';\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","// lheading (---, ===)\n\n'use strict';\n\n\nmodule.exports = function lheading(state, startLine, endLine/*, silent*/) {\n var content, terminate, i, l, token, pos, max, level, marker,\n nextLine = startLine + 1,\n terminatorRules = state.md.block.ruler.getRules('paragraph');\n\n // jump line-by-line until empty one or EOF\n for (; nextLine < endLine && !state.isEmpty(nextLine); nextLine++) {\n // this would be a code block normally, but after paragraph\n // it's considered a lazy continuation regardless of what's there\n if (state.sCount[nextLine] - state.blkIndent > 3) { continue; }\n\n //\n // Check for underline in setext header\n //\n if (state.sCount[nextLine] >= state.blkIndent) {\n pos = state.bMarks[nextLine] + state.tShift[nextLine];\n max = state.eMarks[nextLine];\n\n if (pos < max) {\n marker = state.src.charCodeAt(pos);\n\n if (marker === 0x2D/* - */ || marker === 0x3D/* = */) {\n pos = state.skipChars(pos, marker);\n pos = state.skipSpaces(pos);\n\n if (pos >= max) {\n level = (marker === 0x3D/* = */ ? 1 : 2);\n break;\n }\n }\n }\n }\n\n // quirk for blockquotes, this line should already be checked by that rule\n if (state.sCount[nextLine] < 0) { continue; }\n\n // Some tags can terminate paragraph without empty line.\n terminate = false;\n for (i = 0, l = terminatorRules.length; i < l; i++) {\n if (terminatorRules[i](state, nextLine, endLine, true)) {\n terminate = true;\n break;\n }\n }\n if (terminate) { break; }\n }\n\n if (!level) {\n // Didn't find valid underline\n return false;\n }\n\n content = state.getLines(startLine, nextLine, state.blkIndent, false).trim();\n\n state.line = nextLine + 1;\n\n token = state.push('heading_open', 'h' + String(level), 1);\n token.markup = String.fromCharCode(marker);\n token.map = [ startLine, state.line ];\n\n token = state.push('inline', '', 0);\n token.content = content;\n token.map = [ startLine, state.line - 1 ];\n token.children = [];\n\n token = state.push('heading_close', 'h' + String(level), -1);\n token.markup = String.fromCharCode(marker);\n\n return true;\n};\n","// \"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 '\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","\"use strict\";\n\nObject.defineProperty(exports, \"__esModule\", {\n value: true\n});\nexports.default = _default;\n\nvar _clone = _interopRequireDefault(require(\"clone\"));\n\nvar _uslug = _interopRequireDefault(require(\"uslug\"));\n\nvar _token = _interopRequireDefault(require(\"markdown-it/lib/token\"));\n\nfunction _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }\n\nfunction _typeof(obj) { if (typeof Symbol === \"function\" && typeof Symbol.iterator === \"symbol\") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === \"function\" && obj.constructor === Symbol && obj !== Symbol.prototype ? \"symbol\" : typeof obj; }; } return _typeof(obj); }\n\nfunction _toConsumableArray(arr) { return _arrayWithoutHoles(arr) || _iterableToArray(arr) || _nonIterableSpread(); }\n\nfunction _nonIterableSpread() { throw new TypeError(\"Invalid attempt to spread non-iterable instance\"); }\n\nfunction _iterableToArray(iter) { if (Symbol.iterator in Object(iter) || Object.prototype.toString.call(iter) === \"[object Arguments]\") return Array.from(iter); }\n\nfunction _arrayWithoutHoles(arr) { if (Array.isArray(arr)) { for (var i = 0, arr2 = new Array(arr.length); i < arr.length; i++) { arr2[i] = arr[i]; } return arr2; } }\n\nfunction _objectSpread(target) { for (var i = 1; i < arguments.length; i++) { var source = arguments[i] != null ? arguments[i] : {}; var ownKeys = Object.keys(source); if (typeof Object.getOwnPropertySymbols === 'function') { ownKeys = ownKeys.concat(Object.getOwnPropertySymbols(source).filter(function (sym) { return Object.getOwnPropertyDescriptor(source, sym).enumerable; })); } ownKeys.forEach(function (key) { _defineProperty(target, key, source[key]); }); } return target; }\n\nfunction _defineProperty(obj, key, value) { if (key in obj) { Object.defineProperty(obj, key, { value: value, enumerable: true, configurable: true, writable: true }); } else { obj[key] = value; } return obj; }\n\nvar TOC = \"@[toc]\";\nvar TOC_RE = /^@\\[toc\\]/im;\n\nvar markdownItSecondInstance = function markdownItSecondInstance() {};\n\nvar headingIds = {};\nvar tocHtml = \"\";\n\nvar repeat = function repeat(string, num) {\n return new Array(num + 1).join(string);\n};\n\nvar makeSafe = function makeSafe(string, headingIds, slugifyFn) {\n var key = slugifyFn(string); // slugify\n\n if (!headingIds[key]) {\n headingIds[key] = 0;\n }\n\n headingIds[key]++;\n return key + (headingIds[key] > 1 ? \"-\".concat(headingIds[key]) : \"\");\n};\n\nvar space = function space() {\n return _objectSpread({}, new _token.default(\"text\", \"\", 0), {\n content: \" \"\n });\n};\n\nvar renderAnchorLinkSymbol = function renderAnchorLinkSymbol(options) {\n if (options.anchorLinkSymbolClassName) {\n return [_objectSpread({}, new _token.default(\"span_open\", \"span\", 1), {\n attrs: [[\"class\", options.anchorLinkSymbolClassName]]\n }), _objectSpread({}, new _token.default(\"text\", \"\", 0), {\n content: options.anchorLinkSymbol\n }), new _token.default(\"span_close\", \"span\", -1)];\n } else {\n return [_objectSpread({}, new _token.default(\"text\", \"\", 0), {\n content: options.anchorLinkSymbol\n })];\n }\n};\n\nvar renderAnchorLink = function renderAnchorLink(anchor, options, tokens, idx) {\n var attrs = [];\n\n if (options.anchorClassName != null) {\n attrs.push([\"class\", options.anchorClassName]);\n }\n\n attrs.push([\"href\", \"#\".concat(anchor)]);\n\n var openLinkToken = _objectSpread({}, new _token.default(\"link_open\", \"a\", 1), {\n attrs: attrs\n });\n\n var closeLinkToken = new _token.default(\"link_close\", \"a\", -1);\n\n if (options.wrapHeadingTextInAnchor) {\n tokens[idx + 1].children.unshift(openLinkToken);\n tokens[idx + 1].children.push(closeLinkToken);\n } else {\n var _tokens$children;\n\n var linkTokens = [openLinkToken].concat(_toConsumableArray(renderAnchorLinkSymbol(options)), [closeLinkToken]); // `push` or `unshift` according to anchorLinkBefore option\n // space is at the opposite side.