to modify.\n * @param {...*} [values] The values to remove.\n * @returns {Array} Returns `array`.\n * @example\n *\n * var array = ['a', 'b', 'c', 'a', 'b', 'c'];\n *\n * _.pull(array, 'a', 'c');\n * console.log(array);\n * // => ['b', 'b']\n */\n var pull = baseRest(pullAll);\n\n /**\n * This method is like `_.pull` except that it accepts an array of values to remove.\n *\n * **Note:** Unlike `_.difference`, this method mutates `array`.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Array\n * @param {Array} array The array to modify.\n * @param {Array} values The values to remove.\n * @returns {Array} Returns `array`.\n * @example\n *\n * var array = ['a', 'b', 'c', 'a', 'b', 'c'];\n *\n * _.pullAll(array, ['a', 'c']);\n * console.log(array);\n * // => ['b', 'b']\n */\n function pullAll(array, values) {\n return (array && array.length && values && values.length)\n ? basePullAll(array, values)\n : array;\n }\n\n /**\n * This method is like `_.pullAll` except that it accepts `iteratee` which is\n * invoked for each element of `array` and `values` to generate the criterion\n * by which they're compared. The iteratee is invoked with one argument: (value).\n *\n * **Note:** Unlike `_.differenceBy`, this method mutates `array`.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Array\n * @param {Array} array The array to modify.\n * @param {Array} values The values to remove.\n * @param {Function} [iteratee=_.identity] The iteratee invoked per element.\n * @returns {Array} Returns `array`.\n * @example\n *\n * var array = [{ 'x': 1 }, { 'x': 2 }, { 'x': 3 }, { 'x': 1 }];\n *\n * _.pullAllBy(array, [{ 'x': 1 }, { 'x': 3 }], 'x');\n * console.log(array);\n * // => [{ 'x': 2 }]\n */\n function pullAllBy(array, values, iteratee) {\n return (array && array.length && values && values.length)\n ? basePullAll(array, values, getIteratee(iteratee, 2))\n : array;\n }\n\n /**\n * This method is like `_.pullAll` except that it accepts `comparator` which\n * is invoked to compare elements of `array` to `values`. The comparator is\n * invoked with two arguments: (arrVal, othVal).\n *\n * **Note:** Unlike `_.differenceWith`, this method mutates `array`.\n *\n * @static\n * @memberOf _\n * @since 4.6.0\n * @category Array\n * @param {Array} array The array to modify.\n * @param {Array} values The values to remove.\n * @param {Function} [comparator] The comparator invoked per element.\n * @returns {Array} Returns `array`.\n * @example\n *\n * var array = [{ 'x': 1, 'y': 2 }, { 'x': 3, 'y': 4 }, { 'x': 5, 'y': 6 }];\n *\n * _.pullAllWith(array, [{ 'x': 3, 'y': 4 }], _.isEqual);\n * console.log(array);\n * // => [{ 'x': 1, 'y': 2 }, { 'x': 5, 'y': 6 }]\n */\n function pullAllWith(array, values, comparator) {\n return (array && array.length && values && values.length)\n ? basePullAll(array, values, undefined, comparator)\n : array;\n }\n\n /**\n * Removes elements from `array` corresponding to `indexes` and returns an\n * array of removed elements.\n *\n * **Note:** Unlike `_.at`, this method mutates `array`.\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category Array\n * @param {Array} array The array to modify.\n * @param {...(number|number[])} [indexes] The indexes of elements to remove.\n * @returns {Array} Returns the new array of removed elements.\n * @example\n *\n * var array = ['a', 'b', 'c', 'd'];\n * var pulled = _.pullAt(array, [1, 3]);\n *\n * console.log(array);\n * // => ['a', 'c']\n *\n * console.log(pulled);\n * // => ['b', 'd']\n */\n var pullAt = flatRest(function(array, indexes) {\n var length = array == null ? 0 : array.length,\n result = baseAt(array, indexes);\n\n basePullAt(array, arrayMap(indexes, function(index) {\n return isIndex(index, length) ? +index : index;\n }).sort(compareAscending));\n\n return result;\n });\n\n /**\n * Removes all elements from `array` that `predicate` returns truthy for\n * and returns an array of the removed elements. The predicate is invoked\n * with three arguments: (value, index, array).\n *\n * **Note:** Unlike `_.filter`, this method mutates `array`. Use `_.pull`\n * to pull elements from an array by value.\n *\n * @static\n * @memberOf _\n * @since 2.0.0\n * @category Array\n * @param {Array} array The array to modify.\n * @param {Function} [predicate=_.identity] The function invoked per iteration.\n * @returns {Array} Returns the new array of removed elements.\n * @example\n *\n * var array = [1, 2, 3, 4];\n * var evens = _.remove(array, function(n) {\n * return n % 2 == 0;\n * });\n *\n * console.log(array);\n * // => [1, 3]\n *\n * console.log(evens);\n * // => [2, 4]\n */\n function remove(array, predicate) {\n var result = [];\n if (!(array && array.length)) {\n return result;\n }\n var index = -1,\n indexes = [],\n length = array.length;\n\n predicate = getIteratee(predicate, 3);\n while (++index < length) {\n var value = array[index];\n if (predicate(value, index, array)) {\n result.push(value);\n indexes.push(index);\n }\n }\n basePullAt(array, indexes);\n return result;\n }\n\n /**\n * Reverses `array` so that the first element becomes the last, the second\n * element becomes the second to last, and so on.\n *\n * **Note:** This method mutates `array` and is based on\n * [`Array#reverse`](https://mdn.io/Array/reverse).\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Array\n * @param {Array} array The array to modify.\n * @returns {Array} Returns `array`.\n * @example\n *\n * var array = [1, 2, 3];\n *\n * _.reverse(array);\n * // => [3, 2, 1]\n *\n * console.log(array);\n * // => [3, 2, 1]\n */\n function reverse(array) {\n return array == null ? array : nativeReverse.call(array);\n }\n\n /**\n * Creates a slice of `array` from `start` up to, but not including, `end`.\n *\n * **Note:** This method is used instead of\n * [`Array#slice`](https://mdn.io/Array/slice) to ensure dense arrays are\n * returned.\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category Array\n * @param {Array} array The array to slice.\n * @param {number} [start=0] The start position.\n * @param {number} [end=array.length] The end position.\n * @returns {Array} Returns the slice of `array`.\n */\n function slice(array, start, end) {\n var length = array == null ? 0 : array.length;\n if (!length) {\n return [];\n }\n if (end && typeof end != 'number' && isIterateeCall(array, start, end)) {\n start = 0;\n end = length;\n }\n else {\n start = start == null ? 0 : toInteger(start);\n end = end === undefined ? length : toInteger(end);\n }\n return baseSlice(array, start, end);\n }\n\n /**\n * Uses a binary search to determine the lowest index at which `value`\n * should be inserted into `array` in order to maintain its sort order.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Array\n * @param {Array} array The sorted array to inspect.\n * @param {*} value The value to evaluate.\n * @returns {number} Returns the index at which `value` should be inserted\n * into `array`.\n * @example\n *\n * _.sortedIndex([30, 50], 40);\n * // => 1\n */\n function sortedIndex(array, value) {\n return baseSortedIndex(array, value);\n }\n\n /**\n * This method is like `_.sortedIndex` except that it accepts `iteratee`\n * which is invoked for `value` and each element of `array` to compute their\n * sort ranking. The iteratee is invoked with one argument: (value).\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Array\n * @param {Array} array The sorted array to inspect.\n * @param {*} value The value to evaluate.\n * @param {Function} [iteratee=_.identity] The iteratee invoked per element.\n * @returns {number} Returns the index at which `value` should be inserted\n * into `array`.\n * @example\n *\n * var objects = [{ 'x': 4 }, { 'x': 5 }];\n *\n * _.sortedIndexBy(objects, { 'x': 4 }, function(o) { return o.x; });\n * // => 0\n *\n * // The `_.property` iteratee shorthand.\n * _.sortedIndexBy(objects, { 'x': 4 }, 'x');\n * // => 0\n */\n function sortedIndexBy(array, value, iteratee) {\n return baseSortedIndexBy(array, value, getIteratee(iteratee, 2));\n }\n\n /**\n * This method is like `_.indexOf` except that it performs a binary\n * search on a sorted `array`.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Array\n * @param {Array} array The array to inspect.\n * @param {*} value The value to search for.\n * @returns {number} Returns the index of the matched value, else `-1`.\n * @example\n *\n * _.sortedIndexOf([4, 5, 5, 5, 6], 5);\n * // => 1\n */\n function sortedIndexOf(array, value) {\n var length = array == null ? 0 : array.length;\n if (length) {\n var index = baseSortedIndex(array, value);\n if (index < length && eq(array[index], value)) {\n return index;\n }\n }\n return -1;\n }\n\n /**\n * This method is like `_.sortedIndex` except that it returns the highest\n * index at which `value` should be inserted into `array` in order to\n * maintain its sort order.\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category Array\n * @param {Array} array The sorted array to inspect.\n * @param {*} value The value to evaluate.\n * @returns {number} Returns the index at which `value` should be inserted\n * into `array`.\n * @example\n *\n * _.sortedLastIndex([4, 5, 5, 5, 6], 5);\n * // => 4\n */\n function sortedLastIndex(array, value) {\n return baseSortedIndex(array, value, true);\n }\n\n /**\n * This method is like `_.sortedLastIndex` except that it accepts `iteratee`\n * which is invoked for `value` and each element of `array` to compute their\n * sort ranking. The iteratee is invoked with one argument: (value).\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Array\n * @param {Array} array The sorted array to inspect.\n * @param {*} value The value to evaluate.\n * @param {Function} [iteratee=_.identity] The iteratee invoked per element.\n * @returns {number} Returns the index at which `value` should be inserted\n * into `array`.\n * @example\n *\n * var objects = [{ 'x': 4 }, { 'x': 5 }];\n *\n * _.sortedLastIndexBy(objects, { 'x': 4 }, function(o) { return o.x; });\n * // => 1\n *\n * // The `_.property` iteratee shorthand.\n * _.sortedLastIndexBy(objects, { 'x': 4 }, 'x');\n * // => 1\n */\n function sortedLastIndexBy(array, value, iteratee) {\n return baseSortedIndexBy(array, value, getIteratee(iteratee, 2), true);\n }\n\n /**\n * This method is like `_.lastIndexOf` except that it performs a binary\n * search on a sorted `array`.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Array\n * @param {Array} array The array to inspect.\n * @param {*} value The value to search for.\n * @returns {number} Returns the index of the matched value, else `-1`.\n * @example\n *\n * _.sortedLastIndexOf([4, 5, 5, 5, 6], 5);\n * // => 3\n */\n function sortedLastIndexOf(array, value) {\n var length = array == null ? 0 : array.length;\n if (length) {\n var index = baseSortedIndex(array, value, true) - 1;\n if (eq(array[index], value)) {\n return index;\n }\n }\n return -1;\n }\n\n /**\n * This method is like `_.uniq` except that it's designed and optimized\n * for sorted arrays.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Array\n * @param {Array} array The array to inspect.\n * @returns {Array} Returns the new duplicate free array.\n * @example\n *\n * _.sortedUniq([1, 1, 2]);\n * // => [1, 2]\n */\n function sortedUniq(array) {\n return (array && array.length)\n ? baseSortedUniq(array)\n : [];\n }\n\n /**\n * This method is like `_.uniqBy` except that it's designed and optimized\n * for sorted arrays.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Array\n * @param {Array} array The array to inspect.\n * @param {Function} [iteratee] The iteratee invoked per element.\n * @returns {Array} Returns the new duplicate free array.\n * @example\n *\n * _.sortedUniqBy([1.1, 1.2, 2.3, 2.4], Math.floor);\n * // => [1.1, 2.3]\n */\n function sortedUniqBy(array, iteratee) {\n return (array && array.length)\n ? baseSortedUniq(array, getIteratee(iteratee, 2))\n : [];\n }\n\n /**\n * Gets all but the first element of `array`.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Array\n * @param {Array} array The array to query.\n * @returns {Array} Returns the slice of `array`.\n * @example\n *\n * _.tail([1, 2, 3]);\n * // => [2, 3]\n */\n function tail(array) {\n var length = array == null ? 0 : array.length;\n return length ? baseSlice(array, 1, length) : [];\n }\n\n /**\n * Creates a slice of `array` with `n` elements taken from the beginning.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Array\n * @param {Array} array The array to query.\n * @param {number} [n=1] The number of elements to take.\n * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.\n * @returns {Array} Returns the slice of `array`.\n * @example\n *\n * _.take([1, 2, 3]);\n * // => [1]\n *\n * _.take([1, 2, 3], 2);\n * // => [1, 2]\n *\n * _.take([1, 2, 3], 5);\n * // => [1, 2, 3]\n *\n * _.take([1, 2, 3], 0);\n * // => []\n */\n function take(array, n, guard) {\n if (!(array && array.length)) {\n return [];\n }\n n = (guard || n === undefined) ? 1 : toInteger(n);\n return baseSlice(array, 0, n < 0 ? 0 : n);\n }\n\n /**\n * Creates a slice of `array` with `n` elements taken from the end.\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category Array\n * @param {Array} array The array to query.\n * @param {number} [n=1] The number of elements to take.\n * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.\n * @returns {Array} Returns the slice of `array`.\n * @example\n *\n * _.takeRight([1, 2, 3]);\n * // => [3]\n *\n * _.takeRight([1, 2, 3], 2);\n * // => [2, 3]\n *\n * _.takeRight([1, 2, 3], 5);\n * // => [1, 2, 3]\n *\n * _.takeRight([1, 2, 3], 0);\n * // => []\n */\n function takeRight(array, n, guard) {\n var length = array == null ? 0 : array.length;\n if (!length) {\n return [];\n }\n n = (guard || n === undefined) ? 1 : toInteger(n);\n n = length - n;\n return baseSlice(array, n < 0 ? 0 : n, length);\n }\n\n /**\n * Creates a slice of `array` with elements taken from the end. Elements are\n * taken until `predicate` returns falsey. The predicate is invoked with\n * three arguments: (value, index, array).\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category Array\n * @param {Array} array The array to query.\n * @param {Function} [predicate=_.identity] The function invoked per iteration.\n * @returns {Array} Returns the slice of `array`.\n * @example\n *\n * var users = [\n * { 'user': 'barney', 'active': true },\n * { 'user': 'fred', 'active': false },\n * { 'user': 'pebbles', 'active': false }\n * ];\n *\n * _.takeRightWhile(users, function(o) { return !o.active; });\n * // => objects for ['fred', 'pebbles']\n *\n * // The `_.matches` iteratee shorthand.\n * _.takeRightWhile(users, { 'user': 'pebbles', 'active': false });\n * // => objects for ['pebbles']\n *\n * // The `_.matchesProperty` iteratee shorthand.\n * _.takeRightWhile(users, ['active', false]);\n * // => objects for ['fred', 'pebbles']\n *\n * // The `_.property` iteratee shorthand.\n * _.takeRightWhile(users, 'active');\n * // => []\n */\n function takeRightWhile(array, predicate) {\n return (array && array.length)\n ? baseWhile(array, getIteratee(predicate, 3), false, true)\n : [];\n }\n\n /**\n * Creates a slice of `array` with elements taken from the beginning. Elements\n * are taken until `predicate` returns falsey. The predicate is invoked with\n * three arguments: (value, index, array).\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category Array\n * @param {Array} array The array to query.\n * @param {Function} [predicate=_.identity] The function invoked per iteration.\n * @returns {Array} Returns the slice of `array`.\n * @example\n *\n * var users = [\n * { 'user': 'barney', 'active': false },\n * { 'user': 'fred', 'active': false },\n * { 'user': 'pebbles', 'active': true }\n * ];\n *\n * _.takeWhile(users, function(o) { return !o.active; });\n * // => objects for ['barney', 'fred']\n *\n * // The `_.matches` iteratee shorthand.\n * _.takeWhile(users, { 'user': 'barney', 'active': false });\n * // => objects for ['barney']\n *\n * // The `_.matchesProperty` iteratee shorthand.\n * _.takeWhile(users, ['active', false]);\n * // => objects for ['barney', 'fred']\n *\n * // The `_.property` iteratee shorthand.\n * _.takeWhile(users, 'active');\n * // => []\n */\n function takeWhile(array, predicate) {\n return (array && array.length)\n ? baseWhile(array, getIteratee(predicate, 3))\n : [];\n }\n\n /**\n * Creates an array of unique values, in order, from all given arrays using\n * [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)\n * for equality comparisons.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Array\n * @param {...Array} [arrays] The arrays to inspect.\n * @returns {Array} Returns the new array of combined values.\n * @example\n *\n * _.union([2], [1, 2]);\n * // => [2, 1]\n */\n var union = baseRest(function(arrays) {\n return baseUniq(baseFlatten(arrays, 1, isArrayLikeObject, true));\n });\n\n /**\n * This method is like `_.union` except that it accepts `iteratee` which is\n * invoked for each element of each `arrays` to generate the criterion by\n * which uniqueness is computed. Result values are chosen from the first\n * array in which the value occurs. The iteratee is invoked with one argument:\n * (value).\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Array\n * @param {...Array} [arrays] The arrays to inspect.\n * @param {Function} [iteratee=_.identity] The iteratee invoked per element.\n * @returns {Array} Returns the new array of combined values.\n * @example\n *\n * _.unionBy([2.1], [1.2, 2.3], Math.floor);\n * // => [2.1, 1.2]\n *\n * // The `_.property` iteratee shorthand.\n * _.unionBy([{ 'x': 1 }], [{ 'x': 2 }, { 'x': 1 }], 'x');\n * // => [{ 'x': 1 }, { 'x': 2 }]\n */\n var unionBy = baseRest(function(arrays) {\n var iteratee = last(arrays);\n if (isArrayLikeObject(iteratee)) {\n iteratee = undefined;\n }\n return baseUniq(baseFlatten(arrays, 1, isArrayLikeObject, true), getIteratee(iteratee, 2));\n });\n\n /**\n * This method is like `_.union` except that it accepts `comparator` which\n * is invoked to compare elements of `arrays`. Result values are chosen from\n * the first array in which the value occurs. The comparator is invoked\n * with two arguments: (arrVal, othVal).\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Array\n * @param {...Array} [arrays] The arrays to inspect.\n * @param {Function} [comparator] The comparator invoked per element.\n * @returns {Array} Returns the new array of combined values.\n * @example\n *\n * var objects = [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }];\n * var others = [{ 'x': 1, 'y': 1 }, { 'x': 1, 'y': 2 }];\n *\n * _.unionWith(objects, others, _.isEqual);\n * // => [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }, { 'x': 1, 'y': 1 }]\n */\n var unionWith = baseRest(function(arrays) {\n var comparator = last(arrays);\n comparator = typeof comparator == 'function' ? comparator : undefined;\n return baseUniq(baseFlatten(arrays, 1, isArrayLikeObject, true), undefined, comparator);\n });\n\n /**\n * Creates a duplicate-free version of an array, using\n * [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)\n * for equality comparisons, in which only the first occurrence of each element\n * is kept. The order of result values is determined by the order they occur\n * in the array.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Array\n * @param {Array} array The array to inspect.\n * @returns {Array} Returns the new duplicate free array.\n * @example\n *\n * _.uniq([2, 1, 2]);\n * // => [2, 1]\n */\n function uniq(array) {\n return (array && array.length) ? baseUniq(array) : [];\n }\n\n /**\n * This method is like `_.uniq` except that it accepts `iteratee` which is\n * invoked for each element in `array` to generate the criterion by which\n * uniqueness is computed. The order of result values is determined by the\n * order they occur in the array. The iteratee is invoked with one argument:\n * (value).\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Array\n * @param {Array} array The array to inspect.\n * @param {Function} [iteratee=_.identity] The iteratee invoked per element.\n * @returns {Array} Returns the new duplicate free array.\n * @example\n *\n * _.uniqBy([2.1, 1.2, 2.3], Math.floor);\n * // => [2.1, 1.2]\n *\n * // The `_.property` iteratee shorthand.\n * _.uniqBy([{ 'x': 1 }, { 'x': 2 }, { 'x': 1 }], 'x');\n * // => [{ 'x': 1 }, { 'x': 2 }]\n */\n function uniqBy(array, iteratee) {\n return (array && array.length) ? baseUniq(array, getIteratee(iteratee, 2)) : [];\n }\n\n /**\n * This method is like `_.uniq` except that it accepts `comparator` which\n * is invoked to compare elements of `array`. The order of result values is\n * determined by the order they occur in the array.The comparator is invoked\n * with two arguments: (arrVal, othVal).\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Array\n * @param {Array} array The array to inspect.\n * @param {Function} [comparator] The comparator invoked per element.\n * @returns {Array} Returns the new duplicate free array.\n * @example\n *\n * var objects = [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }, { 'x': 1, 'y': 2 }];\n *\n * _.uniqWith(objects, _.isEqual);\n * // => [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }]\n */\n function uniqWith(array, comparator) {\n comparator = typeof comparator == 'function' ? comparator : undefined;\n return (array && array.length) ? baseUniq(array, undefined, comparator) : [];\n }\n\n /**\n * This method is like `_.zip` except that it accepts an array of grouped\n * elements and creates an array regrouping the elements to their pre-zip\n * configuration.\n *\n * @static\n * @memberOf _\n * @since 1.2.0\n * @category Array\n * @param {Array} array The array of grouped elements to process.\n * @returns {Array} Returns the new array of regrouped elements.\n * @example\n *\n * var zipped = _.zip(['a', 'b'], [1, 2], [true, false]);\n * // => [['a', 1, true], ['b', 2, false]]\n *\n * _.unzip(zipped);\n * // => [['a', 'b'], [1, 2], [true, false]]\n */\n function unzip(array) {\n if (!