\n\n var actionOnArray = {\n false: \"push\",\n true: \"unshift\"\n }; // insert space between anchor link and heading ?\n\n if (options.anchorLinkSpace) {\n linkTokens[actionOnArray[!options.anchorLinkBefore]](space());\n }\n\n (_tokens$children = tokens[idx + 1].children)[actionOnArray[options.anchorLinkBefore]].apply(_tokens$children, _toConsumableArray(linkTokens));\n }\n};\n\nvar treeToMarkdownBulletList = function treeToMarkdownBulletList(tree) {\n var indent = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : 0;\n return tree.map(function (item) {\n var indentation = \" \";\n var node = \"\".concat(repeat(indentation, indent), \"*\");\n\n if (item.heading.content) {\n var contentWithoutAnchor = item.heading.content.replace(/\\[([^\\]]*)\\]\\([^)]*\\)/g, \"$1\");\n node += \" \" + \"[\".concat(contentWithoutAnchor, \"](#\").concat(item.heading.anchor, \")\\n\");\n } else {\n node += \"\\n\";\n }\n\n if (item.nodes.length) {\n node += treeToMarkdownBulletList(item.nodes, indent + 1);\n }\n\n return node;\n }).join(\"\");\n};\n\nvar generateTocMarkdownFromArray = function generateTocMarkdownFromArray(headings, options) {\n var tree = {\n nodes: []\n }; // create an ast\n\n headings.forEach(function (heading) {\n if (heading.level < options.tocFirstLevel || heading.level > options.tocLastLevel) {\n return;\n }\n\n var i = 1;\n var lastItem = tree;\n\n for (; i < heading.level - options.tocFirstLevel + 1; i++) {\n if (lastItem.nodes.length === 0) {\n lastItem.nodes.push({\n heading: {},\n nodes: []\n });\n }\n\n lastItem = lastItem.nodes[lastItem.nodes.length - 1];\n }\n\n lastItem.nodes.push({\n heading: heading,\n nodes: []\n });\n });\n return treeToMarkdownBulletList(tree.nodes);\n};\n\nfunction _default(md, options) {\n options = _objectSpread({\n toc: true,\n tocClassName: \"markdownIt-TOC\",\n tocFirstLevel: 1,\n tocLastLevel: 6,\n tocCallback: null,\n anchorLink: true,\n anchorLinkSymbol: \"#\",\n anchorLinkBefore: true,\n anchorClassName: \"markdownIt-Anchor\",\n resetIds: true,\n anchorLinkSpace: true,\n anchorLinkSymbolClassName: null,\n wrapHeadingTextInAnchor: false\n }, options);\n markdownItSecondInstance = (0, _clone.default)(md); // initialize key ids for each instance\n\n headingIds = {};\n md.core.ruler.push(\"init_toc\", function (state) {\n var tokens = state.tokens; // reset key ids for each document\n\n if (options.resetIds) {\n headingIds = {};\n }\n\n var tocArray = [];\n var tocMarkdown = \"\";\n var tocTokens = [];\n var slugifyFn = typeof options.slugify === \"function\" && options.slugify || _uslug.default;\n\n for (var i = 0; i < tokens.length; i++) {\n if (tokens[i].type !== \"heading_close\") {\n continue;\n }\n\n var heading = tokens[i - 1];\n var heading_close = tokens[i];\n\n if (heading.type === \"inline\") {\n var content = void 0;\n\n if (heading.children && heading.children.length > 0 && heading.children[0].type === \"link_open\") {\n // headings that contain links have to be processed\n // differently since nested links aren't allowed in markdown\n content = heading.children[1].content;\n heading._tocAnchor = makeSafe(content, headingIds, slugifyFn);\n } else {\n content = heading.content;\n heading._tocAnchor = makeSafe(heading.children.reduce(function (acc, t) {\n return acc + t.content;\n }, \"\"), headingIds, slugifyFn);\n }\n\n if (options.anchorLinkPrefix) {\n heading._tocAnchor = options.anchorLinkPrefix + heading._tocAnchor;\n }\n\n tocArray.push({\n content: content,\n anchor: heading._tocAnchor,\n level: +heading_close.tag.substr(1, 1)\n });\n }\n }\n\n tocMarkdown = generateTocMarkdownFromArray(tocArray, options);\n tocTokens = markdownItSecondInstance.parse(tocMarkdown, {}); // Adding tocClassName to 'ul' element\n\n if (_typeof(tocTokens[0]) === \"object\" && tocTokens[0].type === \"bullet_list_open\") {\n var attrs = tocTokens[0].attrs = tocTokens[0].attrs || [];\n\n if (options.tocClassName != null) {\n attrs.push([\"class\", options.tocClassName]);\n }\n }\n\n tocHtml = markdownItSecondInstance.renderer.render(tocTokens, markdownItSecondInstance.options);\n\n if (typeof state.env.tocCallback === \"function\") {\n state.env.tocCallback.call(undefined, tocMarkdown, tocArray, tocHtml);\n } else if (typeof options.tocCallback === \"function\") {\n options.tocCallback.call(undefined, tocMarkdown, tocArray, tocHtml);\n } else if (typeof md.options.tocCallback === \"function\") {\n md.options.tocCallback.call(undefined, tocMarkdown, tocArray, tocHtml);\n }\n });\n md.inline.ruler.after(\"emphasis\", \"toc\", function (state, silent) {\n var token;\n var match;\n\n if ( // Reject if the token does not start with @[\n state.src.charCodeAt(state.pos) !== 0x40 || state.src.charCodeAt(state.pos + 1) !== 0x5b || // Don’t run any pairs in validation mode\n silent) {\n return false;\n } // Detect TOC markdown\n\n\n match = TOC_RE.exec(state.src);\n match = !match ? [] : match.filter(function (m) {\n return m;\n });\n\n if (match.length < 1) {\n return false;\n } // Build content\n\n\n token = state.push(\"toc_open\", \"toc\", 1);\n token.markup = TOC;\n token = state.push(\"toc_body\", \"\", 0);\n token = state.push(\"toc_close\", \"toc\", -1); // Update pos so the parser can continue\n\n state.pos = state.pos + 6;\n return true;\n });\n\n var originalHeadingOpen = md.renderer.rules.heading_open || function () {\n for (var _len = arguments.length, args = new Array(_len), _key = 0; _key < _len; _key++) {\n args[_key] = arguments[_key];\n }\n\n var tokens = args[0],\n idx = args[1],\n options = args[2],\n self = args[4];\n return self.renderToken(tokens, idx, options);\n };\n\n md.renderer.rules.heading_open = function () {\n for (var _len2 = arguments.length, args = new Array(_len2), _key2 = 0; _key2 < _len2; _key2++) {\n args[_key2] = arguments[_key2];\n }\n\n var tokens = args[0],\n idx = args[1];\n var attrs = tokens[idx].attrs = tokens[idx].attrs || [];\n var anchor = tokens[idx + 1]._tocAnchor;\n attrs.push([\"id\", anchor]);\n\n if (options.anchorLink) {\n renderAnchorLink.apply(void 0, [anchor, options].concat(args));\n }\n\n return originalHeadingOpen.apply(this, args);\n };\n\n md.renderer.rules.toc_open = function () {\n return \"\";\n };\n\n md.renderer.rules.toc_close = function () {\n return \"\";\n };\n\n md.renderer.rules.toc_body = function () {\n return \"\";\n };\n\n if (options.toc) {\n md.renderer.rules.toc_body = function () {\n return tocHtml;\n };\n }\n}","'use strict';\n\n\nmodule.exports = function block(state) {\n var token;\n\n if (state.inlineMode) {\n token = new state.Token('inline', '', 0);\n token.content = state.src;\n token.map = [ 0, 1 ];\n token.children = [];\n state.tokens.push(token);\n } else {\n state.md.block.parse(state.src, state.md, state.env, state.tokens);\n }\n};\n","'use strict';\n\n\nvar emojies_defs = require('./lib/data/full.json');\nvar emojies_shortcuts = require('./lib/data/shortcuts');\nvar emoji_html = require('./lib/render');\nvar emoji_replace = require('./lib/replace');\nvar normalize_opts = require('./lib/normalize_opts');\n\n\nmodule.exports = function emoji_plugin(md, options) {\n var defaults = {\n defs: emojies_defs,\n shortcuts: emojies_shortcuts,\n enabled: []\n };\n\n var opts = normalize_opts(md.utils.assign({}, defaults, options || {}));\n\n md.renderer.rules.emoji = emoji_html;\n\n md.core.ruler.push('emoji', emoji_replace(md, opts.defs, opts.shortcuts, opts.scanRE, opts.replaceRE));\n};\n","// Convert input options to more useable format\n// and compile search regexp\n\n'use strict';\n\n\nfunction quoteRE(str) {\n return str.replace(/[.?*+^$[\\]\\\\(){}|-]/g, '\\\\$&');\n}\n\n\nmodule.exports = function normalize_opts(options) {\n var emojies = options.defs,\n shortcuts;\n\n // Filter emojies by whitelist, if needed\n if (options.enabled.length) {\n emojies = Object.keys(emojies).reduce(function (acc, key) {\n if (options.enabled.indexOf(key) >= 0) {\n acc[key] = emojies[key];\n }\n return acc;\n }, {});\n }\n\n // Flatten shortcuts to simple object: { alias: emoji_name }\n shortcuts = Object.keys(options.shortcuts).reduce(function (acc, key) {\n // Skip aliases for filtered emojies, to reduce regexp\n if (!emojies[key]) { return acc; }\n\n if (Array.isArray(options.shortcuts[key])) {\n options.shortcuts[key].forEach(function (alias) {\n acc[alias] = key;\n });\n return acc;\n }\n\n acc[options.shortcuts[key]] = key;\n return acc;\n }, {});\n\n // Compile regexp\n var names = Object.keys(emojies)\n .map(function (name) { return ':' + name + ':'; })\n .concat(Object.keys(shortcuts))\n .sort()\n .reverse()\n .map(function (name) { return quoteRE(name); })\n .join('|');\n var scanRE = RegExp(names);\n var replaceRE = RegExp(names, 'g');\n\n return {\n defs: emojies,\n shortcuts: shortcuts,\n scanRE: scanRE,\n replaceRE: replaceRE\n };\n};\n","// Proceess '\\n'\n\n'use strict';\n\nmodule.exports = function newline(state, silent) {\n var pmax, max, pos = state.pos;\n\n if (state.src.charCodeAt(pos) !== 0x0A/* \\n */) { return false; }\n\n pmax = state.pending.length - 1;\n max = state.posMax;\n\n // ' \\n' -> hardbreak\n // Lookup in pending chars is bad practice! Don't copy to other rules!\n // Pending string is stored in concat mode, indexed lookups will cause\n // convertion to flat mode.\n if (!silent) {\n if (pmax >= 0 && state.pending.charCodeAt(pmax) === 0x20) {\n if (pmax >= 1 && state.pending.charCodeAt(pmax - 1) === 0x20) {\n state.pending = state.pending.replace(/ +$/, '');\n state.push('hardbreak', 'br', 0);\n } else {\n state.pending = state.pending.slice(0, -1);\n state.push('softbreak', 'br', 0);\n }\n\n } else {\n state.push('softbreak', 'br', 0);\n }\n }\n\n pos++;\n\n // skip heading spaces for next line\n while (pos < max && state.src.charCodeAt(pos) === 0x20) { pos++; }\n\n state.pos = pos;\n return true;\n};\n","// Commonmark default options\n\n'use strict';\n\n\nmodule.exports = {\n options: {\n html: true, // Enable HTML tags in source\n xhtmlOut: true, // 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 3) { continue; }\n\n // quirk for blockquotes, this line should already be checked by that rule\n if (state.sCount[nextLine] < 0) { continue; }\n\n // Some tags can terminate paragraph without empty line.