(array && array.length)) {\n return [];\n }\n var length = 0;\n array = arrayFilter(array, function(group) {\n if (isArrayLikeObject(group)) {\n length = nativeMax(group.length, length);\n return true;\n }\n });\n return baseTimes(length, function(index) {\n return arrayMap(array, baseProperty(index));\n });\n }\n\n /**\n * This method is like `_.unzip` except that it accepts `iteratee` to specify\n * how regrouped values should be combined. The iteratee is invoked with the\n * elements of each group: (...group).\n *\n * @static\n * @memberOf _\n * @since 3.8.0\n * @category Array\n * @param {Array} array The array of grouped elements to process.\n * @param {Function} [iteratee=_.identity] The function to combine\n * regrouped values.\n * @returns {Array} Returns the new array of regrouped elements.\n * @example\n *\n * var zipped = _.zip([1, 2], [10, 20], [100, 200]);\n * // => [[1, 10, 100], [2, 20, 200]]\n *\n * _.unzipWith(zipped, _.add);\n * // => [3, 30, 300]\n */\n function unzipWith(array, iteratee) {\n if (!(array && array.length)) {\n return [];\n }\n var result = unzip(array);\n if (iteratee == null) {\n return result;\n }\n return arrayMap(result, function(group) {\n return apply(iteratee, undefined, group);\n });\n }\n\n /**\n * Creates an array excluding all given values using\n * [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)\n * for equality comparisons.\n *\n * **Note:** Unlike `_.pull`, this method returns a new array.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Array\n * @param {Array} array The array to inspect.\n * @param {...*} [values] The values to exclude.\n * @returns {Array} Returns the new array of filtered values.\n * @see _.difference, _.xor\n * @example\n *\n * _.without([2, 1, 2, 3], 1, 2);\n * // => [3]\n */\n var without = baseRest(function(array, values) {\n return isArrayLikeObject(array)\n ? baseDifference(array, values)\n : [];\n });\n\n /**\n * Creates an array of unique values that is the\n * [symmetric difference](https://en.wikipedia.org/wiki/Symmetric_difference)\n * of the given arrays. The order of result values is determined by the order\n * they occur in the arrays.\n *\n * @static\n * @memberOf _\n * @since 2.4.0\n * @category Array\n * @param {...Array} [arrays] The arrays to inspect.\n * @returns {Array} Returns the new array of filtered values.\n * @see _.difference, _.without\n * @example\n *\n * _.xor([2, 1], [2, 3]);\n * // => [1, 3]\n */\n var xor = baseRest(function(arrays) {\n return baseXor(arrayFilter(arrays, isArrayLikeObject));\n });\n\n /**\n * This method is like `_.xor` except that it accepts `iteratee` which is\n * invoked for each element of each `arrays` to generate the criterion by\n * which by which they're compared. The order of result values is determined\n * by the order they occur in the arrays. The iteratee is invoked with one\n * argument: (value).\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Array\n * @param {...Array} [arrays] The arrays to inspect.\n * @param {Function} [iteratee=_.identity] The iteratee invoked per element.\n * @returns {Array} Returns the new array of filtered values.\n * @example\n *\n * _.xorBy([2.1, 1.2], [2.3, 3.4], Math.floor);\n * // => [1.2, 3.4]\n *\n * // The `_.property` iteratee shorthand.\n * _.xorBy([{ 'x': 1 }], [{ 'x': 2 }, { 'x': 1 }], 'x');\n * // => [{ 'x': 2 }]\n */\n var xorBy = baseRest(function(arrays) {\n var iteratee = last(arrays);\n if (isArrayLikeObject(iteratee)) {\n iteratee = undefined;\n }\n return baseXor(arrayFilter(arrays, isArrayLikeObject), getIteratee(iteratee, 2));\n });\n\n /**\n * This method is like `_.xor` except that it accepts `comparator` which is\n * invoked to compare elements of `arrays`. The order of result values is\n * determined by the order they occur in the arrays. The comparator is invoked\n * with two arguments: (arrVal, othVal).\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Array\n * @param {...Array} [arrays] The arrays to inspect.\n * @param {Function} [comparator] The comparator invoked per element.\n * @returns {Array} Returns the new array of filtered values.\n * @example\n *\n * var objects = [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }];\n * var others = [{ 'x': 1, 'y': 1 }, { 'x': 1, 'y': 2 }];\n *\n * _.xorWith(objects, others, _.isEqual);\n * // => [{ 'x': 2, 'y': 1 }, { 'x': 1, 'y': 1 }]\n */\n var xorWith = baseRest(function(arrays) {\n var comparator = last(arrays);\n comparator = typeof comparator == 'function' ? comparator : undefined;\n return baseXor(arrayFilter(arrays, isArrayLikeObject), undefined, comparator);\n });\n\n /**\n * Creates an array of grouped elements, the first of which contains the\n * first elements of the given arrays, the second of which contains the\n * second elements of the given arrays, and so on.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Array\n * @param {...Array} [arrays] The arrays to process.\n * @returns {Array} Returns the new array of grouped elements.\n * @example\n *\n * _.zip(['a', 'b'], [1, 2], [true, false]);\n * // => [['a', 1, true], ['b', 2, false]]\n */\n var zip = baseRest(unzip);\n\n /**\n * This method is like `_.fromPairs` except that it accepts two arrays,\n * one of property identifiers and one of corresponding values.\n *\n * @static\n * @memberOf _\n * @since 0.4.0\n * @category Array\n * @param {Array} [props=[]] The property identifiers.\n * @param {Array} [values=[]] The property values.\n * @returns {Object} Returns the new object.\n * @example\n *\n * _.zipObject(['a', 'b'], [1, 2]);\n * // => { 'a': 1, 'b': 2 }\n */\n function zipObject(props, values) {\n return baseZipObject(props || [], values || [], assignValue);\n }\n\n /**\n * This method is like `_.zipObject` except that it supports property paths.\n *\n * @static\n * @memberOf _\n * @since 4.1.0\n * @category Array\n * @param {Array} [props=[]] The property identifiers.\n * @param {Array} [values=[]] The property values.\n * @returns {Object} Returns the new object.\n * @example\n *\n * _.zipObjectDeep(['a.b[0].c', 'a.b[1].d'], [1, 2]);\n * // => { 'a': { 'b': [{ 'c': 1 }, { 'd': 2 }] } }\n */\n function zipObjectDeep(props, values) {\n return baseZipObject(props || [], values || [], baseSet);\n }\n\n /**\n * This method is like `_.zip` except that it accepts `iteratee` to specify\n * how grouped values should be combined. The iteratee is invoked with the\n * elements of each group: (...group).\n *\n * @static\n * @memberOf _\n * @since 3.8.0\n * @category Array\n * @param {...Array} [arrays] The arrays to process.\n * @param {Function} [iteratee=_.identity] The function to combine\n * grouped values.\n * @returns {Array} Returns the new array of grouped elements.\n * @example\n *\n * _.zipWith([1, 2], [10, 20], [100, 200], function(a, b, c) {\n * return a + b + c;\n * });\n * // => [111, 222]\n */\n var zipWith = baseRest(function(arrays) {\n var length = arrays.length,\n iteratee = length > 1 ? arrays[length - 1] : undefined;\n\n iteratee = typeof iteratee == 'function' ? (arrays.pop(), iteratee) : undefined;\n return unzipWith(arrays, iteratee);\n });\n\n /*------------------------------------------------------------------------*/\n\n /**\n * Creates a `lodash` wrapper instance that wraps `value` with explicit method\n * chain sequences enabled. The result of such sequences must be unwrapped\n * with `_#value`.\n *\n * @static\n * @memberOf _\n * @since 1.3.0\n * @category Seq\n * @param {*} value The value to wrap.\n * @returns {Object} Returns the new `lodash` wrapper instance.\n * @example\n *\n * var users = [\n * { 'user': 'barney', 'age': 36 },\n * { 'user': 'fred', 'age': 40 },\n * { 'user': 'pebbles', 'age': 1 }\n * ];\n *\n * var youngest = _\n * .chain(users)\n * .sortBy('age')\n * .map(function(o) {\n * return o.user + ' is ' + o.age;\n * })\n * .head()\n * .value();\n * // => 'pebbles is 1'\n */\n function chain(value) {\n var result = lodash(value);\n result.__chain__ = true;\n return result;\n }\n\n /**\n * This method invokes `interceptor` and returns `value`. The interceptor\n * is invoked with one argument; (value). The purpose of this method is to\n * \"tap into\" a method chain sequence in order to modify intermediate results.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Seq\n * @param {*} value The value to provide to `interceptor`.\n * @param {Function} interceptor The function to invoke.\n * @returns {*} Returns `value`.\n * @example\n *\n * _([1, 2, 3])\n * .tap(function(array) {\n * // Mutate input array.\n * array.pop();\n * })\n * .reverse()\n * .value();\n * // => [2, 1]\n */\n function tap(value, interceptor) {\n interceptor(value);\n return value;\n }\n\n /**\n * This method is like `_.tap` except that it returns the result of `interceptor`.\n * The purpose of this method is to \"pass thru\" values replacing intermediate\n * results in a method chain sequence.\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category Seq\n * @param {*} value The value to provide to `interceptor`.\n * @param {Function} interceptor The function to invoke.\n * @returns {*} Returns the result of `interceptor`.\n * @example\n *\n * _(' abc ')\n * .chain()\n * .trim()\n * .thru(function(value) {\n * return [value];\n * })\n * .value();\n * // => ['abc']\n */\n function thru(value, interceptor) {\n return interceptor(value);\n }\n\n /**\n * This method is the wrapper version of `_.at`.\n *\n * @name at\n * @memberOf _\n * @since 1.0.0\n * @category Seq\n * @param {...(string|string[])} [paths] The property paths to pick.\n * @returns {Object} Returns the new `lodash` wrapper instance.\n * @example\n *\n * var object = { 'a': [{ 'b': { 'c': 3 } }, 4] };\n *\n * _(object).at(['a[0].b.c', 'a[1]']).value();\n * // => [3, 4]\n */\n var wrapperAt = flatRest(function(paths) {\n var length = paths.length,\n start = length ? paths[0] : 0,\n value = this.__wrapped__,\n interceptor = function(object) { return baseAt(object, paths); };\n\n if (length > 1 || this.__actions__.length ||\n !(value instanceof LazyWrapper) || !isIndex(start)) {\n return this.thru(interceptor);\n }\n value = value.slice(start, +start + (length ? 1 : 0));\n value.__actions__.push({\n 'func': thru,\n 'args': [interceptor],\n 'thisArg': undefined\n });\n return new LodashWrapper(value, this.__chain__).thru(function(array) {\n if (length && !array.length) {\n array.push(undefined);\n }\n return array;\n });\n });\n\n /**\n * Creates a `lodash` wrapper instance with explicit method chain sequences enabled.\n *\n * @name chain\n * @memberOf _\n * @since 0.1.0\n * @category Seq\n * @returns {Object} Returns the new `lodash` wrapper instance.\n * @example\n *\n * var users = [\n * { 'user': 'barney', 'age': 36 },\n * { 'user': 'fred', 'age': 40 }\n * ];\n *\n * // A sequence without explicit chaining.\n * _(users).head();\n * // => { 'user': 'barney', 'age': 36 }\n *\n * // A sequence with explicit chaining.\n * _(users)\n * .chain()\n * .head()\n * .pick('user')\n * .value();\n * // => { 'user': 'barney' }\n */\n function wrapperChain() {\n return chain(this);\n }\n\n /**\n * Executes the chain sequence and returns the wrapped result.\n *\n * @name commit\n * @memberOf _\n * @since 3.2.0\n * @category Seq\n * @returns {Object} Returns the new `lodash` wrapper instance.\n * @example\n *\n * var array = [1, 2];\n * var wrapped = _(array).push(3);\n *\n * console.log(array);\n * // => [1, 2]\n *\n * wrapped = wrapped.commit();\n * console.log(array);\n * // => [1, 2, 3]\n *\n * wrapped.last();\n * // => 3\n *\n * console.log(array);\n * // => [1, 2, 3]\n */\n function wrapperCommit() {\n return new LodashWrapper(this.value(), this.__chain__);\n }\n\n /**\n * Gets the next value on a wrapped object following the\n * [iterator protocol](https://mdn.io/iteration_protocols#iterator).\n *\n * @name next\n * @memberOf _\n * @since 4.0.0\n * @category Seq\n * @returns {Object} Returns the next iterator value.\n * @example\n *\n * var wrapped = _([1, 2]);\n *\n * wrapped.next();\n * // => { 'done': false, 'value': 1 }\n *\n * wrapped.next();\n * // => { 'done': false, 'value': 2 }\n *\n * wrapped.next();\n * // => { 'done': true, 'value': undefined }\n */\n function wrapperNext() {\n if (this.__values__ === undefined) {\n this.__values__ = toArray(this.value());\n }\n var done = this.__index__ >= this.__values__.length,\n value = done ? undefined : this.__values__[this.__index__++];\n\n return { 'done': done, 'value': value };\n }\n\n /**\n * Enables the wrapper to be iterable.\n *\n * @name Symbol.iterator\n * @memberOf _\n * @since 4.0.0\n * @category Seq\n * @returns {Object} Returns the wrapper object.\n * @example\n *\n * var wrapped = _([1, 2]);\n *\n * wrapped[Symbol.iterator]() === wrapped;\n * // => true\n *\n * Array.from(wrapped);\n * // => [1, 2]\n */\n function wrapperToIterator() {\n return this;\n }\n\n /**\n * Creates a clone of the chain sequence planting `value` as the wrapped value.\n *\n * @name plant\n * @memberOf _\n * @since 3.2.0\n * @category Seq\n * @param {*} value The value to plant.\n * @returns {Object} Returns the new `lodash` wrapper instance.\n * @example\n *\n * function square(n) {\n * return n * n;\n * }\n *\n * var wrapped = _([1, 2]).map(square);\n * var other = wrapped.plant([3, 4]);\n *\n * other.value();\n * // => [9, 16]\n *\n * wrapped.value();\n * // => [1, 4]\n */\n function wrapperPlant(value) {\n var result,\n parent = this;\n\n while (parent instanceof baseLodash) {\n var clone = wrapperClone(parent);\n clone.__index__ = 0;\n clone.__values__ = undefined;\n if (result) {\n previous.__wrapped__ = clone;\n } else {\n result = clone;\n }\n var previous = clone;\n parent = parent.__wrapped__;\n }\n previous.__wrapped__ = value;\n return result;\n }\n\n /**\n * This method is the wrapper version of `_.reverse`.\n *\n * **Note:** This method mutates the wrapped array.\n *\n * @name reverse\n * @memberOf _\n * @since 0.1.0\n * @category Seq\n * @returns {Object} Returns the new `lodash` wrapper instance.\n * @example\n *\n * var array = [1, 2, 3];\n *\n * _(array).reverse().value()\n * // => [3, 2, 1]\n *\n * console.log(array);\n * // => [3, 2, 1]\n */\n function wrapperReverse() {\n var value = this.__wrapped__;\n if (value instanceof LazyWrapper) {\n var wrapped = value;\n if (this.__actions__.length) {\n wrapped = new LazyWrapper(this);\n }\n wrapped = wrapped.reverse();\n wrapped.__actions__.push({\n 'func': thru,\n 'args': [reverse],\n 'thisArg': undefined\n });\n return new LodashWrapper(wrapped, this.__chain__);\n }\n return this.thru(reverse);\n }\n\n /**\n * Executes the chain sequence to resolve the unwrapped value.\n *\n * @name value\n * @memberOf _\n * @since 0.1.0\n * @alias toJSON, valueOf\n * @category Seq\n * @returns {*} Returns the resolved unwrapped value.\n * @example\n *\n * _([1, 2, 3]).value();\n * // => [1, 2, 3]\n */\n function wrapperValue() {\n return baseWrapperValue(this.__wrapped__, this.__actions__);\n }\n\n /*------------------------------------------------------------------------*/\n\n /**\n * Creates an object composed of keys generated from the results of running\n * each element of `collection` thru `iteratee`. The corresponding value of\n * each key is the number of times the key was returned by `iteratee`. The\n * iteratee is invoked with one argument: (value).\n *\n * @static\n * @memberOf _\n * @since 0.5.0\n * @category Collection\n * @param {Array|Object} collection The collection to iterate over.\n * @param {Function} [iteratee=_.identity] The iteratee to transform keys.\n * @returns {Object} Returns the composed aggregate object.\n * @example\n *\n * _.countBy([6.1, 4.2, 6.3], Math.floor);\n * // => { '4': 1, '6': 2 }\n *\n * // The `_.property` iteratee shorthand.\n * _.countBy(['one', 'two', 'three'], 'length');\n * // => { '3': 2, '5': 1 }\n */\n var countBy = createAggregator(function(result, value, key) {\n if (hasOwnProperty.call(result, key)) {\n ++result[key];\n } else {\n baseAssignValue(result, key, 1);\n }\n });\n\n /**\n * Checks if `predicate` returns truthy for **all** elements of `collection`.\n * Iteration is stopped once `predicate` returns falsey. The predicate is\n * invoked with three arguments: (value, index|key, collection).\n *\n * **Note:** This method returns `true` for\n * [empty collections](https://en.wikipedia.org/wiki/Empty_set) because\n * [everything is true](https://en.wikipedia.org/wiki/Vacuous_truth) of\n * elements of empty collections.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Collection\n * @param {Array|Object} collection The collection to iterate over.\n * @param {Function} [predicate=_.identity] The function invoked per iteration.\n * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.\n * @returns {boolean} Returns `true` if all elements pass the predicate check,\n * else `false`.\n * @example\n *\n * _.every([true, 1, null, 'yes'], Boolean);\n * // => false\n *\n * var users = [\n * { 'user': 'barney', 'age': 36, 'active': false },\n * { 'user': 'fred', 'age': 40, 'active': false }\n * ];\n *\n * // The `_.matches` iteratee shorthand.\n * _.every(users, { 'user': 'barney', 'active': false });\n * // => false\n *\n * // The `_.matchesProperty` iteratee shorthand.\n * _.every(users, ['active', false]);\n * // => true\n *\n * // The `_.property` iteratee shorthand.\n * _.every(users, 'active');\n * // => false\n */\n function every(collection, predicate, guard) {\n var func = isArray(collection) ? arrayEvery : baseEvery;\n if (guard && isIterateeCall(collection, predicate, guard)) {\n predicate = undefined;\n }\n return func(collection, getIteratee(predicate, 3));\n }\n\n /**\n * Iterates over elements of `collection`, returning an array of all elements\n * `predicate` returns truthy for. The predicate is invoked with three\n * arguments: (value, index|key, collection).\n *\n * **Note:** Unlike `_.remove`, this method returns a new array.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Collection\n * @param {Array|Object} collection The collection to iterate over.\n * @param {Function} [predicate=_.identity] The function invoked per iteration.\n * @returns {Array} Returns the new filtered array.\n * @see _.reject\n * @example\n *\n * var users = [\n * { 'user': 'barney', 'age': 36, 'active': true },\n * { 'user': 'fred', 'age': 40, 'active': false }\n * ];\n *\n * _.filter(users, function(o) { return !o.active; });\n * // => objects for ['fred']\n *\n * // The `_.matches` iteratee shorthand.\n * _.filter(users, { 'age': 36, 'active': true });\n * // => objects for ['barney']\n *\n * // The `_.matchesProperty` iteratee shorthand.\n * _.filter(users, ['active', false]);\n * // => objects for ['fred']\n *\n * // The `_.property` iteratee shorthand.\n * _.filter(users, 'active');\n * // => objects for ['barney']\n *\n * // Combining several predicates using `_.overEvery` or `_.overSome`.\n * _.filter(users, _.overSome([{ 'age': 36 }, ['age', 40]]));\n * // => objects for ['fred', 'barney']\n */\n function filter(collection, predicate) {\n var func = isArray(collection) ? arrayFilter : baseFilter;\n return func(collection, getIteratee(predicate, 3));\n }\n\n /**\n * Iterates over elements of `collection`, returning the first element\n * `predicate` returns truthy for. The predicate is invoked with three\n * arguments: (value, index|key, collection).\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Collection\n * @param {Array|Object} collection The collection to inspect.\n * @param {Function} [predicate=_.identity] The function invoked per iteration.\n * @param {number} [fromIndex=0] The index to search from.\n * @returns {*} Returns the matched element, else `undefined`.\n * @example\n *\n * var users = [\n * { 'user': 'barney', 'age': 36, 'active': true },\n * { 'user': 'fred', 'age': 40, 'active': false },\n * { 'user': 'pebbles', 'age': 1, 'active': true }\n * ];\n *\n * _.find(users, function(o) { return o.age < 40; });\n * // => object for 'barney'\n *\n * // The `_.matches` iteratee shorthand.\n * _.find(users, { 'age': 1, 'active': true });\n * // => object for 'pebbles'\n *\n * // The `_.matchesProperty` iteratee shorthand.\n * _.find(users, ['active', false]);\n * // => object for 'fred'\n *\n * // The `_.property` iteratee shorthand.\n * _.find(users, 'active');\n * // => object for 'barney'\n */\n var find = createFind(findIndex);\n\n /**\n * This method is like `_.find` except that it iterates over elements of\n * `collection` from right to left.\n *\n * @static\n * @memberOf _\n * @since 2.0.0\n * @category Collection\n * @param {Array|Object} collection The collection to inspect.\n * @param {Function} [predicate=_.identity] The function invoked per iteration.\n * @param {number} [fromIndex=collection.length-1] The index to search from.\n * @returns {*} Returns the matched element, else `undefined`.\n * @example\n *\n * _.findLast([1, 2, 3, 4], function(n) {\n * return n % 2 == 1;\n * });\n * // => 3\n */\n var findLast = createFind(findLastIndex);\n\n /**\n * Creates a flattened array of values by running each element in `collection`\n * thru `iteratee` and flattening the mapped results. The iteratee is invoked\n * with three arguments: (value, index|key, collection).\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Collection\n * @param {Array|Object} collection The collection to iterate over.\n * @param {Function} [iteratee=_.identity] The function invoked per iteration.\n * @returns {Array} Returns the new flattened array.\n * @example\n *\n * function duplicate(n) {\n * return [n, n];\n * }\n *\n * _.flatMap([1, 2], duplicate);\n * // => [1, 1, 2, 2]\n */\n function flatMap(collection, iteratee) {\n return baseFlatten(map(collection, iteratee), 1);\n }\n\n /**\n * This method is like `_.flatMap` except that it recursively flattens the\n * mapped results.\n *\n * @static\n * @memberOf _\n * @since 4.7.0\n * @category Collection\n * @param {Array|Object} collection The collection to iterate over.\n * @param {Function} [iteratee=_.identity] The function invoked per iteration.\n * @returns {Array} Returns the new flattened array.\n * @example\n *\n * function duplicate(n) {\n * return [[[n, n]]];\n * }\n *\n * _.flatMapDeep([1, 2], duplicate);\n * // => [1, 1, 2, 2]\n */\n function flatMapDeep(collection, iteratee) {\n return baseFlatten(map(collection, iteratee), INFINITY);\n }\n\n /**\n * This method is like `_.flatMap` except that it recursively flattens the\n * mapped results up to `depth` times.\n *\n * @static\n * @memberOf _\n * @since 4.7.0\n * @category Collection\n * @param {Array|Object} collection The collection to iterate over.