\n terminate = false;\n for (i = 0, l = terminatorRules.length; i < l; i++) {\n if (terminatorRules[i](state, nextLine, endLine, true)) {\n terminate = true;\n break;\n }\n }\n if (terminate) { break; }\n }\n\n content = state.getLines(startLine, nextLine, state.blkIndent, false).trim();\n\n state.line = nextLine;\n\n token = state.push('paragraph_open', 'p', 1);\n token.map = [ startLine, state.line ];\n\n token = state.push('inline', '', 0);\n token.content = content;\n token.map = [ startLine, state.line ];\n token.children = [];\n\n token = state.push('paragraph_close', 'p', -1);\n\n return true;\n};\n","/**\n * class Ruler\n *\n * Helper class, used by [[MarkdownIt#core]], [[MarkdownIt#block]] and\n * [[MarkdownIt#inline]] to manage sequences of functions (rules):\n *\n * - keep rules in defined order\n * - assign the name to each rule\n * - enable/disable rules\n * - add/replace rules\n * - allow assign rules to additional named chains (in the same)\n * - cacheing lists of active rules\n *\n * You will not need use this class directly until write plugins. For simple\n * rules control use [[MarkdownIt.disable]], [[MarkdownIt.enable]] and\n * [[MarkdownIt.use]].\n **/\n'use strict';\n\n\n/**\n * new Ruler()\n **/\nfunction Ruler() {\n // List of added rules. Each element is:\n //\n // {\n // name: XXX,\n // enabled: Boolean,\n // fn: Function(),\n // alt: [ name2, name3 ]\n // }\n //\n this.__rules__ = [];\n\n // Cached rule chains.\n //\n // First level - chain name, '' for default.\n // Second level - diginal anchor for fast filtering by charcodes.\n //\n this.__cache__ = null;\n}\n\n////////////////////////////////////////////////////////////////////////////////\n// Helper methods, should not be used directly\n\n\n// Find rule index by name\n//\nRuler.prototype.__find__ = function (name) {\n for (var i = 0; i < this.__rules__.length; i++) {\n if (this.__rules__[i].name === name) {\n return i;\n }\n }\n return -1;\n};\n\n\n// Build rules lookup cache\n//\nRuler.prototype.__compile__ = function () {\n var self = this;\n var chains = [ '' ];\n\n // collect unique names\n self.__rules__.forEach(function (rule) {\n if (!rule.enabled) { return; }\n\n rule.alt.forEach(function (altName) {\n if (chains.indexOf(altName) < 0) {\n chains.push(altName);\n }\n });\n });\n\n self.__cache__ = {};\n\n chains.forEach(function (chain) {\n self.__cache__[chain] = [];\n self.__rules__.forEach(function (rule) {\n if (!rule.enabled) { return; }\n\n if (chain && rule.alt.indexOf(chain) < 0) { return; }\n\n self.__cache__[chain].push(rule.fn);\n });\n });\n};\n\n\n/**\n * Ruler.at(name, fn [, options])\n * - name (String): rule name to replace.\n * - fn (Function): new rule function.\n * - options (Object): new rule options (not mandatory).\n *\n * Replace rule by name with new function & options. Throws error if name not\n * found.\n *\n * ##### Options:\n *\n * - __alt__ - array with names of \"alternate\" chains.\n *\n * ##### Example\n *\n * Replace existing typorgapher replacement rule with new one:\n *\n * ```javascript\n * var md = require('markdown-it')();\n *\n * md.core.ruler.at('replacements', function replace(state) {\n * //...\n * });\n * ```\n **/\nRuler.prototype.at = function (name, fn, options) {\n var index = this.__find__(name);\n var opt = options || {};\n\n if (index === -1) { throw new Error('Parser rule not found: ' + name); }\n\n this.__rules__[index].fn = fn;\n this.__rules__[index].alt = opt.alt || [];\n this.__cache__ = null;\n};\n\n\n/**\n * Ruler.before(beforeName, ruleName, fn [, options])\n * - beforeName (String): new rule will be added before this one.\n * - ruleName (String): name of added rule.\n * - fn (Function): rule function.\n * - options (Object): rule options (not mandatory).\n *\n * Add new rule to chain before one with given name. See also\n * [[Ruler.after]], [[Ruler.push]].\n *\n * ##### Options:\n *\n * - __alt__ - array with names of \"alternate\" chains.\n *\n * ##### Example\n *\n * ```javascript\n * var md = require('markdown-it')();\n *\n * md.block.ruler.before('paragraph', 'my_rule', function replace(state) {\n * //...\n * });\n * ```\n **/\nRuler.prototype.before = function (beforeName, ruleName, fn, options) {\n var index = this.__find__(beforeName);\n var opt = options || {};\n\n if (index === -1) { throw new Error('Parser rule not found: ' + beforeName); }\n\n this.__rules__.splice(index, 0, {\n name: ruleName,\n enabled: true,\n fn: fn,\n alt: opt.alt || []\n });\n\n this.__cache__ = null;\n};\n\n\n/**\n * Ruler.after(afterName, ruleName, fn [, options])\n * - afterName (String): new rule will be added after this one.\n * - ruleName (String): name of added rule.\n * - fn (Function): rule function.\n * - options (Object): rule options (not mandatory).\n *\n * Add new rule to chain after one with given name. See also\n * [[Ruler.before]], [[Ruler.push]].\n *\n * ##### Options:\n *\n * - __alt__ - array with names of \"alternate\" chains.\n *\n * ##### Example\n *\n * ```javascript\n * var md = require('markdown-it')();\n *\n * md.inline.ruler.after('text', 'my_rule', function replace(state) {\n * //...\n * });\n * ```\n **/\nRuler.prototype.after = function (afterName, ruleName, fn, options) {\n var index = this.__find__(afterName);\n var opt = options || {};\n\n if (index === -1) { throw new Error('Parser rule not found: ' + afterName); }\n\n this.__rules__.splice(index + 1, 0, {\n name: ruleName,\n enabled: true,\n fn: fn,\n alt: opt.alt || []\n });\n\n this.__cache__ = null;\n};\n\n/**\n * Ruler.push(ruleName, fn [, options])\n * - ruleName (String): name of added rule.\n * - fn (Function): rule function.\n * - options (Object): rule options (not mandatory).\n *\n * Push new rule to the end of chain. See also\n * [[Ruler.before]], [[Ruler.after]].\n *\n * ##### Options:\n *\n * - __alt__ - array with names of \"alternate\" chains.\n *\n * ##### Example\n *\n * ```javascript\n * var md = require('markdown-it')();\n *\n * md.core.ruler.push('my_rule', function replace(state) {\n * //...\n * });\n * ```\n **/\nRuler.prototype.push = function (ruleName, fn, options) {\n var opt = options || {};\n\n this.__rules__.push({\n name: ruleName,\n enabled: true,\n fn: fn,\n alt: opt.alt || []\n });\n\n this.__cache__ = null;\n};\n\n\n/**\n * Ruler.enable(list [, ignoreInvalid]) -> Array\n * - list (String|Array): list of rule names to enable.\n * - ignoreInvalid (Boolean): set `true` to ignore errors when rule not found.\n *\n * Enable rules with given names. If any rule name not found - throw Error.\n * Errors can be disabled by second param.\n *\n * Returns list of found rule names (if no exception happened).\n *\n * See also [[Ruler.disable]], [[Ruler.enableOnly]].\n **/\nRuler.prototype.enable = function (list, ignoreInvalid) {\n if (!Array.isArray(list)) { list = [ list ]; }\n\n var result = [];\n\n // Search by name and enable\n list.forEach(function (name) {\n var idx = this.__find__(name);\n\n if (idx < 0) {\n if (ignoreInvalid) { return; }\n throw new Error('Rules manager: invalid rule name ' + name);\n }\n this.__rules__[idx].enabled = true;\n result.push(name);\n }, this);\n\n this.__cache__ = null;\n return result;\n};\n\n\n/**\n * Ruler.enableOnly(list [, ignoreInvalid])\n * - list (String|Array): list of rule names to enable (whitelist).\n * - ignoreInvalid (Boolean): set `true` to ignore errors when rule not found.\n *\n * Enable rules with given names, and disable everything else. If any rule name\n * not found - throw Error. Errors can be disabled by second param.\n *\n * See also [[Ruler.disable]], [[Ruler.enable]].\n **/\nRuler.prototype.enableOnly = function (list, ignoreInvalid) {\n if (!Array.isArray(list)) { list = [ list ]; }\n\n this.__rules__.forEach(function (rule) { rule.enabled = false; });\n\n this.enable(list, ignoreInvalid);\n};\n\n\n/**\n * Ruler.disable(list [, ignoreInvalid]) -> Array\n * - list (String|Array): list of rule names to disable.\n * - ignoreInvalid (Boolean): set `true` to ignore errors when rule not found.\n *\n * Disable rules with given names. If any rule name not found - throw Error.\n * Errors can be disabled by second param.\n *\n * Returns list of found rule names (if no exception happened).\n *\n * See also [[Ruler.enable]], [[Ruler.enableOnly]].\n **/\nRuler.prototype.disable = function (list, ignoreInvalid) {\n if (!Array.isArray(list)) { list = [ list ]; }\n\n var result = [];\n\n // Search by name and disable\n list.forEach(function (name) {\n var idx = this.__find__(name);\n\n if (idx < 0) {\n if (ignoreInvalid) { return; }\n throw new Error('Rules manager: invalid rule name ' + name);\n }\n this.__rules__[idx].enabled = false;\n result.push(name);\n }, this);\n\n this.__cache__ = null;\n return result;\n};\n\n\n/**\n * Ruler.getRules(chainName) -> Array\n *\n * Return array of active functions (rules) for given chain name. It analyzes\n * rules configuration, compiles caches if not exists and returns result.\n *\n * Default chain name is `''` (empty string). It can't be skipped. That's\n * done intentionally, to keep signature monomorphic for high speed.\n **/\nRuler.prototype.getRules = function (chainName) {\n if (this.__cache__ === null) {\n this.__compile__();\n }\n\n // Chain can be empty, if rules disabled. But we still have to return Array.\n return this.__cache__[chainName] || [];\n};\n\nmodule.exports = Ruler;\n","// Emojies & shortcuts replacement logic.\n//\n// Note: In theory, it could be faster to parse :smile: in inline chain and\n// leave only shortcuts here. But, who care...\n//\n\n'use strict';\n\n\nmodule.exports = function create_rule(md, emojies, shortcuts, scanRE, replaceRE) {\n var arrayReplaceAt = md.utils.arrayReplaceAt,\n ucm = md.utils.lib.ucmicro,\n ZPCc = new RegExp([ ucm.Z.source, ucm.P.source, ucm.Cc.source ].join('|'));\n\n function splitTextToken(text, level, Token) {\n var token, last_pos = 0, nodes = [];\n\n text.replace(replaceRE, function (match, offset, src) {\n var emoji_name;\n // Validate emoji name\n if (shortcuts.hasOwnProperty(match)) {\n // replace shortcut with full name\n emoji_name = shortcuts[match];\n\n // Don't allow letters before any shortcut (as in no \":/\" in http://)\n if (offset > 0 && !ZPCc.test(src[offset - 1])) {\n return;\n }\n\n // Don't allow letters after any shortcut\n if (offset + match.length < src.length && !ZPCc.test(src[offset + match.length])) {\n return;\n }\n } else {\n emoji_name = match.slice(1, -1);\n }\n\n // Add new tokens to pending list\n if (offset > last_pos) {\n token = new Token('text', '', 0);\n token.content = text.slice(last_pos, offset);\n nodes.push(token);\n }\n\n token = new Token('emoji', '', 0);\n token.markup = emoji_name;\n token.content = emojies[emoji_name];\n nodes.push(token);\n\n last_pos = offset + match.length;\n });\n\n if (last_pos < text.length) {\n token = new Token('text', '', 0);\n token.content = text.slice(last_pos);\n nodes.push(token);\n }\n\n return nodes;\n }\n\n return function emoji_replace(state) {\n var i, j, l, tokens, token,\n blockTokens = state.tokens,\n autolinkLevel = 0;\n\n for (j = 0, l = blockTokens.length; j < l; j++) {\n if (blockTokens[j].type !== 'inline') { continue; }\n tokens = blockTokens[j].children;\n\n // We scan from the end, to keep position when new tags added.