\n * @param {Function} [iteratee=_.identity] The function invoked per iteration.\n * @param {number} [depth=1] The maximum recursion depth.\n * @returns {Array} Returns the new flattened array.\n * @example\n *\n * function duplicate(n) {\n * return [[[n, n]]];\n * }\n *\n * _.flatMapDepth([1, 2], duplicate, 2);\n * // => [[1, 1], [2, 2]]\n */\n function flatMapDepth(collection, iteratee, depth) {\n depth = depth === undefined ? 1 : toInteger(depth);\n return baseFlatten(map(collection, iteratee), depth);\n }\n\n /**\n * Iterates over elements of `collection` and invokes `iteratee` for each element.\n * The iteratee is invoked with three arguments: (value, index|key, collection).\n * Iteratee functions may exit iteration early by explicitly returning `false`.\n *\n * **Note:** As with other \"Collections\" methods, objects with a \"length\"\n * property are iterated like arrays. To avoid this behavior use `_.forIn`\n * or `_.forOwn` for object iteration.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @alias each\n * @category Collection\n * @param {Array|Object} collection The collection to iterate over.\n * @param {Function} [iteratee=_.identity] The function invoked per iteration.\n * @returns {Array|Object} Returns `collection`.\n * @see _.forEachRight\n * @example\n *\n * _.forEach([1, 2], function(value) {\n * console.log(value);\n * });\n * // => Logs `1` then `2`.\n *\n * _.forEach({ 'a': 1, 'b': 2 }, function(value, key) {\n * console.log(key);\n * });\n * // => Logs 'a' then 'b' (iteration order is not guaranteed).\n */\n function forEach(collection, iteratee) {\n var func = isArray(collection) ? arrayEach : baseEach;\n return func(collection, getIteratee(iteratee, 3));\n }\n\n /**\n * This method is like `_.forEach` except that it iterates over elements of\n * `collection` from right to left.\n *\n * @static\n * @memberOf _\n * @since 2.0.0\n * @alias eachRight\n * @category Collection\n * @param {Array|Object} collection The collection to iterate over.\n * @param {Function} [iteratee=_.identity] The function invoked per iteration.\n * @returns {Array|Object} Returns `collection`.\n * @see _.forEach\n * @example\n *\n * _.forEachRight([1, 2], function(value) {\n * console.log(value);\n * });\n * // => Logs `2` then `1`.\n */\n function forEachRight(collection, iteratee) {\n var func = isArray(collection) ? arrayEachRight : baseEachRight;\n return func(collection, getIteratee(iteratee, 3));\n }\n\n /**\n * Creates an object composed of keys generated from the results of running\n * each element of `collection` thru `iteratee`. The order of grouped values\n * is determined by the order they occur in `collection`. The corresponding\n * value of each key is an array of elements responsible for generating the\n * key. The iteratee is invoked with one argument: (value).\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Collection\n * @param {Array|Object} collection The collection to iterate over.\n * @param {Function} [iteratee=_.identity] The iteratee to transform keys.\n * @returns {Object} Returns the composed aggregate object.\n * @example\n *\n * _.groupBy([6.1, 4.2, 6.3], Math.floor);\n * // => { '4': [4.2], '6': [6.1, 6.3] }\n *\n * // The `_.property` iteratee shorthand.\n * _.groupBy(['one', 'two', 'three'], 'length');\n * // => { '3': ['one', 'two'], '5': ['three'] }\n */\n var groupBy = createAggregator(function(result, value, key) {\n if (hasOwnProperty.call(result, key)) {\n result[key].push(value);\n } else {\n baseAssignValue(result, key, [value]);\n }\n });\n\n /**\n * Checks if `value` is in `collection`. If `collection` is a string, it's\n * checked for a substring of `value`, otherwise\n * [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)\n * is used for equality comparisons. If `fromIndex` is negative, it's used as\n * the offset from the end of `collection`.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Collection\n * @param {Array|Object|string} collection The collection to inspect.\n * @param {*} value The value to search for.\n * @param {number} [fromIndex=0] The index to search from.\n * @param- {Object} [guard] Enables use as an iteratee for methods like `_.reduce`.\n * @returns {boolean} Returns `true` if `value` is found, else `false`.\n * @example\n *\n * _.includes([1, 2, 3], 1);\n * // => true\n *\n * _.includes([1, 2, 3], 1, 2);\n * // => false\n *\n * _.includes({ 'a': 1, 'b': 2 }, 1);\n * // => true\n *\n * _.includes('abcd', 'bc');\n * // => true\n */\n function includes(collection, value, fromIndex, guard) {\n collection = isArrayLike(collection) ? collection : values(collection);\n fromIndex = (fromIndex && !guard) ? toInteger(fromIndex) : 0;\n\n var length = collection.length;\n if (fromIndex < 0) {\n fromIndex = nativeMax(length + fromIndex, 0);\n }\n return isString(collection)\n ? (fromIndex <= length && collection.indexOf(value, fromIndex) > -1)\n : (!!length && baseIndexOf(collection, value, fromIndex) > -1);\n }\n\n /**\n * Invokes the method at `path` of each element in `collection`, returning\n * an array of the results of each invoked method. Any additional arguments\n * are provided to each invoked method. If `path` is a function, it's invoked\n * for, and `this` bound to, each element in `collection`.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Collection\n * @param {Array|Object} collection The collection to iterate over.\n * @param {Array|Function|string} path The path of the method to invoke or\n * the function invoked per iteration.\n * @param {...*} [args] The arguments to invoke each method with.\n * @returns {Array} Returns the array of results.\n * @example\n *\n * _.invokeMap([[5, 1, 7], [3, 2, 1]], 'sort');\n * // => [[1, 5, 7], [1, 2, 3]]\n *\n * _.invokeMap([123, 456], String.prototype.split, '');\n * // => [['1', '2', '3'], ['4', '5', '6']]\n */\n var invokeMap = baseRest(function(collection, path, args) {\n var index = -1,\n isFunc = typeof path == 'function',\n result = isArrayLike(collection) ? Array(collection.length) : [];\n\n baseEach(collection, function(value) {\n result[++index] = isFunc ? apply(path, value, args) : baseInvoke(value, path, args);\n });\n return result;\n });\n\n /**\n * Creates an object composed of keys generated from the results of running\n * each element of `collection` thru `iteratee`. The corresponding value of\n * each key is the last element responsible for generating the key. The\n * iteratee is invoked with one argument: (value).\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Collection\n * @param {Array|Object} collection The collection to iterate over.\n * @param {Function} [iteratee=_.identity] The iteratee to transform keys.\n * @returns {Object} Returns the composed aggregate object.\n * @example\n *\n * var array = [\n * { 'dir': 'left', 'code': 97 },\n * { 'dir': 'right', 'code': 100 }\n * ];\n *\n * _.keyBy(array, function(o) {\n * return String.fromCharCode(o.code);\n * });\n * // => { 'a': { 'dir': 'left', 'code': 97 }, 'd': { 'dir': 'right', 'code': 100 } }\n *\n * _.keyBy(array, 'dir');\n * // => { 'left': { 'dir': 'left', 'code': 97 }, 'right': { 'dir': 'right', 'code': 100 } }\n */\n var keyBy = createAggregator(function(result, value, key) {\n baseAssignValue(result, key, value);\n });\n\n /**\n * Creates an array of values by running each element in `collection` thru\n * `iteratee`. The iteratee is invoked with three arguments:\n * (value, index|key, collection).\n *\n * Many lodash methods are guarded to work as iteratees for methods like\n * `_.every`, `_.filter`, `_.map`, `_.mapValues`, `_.reject`, and `_.some`.\n *\n * The guarded methods are:\n * `ary`, `chunk`, `curry`, `curryRight`, `drop`, `dropRight`, `every`,\n * `fill`, `invert`, `parseInt`, `random`, `range`, `rangeRight`, `repeat`,\n * `sampleSize`, `slice`, `some`, `sortBy`, `split`, `take`, `takeRight`,\n * `template`, `trim`, `trimEnd`, `trimStart`, and `words`\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Collection\n * @param {Array|Object} collection The collection to iterate over.\n * @param {Function} [iteratee=_.identity] The function invoked per iteration.\n * @returns {Array} Returns the new mapped array.\n * @example\n *\n * function square(n) {\n * return n * n;\n * }\n *\n * _.map([4, 8], square);\n * // => [16, 64]\n *\n * _.map({ 'a': 4, 'b': 8 }, square);\n * // => [16, 64] (iteration order is not guaranteed)\n *\n * var users = [\n * { 'user': 'barney' },\n * { 'user': 'fred' }\n * ];\n *\n * // The `_.property` iteratee shorthand.\n * _.map(users, 'user');\n * // => ['barney', 'fred']\n */\n function map(collection, iteratee) {\n var func = isArray(collection) ? arrayMap : baseMap;\n return func(collection, getIteratee(iteratee, 3));\n }\n\n /**\n * This method is like `_.sortBy` except that it allows specifying the sort\n * orders of the iteratees to sort by. If `orders` is unspecified, all values\n * are sorted in ascending order. Otherwise, specify an order of \"desc\" for\n * descending or \"asc\" for ascending sort order of corresponding values.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Collection\n * @param {Array|Object} collection The collection to iterate over.\n * @param {Array[]|Function[]|Object[]|string[]} [iteratees=[_.identity]]\n * The iteratees to sort by.\n * @param {string[]} [orders] The sort orders of `iteratees`.\n * @param- {Object} [guard] Enables use as an iteratee for methods like `_.reduce`.\n * @returns {Array} Returns the new sorted array.\n * @example\n *\n * var users = [\n * { 'user': 'fred', 'age': 48 },\n * { 'user': 'barney', 'age': 34 },\n * { 'user': 'fred', 'age': 40 },\n * { 'user': 'barney', 'age': 36 }\n * ];\n *\n * // Sort by `user` in ascending order and by `age` in descending order.\n * _.orderBy(users, ['user', 'age'], ['asc', 'desc']);\n * // => objects for [['barney', 36], ['barney', 34], ['fred', 48], ['fred', 40]]\n */\n function orderBy(collection, iteratees, orders, guard) {\n if (collection == null) {\n return [];\n }\n if (!isArray(iteratees)) {\n iteratees = iteratees == null ? [] : [iteratees];\n }\n orders = guard ? undefined : orders;\n if (!isArray(orders)) {\n orders = orders == null ? [] : [orders];\n }\n return baseOrderBy(collection, iteratees, orders);\n }\n\n /**\n * Creates an array of elements split into two groups, the first of which\n * contains elements `predicate` returns truthy for, the second of which\n * contains elements `predicate` returns falsey for. The predicate is\n * invoked with one argument: (value).\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category Collection\n * @param {Array|Object} collection The collection to iterate over.\n * @param {Function} [predicate=_.identity] The function invoked per iteration.\n * @returns {Array} Returns the array of grouped elements.\n * @example\n *\n * var users = [\n * { 'user': 'barney', 'age': 36, 'active': false },\n * { 'user': 'fred', 'age': 40, 'active': true },\n * { 'user': 'pebbles', 'age': 1, 'active': false }\n * ];\n *\n * _.partition(users, function(o) { return o.active; });\n * // => objects for [['fred'], ['barney', 'pebbles']]\n *\n * // The `_.matches` iteratee shorthand.\n * _.partition(users, { 'age': 1, 'active': false });\n * // => objects for [['pebbles'], ['barney', 'fred']]\n *\n * // The `_.matchesProperty` iteratee shorthand.\n * _.partition(users, ['active', false]);\n * // => objects for [['barney', 'pebbles'], ['fred']]\n *\n * // The `_.property` iteratee shorthand.\n * _.partition(users, 'active');\n * // => objects for [['fred'], ['barney', 'pebbles']]\n */\n var partition = createAggregator(function(result, value, key) {\n result[key ? 0 : 1].push(value);\n }, function() { return [[], []]; });\n\n /**\n * Reduces `collection` to a value which is the accumulated result of running\n * each element in `collection` thru `iteratee`, where each successive\n * invocation is supplied the return value of the previous. If `accumulator`\n * is not given, the first element of `collection` is used as the initial\n * value. The iteratee is invoked with four arguments:\n * (accumulator, value, index|key, collection).\n *\n * Many lodash methods are guarded to work as iteratees for methods like\n * `_.reduce`, `_.reduceRight`, and `_.transform`.\n *\n * The guarded methods are:\n * `assign`, `defaults`, `defaultsDeep`, `includes`, `merge`, `orderBy`,\n * and `sortBy`\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Collection\n * @param {Array|Object} collection The collection to iterate over.\n * @param {Function} [iteratee=_.identity] The function invoked per iteration.\n * @param {*} [accumulator] The initial value.\n * @returns {*} Returns the accumulated value.\n * @see _.reduceRight\n * @example\n *\n * _.reduce([1, 2], function(sum, n) {\n * return sum + n;\n * }, 0);\n * // => 3\n *\n * _.reduce({ 'a': 1, 'b': 2, 'c': 1 }, function(result, value, key) {\n * (result[value] || (result[value] = [])).push(key);\n * return result;\n * }, {});\n * // => { '1': ['a', 'c'], '2': ['b'] } (iteration order is not guaranteed)\n */\n function reduce(collection, iteratee, accumulator) {\n var func = isArray(collection) ? arrayReduce : baseReduce,\n initAccum = arguments.length < 3;\n\n return func(collection, getIteratee(iteratee, 4), accumulator, initAccum, baseEach);\n }\n\n /**\n * This method is like `_.reduce` except that it iterates over elements of\n * `collection` from right to left.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Collection\n * @param {Array|Object} collection The collection to iterate over.\n * @param {Function} [iteratee=_.identity] The function invoked per iteration.\n * @param {*} [accumulator] The initial value.\n * @returns {*} Returns the accumulated value.\n * @see _.reduce\n * @example\n *\n * var array = [[0, 1], [2, 3], [4, 5]];\n *\n * _.reduceRight(array, function(flattened, other) {\n * return flattened.concat(other);\n * }, []);\n * // => [4, 5, 2, 3, 0, 1]\n */\n function reduceRight(collection, iteratee, accumulator) {\n var func = isArray(collection) ? arrayReduceRight : baseReduce,\n initAccum = arguments.length < 3;\n\n return func(collection, getIteratee(iteratee, 4), accumulator, initAccum, baseEachRight);\n }\n\n /**\n * The opposite of `_.filter`; this method returns the elements of `collection`\n * that `predicate` does **not** return truthy for.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Collection\n * @param {Array|Object} collection The collection to iterate over.\n * @param {Function} [predicate=_.identity] The function invoked per iteration.\n * @returns {Array} Returns the new filtered array.\n * @see _.filter\n * @example\n *\n * var users = [\n * { 'user': 'barney', 'age': 36, 'active': false },\n * { 'user': 'fred', 'age': 40, 'active': true }\n * ];\n *\n * _.reject(users, function(o) { return !o.active; });\n * // => objects for ['fred']\n *\n * // The `_.matches` iteratee shorthand.\n * _.reject(users, { 'age': 40, 'active': true });\n * // => objects for ['barney']\n *\n * // The `_.matchesProperty` iteratee shorthand.\n * _.reject(users, ['active', false]);\n * // => objects for ['fred']\n *\n * // The `_.property` iteratee shorthand.\n * _.reject(users, 'active');\n * // => objects for ['barney']\n */\n function reject(collection, predicate) {\n var func = isArray(collection) ? arrayFilter : baseFilter;\n return func(collection, negate(getIteratee(predicate, 3)));\n }\n\n /**\n * Gets a random element from `collection`.\n *\n * @static\n * @memberOf _\n * @since 2.0.0\n * @category Collection\n * @param {Array|Object} collection The collection to sample.\n * @returns {*} Returns the random element.\n * @example\n *\n * _.sample([1, 2, 3, 4]);\n * // => 2\n */\n function sample(collection) {\n var func = isArray(collection) ? arraySample : baseSample;\n return func(collection);\n }\n\n /**\n * Gets `n` random elements at unique keys from `collection` up to the\n * size of `collection`.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Collection\n * @param {Array|Object} collection The collection to sample.\n * @param {number} [n=1] The number of elements to sample.\n * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.\n * @returns {Array} Returns the random elements.\n * @example\n *\n * _.sampleSize([1, 2, 3], 2);\n * // => [3, 1]\n *\n * _.sampleSize([1, 2, 3], 4);\n * // => [2, 3, 1]\n */\n function sampleSize(collection, n, guard) {\n if ((guard ? isIterateeCall(collection, n, guard) : n === undefined)) {\n n = 1;\n } else {\n n = toInteger(n);\n }\n var func = isArray(collection) ? arraySampleSize : baseSampleSize;\n return func(collection, n);\n }\n\n /**\n * Creates an array of shuffled values, using a version of the\n * [Fisher-Yates shuffle](https://en.wikipedia.org/wiki/Fisher-Yates_shuffle).\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Collection\n * @param {Array|Object} collection The collection to shuffle.\n * @returns {Array} Returns the new shuffled array.\n * @example\n *\n * _.shuffle([1, 2, 3, 4]);\n * // => [4, 1, 3, 2]\n */\n function shuffle(collection) {\n var func = isArray(collection) ? arrayShuffle : baseShuffle;\n return func(collection);\n }\n\n /**\n * Gets the size of `collection` by returning its length for array-like\n * values or the number of own enumerable string keyed properties for objects.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Collection\n * @param {Array|Object|string} collection The collection to inspect.\n * @returns {number} Returns the collection size.\n * @example\n *\n * _.size([1, 2, 3]);\n * // => 3\n *\n * _.size({ 'a': 1, 'b': 2 });\n * // => 2\n *\n * _.size('pebbles');\n * // => 7\n */\n function size(collection) {\n if (collection == null) {\n return 0;\n }\n if (isArrayLike(collection)) {\n return isString(collection) ? stringSize(collection) : collection.length;\n }\n var tag = getTag(collection);\n if (tag == mapTag || tag == setTag) {\n return collection.size;\n }\n return baseKeys(collection).length;\n }\n\n /**\n * Checks if `predicate` returns truthy for **any** element of `collection`.\n * Iteration is stopped once `predicate` returns truthy. The predicate is\n * invoked with three arguments: (value, index|key, collection).\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Collection\n * @param {Array|Object} collection The collection to iterate over.\n * @param {Function} [predicate=_.identity] The function invoked per iteration.\n * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.\n * @returns {boolean} Returns `true` if any element passes the predicate check,\n * else `false`.\n * @example\n *\n * _.some([null, 0, 'yes', false], Boolean);\n * // => true\n *\n * var users = [\n * { 'user': 'barney', 'active': true },\n * { 'user': 'fred', 'active': false }\n * ];\n *\n * // The `_.matches` iteratee shorthand.\n * _.some(users, { 'user': 'barney', 'active': false });\n * // => false\n *\n * // The `_.matchesProperty` iteratee shorthand.\n * _.some(users, ['active', false]);\n * // => true\n *\n * // The `_.property` iteratee shorthand.\n * _.some(users, 'active');\n * // => true\n */\n function some(collection, predicate, guard) {\n var func = isArray(collection) ? arraySome : baseSome;\n if (guard && isIterateeCall(collection, predicate, guard)) {\n predicate = undefined;\n }\n return func(collection, getIteratee(predicate, 3));\n }\n\n /**\n * Creates an array of elements, sorted in ascending order by the results of\n * running each element in a collection thru each iteratee. This method\n * performs a stable sort, that is, it preserves the original sort order of\n * equal elements. The iteratees are invoked with one argument: (value).\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Collection\n * @param {Array|Object} collection The collection to iterate over.\n * @param {...(Function|Function[])} [iteratees=[_.identity]]\n * The iteratees to sort by.\n * @returns {Array} Returns the new sorted array.\n * @example\n *\n * var users = [\n * { 'user': 'fred', 'age': 48 },\n * { 'user': 'barney', 'age': 36 },\n * { 'user': 'fred', 'age': 30 },\n * { 'user': 'barney', 'age': 34 }\n * ];\n *\n * _.sortBy(users, [function(o) { return o.user; }]);\n * // => objects for [['barney', 36], ['barney', 34], ['fred', 48], ['fred', 30]]\n *\n * _.sortBy(users, ['user', 'age']);\n * // => objects for [['barney', 34], ['barney', 36], ['fred', 30], ['fred', 48]]\n */\n var sortBy = baseRest(function(collection, iteratees) {\n if (collection == null) {\n return [];\n }\n var length = iteratees.length;\n if (length > 1 && isIterateeCall(collection, iteratees[0], iteratees[1])) {\n iteratees = [];\n } else if (length > 2 && isIterateeCall(iteratees[0], iteratees[1], iteratees[2])) {\n iteratees = [iteratees[0]];\n }\n return baseOrderBy(collection, baseFlatten(iteratees, 1), []);\n });\n\n /*------------------------------------------------------------------------*/\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 */\n var now = ctxNow || function() {\n return root.Date.now();\n };\n\n /*------------------------------------------------------------------------*/\n\n /**\n * The opposite of `_.before`; this method creates a function that invokes\n * `func` once it's called `n` or more times.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Function\n * @param {number} n The number of calls before `func` is invoked.\n * @param {Function} func The function to restrict.\n * @returns {Function} Returns the new restricted function.\n * @example\n *\n * var saves = ['profile', 'settings'];\n *\n * var done = _.after(saves.length, function() {\n * console.log('done saving!');\n * });\n *\n * _.forEach(saves, function(type) {\n * asyncSave({ 'type': type, 'complete': done });\n * });\n * // => Logs 'done saving!' after the two async saves have completed.\n */\n function after(n, func) {\n if (typeof func != 'function') {\n throw new TypeError(FUNC_ERROR_TEXT);\n }\n n = toInteger(n);\n return function() {\n if (--n < 1) {\n return func.apply(this, arguments);\n }\n };\n }\n\n /**\n * Creates a function that invokes `func`, with up to `n` arguments,\n * ignoring any additional arguments.\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category Function\n * @param {Function} func The function to cap arguments for.\n * @param {number} [n=func.length] The arity cap.