\n // Use reversed logic in links start/end match\n for (i = tokens.length - 1; i >= 0; i--) {\n token = tokens[i];\n\n if (token.type === 'link_open' || token.type === 'link_close') {\n if (token.info === 'auto') { autolinkLevel -= token.nesting; }\n }\n\n if (token.type === 'text' && autolinkLevel === 0 && scanRE.test(token.content)) {\n // replace current node\n blockTokens[j].children = tokens = arrayReplaceAt(\n tokens, i, splitTextToken(token.content, token.level, state.Token)\n );\n }\n }\n }\n };\n};\n","// Parse backticks\n\n'use strict';\n\nmodule.exports = function backtick(state, silent) {\n var start, max, marker, matchStart, matchEnd, token,\n pos = state.pos,\n ch = state.src.charCodeAt(pos);\n\n if (ch !== 0x60/* ` */) { return false; }\n\n start = pos;\n pos++;\n max = state.posMax;\n\n while (pos < max && state.src.charCodeAt(pos) === 0x60/* ` */) { pos++; }\n\n marker = state.src.slice(start, pos);\n\n matchStart = matchEnd = pos;\n\n while ((matchStart = state.src.indexOf('`', matchEnd)) !== -1) {\n matchEnd = matchStart + 1;\n\n while (matchEnd < max && state.src.charCodeAt(matchEnd) === 0x60/* ` */) { matchEnd++; }\n\n if (matchEnd - matchStart === marker.length) {\n if (!silent) {\n token = state.push('code_inline', 'code', 0);\n token.markup = marker;\n token.content = state.src.slice(pos, matchStart)\n .replace(/[ \\n]+/g, ' ')\n .trim();\n }\n state.pos = matchEnd;\n return true;\n }\n }\n\n if (!silent) { state.pending += marker; }\n state.pos += marker.length;\n return true;\n};\n","// Lists\n\n'use strict';\n\nvar isSpace = require('../common/utils').isSpace;\n\n\n// Search `[-+*][\\n ]`, returns next pos arter marker on success\n// or -1 on fail.\nfunction skipBulletListMarker(state, startLine) {\n var marker, pos, max, ch;\n\n pos = state.bMarks[startLine] + state.tShift[startLine];\n max = state.eMarks[startLine];\n\n marker = state.src.charCodeAt(pos++);\n // Check bullet\n if (marker !== 0x2A/* * */ &&\n marker !== 0x2D/* - */ &&\n marker !== 0x2B/* + */) {\n return -1;\n }\n\n if (pos < max) {\n ch = state.src.charCodeAt(pos);\n\n if (!isSpace(ch)) {\n // \" -test \" - is not a list item\n return -1;\n }\n }\n\n return pos;\n}\n\n// Search `\\d+[.)][\\n ]`, returns next pos arter marker on success\n// or -1 on fail.\nfunction skipOrderedListMarker(state, startLine) {\n var ch,\n start = state.bMarks[startLine] + state.tShift[startLine],\n pos = start,\n max = state.eMarks[startLine];\n\n // List marker should have at least 2 chars (digit + dot)\n if (pos + 1 >= max) { return -1; }\n\n ch = state.src.charCodeAt(pos++);\n\n if (ch < 0x30/* 0 */ || ch > 0x39/* 9 */) { return -1; }\n\n for (;;) {\n // EOL -> fail\n if (pos >= max) { return -1; }\n\n ch = state.src.charCodeAt(pos++);\n\n if (ch >= 0x30/* 0 */ && ch <= 0x39/* 9 */) {\n\n // List marker should have no more than 9 digits\n // (prevents integer overflow in browsers)\n if (pos - start >= 10) { return -1; }\n\n continue;\n }\n\n // found valid marker\n if (ch === 0x29/* ) */ || ch === 0x2e/* . */) {\n break;\n }\n\n return -1;\n }\n\n\n if (pos < max) {\n ch = state.src.charCodeAt(pos);\n\n if (!isSpace(ch)) {\n // \" 1.test \" - is not a list item\n return -1;\n }\n }\n return pos;\n}\n\nfunction markTightParagraphs(state, idx) {\n var i, l,\n level = state.level + 2;\n\n for (i = idx + 2, l = state.tokens.length - 2; i < l; i++) {\n if (state.tokens[i].level === level && state.tokens[i].type === 'paragraph_open') {\n state.tokens[i + 2].hidden = true;\n state.tokens[i].hidden = true;\n i += 2;\n }\n }\n}\n\n\nmodule.exports = function list(state, startLine, endLine, silent) {\n var nextLine,\n initial,\n offset,\n indent,\n oldTShift,\n oldIndent,\n oldLIndent,\n oldTight,\n oldParentType,\n start,\n posAfterMarker,\n ch,\n pos,\n max,\n indentAfterMarker,\n markerValue,\n markerCharCode,\n isOrdered,\n contentStart,\n listTokIdx,\n prevEmptyEnd,\n listLines,\n itemLines,\n tight = true,\n terminatorRules,\n token,\n i, l, terminate;\n\n // Detect list type and position after marker\n if ((posAfterMarker = skipOrderedListMarker(state, startLine)) >= 0) {\n isOrdered = true;\n } else if ((posAfterMarker = skipBulletListMarker(state, startLine)) >= 0) {\n isOrdered = false;\n } else {\n return false;\n }\n\n // We should terminate list on style change. Remember first one to compare.\n markerCharCode = state.src.charCodeAt(posAfterMarker - 1);\n\n // For validation mode we can terminate immediately\n if (silent) { return true; }\n\n // Start list\n listTokIdx = state.tokens.length;\n\n if (isOrdered) {\n start = state.bMarks[startLine] + state.tShift[startLine];\n markerValue = Number(state.src.substr(start, posAfterMarker - start - 1));\n\n token = state.push('ordered_list_open', 'ol', 1);\n if (markerValue !== 1) {\n token.attrs = [ [ 'start', markerValue ] ];\n }\n\n } else {\n token = state.push('bullet_list_open', 'ul', 1);\n }\n\n token.map = listLines = [ startLine, 0 ];\n token.markup = String.fromCharCode(markerCharCode);\n\n //\n // Iterate list items\n //\n\n nextLine = startLine;\n prevEmptyEnd = false;\n terminatorRules = state.md.block.ruler.getRules('list');\n\n while (nextLine < endLine) {\n pos = posAfterMarker;\n max = state.eMarks[nextLine];\n\n initial = offset = state.sCount[nextLine] + posAfterMarker - (state.bMarks[startLine] + state.tShift[startLine]);\n\n while (pos < max) {\n ch = state.src.charCodeAt(pos);\n\n if (isSpace(ch)) {\n if (ch === 0x09) {\n offset += 4 - offset % 4;\n } else {\n offset++;\n }\n } else {\n break;\n }\n\n pos++;\n }\n\n contentStart = pos;\n\n if (contentStart >= max) {\n // trimming space in \"- \\n 3\" case, indent is 1 here\n indentAfterMarker = 1;\n } else {\n indentAfterMarker = offset - initial;\n }\n\n // If we have more than 4 spaces, the indent is 