\n * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.\n * @returns {Function} Returns the new capped function.\n * @example\n *\n * _.map(['6', '8', '10'], _.ary(parseInt, 1));\n * // => [6, 8, 10]\n */\n function ary(func, n, guard) {\n n = guard ? undefined : n;\n n = (func && n == null) ? func.length : n;\n return createWrap(func, WRAP_ARY_FLAG, undefined, undefined, undefined, undefined, n);\n }\n\n /**\n * Creates a function that invokes `func`, with the `this` binding and arguments\n * of the created function, while it's called less than `n` times. Subsequent\n * calls to the created function return the result of the last `func` invocation.\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category Function\n * @param {number} n The number of calls at which `func` is no longer invoked.\n * @param {Function} func The function to restrict.\n * @returns {Function} Returns the new restricted function.\n * @example\n *\n * jQuery(element).on('click', _.before(5, addContactToList));\n * // => Allows adding up to 4 contacts to the list.\n */\n function before(n, func) {\n var result;\n if (typeof func != 'function') {\n throw new TypeError(FUNC_ERROR_TEXT);\n }\n n = toInteger(n);\n return function() {\n if (--n > 0) {\n result = func.apply(this, arguments);\n }\n if (n <= 1) {\n func = undefined;\n }\n return result;\n };\n }\n\n /**\n * Creates a function that invokes `func` with the `this` binding of `thisArg`\n * and `partials` prepended to the arguments it receives.\n *\n * The `_.bind.placeholder` value, which defaults to `_` in monolithic builds,\n * may be used as a placeholder for partially applied arguments.\n *\n * **Note:** Unlike native `Function#bind`, this method doesn't set the \"length\"\n * property of bound functions.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Function\n * @param {Function} func The function to bind.\n * @param {*} thisArg The `this` binding of `func`.\n * @param {...*} [partials] The arguments to be partially applied.\n * @returns {Function} Returns the new bound function.\n * @example\n *\n * function greet(greeting, punctuation) {\n * return greeting + ' ' + this.user + punctuation;\n * }\n *\n * var object = { 'user': 'fred' };\n *\n * var bound = _.bind(greet, object, 'hi');\n * bound('!');\n * // => 'hi fred!'\n *\n * // Bound with placeholders.\n * var bound = _.bind(greet, object, _, '!');\n * bound('hi');\n * // => 'hi fred!'\n */\n var bind = baseRest(function(func, thisArg, partials) {\n var bitmask = WRAP_BIND_FLAG;\n if (partials.length) {\n var holders = replaceHolders(partials, getHolder(bind));\n bitmask |= WRAP_PARTIAL_FLAG;\n }\n return createWrap(func, bitmask, thisArg, partials, holders);\n });\n\n /**\n * Creates a function that invokes the method at `object[key]` with `partials`\n * prepended to the arguments it receives.\n *\n * This method differs from `_.bind` by allowing bound functions to reference\n * methods that may be redefined or don't yet exist. See\n * [Peter Michaux's article](http://peter.michaux.ca/articles/lazy-function-definition-pattern)\n * for more details.\n *\n * The `_.bindKey.placeholder` value, which defaults to `_` in monolithic\n * builds, may be used as a placeholder for partially applied arguments.\n *\n * @static\n * @memberOf _\n * @since 0.10.0\n * @category Function\n * @param {Object} object The object to invoke the method on.\n * @param {string} key The key of the method.\n * @param {...*} [partials] The arguments to be partially applied.\n * @returns {Function} Returns the new bound function.\n * @example\n *\n * var object = {\n * 'user': 'fred',\n * 'greet': function(greeting, punctuation) {\n * return greeting + ' ' + this.user + punctuation;\n * }\n * };\n *\n * var bound = _.bindKey(object, 'greet', 'hi');\n * bound('!');\n * // => 'hi fred!'\n *\n * object.greet = function(greeting, punctuation) {\n * return greeting + 'ya ' + this.user + punctuation;\n * };\n *\n * bound('!');\n * // => 'hiya fred!'\n *\n * // Bound with placeholders.\n * var bound = _.bindKey(object, 'greet', _, '!');\n * bound('hi');\n * // => 'hiya fred!'\n */\n var bindKey = baseRest(function(object, key, partials) {\n var bitmask = WRAP_BIND_FLAG | WRAP_BIND_KEY_FLAG;\n if (partials.length) {\n var holders = replaceHolders(partials, getHolder(bindKey));\n bitmask |= WRAP_PARTIAL_FLAG;\n }\n return createWrap(key, bitmask, object, partials, holders);\n });\n\n /**\n * Creates a function that accepts arguments of `func` and either invokes\n * `func` returning its result, if at least `arity` number of arguments have\n * been provided, or returns a function that accepts the remaining `func`\n * arguments, and so on. The arity of `func` may be specified if `func.length`\n * is not sufficient.\n *\n * The `_.curry.placeholder` value, which defaults to `_` in monolithic builds,\n * may be used as a placeholder for provided arguments.\n *\n * **Note:** This method doesn't set the \"length\" property of curried functions.\n *\n * @static\n * @memberOf _\n * @since 2.0.0\n * @category Function\n * @param {Function} func The function to curry.\n * @param {number} [arity=func.length] The arity of `func`.\n * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.\n * @returns {Function} Returns the new curried function.\n * @example\n *\n * var abc = function(a, b, c) {\n * return [a, b, c];\n * };\n *\n * var curried = _.curry(abc);\n *\n * curried(1)(2)(3);\n * // => [1, 2, 3]\n *\n * curried(1, 2)(3);\n * // => [1, 2, 3]\n *\n * curried(1, 2, 3);\n * // => [1, 2, 3]\n *\n * // Curried with placeholders.\n * curried(1)(_, 3)(2);\n * // => [1, 2, 3]\n */\n function curry(func, arity, guard) {\n arity = guard ? undefined : arity;\n var result = createWrap(func, WRAP_CURRY_FLAG, undefined, undefined, undefined, undefined, undefined, arity);\n result.placeholder = curry.placeholder;\n return result;\n }\n\n /**\n * This method is like `_.curry` except that arguments are applied to `func`\n * in the manner of `_.partialRight` instead of `_.partial`.\n *\n * The `_.curryRight.placeholder` value, which defaults to `_` in monolithic\n * builds, may be used as a placeholder for provided arguments.\n *\n * **Note:** This method doesn't set the \"length\" property of curried functions.\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category Function\n * @param {Function} func The function to curry.\n * @param {number} [arity=func.length] The arity of `func`.\n * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.\n * @returns {Function} Returns the new curried function.\n * @example\n *\n * var abc = function(a, b, c) {\n * return [a, b, c];\n * };\n *\n * var curried = _.curryRight(abc);\n *\n * curried(3)(2)(1);\n * // => [1, 2, 3]\n *\n * curried(2, 3)(1);\n * // => [1, 2, 3]\n *\n * curried(1, 2, 3);\n * // => [1, 2, 3]\n *\n * // Curried with placeholders.\n * curried(3)(1, _)(2);\n * // => [1, 2, 3]\n */\n function curryRight(func, arity, guard) {\n arity = guard ? undefined : arity;\n var result = createWrap(func, WRAP_CURRY_RIGHT_FLAG, undefined, undefined, undefined, undefined, undefined, arity);\n result.placeholder = curryRight.placeholder;\n return result;\n }\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 */\n function 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\n /**\n * Defers invoking the `func` until the current call stack has cleared. Any\n * additional arguments are provided to `func` when it's invoked.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Function\n * @param {Function} func The function to defer.\n * @param {...*} [args] The arguments to invoke `func` with.\n * @returns {number} Returns the timer id.\n * @example\n *\n * _.defer(function(text) {\n * console.log(text);\n * }, 'deferred');\n * // => Logs 'deferred' after one millisecond.\n */\n var defer = baseRest(function(func, args) {\n return baseDelay(func, 1, args);\n });\n\n /**\n * Invokes `func` after `wait` milliseconds. Any additional arguments are\n * provided to `func` when it's invoked.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Function\n * @param {Function} func The function to delay.\n * @param {number} wait The number of milliseconds to delay invocation.\n * @param {...*} [args] The arguments to invoke `func` with.\n * @returns {number} Returns the timer id.\n * @example\n *\n * _.delay(function(text) {\n * console.log(text);\n * }, 1000, 'later');\n * // => Logs 'later' after one second.\n */\n var delay = baseRest(function(func, wait, args) {\n return baseDelay(func, toNumber(wait) || 0, args);\n });\n\n /**\n * Creates a function that invokes `func` with arguments reversed.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Function\n * @param {Function} func The function to flip arguments for.\n * @returns {Function} Returns the new flipped function.\n * @example\n *\n * var flipped = _.flip(function() {\n * return _.toArray(arguments);\n * });\n *\n * flipped('a', 'b', 'c', 'd');\n * // => ['d', 'c', 'b', 'a']\n */\n function flip(func) {\n return createWrap(func, WRAP_FLIP_FLAG);\n }\n\n /**\n * Creates a function that memoizes the result of `func`. If `resolver` is\n * provided, it determines the cache key for storing the result based on the\n * arguments provided to the memoized function. By default, the first argument\n * provided to the memoized function is used as the map cache key. The `func`\n * is invoked with the `this` binding of the memoized function.\n *\n * **Note:** The cache is exposed as the `cache` property on the memoized\n * function. Its creation may be customized by replacing the `_.memoize.Cache`\n * constructor with one whose instances implement the\n * [`Map`](http://ecma-international.org/ecma-262/7.0/#sec-properties-of-the-map-prototype-object)\n * method interface of `clear`, `delete`, `get`, `has`, and `set`.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Function\n * @param {Function} func The function to have its output memoized.\n * @param {Function} [resolver] The function to resolve the cache key.\n * @returns {Function} Returns the new memoized function.\n * @example\n *\n * var object = { 'a': 1, 'b': 2 };\n * var other = { 'c': 3, 'd': 4 };\n *\n * var values = _.memoize(_.values);\n * values(object);\n * // => [1, 2]\n *\n * values(other);\n * // => [3, 4]\n *\n * object.a = 2;\n * values(object);\n * // => [1, 2]\n *\n * // Modify the result cache.\n * values.cache.set(object, ['a', 'b']);\n * values(object);\n * // => ['a', 'b']\n *\n * // Replace `_.memoize.Cache`.\n * _.memoize.Cache = WeakMap;\n */\n function memoize(func, resolver) {\n if (typeof func != 'function' || (resolver != null && typeof resolver != 'function')) {\n throw new TypeError(FUNC_ERROR_TEXT);\n }\n var memoized = function() {\n var args = arguments,\n key = resolver ? resolver.apply(this, args) : args[0],\n cache = memoized.cache;\n\n if (cache.has(key)) {\n return cache.get(key);\n }\n var result = func.apply(this, args);\n memoized.cache = cache.set(key, result) || cache;\n return result;\n };\n memoized.cache = new (memoize.Cache || MapCache);\n return memoized;\n }\n\n // Expose `MapCache`.\n memoize.Cache = MapCache;\n\n /**\n * Creates a function that negates the result of the predicate `func`. The\n * `func` predicate is invoked with the `this` binding and arguments of the\n * created function.\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category Function\n * @param {Function} predicate The predicate to negate.\n * @returns {Function} Returns the new negated function.\n * @example\n *\n * function isEven(n) {\n * return n % 2 == 0;\n * }\n *\n * _.filter([1, 2, 3, 4, 5, 6], _.negate(isEven));\n * // => [1, 3, 5]\n */\n function negate(predicate) {\n if (typeof predicate != 'function') {\n throw new TypeError(FUNC_ERROR_TEXT);\n }\n return function() {\n var args = arguments;\n switch (args.length) {\n case 0: return !predicate.call(this);\n case 1: return !predicate.call(this, args[0]);\n case 2: return !predicate.call(this, args[0], args[1]);\n case 3: return !predicate.call(this, args[0], args[1], args[2]);\n }\n return !predicate.apply(this, args);\n };\n }\n\n /**\n * Creates a function that is restricted to invoking `func` once. Repeat calls\n * to the function return the value of the first invocation. The `func` is\n * invoked with the `this` binding and arguments of the created function.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Function\n * @param {Function} func The function to restrict.\n * @returns {Function} Returns the new restricted function.\n * @example\n *\n * var initialize = _.once(createApplication);\n * initialize();\n * initialize();\n * // => `createApplication` is invoked once\n */\n function once(func) {\n return before(2, func);\n }\n\n /**\n * Creates a function that invokes `func` with its arguments transformed.\n *\n * @static\n * @since 4.0.0\n * @memberOf _\n * @category Function\n * @param {Function} func The function to wrap.\n * @param {...(Function|Function[])} [transforms=[_.identity]]\n * The argument transforms.\n * @returns {Function} Returns the new function.\n * @example\n *\n * function doubled(n) {\n * return n * 2;\n * }\n *\n * function square(n) {\n * return n * n;\n * }\n *\n * var func = _.overArgs(function(x, y) {\n * return [x, y];\n * }, [square, doubled]);\n *\n * func(9, 3);\n * // => [81, 6]\n *\n * func(10, 5);\n * // => [100, 10]\n */\n var overArgs = castRest(function(func, transforms) {\n transforms = (transforms.length == 1 && isArray(transforms[0]))\n ? arrayMap(transforms[0], baseUnary(getIteratee()))\n : arrayMap(baseFlatten(transforms, 1), baseUnary(getIteratee()));\n\n var funcsLength = transforms.length;\n return baseRest(function(args) {\n var index = -1,\n length = nativeMin(args.length, funcsLength);\n\n while (++index < length) {\n args[index] = transforms[index].call(this, args[index]);\n }\n return apply(func, this, args);\n });\n });\n\n /**\n * Creates a function that invokes `func` with `partials` prepended to the\n * arguments it receives. This method is like `_.bind` except it does **not**\n * alter the `this` binding.\n *\n * The `_.partial.placeholder` value, which defaults to `_` in monolithic\n * builds, may be used as a placeholder for partially applied arguments.\n *\n * **Note:** This method doesn't set the \"length\" property of partially\n * applied functions.\n *\n * @static\n * @memberOf _\n * @since 0.2.0\n * @category Function\n * @param {Function} func The function to partially apply arguments to.\n * @param {...*} [partials] The arguments to be partially applied.\n * @returns {Function} Returns the new partially applied function.\n * @example\n *\n * function greet(greeting, name) {\n * return greeting + ' ' + name;\n * }\n *\n * var sayHelloTo = _.partial(greet, 'hello');\n * sayHelloTo('fred');\n * // => 'hello fred'\n *\n * // Partially applied with placeholders.\n * var greetFred = _.partial(greet, _, 'fred');\n * greetFred('hi');\n * // => 'hi fred'\n */\n var partial = baseRest(function(func, partials) {\n var holders = replaceHolders(partials, getHolder(partial));\n return createWrap(func, WRAP_PARTIAL_FLAG, undefined, partials, holders);\n });\n\n /**\n * This method is like `_.partial` except that partially applied arguments\n * are appended to the arguments it receives.\n *\n * The `_.partialRight.placeholder` value, which defaults to `_` in monolithic\n * builds, may be used as a placeholder for partially applied arguments.\n *\n * **Note:** This method doesn't set the \"length\" property of partially\n * applied functions.\n *\n * @static\n * @memberOf _\n * @since 1.0.0\n * @category Function\n * @param {Function} func The function to partially apply arguments to.\n * @param {...*} [partials] The arguments to be partially applied.\n * @returns {Function} Returns the new partially applied function.\n * @example\n *\n * function greet(greeting, name) {\n * return greeting + ' ' + name;\n * }\n *\n * var greetFred = _.partialRight(greet, 'fred');\n * greetFred('hi');\n * // => 'hi fred'\n *\n * // Partially applied with placeholders.\n * var sayHelloTo = _.partialRight(greet, 'hello', _);\n * sayHelloTo('fred');\n * // => 'hello fred'\n */\n var partialRight = baseRest(function(func, partials) {\n var holders = replaceHolders(partials, getHolder(partialRight));\n return createWrap(func, WRAP_PARTIAL_RIGHT_FLAG, undefined, partials, holders);\n });\n\n /**\n * Creates a function that invokes `func` with arguments arranged according\n * to the specified `indexes` where the argument value at the first index is\n * provided as the first argument, the argument value at the second index is\n * provided as the second argument, and so on.\n *\n * @static\n * @memberOf _\n * @since 3.0.0\n * @category Function\n * @param {Function} func The function to rearrange arguments for.\n * @param {...(number|number[])} indexes The arranged argument indexes.\n * @returns {Function} Returns the new function.\n * @example\n *\n * var rearged = _.rearg(function(a, b, c) {\n * return [a, b, c];\n * }, [2, 0, 1]);\n *\n * rearged('b', 'c', 'a')\n * // => ['a', 'b', 'c']\n */\n var rearg = flatRest(function(func, indexes) {\n return createWrap(func, WRAP_REARG_FLAG, undefined, undefined, undefined, indexes);\n });\n\n /**\n * Creates a function that invokes `func` with the `this` binding of the\n * created function and arguments from `start` and beyond provided as\n * an array.\n *\n * **Note:** This method is based on the\n * [rest parameter](https://mdn.io/rest_parameters).\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Function\n * @param {Function} func The function to apply a rest parameter to.\n * @param {number} [start=func.length-1] The start position of the rest parameter.\n * @returns {Function} Returns the new function.\n * @example\n *\n * var say = _.rest(function(what, names) {\n * return what + ' ' + _.initial(names).join(', ') +\n * (_.size(names) > 1 ? ', & ' : '') + _.last(names);\n * });\n *\n * say('hello', 'fred', 'barney', 'pebbles');\n * // => 'hello fred, barney, & pebbles'\n */\n function rest(func, start) {\n if (typeof func != 'function') {\n throw new TypeError(FUNC_ERROR_TEXT);\n }\n start = start === undefined ? start : toInteger(start);\n return baseRest(func, start);\n }\n\n /**\n * Creates a function that invokes `func` with the `this` binding of the\n * create function and an array of arguments much like\n * [`Function#apply`](http://www.ecma-international.org/ecma-262/7.0/#sec-function.prototype.apply).\n *\n * **Note:** This method is based on the\n * [spread operator](https://mdn.io/spread_operator).\n *\n * @static\n * @memberOf _\n * @since 3.2.0\n * @category Function\n * @param {Function} func The function to spread arguments over.\n * @param {number} [start=0] The start position of the spread.\n * @returns {Function} Returns the new function.\n * @example\n *\n * var say = _.spread(function(who, what) {\n * return who + ' says ' + what;\n * });\n *\n * say(['fred', 'hello']);\n * // => 'fred says hello'\n *\n * var numbers = Promise.all([\n * Promise.resolve(40),\n * Promise.resolve(36)\n * ]);\n *\n * numbers.then(_.spread(function(x, y) {\n * return x + y;\n * }));\n * // => a Promise of 76\n */\n function spread(func, start) {\n if (typeof func != 'function') {\n throw new TypeError(FUNC_ERROR_TEXT);\n }\n start = start == null ? 0 : nativeMax(toInteger(start), 0);\n return baseRest(function(args) {\n var array = args[start],\n otherArgs = castSlice(args, 0, start);\n\n if (array) {\n arrayPush(otherArgs, array);\n }\n return apply(func, this, otherArgs);\n });\n }\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 */\n function 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\n /**\n * Creates a function that accepts up to one argument, ignoring any\n * additional arguments.\n *\n * @static\n * @memberOf _\n * @since 4.0.0\n * @category Function\n * @param {Function} func The function to cap arguments for.\n * @returns {Function} Returns the new capped function.\n * @example\n *\n * _.map(['6', '8', '10'], _.unary(parseInt));\n * // => [6, 8, 10]\n */\n function unary(func) {\n return ary(func, 1);\n }\n\n /**\n * Creates a function that provides `value` to `wrapper` as its first\n * argument. Any additional arguments provided to the function are appended\n * to those provided to the `wrapper`. The wrapper is invoked with the `this`\n * binding of the created function.\n *\n * @static\n * @memberOf _\n * @since 0.1.0\n * @category Function\n * @param {*} value The value to wrap.\n * @param {Function} [wrapper=identity] The wrapper function.\n * @returns {Function} Returns the new function.\n * @example\n *\n * var p = _.wrap(_.escape, function(func, text) {\n * return '