1\n // (the rest is just indented code block)\n if (indentAfterMarker > 4) { indentAfterMarker = 1; }\n\n // \" - test\"\n // ^^^^^ - calculating total length of this thing\n indent = initial + indentAfterMarker;\n\n // Run subparser & write tokens\n token = state.push('list_item_open', 'li', 1);\n token.markup = String.fromCharCode(markerCharCode);\n token.map = itemLines = [ startLine, 0 ];\n\n oldIndent = state.blkIndent;\n oldTight = state.tight;\n oldTShift = state.tShift[startLine];\n oldLIndent = state.sCount[startLine];\n oldParentType = state.parentType;\n state.blkIndent = indent;\n state.tight = true;\n state.parentType = 'list';\n state.tShift[startLine] = contentStart - state.bMarks[startLine];\n state.sCount[startLine] = offset;\n\n if (contentStart >= max && state.isEmpty(startLine + 1)) {\n // workaround for this case\n // (list item is empty, list terminates before \"foo\"):\n // ~~~~~~~~\n // -\n //\n // foo\n // ~~~~~~~~\n state.line = Math.min(state.line + 2, endLine);\n } else {\n state.md.block.tokenize(state, startLine, endLine, true);\n }\n\n // If any of list item is tight, mark list as tight\n if (!state.tight || prevEmptyEnd) {\n tight = false;\n }\n // Item become loose if finish with empty line,\n // but we should filter last element, because it means list finish\n prevEmptyEnd = (state.line - startLine) > 1 && state.isEmpty(state.line - 1);\n\n state.blkIndent = oldIndent;\n state.tShift[startLine] = oldTShift;\n state.sCount[startLine] = oldLIndent;\n state.tight = oldTight;\n state.parentType = oldParentType;\n\n token = state.push('list_item_close', 'li', -1);\n token.markup = String.fromCharCode(markerCharCode);\n\n nextLine = startLine = state.line;\n itemLines[1] = nextLine;\n contentStart = state.bMarks[startLine];\n\n if (nextLine >= endLine) { break; }\n\n if (state.isEmpty(nextLine)) {\n break;\n }\n\n //\n // Try to check if list is terminated or continued.\n //\n if (state.sCount[nextLine] < state.blkIndent) { break; }\n\n // fail if terminating block found\n terminate = false;\n for (i = 0, l = terminatorRules.length; i < l; i++) {\n if (terminatorRules[i](state, nextLine, endLine, true)) {\n terminate = true;\n break;\n }\n }\n if (terminate) { break; }\n\n // fail if list has another type\n if (isOrdered) {\n posAfterMarker = skipOrderedListMarker(state, nextLine);\n if (posAfterMarker < 0) { break; }\n } else {\n posAfterMarker = skipBulletListMarker(state, nextLine);\n if (posAfterMarker < 0) { break; }\n }\n\n if (markerCharCode !== state.src.charCodeAt(posAfterMarker - 1)) { break; }\n }\n\n // Finilize list\n if (isOrdered) {\n token = state.push('ordered_list_close', 'ol', -1);\n } else {\n token = state.push('bullet_list_close', 'ul', -1);\n }\n token.markup = String.fromCharCode(markerCharCode);\n\n listLines[1] = nextLine;\n state.line = nextLine;\n\n // mark paragraphs tight if needed\n if (tight) {\n markTightParagraphs(state, listTokIdx);\n }\n\n return true;\n};\n","'use strict';\n\n\nmodule.exports = function ins_plugin(md) {\n // Insert each marker as a separate text token, and add it to delimiter list\n //\n function tokenize(state, silent) {\n var i, scanned, token, len, ch,\n start = state.pos,\n marker = state.src.charCodeAt(start);\n\n if (silent) { return false; }\n\n if (marker !== 0x3D/* = */) { return false; }\n\n scanned = state.scanDelims(state.pos, true);\n len = scanned.length;\n ch = String.fromCharCode(marker);\n\n if (len < 2) { return false; }\n\n if (len % 2) {\n token = state.push('text', '', 0);\n token.content = ch;\n len--;\n }\n\n for (i = 0; i < len; i += 2) {\n token = state.push('text', '', 0);\n token.content = ch + ch;\n\n state.delimiters.push({\n marker: marker,\n jump: i,\n token: state.tokens.length - 1,\n level: state.level,\n end: -1,\n open: scanned.can_open,\n close: scanned.can_close\n });\n }\n\n state.pos += scanned.length;\n\n return true;\n }\n\n\n // Walk through delimiter list and replace text tokens with tags\n //\n function postProcess(state) {\n var i, j,\n startDelim,\n endDelim,\n token,\n loneMarkers = [],\n delimiters = state.delimiters,\n max = state.delimiters.length;\n\n for (i = 0; i < max; i++) {\n startDelim = delimiters[i];\n\n if (startDelim.marker !== 0x3D/* = */) {\n continue;\n }\n\n if (startDelim.end === -1) {\n continue;\n }\n\n endDelim = delimiters[startDelim.end];\n\n token = state.tokens[startDelim.token];\n token.type = 'mark_open';\n token.tag = 'mark';\n token.nesting = 1;\n token.markup = '==';\n token.content = '';\n\n token = state.tokens[endDelim.token];\n token.type = 'mark_close';\n token.tag = 'mark';\n token.nesting = -1;\n token.markup = '==';\n token.content = '';\n\n if (state.tokens[endDelim.token - 1].type === 'text' &&\n state.tokens[endDelim.token - 1].content === '=') {\n\n loneMarkers.push(endDelim.token - 1);\n }\n }\n\n // If a marker sequence has an odd number of characters, it's splitted\n // like this: `~~~~~` -> `~` + `~~` + `~~`, leaving one marker at the\n // start of the sequence.\n //\n // So, we have to move all those markers after subsequent s_close tags.\n //\n while (loneMarkers.length) {\n i = loneMarkers.pop();\n j = i + 1;\n\n while (j < state.tokens.length && state.tokens[j].type === 'mark_close') {\n j++;\n }\n\n j--;\n\n if (i !== j) {\n token = state.tokens[j];\n state.tokens[j] = state.tokens[i];\n state.tokens[i] = token;\n }\n }\n }\n\n md.inline.ruler.before('emphasis', 'mark', tokenize);\n md.inline.ruler2.before('emphasis', 'mark', postProcess);\n};\n","// Normalize input string\n\n'use strict';\n\n\nvar NEWLINES_RE = /\\r[\\n\\u0085]?