\r\n \r\n \r\n \r\n \r\n \r\n \r\n\r\n\r\n\r\n\r\n\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!./List.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!./List.vue?vue&type=script&lang=js&\"","import { render, staticRenderFns } from \"./List.vue?vue&type=template&id=0f60c235&\"\nimport script from \"./List.vue?vue&type=script&lang=js&\"\nexport * from \"./List.vue?vue&type=script&lang=js&\"\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 null,\n null\n \n)\n\nexport default component.exports","var isObject = require('./_is-object');\nmodule.exports = function (it) {\n if (!isObject(it)) throw TypeError(it + ' is not an object!');\n return it;\n};\n","var utils = require(\"./utils\");\nvar ParseError = require(\"./ParseError\");\n\n/* This file contains a list of functions that we parse, identified by\n * the calls to defineFunction.\n *\n * The first argument to defineFunction is a single name or a list of names.\n * All functions named in such a list will share a single implementation.\n *\n * Each declared function can have associated properties, which\n * include the following:\n *\n * - numArgs: The number of arguments the function takes.\n * If this is the only property, it can be passed as a number\n * instead of an element of a properties object.\n * - argTypes: (optional) An array corresponding to each argument of the\n * function, giving the type of argument that should be parsed. Its\n * length should be equal to `numArgs + numOptionalArgs`. Valid\n * types:\n * - \"size\": A size-like thing, such as \"1em\" or \"5ex\"\n * - \"color\": An html color, like \"#abc\" or \"blue\"\n * - \"original\": The same type as the environment that the\n * function being parsed is in (e.g. used for the\n * bodies of functions like \\color where the first\n * argument is special and the second argument is\n * parsed normally)\n * Other possible types (probably shouldn't be used)\n * - \"text\": Text-like (e.g. \\text)\n * - \"math\": Normal math\n * If undefined, this will be treated as an appropriate length\n * array of \"original\" strings\n * - greediness: (optional) The greediness of the function to use ungrouped\n * arguments.\n *\n * E.g. if you have an expression\n * \\sqrt \\frac 1 2\n * since \\frac has greediness=2 vs \\sqrt's greediness=1, \\frac\n * will use the two arguments '1' and '2' as its two arguments,\n * then that whole function will be used as the argument to\n * \\sqrt. On the other hand, the expressions\n * \\frac \\frac 1 2 3\n * and\n * \\frac \\sqrt 1 2\n * will fail because \\frac and \\frac have equal greediness\n * and \\sqrt has a lower greediness than \\frac respectively. To\n * make these parse, we would have to change them to:\n * \\frac {\\frac 1 2} 3\n * and\n * \\frac {\\sqrt 1} 2\n *\n * The default value is `1`\n * - allowedInText: (optional) Whether or not the function is allowed inside\n * text mode (default false)\n * - numOptionalArgs: (optional) The number of optional arguments the function\n * should parse. If the optional arguments aren't found,\n * `null` will be passed to the handler in their place.\n * (default 0)\n *\n * The last argument is that implementation, the handler for the function(s).\n * It is called to handle these functions and their arguments.\n * It receives two arguments:\n * - context contains information and references provided by the parser\n * - args is an array of arguments obtained from TeX input\n * The context contains the following properties:\n * - funcName: the text (i.e. name) of the function, including \\\n * - parser: the parser object\n * - lexer: the lexer object\n * - positions: the positions in the overall string of the function\n * and the arguments.\n * The latter three should only be used to produce error messages.\n *\n * The function should return an object with the following keys:\n * - type: The type of element that this is. This is then used in\n * buildHTML/buildMathML to determine which function\n * should be called to build this node into a DOM node\n * Any other data can be added to the object, which will be passed\n * in to the function in buildHTML/buildMathML as `group.value`.\n */\n\nfunction defineFunction(names, props, handler) {\n if (typeof names === \"string\") {\n names = [names];\n }\n if (typeof props === \"number\") {\n props = { numArgs: props };\n }\n // Set default values of functions\n var data = {\n numArgs: props.numArgs,\n argTypes: props.argTypes,\n greediness: (props.greediness === undefined) ? 1 : props.greediness,\n allowedInText: !!props.allowedInText,\n numOptionalArgs: props.numOptionalArgs || 0,\n handler: handler,\n };\n for (var i = 0; i < names.length; ++i) {\n module.exports[names[i]] = data;\n }\n}\n\n// A normal square root\ndefineFunction(\"\\\\sqrt\", {\n numArgs: 1,\n numOptionalArgs: 1,\n}, function(context, args) {\n var index = args[0];\n var body = args[1];\n return {\n type: \"sqrt\",\n body: body,\n index: index,\n };\n});\n\n// Some non-mathy text\ndefineFunction(\"\\\\text\", {\n numArgs: 1,\n argTypes: [\"text\"],\n greediness: 2,\n}, function(context, args) {\n var body = args[0];\n // Since the corresponding buildHTML/buildMathML function expects a\n // list of elements, we normalize for different kinds of arguments\n // TODO(emily): maybe this should be done somewhere else\n var inner;\n if (body.type === \"ordgroup\") {\n inner = body.value;\n } else {\n inner = [body];\n }\n\n return {\n type: \"text\",\n body: inner,\n };\n});\n\n// A two-argument custom color\ndefineFunction(\"\\\\color\", {\n numArgs: 2,\n allowedInText: true,\n greediness: 3,\n argTypes: [\"color\", \"original\"],\n}, function(context, args) {\n var color = args[0];\n var body = args[1];\n // Normalize the different kinds of bodies (see \\text above)\n var inner;\n if (body.type === \"ordgroup\") {\n inner = body.value;\n } else {\n inner = [body];\n }\n\n return {\n type: \"color\",\n color: color.value,\n value: inner,\n };\n});\n\n// An overline\ndefineFunction(\"\\\\overline\", {\n numArgs: 1,\n}, function(context, args) {\n var body = args[0];\n return {\n type: \"overline\",\n body: body,\n };\n});\n\n// An underline\ndefineFunction(\"\\\\underline\", {\n numArgs: 1,\n}, function(context, args) {\n var body = args[0];\n return {\n type: \"underline\",\n body: body,\n };\n});\n\n// A box of the width and height\ndefineFunction(\"\\\\rule\", {\n numArgs: 2,\n numOptionalArgs: 1,\n argTypes: [\"size\", \"size\", \"size\"],\n}, function(context, args) {\n var shift = args[0];\n var width = args[1];\n var height = args[2];\n return {\n type: \"rule\",\n shift: shift && shift.value,\n width: width.value,\n height: height.value,\n };\n});\n\n// A KaTeX logo\ndefineFunction(\"\\\\KaTeX\", {\n numArgs: 0,\n}, function(context) {\n return {\n type: \"katex\",\n };\n});\n\ndefineFunction(\"\\\\phantom\", {\n numArgs: 1,\n}, function(context, args) {\n var body = args[0];\n var inner;\n if (body.type === \"ordgroup\") {\n inner = body.value;\n } else {\n inner = [body];\n }\n\n return {\n type: \"phantom\",\n value: inner,\n };\n});\n\n// Extra data needed for the delimiter handler down below\nvar delimiterSizes = {\n \"\\\\bigl\" : {type: \"open\", size: 1},\n \"\\\\Bigl\" : {type: \"open\", size: 2},\n \"\\\\biggl\": {type: \"open\", size: 3},\n \"\\\\Biggl\": {type: \"open\", size: 4},\n \"\\\\bigr\" : {type: \"close\", size: 1},\n \"\\\\Bigr\" : {type: \"close\", size: 2},\n \"\\\\biggr\": {type: \"close\", size: 3},\n \"\\\\Biggr\": {type: \"close\", size: 4},\n \"\\\\bigm\" : {type: \"rel\", size: 1},\n \"\\\\Bigm\" : {type: \"rel\", size: 2},\n \"\\\\biggm\": {type: \"rel\", size: 3},\n \"\\\\Biggm\": {type: \"rel\", size: 4},\n \"\\\\big\" : {type: \"textord\", size: 1},\n \"\\\\Big\" : {type: \"textord\", size: 2},\n \"\\\\bigg\" : {type: \"textord\", size: 3},\n \"\\\\Bigg\" : {type: \"textord\", size: 4},\n};\n\nvar delimiters = [\n \"(\", \")\", \"[\", \"\\\\lbrack\", \"]\", \"\\\\rbrack\",\n \"\\\\{\", \"\\\\lbrace\", \"\\\\}\", \"\\\\rbrace\",\n \"\\\\lfloor\", \"\\\\rfloor\", \"\\\\lceil\", \"\\\\rceil\",\n \"<\", \">\", \"\\\\langle\", \"\\\\rangle\", \"\\\\lt\", \"\\\\gt\",\n \"\\\\lvert\", \"\\\\rvert\", \"\\\\lVert\", \"\\\\rVert\",\n \"\\\\lgroup\", \"\\\\rgroup\", \"\\\\lmoustache\", \"\\\\rmoustache\",\n \"/\", \"\\\\backslash\",\n \"|\", \"\\\\vert\", \"\\\\|\", \"\\\\Vert\",\n \"\\\\uparrow\", \"\\\\Uparrow\",\n \"\\\\downarrow\", \"\\\\Downarrow\",\n \"\\\\updownarrow\", \"\\\\Updownarrow\",\n \".\",\n];\n\nvar fontAliases = {\n \"\\\\Bbb\": \"\\\\mathbb\",\n \"\\\\bold\": \"\\\\mathbf\",\n \"\\\\frak\": \"\\\\mathfrak\",\n};\n\n// Single-argument color functions\ndefineFunction([\n \"\\\\blue\", \"\\\\orange\", \"\\\\pink\", \"\\\\red\",\n \"\\\\green\", \"\\\\gray\", \"\\\\purple\",\n \"\\\\blueA\", \"\\\\blueB\", \"\\\\blueC\", \"\\\\blueD\", \"\\\\blueE\",\n \"\\\\tealA\", \"\\\\tealB\", \"\\\\tealC\", \"\\\\tealD\", \"\\\\tealE\",\n \"\\\\greenA\", \"\\\\greenB\", \"\\\\greenC\", \"\\\\greenD\", \"\\\\greenE\",\n \"\\\\goldA\", \"\\\\goldB\", \"\\\\goldC\", \"\\\\goldD\", \"\\\\goldE\",\n \"\\\\redA\", \"\\\\redB\", \"\\\\redC\", \"\\\\redD\", \"\\\\redE\",\n \"\\\\maroonA\", \"\\\\maroonB\", \"\\\\maroonC\", \"\\\\maroonD\", \"\\\\maroonE\",\n \"\\\\purpleA\", \"\\\\purpleB\", \"\\\\purpleC\", \"\\\\purpleD\", \"\\\\purpleE\",\n \"\\\\mintA\", \"\\\\mintB\", \"\\\\mintC\",\n \"\\\\grayA\", \"\\\\grayB\", \"\\\\grayC\", \"\\\\grayD\", \"\\\\grayE\",\n \"\\\\grayF\", \"\\\\grayG\", \"\\\\grayH\", \"\\\\grayI\",\n \"\\\\kaBlue\", \"\\\\kaGreen\",\n], {\n numArgs: 1,\n allowedInText: true,\n greediness: 3,\n}, function(context, args) {\n var body = args[0];\n var atoms;\n if (body.type === \"ordgroup\") {\n atoms = body.value;\n } else {\n atoms = [body];\n }\n\n return {\n type: \"color\",\n color: \"katex-\" + context.funcName.slice(1),\n value: atoms,\n };\n});\n\n// There are 2 flags for operators; whether they produce limits in\n// displaystyle, and whether they are symbols and should grow in\n// displaystyle. These four groups cover the four possible choices.\n\n// No limits, not symbols\ndefineFunction([\n \"\\\\arcsin\", \"\\\\arccos\", \"\\\\arctan\", \"\\\\arg\", \"\\\\cos\", \"\\\\cosh\",\n \"\\\\cot\", \"\\\\coth\", \"\\\\csc\", \"\\\\deg\", \"\\\\dim\", \"\\\\exp\", \"\\\\hom\",\n \"\\\\ker\", \"\\\\lg\", \"\\\\ln\", \"\\\\log\", \"\\\\sec\", \"\\\\sin\", \"\\\\sinh\",\n \"\\\\tan\", \"\\\\tanh\",\n], {\n numArgs: 0,\n}, function(context) {\n return {\n type: \"op\",\n limits: false,\n symbol: false,\n body: context.funcName,\n };\n});\n\n// Limits, not symbols\ndefineFunction([\n \"\\\\det\", \"\\\\gcd\", \"\\\\inf\", \"\\\\lim\", \"\\\\liminf\", \"\\\\limsup\", \"\\\\max\",\n \"\\\\min\", \"\\\\Pr\", \"\\\\sup\",\n], {\n numArgs: 0,\n}, function(context) {\n return {\n type: \"op\",\n limits: true,\n symbol: false,\n body: context.funcName,\n };\n});\n\n// No limits, symbols\ndefineFunction([\n \"\\\\int\", \"\\\\iint\", \"\\\\iiint\", \"\\\\oint\",\n], {\n numArgs: 0,\n}, function(context) {\n return {\n type: \"op\",\n limits: false,\n symbol: true,\n body: context.funcName,\n };\n});\n\n// Limits, symbols\ndefineFunction([\n \"\\\\coprod\", \"\\\\bigvee\", \"\\\\bigwedge\", \"\\\\biguplus\", \"\\\\bigcap\",\n \"\\\\bigcup\", \"\\\\intop\", \"\\\\prod\", \"\\\\sum\", \"\\\\bigotimes\",\n \"\\\\bigoplus\", \"\\\\bigodot\", \"\\\\bigsqcup\", \"\\\\smallint\",\n], {\n numArgs: 0,\n}, function(context) {\n return {\n type: \"op\",\n limits: true,\n symbol: true,\n body: context.funcName,\n };\n});\n\n// Fractions\ndefineFunction([\n \"\\\\dfrac\", \"\\\\frac\", \"\\\\tfrac\",\n \"\\\\dbinom\", \"\\\\binom\", \"\\\\tbinom\",\n], {\n numArgs: 2,\n greediness: 2,\n}, function(context, args) {\n var numer = args[0];\n var denom = args[1];\n var hasBarLine;\n var leftDelim = null;\n var rightDelim = null;\n var size = \"auto\";\n\n switch (context.funcName) {\n case \"\\\\dfrac\":\n case \"\\\\frac\":\n case \"\\\\tfrac\":\n hasBarLine = true;\n break;\n case \"\\\\dbinom\":\n case \"\\\\binom\":\n case \"\\\\tbinom\":\n hasBarLine = false;\n leftDelim = \"(\";\n rightDelim = \")\";\n break;\n default:\n throw new Error(\"Unrecognized genfrac command\");\n }\n\n switch (context.funcName) {\n case \"\\\\dfrac\":\n case \"\\\\dbinom\":\n size = \"display\";\n break;\n case \"\\\\tfrac\":\n case \"\\\\tbinom\":\n size = \"text\";\n break;\n }\n\n return {\n type: \"genfrac\",\n numer: numer,\n denom: denom,\n hasBarLine: hasBarLine,\n leftDelim: leftDelim,\n rightDelim: rightDelim,\n size: size,\n };\n});\n\n// Left and right overlap functions\ndefineFunction([\"\\\\llap\", \"\\\\rlap\"], {\n numArgs: 1,\n allowedInText: true,\n}, function(context, args) {\n var body = args[0];\n return {\n type: context.funcName.slice(1),\n body: body,\n };\n});\n\n// Delimiter functions\ndefineFunction([\n \"\\\\bigl\", \"\\\\Bigl\", \"\\\\biggl\", \"\\\\Biggl\",\n \"\\\\bigr\", \"\\\\Bigr\", \"\\\\biggr\", \"\\\\Biggr\",\n \"\\\\bigm\", \"\\\\Bigm\", \"\\\\biggm\", \"\\\\Biggm\",\n \"\\\\big\", \"\\\\Big\", \"\\\\bigg\", \"\\\\Bigg\",\n \"\\\\left\", \"\\\\right\",\n], {\n numArgs: 1,\n}, function(context, args) {\n var delim = args[0];\n if (!utils.contains(delimiters, delim.value)) {\n throw new ParseError(\n \"Invalid delimiter: '\" + delim.value + \"' after '\" +\n context.funcName + \"'\",\n context.lexer, context.positions[1]);\n }\n\n // \\left and \\right are caught somewhere in Parser.js, which is\n // why this data doesn't match what is in buildHTML.\n if (context.funcName === \"\\\\left\" || context.funcName === \"\\\\right\") {\n return {\n type: \"leftright\",\n value: delim.value,\n };\n } else {\n return {\n type: \"delimsizing\",\n size: delimiterSizes[context.funcName].size,\n delimType: delimiterSizes[context.funcName].type,\n value: delim.value,\n };\n }\n});\n\n// Sizing functions (handled in Parser.js explicitly, hence no handler)\ndefineFunction([\n \"\\\\tiny\", \"\\\\scriptsize\", \"\\\\footnotesize\", \"\\\\small\",\n \"\\\\normalsize\", \"\\\\large\", \"\\\\Large\", \"\\\\LARGE\", \"\\\\huge\", \"\\\\Huge\",\n], 0, null);\n\n// Style changing functions (handled in Parser.js explicitly, hence no\n// handler)\ndefineFunction([\n \"\\\\displaystyle\", \"\\\\textstyle\", \"\\\\scriptstyle\",\n \"\\\\scriptscriptstyle\",\n], 0, null);\n\ndefineFunction([\n // styles\n \"\\\\mathrm\", \"\\\\mathit\", \"\\\\mathbf\",\n\n // families\n \"\\\\mathbb\", \"\\\\mathcal\", \"\\\\mathfrak\", \"\\\\mathscr\", \"\\\\mathsf\",\n \"\\\\mathtt\",\n\n // aliases\n \"\\\\Bbb\", \"\\\\bold\", \"\\\\frak\",\n], {\n numArgs: 1,\n greediness: 2,\n}, function(context, args) {\n var body = args[0];\n var func = context.funcName;\n if (func in fontAliases) {\n func = fontAliases[func];\n }\n return {\n type: \"font\",\n font: func.slice(1),\n body: body,\n };\n});\n\n// Accents\ndefineFunction([\n \"\\\\acute\", \"\\\\grave\", \"\\\\ddot\", \"\\\\tilde\", \"\\\\bar\", \"\\\\breve\",\n \"\\\\check\", \"\\\\hat\", \"\\\\vec\", \"\\\\dot\",\n // We don't support expanding accents yet\n // \"\\\\widetilde\", \"\\\\widehat\"\n], {\n numArgs: 1,\n}, function(context, args) {\n var base = args[0];\n return {\n type: \"accent\",\n accent: context.funcName,\n base: base,\n };\n});\n\n// Infix generalized fractions\ndefineFunction([\"\\\\over\", \"\\\\choose\"], {\n numArgs: 0,\n}, function(context) {\n var replaceWith;\n switch (context.funcName) {\n case \"\\\\over\":\n replaceWith = \"\\\\frac\";\n break;\n case \"\\\\choose\":\n replaceWith = \"\\\\binom\";\n break;\n default:\n throw new Error(\"Unrecognized infix genfrac command\");\n }\n return {\n type: \"infix\",\n replaceWith: replaceWith,\n };\n});\n\n// Row breaks for aligned data\ndefineFunction([\"\\\\\\\\\", \"\\\\cr\"], {\n numArgs: 0,\n numOptionalArgs: 1,\n argTypes: [\"size\"],\n}, function(context, args) {\n var size = args[0];\n return {\n type: \"cr\",\n size: size,\n };\n});\n\n// Environment delimiters\ndefineFunction([\"\\\\begin\", \"\\\\end\"], {\n numArgs: 1,\n argTypes: [\"text\"],\n}, function(context, args) {\n var nameGroup = args[0];\n if (nameGroup.type !== \"ordgroup\") {\n throw new ParseError(\n \"Invalid environment name\",\n context.lexer, context.positions[1]);\n }\n var name = \"\";\n for (var i = 0; i < nameGroup.value.length; ++i) {\n name += nameGroup.value[i].value;\n }\n return {\n type: \"environment\",\n name: name,\n namepos: context.positions[1],\n };\n});\n","module.exports = function (it) {\n return typeof it === 'object' ? it !== null : typeof it === 'function';\n};\n","// Process ^superscript^\n\n'use strict';\n\n// same as UNESCAPE_MD_RE plus a space\nvar UNESCAPE_RE = /\\\\([ \\\\!\"#$%&'()*+,.\\/:;<=>?@[\\]^_`{|}~-])/g;\n\nfunction superscript(state, silent) {\n var found,\n content,\n token,\n max = state.posMax,\n start = state.pos;\n\n if (state.src.charCodeAt(start) !== 0x5E/* ^ */) { return false; }\n if (silent) { return false; } // don't run any pairs in validation mode\n if (start + 2 >= max) { return false; }\n\n state.pos = start + 1;\n\n while (state.pos < max) {\n if (state.src.charCodeAt(state.pos) === 0x5E/* ^ */) {\n found = true;\n break;\n }\n\n state.md.inline.skipToken(state);\n }\n\n if (!found || start + 1 === state.pos) {\n state.pos = start;\n return false;\n }\n\n content = state.src.slice(start + 1, state.pos);\n\n // don't allow unescaped spaces/newlines inside\n if (content.match(/(^|[^\\\\])(\\\\\\\\)*\\s/)) {\n state.pos = start;\n return false;\n }\n\n // found!\n state.posMax = state.pos;\n state.pos = start + 1;\n\n // Earlier we checked !silent, but this implementation does not need it\n token = state.push('sup_open', 'sup', 1);\n token.markup = '^';\n\n token = state.push('text', '', 0);\n token.content = content.replace(UNESCAPE_RE, '$1');\n\n token = state.push('sup_close', 'sup', -1);\n token.markup = '^';\n\n state.pos = state.posMax + 1;\n state.posMax = max;\n return true;\n}\n\n\nmodule.exports = function sup_plugin(md) {\n md.inline.ruler.after('emphasis', 'sup', superscript);\n};\n","module.exports=/[!-#%-\\*,-\\/:;\\?@\\[-\\]_\\{\\}\\xA1\\xA7\\xAB\\xB6\\xB7\\xBB\\xBF\\u037E\\u0387\\u055A-\\u055F\\u0589\\u058A\\u05BE\\u05C0\\u05C3\\u05C6\\u05F3\\u05F4\\u0609\\u060A\\u060C\\u060D\\u061B\\u061E\\u061F\\u066A-\\u066D\\u06D4\\u0700-\\u070D\\u07F7-\\u07F9\\u0830-\\u083E\\u085E\\u0964\\u0965\\u0970\\u09FD\\u0A76\\u0AF0\\u0C84\\u0DF4\\u0E4F\\u0E5A\\u0E5B\\u0F04-\\u0F12\\u0F14\\u0F3A-\\u0F3D\\u0F85\\u0FD0-\\u0FD4\\u0FD9\\u0FDA\\u104A-\\u104F\\u10FB\\u1360-\\u1368\\u1400\\u166D\\u166E\\u169B\\u169C\\u16EB-\\u16ED\\u1735\\u1736\\u17D4-\\u17D6\\u17D8-\\u17DA\\u1800-\\u180A\\u1944\\u1945\\u1A1E\\u1A1F\\u1AA0-\\u1AA6\\u1AA8-\\u1AAD\\u1B5A-\\u1B60\\u1BFC-\\u1BFF\\u1C3B-\\u1C3F\\u1C7E\\u1C7F\\u1CC0-\\u1CC7\\u1CD3\\u2010-\\u2027\\u2030-\\u2043\\u2045-\\u2051\\u2053-\\u205E\\u207D\\u207E\\u208D\\u208E\\u2308-\\u230B\\u2329\\u232A\\u2768-\\u2775\\u27C5\\u27C6\\u27E6-\\u27EF\\u2983-\\u2998\\u29D8-\\u29DB\\u29FC\\u29FD\\u2CF9-\\u2CFC\\u2CFE\\u2CFF\\u2D70\\u2E00-\\u2E2E\\u2E30-\\u2E4E\\u3001-\\u3003\\u3008-\\u3011\\u3014-\\u301F\\u3030\\u303D\\u30A0\\u30FB\\uA4FE\\uA4FF\\uA60D-\\uA60F\\uA673\\uA67E\\uA6F2-\\uA6F7\\uA874-\\uA877\\uA8CE\\uA8CF\\uA8F8-\\uA8FA\\uA8FC\\uA92E\\uA92F\\uA95F\\uA9C1-\\uA9CD\\uA9DE\\uA9DF\\uAA5C-\\uAA5F\\uAADE\\uAADF\\uAAF0\\uAAF1\\uABEB\\uFD3E\\uFD3F\\uFE10-\\uFE19\\uFE30-\\uFE52\\uFE54-\\uFE61\\uFE63\\uFE68\\uFE6A\\uFE6B\\uFF01-\\uFF03\\uFF05-\\uFF0A\\uFF0C-\\uFF0F\\uFF1A\\uFF1B\\uFF1F\\uFF20\\uFF3B-\\uFF3D\\uFF3F\\uFF5B\\uFF5D\\uFF5F-\\uFF65]|\\uD800[\\uDD00-\\uDD02\\uDF9F\\uDFD0]|\\uD801\\uDD6F|\\uD802[\\uDC57\\uDD1F\\uDD3F\\uDE50-\\uDE58\\uDE7F\\uDEF0-\\uDEF6\\uDF39-\\uDF3F\\uDF99-\\uDF9C]|\\uD803[\\uDF55-\\uDF59]|\\uD804[\\uDC47-\\uDC4D\\uDCBB\\uDCBC\\uDCBE-\\uDCC1\\uDD40-\\uDD43\\uDD74\\uDD75\\uDDC5-\\uDDC8\\uDDCD\\uDDDB\\uDDDD-\\uDDDF\\uDE38-\\uDE3D\\uDEA9]|\\uD805[\\uDC4B-\\uDC4F\\uDC5B\\uDC5D\\uDCC6\\uDDC1-\\uDDD7\\uDE41-\\uDE43\\uDE60-\\uDE6C\\uDF3C-\\uDF3E]|\\uD806[\\uDC3B\\uDE3F-\\uDE46\\uDE9A-\\uDE9C\\uDE9E-\\uDEA2]|\\uD807[\\uDC41-\\uDC45\\uDC70\\uDC71\\uDEF7\\uDEF8]|\\uD809[\\uDC70-\\uDC74]|\\uD81A[\\uDE6E\\uDE6F\\uDEF5\\uDF37-\\uDF3B\\uDF44]|\\uD81B[\\uDE97-\\uDE9A]|\\uD82F\\uDC9F|\\uD836[\\uDE87-\\uDE8B]|\\uD83A[\\uDD5E\\uDD5F]/","/**\n * class Renderer\n *\n * Generates HTML from parsed token stream. Each instance has independent\n * copy of rules. Those can be rewritten with ease. Also, you can add new\n * rules if you create plugin and adds new token types.\n **/\n'use strict';\n\n\nvar assign = require('./common/utils').assign;\nvar unescapeAll = require('./common/utils').unescapeAll;\nvar escapeHtml = require('./common/utils').escapeHtml;\n\n\n////////////////////////////////////////////////////////////////////////////////\n\nvar default_rules = {};\n\n\ndefault_rules.code_inline = function (tokens, idx, options, env, slf) {\n var token = tokens[idx],\n attrs = slf.renderAttrs(token);\n\n return '' +\n escapeHtml(tokens[idx].content) +\n '';\n};\n\n\ndefault_rules.code_block = function (tokens, idx, options, env, slf) {\n var token = tokens[idx],\n attrs = slf.renderAttrs(token);\n\n return '' +\n escapeHtml(tokens[idx].content) +\n '\\n';\n};\n\n\ndefault_rules.fence = function (tokens, idx, options, env, slf) {\n var token = tokens[idx],\n info = token.info ? unescapeAll(token.info).trim() : '',\n langName = '',\n highlighted, i, tmpAttrs, tmpToken;\n\n if (info) {\n langName = info.split(/\\s+/g)[0];\n }\n\n if (options.highlight) {\n highlighted = options.highlight(token.content, langName) || escapeHtml(token.content);\n } else {\n highlighted = escapeHtml(token.content);\n }\n\n if (highlighted.indexOf(''\n + highlighted\n + '\\n';\n }\n\n\n return '
'\n + highlighted\n + '
\\n';\n};\n\n\ndefault_rules.image = function (tokens, idx, options, env, slf) {\n var token = tokens[idx];\n\n // \"alt\" attr MUST be set, even if empty. Because it's mandatory and\n // should be placed on proper position for tests.\n //\n // Replace content with actual value\n\n token.attrs[token.attrIndex('alt')][1] =\n slf.renderInlineAsText(token.children, options, env);\n\n return slf.renderToken(tokens, idx, options);\n};\n\n\ndefault_rules.hardbreak = function (tokens, idx, options /*, env */) {\n return options.xhtmlOut ? ' \\n' : ' \\n';\n};\ndefault_rules.softbreak = function (tokens, idx, options /*, env */) {\n return options.breaks ? (options.xhtmlOut ? ' \\n' : ' \\n') : '\\n';\n};\n\n\ndefault_rules.text = function (tokens, idx /*, options, env */) {\n return escapeHtml(tokens[idx].content);\n};\n\n\ndefault_rules.html_block = function (tokens, idx /*, options, env */) {\n return tokens[idx].content;\n};\ndefault_rules.html_inline = function (tokens, idx /*, options, env */) {\n return tokens[idx].content;\n};\n\n\n/**\n * new Renderer()\n *\n * Creates new [[Renderer]] instance and fill [[Renderer#rules]] with defaults.\n **/\nfunction Renderer() {\n\n /**\n * Renderer#rules -> Object\n *\n * Contains render rules for tokens. Can be updated and extended.\n *\n * ##### Example\n *\n * ```javascript\n * var md = require('markdown-it')();\n *\n * md.renderer.rules.strong_open = function () { return ''; };\n * md.renderer.rules.strong_close = function () { return ''; };\n *\n * var result = md.renderInline(...);\n * ```\n *\n * Each rule is called as independed static function with fixed signature:\n *\n * ```javascript\n * function my_token_render(tokens, idx, options, env, renderer) {\n * // ...\n * return renderedHTML;\n * }\n * ```\n *\n * See [source code](https://github.com/markdown-it/markdown-it/blob/master/lib/renderer.js)\n * for more details and examples.\n **/\n this.rules = assign({}, default_rules);\n}\n\n\n/**\n * Renderer.renderAttrs(token) -> String\n *\n * Render token attributes to string.\n **/\nRenderer.prototype.renderAttrs = function renderAttrs(token) {\n var i, l, result;\n\n if (!token.attrs) { return ''; }\n\n result = '';\n\n for (i = 0, l = token.attrs.length; i < l; i++) {\n result += ' ' + escapeHtml(token.attrs[i][0]) + '=\"' + escapeHtml(token.attrs[i][1]) + '\"';\n }\n\n return result;\n};\n\n\n/**\n * Renderer.renderToken(tokens, idx, options) -> String\n * - tokens (Array): list of tokens\n * - idx (Numbed): token index to render\n * - options (Object): params of parser instance\n *\n * Default token renderer. Can be overriden by custom function\n * in [[Renderer#rules]].\n **/\nRenderer.prototype.renderToken = function renderToken(tokens, idx, options) {\n var nextToken,\n result = '',\n needLf = false,\n token = tokens[idx];\n\n // Tight list paragraphs\n if (token.hidden) {\n return '';\n }\n\n // Insert a newline between hidden paragraph and subsequent opening\n // block-level tag.\n //\n // For example, here we should insert a newline before blockquote:\n // - a\n // >\n //\n if (token.block && token.nesting !== -1 && idx && tokens[idx - 1].hidden) {\n result += '\\n';\n }\n\n // Add token name, e.g. ``.\n //\n needLf = false;\n }\n }\n }\n }\n\n result += needLf ? '>\\n' : '>';\n\n return result;\n};\n\n\n/**\n * Renderer.renderInline(tokens, options, env) -> String\n * - tokens (Array): list on block tokens to renter\n * - options (Object): params of parser instance\n * - env (Object): additional data from parsed input (references, for example)\n *\n * The same as [[Renderer.render]], but for single token of `inline` type.\n **/\nRenderer.prototype.renderInline = function (tokens, options, env) {\n var type,\n result = '',\n rules = this.rules;\n\n for (var i = 0, len = tokens.length; i < len; i++) {\n type = tokens[i].type;\n\n if (typeof rules[type] !== 'undefined') {\n result += rules[type](tokens, i, options, env, this);\n } else {\n result += this.renderToken(tokens, i, options);\n }\n }\n\n return result;\n};\n\n\n/** internal\n * Renderer.renderInlineAsText(tokens, options, env) -> String\n * - tokens (Array): list on block tokens to renter\n * - options (Object): params of parser instance\n * - env (Object): additional data from parsed input (references, for example)\n *\n * Special kludge for image `alt` attributes to conform CommonMark spec.\n * Don't try to use it! Spec requires to show `alt` content with stripped markup,\n * instead of simple escaping.\n **/\nRenderer.prototype.renderInlineAsText = function (tokens, options, env) {\n var result = '';\n\n for (var i = 0, len = tokens.length; i < len; i++) {\n if (tokens[i].type === 'text') {\n result += tokens[i].content;\n } else if (tokens[i].type === 'image') {\n result += this.renderInlineAsText(tokens[i].children, options, env);\n }\n }\n\n return result;\n};\n\n\n/**\n * Renderer.render(tokens, options, env) -> String\n * - tokens (Array): list on block tokens to renter\n * - options (Object): params of parser instance\n * - env (Object): additional data from parsed input (references, for example)\n *\n * Takes token stream and generates HTML. Probably, you will never need to call\n * this method directly.\n **/\nRenderer.prototype.render = function (tokens, options, env) {\n var i, len, type,\n result = '',\n rules = this.rules;\n\n for (i = 0, len = tokens.length; i < len; i++) {\n type = tokens[i].type;\n\n if (type === 'inline') {\n result += this.renderInline(tokens[i].children, options, env);\n } else if (typeof rules[type] !== 'undefined') {\n result += rules[tokens[i].type](tokens, i, options, env, this);\n } else {\n result += this.renderToken(tokens, i, options, env);\n }\n }\n\n return result;\n};\n\nmodule.exports = Renderer;\n","require('../modules/web.dom.iterable');\nrequire('../modules/es6.string.iterator');\nmodule.exports = require('../modules/core.get-iterator');\n","// Parse link title\n//\n'use strict';\n\n\nvar unescapeAll = require('../common/utils').unescapeAll;\n\n\nmodule.exports = function parseLinkTitle(str, pos, max) {\n var code,\n marker,\n lines = 0,\n start = pos,\n result = {\n ok: false,\n pos: 0,\n lines: 0,\n str: ''\n };\n\n if (pos >= max) { return result; }\n\n marker = str.charCodeAt(pos);\n\n if (marker !== 0x22 /* \" */ && marker !== 0x27 /* ' */ && marker !== 0x28 /* ( */) { return result; }\n\n pos++;\n\n // if opening marker is \"(\", switch it to closing marker \")\"\n if (marker === 0x28) { marker = 0x29; }\n\n while (pos < max) {\n code = str.charCodeAt(pos);\n if (code === marker) {\n result.pos = pos + 1;\n result.lines = lines;\n result.str = unescapeAll(str.slice(start + 1, pos));\n result.ok = true;\n return result;\n } else if (code === 0x0A) {\n lines++;\n } else if (code === 0x5C /* \\ */ && pos + 1 < max) {\n pos++;\n if (str.charCodeAt(pos) === 0x0A) {\n lines++;\n }\n }\n\n pos++;\n }\n\n return result;\n};\n","/*\n * List of Unicode code that are flagged as mark.\n *\n * Contains Unicode code of:\n * - Mc = Mark, spacing combining\n * - Me = Mark, enclosing\n * - Mn = Mark, nonspacing\n *\n * This list has been computed from http://unicode.org/Public/UNIDATA/UnicodeData.txt\n * curl -s http://unicode.org/Public/UNIDATA/UnicodeData.txt | grep -E ';Mc;|;Me;|;Mn;' | cut -d \\; -f 1 | xargs -I{} printf '%d, ' 0x{}\n *\n */\nexports.M = [768, 769, 770, 771, 772, 773, 774, 775, 776, 777, 778, 779, 780, 781, 782, 783, 784, 785, 786, 787, 788, 789, 790, 791, 792, 793, 794, 795, 796, 797, 798, 799, 800, 801, 802, 803, 804, 805, 806, 807, 808, 809, 810, 811, 812, 813, 814, 815, 816, 817, 818, 819, 820, 821, 822, 823, 824, 825, 826, 827, 828, 829, 830, 831, 832, 833, 834, 835, 836, 837, 838, 839, 840, 841, 842, 843, 844, 845, 846, 847, 848, 849, 850, 851, 852, 853, 854, 855, 856, 857, 858, 859, 860, 861, 862, 863, 864, 865, 866, 867, 868, 869, 870, 871, 872, 873, 874, 875, 876, 877, 878, 879, 1155, 1156, 1157, 1158, 1159, 1160, 1161, 1425, 1426, 1427, 1428, 1429, 1430, 1431, 1432, 1433, 1434, 1435, 1436, 1437, 1438, 1439, 1440, 1441, 1442, 1443, 1444, 1445, 1446, 1447, 1448, 1449, 1450, 1451, 1452, 1453, 1454, 1455, 1456, 1457, 1458, 1459, 1460, 1461, 1462, 1463, 1464, 1465, 1466, 1467, 1468, 1469, 1471, 1473, 1474, 1476, 1477, 1479, 1552, 1553, 1554, 1555, 1556, 1557, 1558, 1559, 1560, 1561, 1562, 1611, 1612, 1613, 1614, 1615, 1616, 1617, 1618, 1619, 1620, 1621, 1622, 1623, 1624, 1625, 1626, 1627, 1628, 1629, 1630, 1631, 1648, 1750, 1751, 1752, 1753, 1754, 1755, 1756, 1759, 1760, 1761, 1762, 1763, 1764, 1767, 1768, 1770, 1771, 1772, 1773, 1809, 1840, 1841, 1842, 1843, 1844, 1845, 1846, 1847, 1848, 1849, 1850, 1851, 1852, 1853, 1854, 1855, 1856, 1857, 1858, 1859, 1860, 1861, 1862, 1863, 1864, 1865, 1866, 1958, 1959, 1960, 1961, 1962, 1963, 1964, 1965, 1966, 1967, 1968, 2027, 2028, 2029, 2030, 2031, 2032, 2033, 2034, 2035, 2070, 2071, 2072, 2073, 2075, 2076, 2077, 2078, 2079, 2080, 2081, 2082, 2083, 2085, 2086, 2087, 2089, 2090, 2091, 2092, 2093, 2137, 2138, 2139, 2275, 2276, 2277, 2278, 2279, 2280, 2281, 2282, 2283, 2284, 2285, 2286, 2287, 2288, 2289, 2290, 2291, 2292, 2293, 2294, 2295, 2296, 2297, 2298, 2299, 2300, 2301, 2302, 2303, 2304, 2305, 2306, 2307, 2362, 2363, 2364, 2366, 2367, 2368, 2369, 2370, 2371, 2372, 2373, 2374, 2375, 2376, 2377, 2378, 2379, 2380, 2381, 2382, 2383, 2385, 2386, 2387, 2388, 2389, 2390, 2391, 2402, 2403, 2433, 2434, 2435, 2492, 2494, 2495, 2496, 2497, 2498, 2499, 2500, 2503, 2504, 2507, 2508, 2509, 2519, 2530, 2531, 2561, 2562, 2563, 2620, 2622, 2623, 2624, 2625, 2626, 2631, 2632, 2635, 2636, 2637, 2641, 2672, 2673, 2677, 2689, 2690, 2691, 2748, 2750, 2751, 2752, 2753, 2754, 2755, 2756, 2757, 2759, 2760, 2761, 2763, 2764, 2765, 2786, 2787, 2817, 2818, 2819, 2876, 2878, 2879, 2880, 2881, 2882, 2883, 2884, 2887, 2888, 2891, 2892, 2893, 2902, 2903, 2914, 2915, 2946, 3006, 3007, 3008, 3009, 3010, 3014, 3015, 3016, 3018, 3019, 3020, 3021, 3031, 3072, 3073, 3074, 3075, 3134, 3135, 3136, 3137, 3138, 3139, 3140, 3142, 3143, 3144, 3146, 3147, 3148, 3149, 3157, 3158, 3170, 3171, 3201, 3202, 3203, 3260, 3262, 3263, 3264, 3265, 3266, 3267, 3268, 3270, 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917845, 917846, 917847, 917848, 917849, 917850, 917851, 917852, 917853, 917854, 917855, 917856, 917857, 917858, 917859, 917860, 917861, 917862, 917863, 917864, 917865, 917866, 917867, 917868, 917869, 917870, 917871, 917872, 917873, 917874, 917875, 917876, 917877, 917878, 917879, 917880, 917881, 917882, 917883, 917884, 917885, 917886, 917887, 917888, 917889, 917890, 917891, 917892, 917893, 917894, 917895, 917896, 917897, 917898, 917899, 917900, 917901, 917902, 917903, 917904, 917905, 917906, 917907, 917908, 917909, 917910, 917911, 917912, 917913, 917914, 917915, 917916, 917917, 917918, 917919, 917920, 917921, 917922, 917923, 917924, 917925, 917926, 917927, 917928, 917929, 917930, 917931, 917932, 917933, 917934, 917935, 917936, 917937, 917938, 917939, 917940, 917941, 917942, 917943, 917944, 917945, 917946, 917947, 917948, 917949, 917950, 917951, 917952, 917953, 917954, 917955, 917956, 917957, 917958, 917959, 917960, 917961, 917962, 917963, 917964, 917965, 917966, 917967, 917968, 917969, 917970, 917971, 917972, 917973, 917974, 917975, 917976, 917977, 917978, 917979, 917980, 917981, 917982, 917983, 917984, 917985, 917986, 917987, 917988, 917989, 917990, 917991, 917992, 917993, 917994, 917995, 917996, 917997, 917998, 917999];\n","// GFM table, non-standard\n\n'use strict';\n\n\nfunction getLine(state, line) {\n var pos = state.bMarks[line] + state.blkIndent,\n max = state.eMarks[line];\n\n return state.src.substr(pos, max - pos);\n}\n\nfunction escapedSplit(str) {\n var result = [],\n pos = 0,\n max = str.length,\n ch,\n escapes = 0,\n lastPos = 0,\n backTicked = false,\n lastBackTick = 0;\n\n ch = str.charCodeAt(pos);\n\n while (pos < max) {\n if (ch === 0x60/* ` */ && (escapes % 2 === 0)) {\n backTicked = !backTicked;\n lastBackTick = pos;\n } else if (ch === 0x7c/* | */ && (escapes % 2 === 0) && !backTicked) {\n result.push(str.substring(lastPos, pos));\n lastPos = pos + 1;\n } else if (ch === 0x5c/* \\ */) {\n escapes++;\n } else {\n escapes = 0;\n }\n\n pos++;\n\n // If there was an un-closed backtick, go back to just after\n // the last backtick, but as if it was a normal character\n if (pos === max && backTicked) {\n backTicked = false;\n pos = lastBackTick + 1;\n }\n\n ch = str.charCodeAt(pos);\n }\n\n result.push(str.substring(lastPos));\n\n return result;\n}\n\n\nmodule.exports = function table(state, startLine, endLine, silent) {\n var ch, lineText, pos, i, nextLine, columns, columnCount, token,\n aligns, t, tableLines, tbodyLines;\n\n // should have at least three lines\n if (startLine + 2 > endLine) { return false; }\n\n nextLine = startLine + 1;\n\n if (state.sCount[nextLine] < state.blkIndent) { return false; }\n\n // first character of the second line should be '|' or '-'\n\n pos = state.bMarks[nextLine] + state.tShift[nextLine];\n if (pos >= state.eMarks[nextLine]) { return false; }\n\n ch = state.src.charCodeAt(pos);\n if (ch !== 0x7C/* | */ && ch !== 0x2D/* - */ && ch !== 0x3A/* : */) { return false; }\n\n lineText = getLine(state, startLine + 1);\n if (!/^[-:| ]+$/.test(lineText)) { return false; }\n\n columns = lineText.split('|');\n aligns = [];\n for (i = 0; i < columns.length; i++) {\n t = columns[i].trim();\n if (!t) {\n // allow empty columns before and after table, but not in between columns;\n // e.g. allow ` |---| `, disallow ` ---||--- `\n if (i === 0 || i === columns.length - 1) {\n continue;\n } else {\n return false;\n }\n }\n\n if (!/^:?-+:?$/.test(t)) { return false; }\n if (t.charCodeAt(t.length - 1) === 0x3A/* : */) {\n aligns.push(t.charCodeAt(0) === 0x3A/* : */ ? 'center' : 'right');\n } else if (t.charCodeAt(0) === 0x3A/* : */) {\n aligns.push('left');\n } else {\n aligns.push('');\n }\n }\n\n lineText = getLine(state, startLine).trim();\n if (lineText.indexOf('|') === -1) { return false; }\n columns = escapedSplit(lineText.replace(/^\\||\\|$/g, ''));\n\n // header row will define an amount of columns in the entire table,\n // and align row shouldn't be smaller than that (the rest of the rows can)\n columnCount = columns.length;\n if (columnCount > aligns.length) { return false; }\n\n if (silent) { return true; }\n\n token = state.push('table_open', 'table', 1);\n token.map = tableLines = [ startLine, 0 ];\n\n token = state.push('thead_open', 'thead', 1);\n token.map = [ startLine, startLine + 1 ];\n\n token = state.push('tr_open', 'tr', 1);\n token.map = [ startLine, startLine + 1 ];\n\n for (i = 0; i < columns.length; i++) {\n token = state.push('th_open', 'th', 1);\n token.map = [ startLine, startLine + 1 ];\n if (aligns[i]) {\n token.attrs = [ [ 'style', 'text-align:' + aligns[i] ] ];\n }\n\n token = state.push('inline', '', 0);\n token.content = columns[i].trim();\n token.map = [ startLine, startLine + 1 ];\n token.children = [];\n\n token = state.push('th_close', 'th', -1);\n }\n\n token = state.push('tr_close', 'tr', -1);\n token = state.push('thead_close', 'thead', -1);\n\n token = state.push('tbody_open', 'tbody', 1);\n token.map = tbodyLines = [ startLine + 2, 0 ];\n\n for (nextLine = startLine + 2; nextLine < endLine; nextLine++) {\n if (state.sCount[nextLine] < state.blkIndent) { break; }\n\n lineText = getLine(state, nextLine);\n if (lineText.indexOf('|') === -1) { break; }\n\n // keep spaces at beginning of line to indicate an empty first cell, but\n // strip trailing whitespace\n columns = escapedSplit(lineText.replace(/^\\||\\|\\s*$/g, ''));\n\n token = state.push('tr_open', 'tr', 1);\n for (i = 0; i < columnCount; i++) {\n token = state.push('td_open', 'td', 1);\n if (aligns[i]) {\n token.attrs = [ [ 'style', 'text-align:' + aligns[i] ] ];\n }\n\n token = state.push('inline', '', 0);\n token.content = columns[i] ? columns[i].trim() : '';\n token.children = [];\n\n token = state.push('td_close', 'td', -1);\n }\n token = state.push('tr_close', 'tr', -1);\n }\n token = state.push('tbody_close', 'tbody', -1);\n token = state.push('table_close', 'table', -1);\n\n tableLines[1] = tbodyLines[1] = nextLine;\n state.line = nextLine;\n return true;\n};\n","/* eslint no-constant-condition:0 */\nvar fontMetrics = require(\"./fontMetrics\");\nvar parseData = require(\"./parseData\");\nvar ParseError = require(\"./ParseError\");\n\nvar ParseNode = parseData.ParseNode;\n\n/**\n * Parse the body of the environment, with rows delimited by \\\\ and\n * columns delimited by &, and create a nested list in row-major order\n * with one group per cell.\n */\nfunction parseArray(parser, result) {\n var row = [];\n var body = [row];\n var rowGaps = [];\n while (true) {\n var cell = parser.parseExpression(false, null);\n row.push(new ParseNode(\"ordgroup\", cell, parser.mode));\n var next = parser.nextToken.text;\n if (next === \"&\") {\n parser.consume();\n } else if (next === \"\\\\end\") {\n break;\n } else if (next === \"\\\\\\\\\" || next === \"\\\\cr\") {\n var cr = parser.parseFunction();\n rowGaps.push(cr.value.size);\n row = [];\n body.push(row);\n } else {\n // TODO: Clean up the following hack once #385 got merged\n var pos = Math.min(parser.pos + 1, parser.lexer._input.length);\n throw new ParseError(\"Expected & or \\\\\\\\ or \\\\end\",\n parser.lexer, pos);\n }\n }\n result.body = body;\n result.rowGaps = rowGaps;\n return new ParseNode(result.type, result, parser.mode);\n}\n\n/*\n * An environment definition is very similar to a function definition:\n * it is declared with a name or a list of names, a set of properties\n * and a handler containing the actual implementation.\n *\n * The properties include:\n * - numArgs: The number of arguments after the \\begin{name} function.\n * - argTypes: (optional) Just like for a function\n * - allowedInText: (optional) Whether or not the environment is allowed inside\n * text mode (default false) (not enforced yet)\n * - numOptionalArgs: (optional) Just like for a function\n * A bare number instead of that object indicates the numArgs value.\n *\n * The handler function will receive two arguments\n * - context: information and references provided by the parser\n * - args: an array of arguments passed to \\begin{name}\n * The context contains the following properties:\n * - envName: the name of the environment, one of the listed names.\n * - parser: the parser object\n * - lexer: the lexer object\n * - positions: the positions associated with these arguments from args.\n * The handler must return a ParseResult.\n */\n\nfunction defineEnvironment(names, props, handler) {\n if (typeof names === \"string\") {\n names = [names];\n }\n if (typeof props === \"number\") {\n props = { numArgs: props };\n }\n // Set default values of environments\n var data = {\n numArgs: props.numArgs || 0,\n argTypes: props.argTypes,\n greediness: 1,\n allowedInText: !!props.allowedInText,\n numOptionalArgs: props.numOptionalArgs || 0,\n handler: handler,\n };\n for (var i = 0; i < names.length; ++i) {\n module.exports[names[i]] = data;\n }\n}\n\n// Arrays are part of LaTeX, defined in lttab.dtx so its documentation\n// is part of the source2e.pdf file of LaTeX2e source documentation.\ndefineEnvironment(\"array\", {\n numArgs: 1,\n}, function(context, args) {\n var colalign = args[0];\n colalign = colalign.value.map ? colalign.value : [colalign];\n var cols = colalign.map(function(node) {\n var ca = node.value;\n if (\"lcr\".indexOf(ca) !== -1) {\n return {\n type: \"align\",\n align: ca,\n };\n } else if (ca === \"|\") {\n return {\n type: \"separator\",\n separator: \"|\",\n };\n }\n throw new ParseError(\n \"Unknown column alignment: \" + node.value,\n context.lexer, context.positions[1]);\n });\n var res = {\n type: \"array\",\n cols: cols,\n hskipBeforeAndAfter: true, // \\@preamble in lttab.dtx\n };\n res = parseArray(context.parser, res);\n return res;\n});\n\n// The matrix environments of amsmath builds on the array environment\n// of LaTeX, which is discussed above.\ndefineEnvironment([\n \"matrix\",\n \"pmatrix\",\n \"bmatrix\",\n \"Bmatrix\",\n \"vmatrix\",\n \"Vmatrix\",\n], {\n}, function(context) {\n var delimiters = {\n \"matrix\": null,\n \"pmatrix\": [\"(\", \")\"],\n \"bmatrix\": [\"[\", \"]\"],\n \"Bmatrix\": [\"\\\\{\", \"\\\\}\"],\n \"vmatrix\": [\"|\", \"|\"],\n \"Vmatrix\": [\"\\\\Vert\", \"\\\\Vert\"],\n }[context.envName];\n var res = {\n type: \"array\",\n hskipBeforeAndAfter: false, // \\hskip -\\arraycolsep in amsmath\n };\n res = parseArray(context.parser, res);\n if (delimiters) {\n res = new ParseNode(\"leftright\", {\n body: [res],\n left: delimiters[0],\n right: delimiters[1],\n }, context.mode);\n }\n return res;\n});\n\n// A cases environment (in amsmath.sty) is almost equivalent to\n// \\def\\arraystretch{1.2}%\n// \\left\\{\\begin{array}{@{}l@{\\quad}l@{}} … \\end{array}\\right.\ndefineEnvironment(\"cases\", {\n}, function(context) {\n var res = {\n type: \"array\",\n arraystretch: 1.2,\n cols: [{\n type: \"align\",\n align: \"l\",\n pregap: 0,\n postgap: fontMetrics.metrics.quad,\n }, {\n type: \"align\",\n align: \"l\",\n pregap: 0,\n postgap: 0,\n }],\n };\n res = parseArray(context.parser, res);\n res = new ParseNode(\"leftright\", {\n body: [res],\n left: \"\\\\{\",\n right: \".\",\n }, context.mode);\n return res;\n});\n\n// An aligned environment is like the align* environment\n// except it operates within math mode.\n// Note that we assume \\nomallineskiplimit to be zero,\n// so that \\strut@ is the same as \\strut.\ndefineEnvironment(\"aligned\", {\n}, function(context) {\n var res = {\n type: \"array\",\n cols: [],\n };\n res = parseArray(context.parser, res);\n var emptyGroup = new ParseNode(\"ordgroup\", [], context.mode);\n var numCols = 0;\n res.value.body.forEach(function(row) {\n var i;\n for (i = 1; i < row.length; i += 2) {\n row[i].value.unshift(emptyGroup);\n }\n if (numCols < row.length) {\n numCols = row.length;\n }\n });\n for (var i = 0; i < numCols; ++i) {\n var align = \"r\";\n var pregap = 0;\n if (i % 2 === 1) {\n align = \"l\";\n } else if (i > 0) {\n pregap = 2; // one \\qquad between columns\n }\n res.value.cols[i] = {\n type: \"align\",\n align: align,\n pregap: pregap,\n postgap: 0,\n };\n }\n return res;\n});\n","// Parser state class\n\n'use strict';\n\nvar Token = require('../token');\nvar isSpace = require('../common/utils').isSpace;\n\n\nfunction StateBlock(src, md, env, tokens) {\n var ch, s, start, pos, len, indent, offset, indent_found;\n\n this.src = src;\n\n // link to parser instance\n this.md = md;\n\n this.env = env;\n\n //\n // Internal state vartiables\n //\n\n this.tokens = tokens;\n\n this.bMarks = []; // line begin offsets for fast jumps\n this.eMarks = []; // line end offsets for fast jumps\n this.tShift = []; // offsets of the first non-space characters (tabs not expanded)\n this.sCount = []; // indents for each line (tabs expanded)\n\n // block parser variables\n this.blkIndent = 0; // required block content indent\n // (for example, if we are in list)\n this.line = 0; // line index in src\n this.lineMax = 0; // lines count\n this.tight = false; // loose/tight mode for lists\n this.parentType = 'root'; // if `list`, block parser stops on two newlines\n this.ddIndent = -1; // indent of the current dd block (-1 if there isn't any)\n\n this.level = 0;\n\n // renderer\n this.result = '';\n\n // Create caches\n // Generate markers.\n s = this.src;\n indent_found = false;\n\n for (start = pos = indent = offset = 0, len = s.length; pos < len; pos++) {\n ch = s.charCodeAt(pos);\n\n if (!indent_found) {\n if (isSpace(ch)) {\n indent++;\n\n if (ch === 0x09) {\n offset += 4 - offset % 4;\n } else {\n offset++;\n }\n continue;\n } else {\n indent_found = true;\n }\n }\n\n if (ch === 0x0A || pos === len - 1) {\n if (ch !== 0x0A) { pos++; }\n this.bMarks.push(start);\n this.eMarks.push(pos);\n this.tShift.push(indent);\n this.sCount.push(offset);\n\n indent_found = false;\n indent = 0;\n offset = 0;\n start = pos + 1;\n }\n }\n\n // Push fake entry to simplify cache bounds checks\n this.bMarks.push(s.length);\n this.eMarks.push(s.length);\n this.tShift.push(0);\n this.sCount.push(0);\n\n this.lineMax = this.bMarks.length - 1; // don't count last fake line\n}\n\n// Push new token to \"stream\".\n//\nStateBlock.prototype.push = function (type, tag, nesting) {\n var token = new Token(type, tag, nesting);\n token.block = true;\n\n if (nesting < 0) { this.level--; }\n token.level = this.level;\n if (nesting > 0) { this.level++; }\n\n this.tokens.push(token);\n return token;\n};\n\nStateBlock.prototype.isEmpty = function isEmpty(line) {\n return this.bMarks[line] + this.tShift[line] >= this.eMarks[line];\n};\n\nStateBlock.prototype.skipEmptyLines = function skipEmptyLines(from) {\n for (var max = this.lineMax; from < max; from++) {\n if (this.bMarks[from] + this.tShift[from] < this.eMarks[from]) {\n break;\n }\n }\n return from;\n};\n\n// Skip spaces from given position.\nStateBlock.prototype.skipSpaces = function skipSpaces(pos) {\n var ch;\n\n for (var max = this.src.length; pos < max; pos++) {\n ch = this.src.charCodeAt(pos);\n if (!isSpace(ch)) { break; }\n }\n return pos;\n};\n\n// Skip spaces from given position in reverse.\nStateBlock.prototype.skipSpacesBack = function skipSpacesBack(pos, min) {\n if (pos <= min) { return pos; }\n\n while (pos > min) {\n if (!isSpace(this.src.charCodeAt(--pos))) { return pos + 1; }\n }\n return pos;\n};\n\n// Skip char codes from given position\nStateBlock.prototype.skipChars = function skipChars(pos, code) {\n for (var max = this.src.length; pos < max; pos++) {\n if (this.src.charCodeAt(pos) !== code) { break; }\n }\n return pos;\n};\n\n// Skip char codes reverse from given position - 1\nStateBlock.prototype.skipCharsBack = function skipCharsBack(pos, code, min) {\n if (pos <= min) { return pos; }\n\n while (pos > min) {\n if (code !== this.src.charCodeAt(--pos)) { return pos + 1; }\n }\n return pos;\n};\n\n// cut lines range from source.\nStateBlock.prototype.getLines = function getLines(begin, end, indent, keepLastLF) {\n var i, lineIndent, ch, first, last, queue, lineStart,\n line = begin;\n\n if (begin >= end) {\n return '';\n }\n\n queue = new Array(end - begin);\n\n for (i = 0; line < end; line++, i++) {\n lineIndent = 0;\n lineStart = first = this.bMarks[line];\n\n if (line + 1 < end || keepLastLF) {\n // No need for bounds check because we have fake entry on tail.\n last = this.eMarks[line] + 1;\n } else {\n last = this.eMarks[line];\n }\n\n while (first < last && lineIndent < indent) {\n ch = this.src.charCodeAt(first);\n\n if (isSpace(ch)) {\n if (ch === 0x09) {\n lineIndent += 4 - lineIndent % 4;\n } else {\n lineIndent++;\n }\n } else if (first - lineStart < this.tShift[line]) {\n // patched tShift masked characters to look like spaces (blockquotes, list markers)\n lineIndent++;\n } else {\n break;\n }\n\n first++;\n }\n\n queue[i] = this.src.slice(first, last);\n }\n\n return queue.join('');\n};\n\n// re-export Token class to use in block rules\nStateBlock.prototype.Token = Token;\n\n\nmodule.exports = StateBlock;\n","// For each opening emphasis-like marker find a matching closing one\n//\n'use strict';\n\n\nmodule.exports = function link_pairs(state) {\n var i, j, lastDelim, currDelim,\n delimiters = state.delimiters,\n max = state.delimiters.length;\n\n for (i = 0; i < max; i++) {\n lastDelim = delimiters[i];\n\n if (!lastDelim.close) { continue; }\n\n j = i - lastDelim.jump - 1;\n\n while (j >= 0) {\n currDelim = delimiters[j];\n\n if (currDelim.open &&\n currDelim.marker === lastDelim.marker &&\n currDelim.end < 0 &&\n currDelim.level === lastDelim.level) {\n\n lastDelim.jump = i - j;\n lastDelim.open = false;\n currDelim.end = i;\n currDelim.jump = 0;\n break;\n }\n\n j -= currDelim.jump + 1;\n }\n }\n};\n","var dP = require('./_object-dp');\nvar anObject = require('./_an-object');\nvar getKeys = require('./_object-keys');\n\nmodule.exports = require('./_descriptors') ? Object.defineProperties : function defineProperties(O, Properties) {\n anObject(O);\n var keys = getKeys(Properties);\n var length = keys.length;\n var i = 0;\n var P;\n while (length > i) dP.f(O, P = keys[i++], Properties[P]);\n return O;\n};\n","module.exports = {};\n","// markdown-it default options\n\n'use strict';\n\n\nmodule.exports = {\n options: {\n html: false, // Enable HTML tags in source\n xhtmlOut: false, // Use '/' to close single tags ( )\n breaks: false, // Convert '\\n' in paragraphs into \n langPrefix: 'language-', // CSS language prefix for fenced blocks\n linkify: false, // autoconvert URL-like texts to links\n\n // Enable some language-neutral replacements + quotes beautification\n typographer: false,\n\n // Double + single quotes replacement pairs, when typographer enabled,\n // and smartquotes on. Could be either a String or an Array.\n //\n // For example, you can use '«»„“' for Russian, '„“‚‘' for German,\n // and ['«\\xA0', '\\xA0»', '‹\\xA0', '\\xA0›'] for French (including nbsp).\n quotes: '\\u201c\\u201d\\u2018\\u2019', /* “”‘’ */\n\n // Highlighter function. Should return escaped HTML,\n // or '' if the source string is not changed and should be escaped externaly.\n // If result starts with 0 ? this.hoaId : this.VendorHoaID\r\n }).then(({ list }) => {\r\n if (list) {\r\n if (this.isDebug === true) console.debug('accountManagingUsers=' + JSON.stringify(list))\r\n this.accountManagingUserList = list.filter(\r\n f =>\r\n f.accountManagingUser &&\r\n f.accountManagingUser.identityInformation &&\r\n f.accountManagingUser.identityInformation.name &&\r\n f.accountManagingUser.identityInformation.name !== ''\r\n )\r\n\r\n this.accountManagingUserListCopy = this.accountManagingUserList\r\n }\r\n })\r\n },\r\n\r\n filterList() {\r\n if (this.isDebug === true) console.debug('in filterList...')\r\n if (this.filterBy && this.accountManagingUserList) {\r\n if (this.filterBy.length === 0) {\r\n this.accountManagingUserList = this.accountManagingUserListCopy\r\n } else {\r\n this.accountManagingUserList = this.accountManagingUserList.filter(\r\n f =>\r\n f.accountManagingUser.identityInformation.name.indexOf(this.filterBy) !== -1 ||\r\n f.accountManagingUser.identityInformation.email.indexOf(this.filterBy) !== -1\r\n )\r\n }\r\n } else {\r\n this.accountManagingUserList = this.accountManagingUserListCopy\r\n }\r\n },\r\n\r\n open() {\r\n this.isOpen = true\r\n this.loading = false\r\n },\r\n\r\n async processSubmit() {\r\n if (!this.checkedRows || this.checkedRows == undefined || this.checkedRows.length === 0) {\r\n notifyError('At least one account manager is required.')\r\n return\r\n }\r\n\r\n Array.from(this.checkedRows).forEach(element => {\r\n if (element) {\r\n if (this.isDebug === true) console.debug('element' + JSON.stringify(element))\r\n\r\n if (\r\n typeof accountManagingUserID !== 'number' &&\r\n element.accountManagingUserID &&\r\n element.accountManagingUserID != undefined\r\n ) {\r\n this.accountManagingUserIds.push(element.accountManagingUserID)\r\n\r\n if (\r\n element.accountManagingUser.identityInformation &&\r\n element.accountManagingUser.identityInformation.name\r\n ) {\r\n this.accountManagingUserIdsJson.push({\r\n name: element.accountManagingUser.identityInformation.name,\r\n accountManagingUserId: element.accountManagingUserID\r\n })\r\n }\r\n }\r\n }\r\n })\r\n\r\n if (this.isDebug === true)\r\n console.debug('ownerIds=' + JSON.stringify(this.accountManagingUserIds))\r\n\r\n this.$store.dispatch('conversation/saveAccountManagerIDs', {\r\n accountManagerIds: this.accountManagingUserIds,\r\n accountManagerIdsJson: this.accountManagingUserIdsJson\r\n })\r\n\r\n this.closeModal()\r\n },\r\n\r\n closeModal() {\r\n // auto-close modal\r\n this.$emit('update:toggle', (this.toggleManagement = false))\r\n $('#clickclose').click()\r\n }\r\n}\r\n","\r\n
\r\n \r\n \r\n \r\n \r\n \r\n \r\n\r\n\r\n\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!./index.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!./index.vue?vue&type=script&lang=js&\"","import { render, staticRenderFns } from \"./index.vue?vue&type=template&id=5b1c6026&\"\nimport script from \"./index.vue?vue&type=script&lang=js&\"\nexport * from \"./index.vue?vue&type=script&lang=js&\"\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 null,\n null\n \n)\n\nexport default component.exports","'use strict';\n\n\nmodule.exports.encode = require('./encode');\nmodule.exports.decode = require('./decode');\nmodule.exports.format = require('./format');\nmodule.exports.parse = require('./parse');\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'use strict';\n\n//\n// Changes from joyent/node:\n//\n// 1. No leading slash in paths,\n// e.g. in `url.parse('http://foo?bar')` pathname is ``, not `/`\n//\n// 2. Backslashes are not replaced with slashes,\n// so `http:\\\\example.org\\` is treated like a relative path\n//\n// 3. Trailing colon is treated like a part of the path,\n// i.e. in `http://example.org:foo` pathname is `:foo`\n//\n// 4. Nothing is URL-encoded in the resulting object,\n// (in joyent/node some chars in auth and paths are encoded)\n//\n// 5. `url.parse()` does not have `parseQueryString` argument\n//\n// 6. Removed extraneous result properties: `host`, `path`, `query`, etc.,\n// which can be constructed using other parts of the url.\n//\n\n\nfunction Url() {\n this.protocol = null;\n this.slashes = null;\n this.auth = null;\n this.port = null;\n this.hostname = null;\n this.hash = null;\n this.search = null;\n this.pathname = null;\n}\n\n// Reference: RFC 3986, RFC 1808, RFC 2396\n\n// define these here so at least they only have to be\n// compiled once on the first module load.\nvar protocolPattern = /^([a-z0-9.+-]+:)/i,\n portPattern = /:[0-9]*$/,\n\n // Special case for a simple path URL\n simplePathPattern = /^(\\/\\/?(?!\\/)[^\\?\\s]*)(\\?[^\\s]*)?$/,\n\n // RFC 2396: characters reserved for delimiting URLs.\n // We actually just auto-escape these.\n delims = [ '<', '>', '\"', '`', ' ', '\\r', '\\n', '\\t' ],\n\n // RFC 2396: characters not allowed for various reasons.\n unwise = [ '{', '}', '|', '\\\\', '^', '`' ].concat(delims),\n\n // Allowed by RFCs, but cause of XSS attacks. Always escape these.\n autoEscape = [ '\\'' ].concat(unwise),\n // Characters that are never ever allowed in a hostname.\n // Note that any invalid chars are also handled, but these\n // are the ones that are *expected* to be seen, so we fast-path\n // them.\n nonHostChars = [ '%', '/', '?', ';', '#' ].concat(autoEscape),\n hostEndingChars = [ '/', '?', '#' ],\n hostnameMaxLen = 255,\n hostnamePartPattern = /^[+a-z0-9A-Z_-]{0,63}$/,\n hostnamePartStart = /^([+a-z0-9A-Z_-]{0,63})(.*)$/,\n // protocols that can allow \"unsafe\" and \"unwise\" chars.\n /* eslint-disable no-script-url */\n // protocols that never have a hostname.\n hostlessProtocol = {\n 'javascript': true,\n 'javascript:': true\n },\n // protocols that always contain a // bit.\n slashedProtocol = {\n 'http': true,\n 'https': true,\n 'ftp': true,\n 'gopher': true,\n 'file': true,\n 'http:': true,\n 'https:': true,\n 'ftp:': true,\n 'gopher:': true,\n 'file:': true\n };\n /* eslint-enable no-script-url */\n\nfunction urlParse(url, slashesDenoteHost) {\n if (url && url instanceof Url) { return url; }\n\n var u = new Url();\n u.parse(url, slashesDenoteHost);\n return u;\n}\n\nUrl.prototype.parse = function(url, slashesDenoteHost) {\n var i, l, lowerProto, hec, slashes,\n rest = url;\n\n // trim before proceeding.\n // This is to support parse stuff like \" http://foo.com \\n\"\n rest = rest.trim();\n\n if (!slashesDenoteHost && url.split('#').length === 1) {\n // Try fast path regexp\n var simplePath = simplePathPattern.exec(rest);\n if (simplePath) {\n this.pathname = simplePath[1];\n if (simplePath[2]) {\n this.search = simplePath[2];\n }\n return this;\n }\n }\n\n var proto = protocolPattern.exec(rest);\n if (proto) {\n proto = proto[0];\n lowerProto = proto.toLowerCase();\n this.protocol = proto;\n rest = rest.substr(proto.length);\n }\n\n // figure out if it's got a host\n // user@server is *always* interpreted as a hostname, and url\n // resolution will treat //foo/bar as host=foo,path=bar because that's\n // how the browser resolves relative URLs.\n if (slashesDenoteHost || proto || rest.match(/^\\/\\/[^@\\/]+@[^@\\/]+/)) {\n slashes = rest.substr(0, 2) === '//';\n if (slashes && !(proto && hostlessProtocol[proto])) {\n rest = rest.substr(2);\n this.slashes = true;\n }\n }\n\n if (!hostlessProtocol[proto] &&\n (slashes || (proto && !slashedProtocol[proto]))) {\n\n // there's a hostname.\n // the first instance of /, ?, ;, or # ends the host.\n //\n // If there is an @ in the hostname, then non-host chars *are* allowed\n // to the left of the last @ sign, unless some host-ending character\n // comes *before* the @-sign.\n // URLs are obnoxious.\n //\n // ex:\n // http://a@b@c/ => user:a@b host:c\n // http://a@b?@c => user:a host:c path:/?@c\n\n // v0.12 TODO(isaacs): This is not quite how Chrome does things.\n // Review our test case against browsers more comprehensively.\n\n // find the first instance of any hostEndingChars\n var hostEnd = -1;\n for (i = 0; i < hostEndingChars.length; i++) {\n hec = rest.indexOf(hostEndingChars[i]);\n if (hec !== -1 && (hostEnd === -1 || hec < hostEnd)) {\n hostEnd = hec;\n }\n }\n\n // at this point, either we have an explicit point where the\n // auth portion cannot go past, or the last @ char is the decider.\n var auth, atSign;\n if (hostEnd === -1) {\n // atSign can be anywhere.\n atSign = rest.lastIndexOf('@');\n } else {\n // atSign must be in auth portion.\n // http://a@b/c@d => host:b auth:a path:/c@d\n atSign = rest.lastIndexOf('@', hostEnd);\n }\n\n // Now we have a portion which is definitely the auth.\n // Pull that off.\n if (atSign !== -1) {\n auth = rest.slice(0, atSign);\n rest = rest.slice(atSign + 1);\n this.auth = auth;\n }\n\n // the host is the remaining to the left of the first non-host char\n hostEnd = -1;\n for (i = 0; i < nonHostChars.length; i++) {\n hec = rest.indexOf(nonHostChars[i]);\n if (hec !== -1 && (hostEnd === -1 || hec < hostEnd)) {\n hostEnd = hec;\n }\n }\n // if we still have not hit it, then the entire thing is a host.\n if (hostEnd === -1) {\n hostEnd = rest.length;\n }\n\n if (rest[hostEnd - 1] === ':') { hostEnd--; }\n var host = rest.slice(0, hostEnd);\n rest = rest.slice(hostEnd);\n\n // pull out port.\n this.parseHost(host);\n\n // we've indicated that there is a hostname,\n // so even if it's empty, it has to be present.\n this.hostname = this.hostname || '';\n\n // if hostname begins with [ and ends with ]\n // assume that it's an IPv6 address.\n var ipv6Hostname = this.hostname[0] === '[' &&\n this.hostname[this.hostname.length - 1] === ']';\n\n // validate a little.\n if (!ipv6Hostname) {\n var hostparts = this.hostname.split(/\\./);\n for (i = 0, l = hostparts.length; i < l; i++) {\n var part = hostparts[i];\n if (!part) { continue; }\n if (!part.match(hostnamePartPattern)) {\n var newpart = '';\n for (var j = 0, k = part.length; j < k; j++) {\n if (part.charCodeAt(j) > 127) {\n // we replace non-ASCII char with a temporary placeholder\n // we need this to make sure size of hostname is not\n // broken by replacing non-ASCII by nothing\n newpart += 'x';\n } else {\n newpart += part[j];\n }\n }\n // we test again with ASCII char only\n if (!newpart.match(hostnamePartPattern)) {\n var validParts = hostparts.slice(0, i);\n var notHost = hostparts.slice(i + 1);\n var bit = part.match(hostnamePartStart);\n if (bit) {\n validParts.push(bit[1]);\n notHost.unshift(bit[2]);\n }\n if (notHost.length) {\n rest = notHost.join('.') + rest;\n }\n this.hostname = validParts.join('.');\n break;\n }\n }\n }\n }\n\n if (this.hostname.length > hostnameMaxLen) {\n this.hostname = '';\n }\n\n // strip [ and ] from the hostname\n // the host field still retains them, though\n if (ipv6Hostname) {\n this.hostname = this.hostname.substr(1, this.hostname.length - 2);\n }\n }\n\n // chop off from the tail first.\n var hash = rest.indexOf('#');\n if (hash !== -1) {\n // got a fragment string.\n this.hash = rest.substr(hash);\n rest = rest.slice(0, hash);\n }\n var qm = rest.indexOf('?');\n if (qm !== -1) {\n this.search = rest.substr(qm);\n rest = rest.slice(0, qm);\n }\n if (rest) { this.pathname = rest; }\n if (slashedProtocol[lowerProto] &&\n this.hostname && !this.pathname) {\n this.pathname = '';\n }\n\n return this;\n};\n\nUrl.prototype.parseHost = function(host) {\n var port = portPattern.exec(host);\n if (port) {\n port = port[0];\n if (port !== ':') {\n this.port = port.substr(1);\n }\n host = host.substr(0, host.length - port.length);\n }\n if (host) { this.hostname = host; }\n};\n\nmodule.exports = urlParse;\n","module.exports = __webpack_public_path__ + \"img/fill-1-copy-11.4a777982.svg\";","var render = function () {var _vm=this;var _h=_vm.$createElement;var _c=_vm._self._c||_h;return _c('div',{attrs:{\"message-modal\":\"\"}},[(_vm.orderedHomeowners)?_c('div',{staticClass:\"pb-1 is-size-4\"},[_vm._v(\" Home Owner \")]):_vm._e(),_c('div',{staticClass:\"columns box is-12\"},[_c('div',{staticClass:\"box list-content column is-12\"},[_c('b-field',{attrs:{\"label\":\"Search\"}},[_c('b-input',{on:{\"input\":_vm.filterList},model:{value:(_vm.filterBy),callback:function ($$v) {_vm.filterBy=$$v},expression:\"filterBy\"}})],1),_c('b-table',{style:({ maxHeight: '400px' }),attrs:{\"data\":_vm.orderedHomeowners,\"loading\":_vm.loading,\"striped\":true,\"sticky-header\":true,\"checked-rows\":_vm.checkedRows,\"checkable\":\"\",\"checkbox-position\":_vm.checkboxPosition},on:{\"update:checkedRows\":function($event){_vm.checkedRows=$event},\"update:checked-rows\":function($event){_vm.checkedRows=$event}}},[_c('template',{slot:\"empty\"},[(!_vm.loading)?_c('empty-list'):_vm._e()],1),_c('b-table-column',{attrs:{\"label\":\"User Email\",\"field\":\"email\",\"sortable\":\"\"},scopedSlots:_vm._u([{key:\"default\",fn:function(props){return [(props.row.email && props.row.email != undefined)?_c('span',[_vm._v(_vm._s(props.row.email || ''))]):_c('span',[_vm._v(\" \")])]}}])}),_c('b-table-column',{attrs:{\"label\":\"User Name\",\"field\":\"name\",\"sortable\":\"\"},scopedSlots:_vm._u([{key:\"default\",fn:function(props){return [(props.row.primaryOwner && props.row.primaryOwner != undefined)?_c('span',[_vm._v(_vm._s(props.row.primaryOwner.name || ''))]):_c('span',[_vm._v(\" \")])]}}])}),_c('b-table-column',{attrs:{\"label\":\"Property Address\",\"field\":\"address\",\"sortable\":\"\"},scopedSlots:_vm._u([{key:\"default\",fn:function(props){return [(props.row.address && props.row.address != undefined)?_c('span',[_vm._v(_vm._s(props.row.address || ''))]):_c('span',[_vm._v(\" \")])]}}])})],2)],1)]),_c('div',{staticClass:\"pt-5\"},[_c('button',{staticClass:\"button is-primary is-rounded\",attrs:{\"type\":\"button\",\"disabled\":_vm.loading},on:{\"click\":function($event){$event.preventDefault();return _vm.processSubmit.apply(null, arguments)}}},[_vm._v(\" Select \")])])])}\nvar staticRenderFns = []\n\nexport { render, staticRenderFns }","export function data() {\r\n return {\r\n isDebug: true,\r\n isOpen: false,\r\n loading: true,\r\n openOnFocus: true,\r\n homeownerList: [],\r\n homeownerListCopy: [],\r\n ownerIds: [],\r\n ownerIdsJson: [],\r\n checkboxPosition: 'left',\r\n checkedRows: [],\r\n toggleHomeowner: false,\r\n filterBy: ''\r\n }\r\n}\r\n","import { conversationList } from '@/services/Conversations/store'\r\nimport { notifyError } from '@/services/notify'\r\nimport $ from 'jquery'\r\n\r\nexport const methods = {\r\n async reload() {\r\n this.loading = true\r\n\r\n this.$store.dispatch('conversation/saveOwnerIDs', {\r\n ownerIds: []\r\n })\r\n\r\n this.getHomeowners()\r\n\r\n this.loading = false\r\n },\r\n\r\n async getHomeowners() {\r\n if (this.isDebug == true) console.debug('in getHomeowners()...')\r\n await conversationList\r\n .dispatch('loadHomeowners', {\r\n hoaID: this.hoaId && this.hoaId > 0 ? this.hoaId : this.VendorHoaID\r\n })\r\n .then(({ list }) => {\r\n if (list) {\r\n this.homeownerList = list\r\n this.homeownerListCopy = list\r\n }\r\n })\r\n },\r\n\r\n filterList() {\r\n if (this.isDebug === true) console.debug('in filterList...')\r\n if (this.filterBy && this.homeownerList) {\r\n if (this.filterBy.length === 0) {\r\n this.homeownerList = this.homeownerListCopy\r\n } else {\r\n this.homeownerList = this.homeownerList.filter(\r\n f =>\r\n f.primaryOwner.name.indexOf(this.filterBy) !== -1 ||\r\n f.email.indexOf(this.filterBy) !== -1\r\n )\r\n }\r\n } else {\r\n this.homeownerList = this.homeownerListCopy\r\n }\r\n },\r\n\r\n open() {\r\n this.ownerID = 0\r\n this.isOpen = true\r\n this.loading = false\r\n },\r\n\r\n async processSubmit() {\r\n if (!this.checkedRows || this.checkedRows == undefined || this.checkedRows.length === 0) {\r\n notifyError('At least one homeowner is required.')\r\n return\r\n }\r\n\r\n Array.from(this.checkedRows).forEach(element => {\r\n if (element) {\r\n if (this.isDebug === true) console.debug('element' + JSON.stringify(element))\r\n\r\n if (\r\n element.primaryOwner &&\r\n element.primaryOwner != undefined &&\r\n element.primaryOwner.ownerID\r\n ) {\r\n this.ownerIds.push(element.primaryOwner.ownerID)\r\n this.ownerIdsJson.push({\r\n name: element.primaryOwner.name,\r\n ownerID: element.primaryOwner.ownerID\r\n })\r\n }\r\n }\r\n })\r\n\r\n if (this.isDebug === true) console.debug('ownerIds=' + JSON.stringify(this.ownerIds))\r\n\r\n this.$store.dispatch('conversation/saveOwnerIDs', {\r\n ownerIds: this.ownerIds,\r\n ownerIdsJson: this.ownerIdsJson\r\n })\r\n\r\n this.closeModal()\r\n },\r\n\r\n closeModal() {\r\n // auto-close modal\r\n this.$emit('update:toggle', (this.toggleHomeowner = false))\r\n $('#clickclose').click()\r\n }\r\n}\r\n","\r\n
\r\n\r\n\r\n\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!./index.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!./index.vue?vue&type=script&lang=js&\"","import { render, staticRenderFns } from \"./index.vue?vue&type=template&id=2e298364&\"\nimport script from \"./index.vue?vue&type=script&lang=js&\"\nexport * from \"./index.vue?vue&type=script&lang=js&\"\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 null,\n null\n \n)\n\nexport default component.exports","// Parse link label\n//\n// this function assumes that first character (\"[\") already matches;\n// returns the end of the label\n//\n'use strict';\n\nmodule.exports = function parseLinkLabel(state, start, disableNested) {\n var level, found, marker, prevPos,\n labelEnd = -1,\n max = state.posMax,\n oldPos = state.pos;\n\n state.pos = start + 1;\n level = 1;\n\n while (state.pos < max) {\n marker = state.src.charCodeAt(state.pos);\n if (marker === 0x5D /* ] */) {\n level--;\n if (level === 0) {\n found = true;\n break;\n }\n }\n\n prevPos = state.pos;\n state.md.inline.skipToken(state);\n if (marker === 0x5B /* [ */) {\n if (prevPos === state.pos - 1) {\n // increase level if we find text `[`, which is not a part of any token\n level++;\n } else if (disableNested) {\n state.pos = oldPos;\n return -1;\n }\n }\n }\n\n if (found) {\n labelEnd = state.pos;\n }\n\n // restore old state\n state.pos = oldPos;\n\n return labelEnd;\n};\n","// List of valid html blocks names, accorting to commonmark spec\n// http://jgm.github.io/CommonMark/spec.html#html-blocks\n\n'use strict';\n\n\nmodule.exports = [\n 'address',\n 'article',\n 'aside',\n 'base',\n 'basefont',\n 'blockquote',\n 'body',\n 'caption',\n 'center',\n 'col',\n 'colgroup',\n 'dd',\n 'details',\n 'dialog',\n 'dir',\n 'div',\n 'dl',\n 'dt',\n 'fieldset',\n 'figcaption',\n 'figure',\n 'footer',\n 'form',\n 'frame',\n 'frameset',\n 'h1',\n 'head',\n 'header',\n 'hr',\n 'html',\n 'iframe',\n 'legend',\n 'li',\n 'link',\n 'main',\n 'menu',\n 'menuitem',\n 'meta',\n 'nav',\n 'noframes',\n 'ol',\n 'optgroup',\n 'option',\n 'p',\n 'param',\n 'pre',\n 'section',\n 'source',\n 'title',\n 'summary',\n 'table',\n 'tbody',\n 'td',\n 'tfoot',\n 'th',\n 'thead',\n 'title',\n 'tr',\n 'track',\n 'ul'\n];\n","var toString = {}.toString;\n\nmodule.exports = Array.isArray || function (arr) {\n return toString.call(arr) == '[object Array]';\n};\n","module.exports = true;\n","// Parse link destination\n//\n'use strict';\n\n\nvar isSpace = require('../common/utils').isSpace;\nvar unescapeAll = require('../common/utils').unescapeAll;\n\n\nmodule.exports = function parseLinkDestination(str, pos, max) {\n var code, level,\n lines = 0,\n start = pos,\n result = {\n ok: false,\n pos: 0,\n lines: 0,\n str: ''\n };\n\n if (str.charCodeAt(pos) === 0x3C /* < */) {\n pos++;\n while (pos < max) {\n code = str.charCodeAt(pos);\n if (code === 0x0A /* \\n */ || isSpace(code)) { return result; }\n if (code === 0x3E /* > */) {\n result.pos = pos + 1;\n result.str = unescapeAll(str.slice(start + 1, pos));\n result.ok = true;\n return result;\n }\n if (code === 0x5C /* \\ */ && pos + 1 < max) {\n pos += 2;\n continue;\n }\n\n pos++;\n }\n\n // no closing '>'\n return result;\n }\n\n // this should be ... } else { ... branch\n\n level = 0;\n while (pos < max) {\n code = str.charCodeAt(pos);\n\n if (code === 0x20) { break; }\n\n // ascii control characters\n if (code < 0x20 || code === 0x7F) { break; }\n\n if (code === 0x5C /* \\ */ && pos + 1 < max) {\n pos += 2;\n continue;\n }\n\n if (code === 0x28 /* ( */) {\n level++;\n if (level > 1) { break; }\n }\n\n if (code === 0x29 /* ) */) {\n level--;\n if (level < 0) { break; }\n }\n\n pos++;\n }\n\n if (start === pos) { return result; }\n\n result.str = unescapeAll(str.slice(start, pos));\n result.lines = lines;\n result.pos = pos;\n result.ok = true;\n return result;\n};\n","(function() {\n var L = require('./L').L,\n N = require('./N').N,\n Z = require('./Z').Z,\n M = require('./M').M,\n unorm = require('unorm');\n\n var _unicodeCategory = function(code) {\n if (~L.indexOf(code)) return 'L';\n if (~N.indexOf(code)) return 'N';\n if (~Z.indexOf(code)) return 'Z';\n if (~M.indexOf(code)) return 'M';\n return undefined;\n };\n\n module.exports = function(string, options) {\n string = string || '';\n options = options || {};\n var allowedChars = options.allowedChars || '-_~';\n var lower = typeof options.lower === 'boolean' ? options.lower : true;\n var spaces = typeof options.spaces === 'boolean' ? options.spaces : false;\n var rv = [];\n var chars = unorm.nfkc(string);\n for(var i = 0; i < chars.length; i++) {\n var c = chars[i];\n var code = c.charCodeAt(0);\n // Allow Common CJK Unified Ideographs\n // See: http://www.unicode.org/versions/Unicode6.0.0/ch12.pdf - Table 12-2 \n if (0x4E00 <= code && code <= 0x9FFF) {\n rv.push(c);\n continue;\n }\n\n // Allow Hangul\n if (0xAC00 <= code && code <= 0xD7A3) {\n rv.push(c);\n continue;\n }\n\n // Japanese ideographic punctuation\n if ((0x3000 <= code && code <= 0x3002) || (0xFF01 <= code && code <= 0xFF02)) {\n rv.push(' ');\n }\n\n if (allowedChars.indexOf(c) != -1) {\n rv.push(c);\n continue;\n }\n var val = _unicodeCategory(code);\n if (val && ~'LNM'.indexOf(val)) rv.push(c);\n if (val && ~'Z'.indexOf(val)) rv.push(' ');\n }\n var slug = rv.join('').replace(/^\\s+|\\s+$/g, '').replace(/\\s+/g,' ');\n if (!spaces) slug = slug.replace(/[\\s\\-]+/g,'-');\n if (lower) slug = slug.toLowerCase();\n return slug;\n };\n}());","/**\n * The Lexer class handles tokenizing the input in various ways. Since our\n * parser expects us to be able to backtrack, the lexer allows lexing from any\n * given starting point.\n *\n * Its main exposed function is the `lex` function, which takes a position to\n * lex from and a type of token to lex. It defers to the appropriate `_innerLex`\n * function.\n *\n * The various `_innerLex` functions perform the actual lexing of different\n * kinds.\n */\n\nvar matchAt = require(\"match-at\");\n\nvar ParseError = require(\"./ParseError\");\n\n// The main lexer class\nfunction Lexer(input) {\n this._input = input;\n}\n\n// The resulting token returned from `lex`.\nfunction Token(text, data, position) {\n this.text = text;\n this.data = data;\n this.position = position;\n}\n\n/* The following tokenRegex\n * - matches typical whitespace (but not NBSP etc.) using its first group\n * - matches symbol combinations which result in a single output character\n * - does not match any control character \\x00-\\x1f except whitespace\n * - does not match a bare backslash\n * - matches any ASCII character except those just mentioned\n * - does not match the BMP private use area \\uE000-\\uF8FF\n * - does not match bare surrogate code units\n * - matches any BMP character except for those just described\n * - matches any valid Unicode surrogate pair\n * - matches a backslash followed by one or more letters\n * - matches a backslash followed by any BMP character, including newline\n * Just because the Lexer matches something doesn't mean it's valid input:\n * If there is no matching function or symbol definition, the Parser will\n * still reject the input.\n */\nvar tokenRegex = new RegExp(\n \"([ \\r\\n\\t]+)|(\" + // whitespace\n \"---?\" + // special combinations\n \"|[!-\\\\[\\\\]-\\u2027\\u202A-\\uD7FF\\uF900-\\uFFFF]\" + // single codepoint\n \"|[\\uD800-\\uDBFF][\\uDC00-\\uDFFF]\" + // surrogate pair\n \"|\\\\\\\\(?:[a-zA-Z]+|[^\\uD800-\\uDFFF])\" + // function name\n \")\"\n);\n\nvar whitespaceRegex = /\\s*/;\n\n/**\n * This function lexes a single normal token. It takes a position and\n * whether it should completely ignore whitespace or not.\n */\nLexer.prototype._innerLex = function(pos, ignoreWhitespace) {\n var input = this._input;\n if (pos === input.length) {\n return new Token(\"EOF\", null, pos);\n }\n var match = matchAt(tokenRegex, input, pos);\n if (match === null) {\n throw new ParseError(\n \"Unexpected character: '\" + input[pos] + \"'\",\n this, pos);\n } else if (match[2]) { // matched non-whitespace\n return new Token(match[2], null, pos + match[2].length);\n } else if (ignoreWhitespace) {\n return this._innerLex(pos + match[1].length, true);\n } else { // concatenate whitespace to a single space\n return new Token(\" \", null, pos + match[1].length);\n }\n};\n\n// A regex to match a CSS color (like #ffffff or BlueViolet)\nvar cssColor = /#[a-z0-9]+|[a-z]+/i;\n\n/**\n * This function lexes a CSS color.\n */\nLexer.prototype._innerLexColor = function(pos) {\n var input = this._input;\n\n // Ignore whitespace\n var whitespace = matchAt(whitespaceRegex, input, pos)[0];\n pos += whitespace.length;\n\n var match;\n if ((match = matchAt(cssColor, input, pos))) {\n // If we look like a color, return a color\n return new Token(match[0], null, pos + match[0].length);\n } else {\n throw new ParseError(\"Invalid color\", this, pos);\n }\n};\n\n// A regex to match a dimension. Dimensions look like\n// \"1.2em\" or \".4pt\" or \"1 ex\"\nvar sizeRegex = /(-?)\\s*(\\d+(?:\\.\\d*)?|\\.\\d+)\\s*([a-z]{2})/;\n\n/**\n * This function lexes a dimension.\n */\nLexer.prototype._innerLexSize = function(pos) {\n var input = this._input;\n\n // Ignore whitespace\n var whitespace = matchAt(whitespaceRegex, input, pos)[0];\n pos += whitespace.length;\n\n var match;\n if ((match = matchAt(sizeRegex, input, pos))) {\n var unit = match[3];\n // We only currently handle \"em\" and \"ex\" units\n if (unit !== \"em\" && unit !== \"ex\") {\n throw new ParseError(\"Invalid unit: '\" + unit + \"'\", this, pos);\n }\n return new Token(match[0], {\n number: +(match[1] + match[2]),\n unit: unit,\n }, pos + match[0].length);\n }\n\n throw new ParseError(\"Invalid size\", this, pos);\n};\n\n/**\n * This function lexes a string of whitespace.\n */\nLexer.prototype._innerLexWhitespace = function(pos) {\n var input = this._input;\n\n var whitespace = matchAt(whitespaceRegex, input, pos)[0];\n pos += whitespace.length;\n\n return new Token(whitespace[0], null, pos);\n};\n\n/**\n * This function lexes a single token starting at `pos` and of the given mode.\n * Based on the mode, we defer to one of the `_innerLex` functions.\n */\nLexer.prototype.lex = function(pos, mode) {\n if (mode === \"math\") {\n return this._innerLex(pos, true);\n } else if (mode === \"text\") {\n return this._innerLex(pos, false);\n } else if (mode === \"color\") {\n return this._innerLexColor(pos);\n } else if (mode === \"size\") {\n return this._innerLexSize(pos);\n } else if (mode === \"whitespace\") {\n return this._innerLexWhitespace(pos);\n }\n};\n\nmodule.exports = Lexer;\n","/**\n * This file converts a parse tree into a cooresponding MathML tree. The main\n * entry point is the `buildMathML` function, which takes a parse tree from the\n * parser.\n */\n\nvar buildCommon = require(\"./buildCommon\");\nvar fontMetrics = require(\"./fontMetrics\");\nvar mathMLTree = require(\"./mathMLTree\");\nvar ParseError = require(\"./ParseError\");\nvar symbols = require(\"./symbols\");\nvar utils = require(\"./utils\");\n\nvar makeSpan = buildCommon.makeSpan;\nvar fontMap = buildCommon.fontMap;\n\n/**\n * Takes a symbol and converts it into a MathML text node after performing\n * optional replacement from symbols.js.\n */\nvar makeText = function(text, mode) {\n if (symbols[mode][text] && symbols[mode][text].replace) {\n text = symbols[mode][text].replace;\n }\n\n return new mathMLTree.TextNode(text);\n};\n\n/**\n * Returns the math variant as a string or null if none is required.\n */\nvar getVariant = function(group, options) {\n var font = options.font;\n if (!font) {\n return null;\n }\n\n var mode = group.mode;\n if (font === \"mathit\") {\n return \"italic\";\n }\n\n var value = group.value;\n if (utils.contains([\"\\\\imath\", \"\\\\jmath\"], value)) {\n return null;\n }\n\n if (symbols[mode][value] && symbols[mode][value].replace) {\n value = symbols[mode][value].replace;\n }\n\n var fontName = fontMap[font].fontName;\n if (fontMetrics.getCharacterMetrics(value, fontName)) {\n return fontMap[options.font].variant;\n }\n\n return null;\n};\n\n/**\n * Functions for handling the different types of groups found in the parse\n * tree. Each function should take a parse group and return a MathML node.\n */\nvar groupTypes = {};\n\ngroupTypes.mathord = function(group, options) {\n var node = new mathMLTree.MathNode(\n \"mi\",\n [makeText(group.value, group.mode)]);\n\n var variant = getVariant(group, options);\n if (variant) {\n node.setAttribute(\"mathvariant\", variant);\n }\n return node;\n};\n\ngroupTypes.textord = function(group, options) {\n var text = makeText(group.value, group.mode);\n\n var variant = getVariant(group, options) || \"normal\";\n\n var node;\n if (/[0-9]/.test(group.value)) {\n // TODO(kevinb) merge adjacent nodes\n // do it as a post processing step\n node = new mathMLTree.MathNode(\"mn\", [text]);\n if (options.font) {\n node.setAttribute(\"mathvariant\", variant);\n }\n } else {\n node = new mathMLTree.MathNode(\"mi\", [text]);\n node.setAttribute(\"mathvariant\", variant);\n }\n\n return node;\n};\n\ngroupTypes.bin = function(group) {\n var node = new mathMLTree.MathNode(\n \"mo\", [makeText(group.value, group.mode)]);\n\n return node;\n};\n\ngroupTypes.rel = function(group) {\n var node = new mathMLTree.MathNode(\n \"mo\", [makeText(group.value, group.mode)]);\n\n return node;\n};\n\ngroupTypes.open = function(group) {\n var node = new mathMLTree.MathNode(\n \"mo\", [makeText(group.value, group.mode)]);\n\n return node;\n};\n\ngroupTypes.close = function(group) {\n var node = new mathMLTree.MathNode(\n \"mo\", [makeText(group.value, group.mode)]);\n\n return node;\n};\n\ngroupTypes.inner = function(group) {\n var node = new mathMLTree.MathNode(\n \"mo\", [makeText(group.value, group.mode)]);\n\n return node;\n};\n\ngroupTypes.punct = function(group) {\n var node = new mathMLTree.MathNode(\n \"mo\", [makeText(group.value, group.mode)]);\n\n node.setAttribute(\"separator\", \"true\");\n\n return node;\n};\n\ngroupTypes.ordgroup = function(group, options) {\n var inner = buildExpression(group.value, options);\n\n var node = new mathMLTree.MathNode(\"mrow\", inner);\n\n return node;\n};\n\ngroupTypes.text = function(group, options) {\n var inner = buildExpression(group.value.body, options);\n\n var node = new mathMLTree.MathNode(\"mtext\", inner);\n\n return node;\n};\n\ngroupTypes.color = function(group, options) {\n var inner = buildExpression(group.value.value, options);\n\n var node = new mathMLTree.MathNode(\"mstyle\", inner);\n\n node.setAttribute(\"mathcolor\", group.value.color);\n\n return node;\n};\n\ngroupTypes.supsub = function(group, options) {\n var children = [buildGroup(group.value.base, options)];\n\n if (group.value.sub) {\n children.push(buildGroup(group.value.sub, options));\n }\n\n if (group.value.sup) {\n children.push(buildGroup(group.value.sup, options));\n }\n\n var nodeType;\n if (!group.value.sub) {\n nodeType = \"msup\";\n } else if (!group.value.sup) {\n nodeType = \"msub\";\n } else {\n nodeType = \"msubsup\";\n }\n\n var node = new mathMLTree.MathNode(nodeType, children);\n\n return node;\n};\n\ngroupTypes.genfrac = function(group, options) {\n var node = new mathMLTree.MathNode(\n \"mfrac\",\n [buildGroup(group.value.numer, options),\n buildGroup(group.value.denom, options)]);\n\n if (!group.value.hasBarLine) {\n node.setAttribute(\"linethickness\", \"0px\");\n }\n\n if (group.value.leftDelim != null || group.value.rightDelim != null) {\n var withDelims = [];\n\n if (group.value.leftDelim != null) {\n var leftOp = new mathMLTree.MathNode(\n \"mo\", [new mathMLTree.TextNode(group.value.leftDelim)]);\n\n leftOp.setAttribute(\"fence\", \"true\");\n\n withDelims.push(leftOp);\n }\n\n withDelims.push(node);\n\n if (group.value.rightDelim != null) {\n var rightOp = new mathMLTree.MathNode(\n \"mo\", [new mathMLTree.TextNode(group.value.rightDelim)]);\n\n rightOp.setAttribute(\"fence\", \"true\");\n\n withDelims.push(rightOp);\n }\n\n var outerNode = new mathMLTree.MathNode(\"mrow\", withDelims);\n\n return outerNode;\n }\n\n return node;\n};\n\ngroupTypes.array = function(group, options) {\n return new mathMLTree.MathNode(\n \"mtable\", group.value.body.map(function(row) {\n return new mathMLTree.MathNode(\n \"mtr\", row.map(function(cell) {\n return new mathMLTree.MathNode(\n \"mtd\", [buildGroup(cell, options)]);\n }));\n }));\n};\n\ngroupTypes.sqrt = function(group, options) {\n var node;\n if (group.value.index) {\n node = new mathMLTree.MathNode(\n \"mroot\", [\n buildGroup(group.value.body, options),\n buildGroup(group.value.index, options),\n ]);\n } else {\n node = new mathMLTree.MathNode(\n \"msqrt\", [buildGroup(group.value.body, options)]);\n }\n\n return node;\n};\n\ngroupTypes.leftright = function(group, options) {\n var inner = buildExpression(group.value.body, options);\n\n if (group.value.left !== \".\") {\n var leftNode = new mathMLTree.MathNode(\n \"mo\", [makeText(group.value.left, group.mode)]);\n\n leftNode.setAttribute(\"fence\", \"true\");\n\n inner.unshift(leftNode);\n }\n\n if (group.value.right !== \".\") {\n var rightNode = new mathMLTree.MathNode(\n \"mo\", [makeText(group.value.right, group.mode)]);\n\n rightNode.setAttribute(\"fence\", \"true\");\n\n inner.push(rightNode);\n }\n\n var outerNode = new mathMLTree.MathNode(\"mrow\", inner);\n\n return outerNode;\n};\n\ngroupTypes.accent = function(group, options) {\n var accentNode = new mathMLTree.MathNode(\n \"mo\", [makeText(group.value.accent, group.mode)]);\n\n var node = new mathMLTree.MathNode(\n \"mover\",\n [buildGroup(group.value.base, options),\n accentNode]);\n\n node.setAttribute(\"accent\", \"true\");\n\n return node;\n};\n\ngroupTypes.spacing = function(group) {\n var node;\n\n if (group.value === \"\\\\ \" || group.value === \"\\\\space\" ||\n group.value === \" \" || group.value === \"~\") {\n node = new mathMLTree.MathNode(\n \"mtext\", [new mathMLTree.TextNode(\"\\u00a0\")]);\n } else {\n node = new mathMLTree.MathNode(\"mspace\");\n\n node.setAttribute(\n \"width\", buildCommon.spacingFunctions[group.value].size);\n }\n\n return node;\n};\n\ngroupTypes.op = function(group) {\n var node;\n\n // TODO(emily): handle big operators using the `largeop` attribute\n\n if (group.value.symbol) {\n // This is a symbol. Just add the symbol.\n node = new mathMLTree.MathNode(\n \"mo\", [makeText(group.value.body, group.mode)]);\n } else {\n // This is a text operator. Add all of the characters from the\n // operator's name.\n // TODO(emily): Add a space in the middle of some of these\n // operators, like \\limsup.\n node = new mathMLTree.MathNode(\n \"mi\", [new mathMLTree.TextNode(group.value.body.slice(1))]);\n }\n\n return node;\n};\n\ngroupTypes.katex = function(group) {\n var node = new mathMLTree.MathNode(\n \"mtext\", [new mathMLTree.TextNode(\"KaTeX\")]);\n\n return node;\n};\n\ngroupTypes.font = function(group, options) {\n var font = group.value.font;\n return buildGroup(group.value.body, options.withFont(font));\n};\n\ngroupTypes.delimsizing = function(group) {\n var children = [];\n\n if (group.value.value !== \".\") {\n children.push(makeText(group.value.value, group.mode));\n }\n\n var node = new mathMLTree.MathNode(\"mo\", children);\n\n if (group.value.delimType === \"open\" ||\n group.value.delimType === \"close\") {\n // Only some of the delimsizing functions act as fences, and they\n // return \"open\" or \"close\" delimTypes.\n node.setAttribute(\"fence\", \"true\");\n } else {\n // Explicitly disable fencing if it's not a fence, to override the\n // defaults.\n node.setAttribute(\"fence\", \"false\");\n }\n\n return node;\n};\n\ngroupTypes.styling = function(group, options) {\n var inner = buildExpression(group.value.value, options);\n\n var node = new mathMLTree.MathNode(\"mstyle\", inner);\n\n var styleAttributes = {\n \"display\": [\"0\", \"true\"],\n \"text\": [\"0\", \"false\"],\n \"script\": [\"1\", \"false\"],\n \"scriptscript\": [\"2\", \"false\"],\n };\n\n var attr = styleAttributes[group.value.style];\n\n node.setAttribute(\"scriptlevel\", attr[0]);\n node.setAttribute(\"displaystyle\", attr[1]);\n\n return node;\n};\n\ngroupTypes.sizing = function(group, options) {\n var inner = buildExpression(group.value.value, options);\n\n var node = new mathMLTree.MathNode(\"mstyle\", inner);\n\n // TODO(emily): This doesn't produce the correct size for nested size\n // changes, because we don't keep state of what style we're currently\n // in, so we can't reset the size to normal before changing it. Now\n // that we're passing an options parameter we should be able to fix\n // this.\n node.setAttribute(\n \"mathsize\", buildCommon.sizingMultiplier[group.value.size] + \"em\");\n\n return node;\n};\n\ngroupTypes.overline = function(group, options) {\n var operator = new mathMLTree.MathNode(\n \"mo\", [new mathMLTree.TextNode(\"\\u203e\")]);\n operator.setAttribute(\"stretchy\", \"true\");\n\n var node = new mathMLTree.MathNode(\n \"mover\",\n [buildGroup(group.value.body, options),\n operator]);\n node.setAttribute(\"accent\", \"true\");\n\n return node;\n};\n\ngroupTypes.underline = function(group, options) {\n var operator = new mathMLTree.MathNode(\n \"mo\", [new mathMLTree.TextNode(\"\\u203e\")]);\n operator.setAttribute(\"stretchy\", \"true\");\n\n var node = new mathMLTree.MathNode(\n \"munder\",\n [buildGroup(group.value.body, options),\n operator]);\n node.setAttribute(\"accentunder\", \"true\");\n\n return node;\n};\n\ngroupTypes.rule = function(group) {\n // TODO(emily): Figure out if there's an actual way to draw black boxes\n // in MathML.\n var node = new mathMLTree.MathNode(\"mrow\");\n\n return node;\n};\n\ngroupTypes.llap = function(group, options) {\n var node = new mathMLTree.MathNode(\n \"mpadded\", [buildGroup(group.value.body, options)]);\n\n node.setAttribute(\"lspace\", \"-1width\");\n node.setAttribute(\"width\", \"0px\");\n\n return node;\n};\n\ngroupTypes.rlap = function(group, options) {\n var node = new mathMLTree.MathNode(\n \"mpadded\", [buildGroup(group.value.body, options)]);\n\n node.setAttribute(\"width\", \"0px\");\n\n return node;\n};\n\ngroupTypes.phantom = function(group, options, prev) {\n var inner = buildExpression(group.value.value, options);\n return new mathMLTree.MathNode(\"mphantom\", inner);\n};\n\n/**\n * Takes a list of nodes, builds them, and returns a list of the generated\n * MathML nodes. A little simpler than the HTML version because we don't do any\n * previous-node handling.\n */\nvar buildExpression = function(expression, options) {\n var groups = [];\n for (var i = 0; i < expression.length; i++) {\n var group = expression[i];\n groups.push(buildGroup(group, options));\n }\n return groups;\n};\n\n/**\n * Takes a group from the parser and calls the appropriate groupTypes function\n * on it to produce a MathML node.\n */\nvar buildGroup = function(group, options) {\n if (!group) {\n return new mathMLTree.MathNode(\"mrow\");\n }\n\n if (groupTypes[group.type]) {\n // Call the groupTypes function\n return groupTypes[group.type](group, options);\n } else {\n throw new ParseError(\n \"Got group of unknown type: '\" + group.type + \"'\");\n }\n};\n\n/**\n * Takes a full parse tree and settings and builds a MathML representation of\n * it. In particular, we put the elements from building the parse tree into a\n * tag so we can also include that TeX source as an annotation.\n *\n * Note that we actually return a domTree element with a `