|[\\u2424\\u2028\\u0085]/g;\nvar NULL_RE = /\\u0000/g;\n\n\nmodule.exports = function inline(state) {\n var str;\n\n // Normalize newlines\n str = state.src.replace(NEWLINES_RE, '\\n');\n\n // Replace NULL characters\n str = str.replace(NULL_RE, '\\uFFFD');\n\n state.src = str;\n};\n","/** internal\n * class ParserInline\n *\n * Tokenizes paragraph content.\n **/\n'use strict';\n\n\nvar Ruler = require('./ruler');\n\n\n////////////////////////////////////////////////////////////////////////////////\n// Parser rules\n\nvar _rules = [\n [ 'text', require('./rules_inline/text') ],\n [ 'newline', require('./rules_inline/newline') ],\n [ 'escape', require('./rules_inline/escape') ],\n [ 'backticks', require('./rules_inline/backticks') ],\n [ 'strikethrough', require('./rules_inline/strikethrough').tokenize ],\n [ 'emphasis', require('./rules_inline/emphasis').tokenize ],\n [ 'link', require('./rules_inline/link') ],\n [ 'image', require('./rules_inline/image') ],\n [ 'autolink', require('./rules_inline/autolink') ],\n [ 'html_inline', require('./rules_inline/html_inline') ],\n [ 'entity', require('./rules_inline/entity') ]\n];\n\nvar _rules2 = [\n [ 'balance_pairs', require('./rules_inline/balance_pairs') ],\n [ 'strikethrough', require('./rules_inline/strikethrough').postProcess ],\n [ 'emphasis', require('./rules_inline/emphasis').postProcess ],\n [ 'text_collapse', require('./rules_inline/text_collapse') ]\n];\n\n\n/**\n * new ParserInline()\n **/\nfunction ParserInline() {\n var i;\n\n /**\n * ParserInline#ruler -> Ruler\n *\n * [[Ruler]] instance. Keep configuration of inline rules.\n **/\n this.ruler = new Ruler();\n\n for (i = 0; i < _rules.length; i++) {\n this.ruler.push(_rules[i][0], _rules[i][1]);\n }\n\n /**\n * ParserInline#ruler2 -> Ruler\n *\n * [[Ruler]] instance. Second ruler used for post-processing\n * (e.g. in emphasis-like rules).\n **/\n this.ruler2 = new Ruler();\n\n for (i = 0; i < _rules2.length; i++) {\n this.ruler2.push(_rules2[i][0], _rules2[i][1]);\n }\n}\n\n\n// Skip single token by running all rules in validation mode;\n// returns `true` if any rule reported success\n//\nParserInline.prototype.skipToken = function (state) {\n var ok, i, pos = state.pos,\n rules = this.ruler.getRules(''),\n len = rules.length,\n maxNesting = state.md.options.maxNesting,\n cache = state.cache;\n\n\n if (typeof cache[pos] !== 'undefined') {\n state.pos = cache[pos];\n return;\n }\n\n if (state.level < maxNesting) {\n for (i = 0; i < len; i++) {\n // Increment state.level and decrement it later to limit recursion.\n // It's harmless to do here, because no tokens are created. But ideally,\n // we'd need a separate private state variable for this purpose.\n //\n state.level++;\n ok = rules[i](state, true);\n state.level--;\n\n if (ok) { break; }\n }\n } else {\n // Too much nesting, just skip until the end of the paragraph.\n //\n // NOTE: this will cause links to behave incorrectly in the following case,\n // when an amount of `[` is exactly equal to `maxNesting + 1`:\n //\n // [[[[[[[[[[[[[[[[[[[[[foo]()\n //\n // TODO: remove this workaround when CM standard will allow nested links\n // (we can replace it by preventing links from being parsed in\n // validation mode)\n //\n state.pos = state.posMax;\n }\n\n if (!ok) { state.pos++; }\n cache[pos] = state.pos;\n};\n\n\n// Generate tokens for input range\n//\nParserInline.prototype.tokenize = function (state) {\n var ok, i,\n rules = this.ruler.getRules(''),\n len = rules.length,\n end = state.posMax,\n maxNesting = state.md.options.maxNesting;\n\n while (state.pos < end) {\n // Try all possible rules.\n // On success, rule should:\n //\n // - update `state.pos`\n // - update `state.tokens`\n // - return true\n\n if (state.level < maxNesting) {\n for (i = 0; i < len; i++) {\n ok = rules[i](state, false);\n if (ok) { break; }\n }\n }\n\n if (ok) {\n if (state.pos >= end) { break; }\n continue;\n }\n\n state.pending += state.src[state.pos++];\n }\n\n if (state.pending) {\n state.pushPending();\n }\n};\n\n\n/**\n * ParserInline.parse(str, md, env, outTokens)\n *\n * Process input string and push inline tokens into `outTokens`\n **/\nParserInline.prototype.parse = function (str, md, env, outTokens) {\n var i, rules, len;\n var state = new this.State(str, md, env, outTokens);\n\n this.tokenize(state);\n\n rules = this.ruler2.getRules('');\n len = rules.length;\n\n for (i = 0; i < len; i++) {\n rules[i](state);\n }\n};\n\n\nParserInline.prototype.State = require('./rules_inline/state_inline');\n\n\nmodule.exports = ParserInline;\n","// Enclose abbreviations in tags\n//\n'use strict';\n\n\nmodule.exports = function sub_plugin(md) {\n var escapeRE = md.utils.escapeRE,\n arrayReplaceAt = md.utils.arrayReplaceAt;\n\n // ASCII characters in Cc, Sc, Sm, Sk categories we should terminate on;\n // you can check character classes here:\n // http://www.unicode.org/Public/UNIDATA/UnicodeData.txt\n var OTHER_CHARS = ' \\r\\n$+<=>^`|~';\n\n var UNICODE_PUNCT_RE = md.utils.lib.ucmicro.P.source;\n var UNICODE_SPACE_RE = md.utils.lib.ucmicro.Z.source;\n\n\n function abbr_def(state, startLine, endLine, silent) {\n var label, title, ch, labelStart, labelEnd,\n pos = state.bMarks[startLine] + state.tShift[startLine],\n max = state.eMarks[startLine];\n\n if (pos + 2 >= max) { return false; }\n\n if (state.src.charCodeAt(pos++) !== 0x2A/* * */) { return false; }\n if (state.src.charCodeAt(pos++) !== 0x5B/* [ */) { return false; }\n\n labelStart = pos;\n\n for (; pos < max; pos++) {\n ch = state.src.charCodeAt(pos);\n if (ch === 0x5B /* [ */) {\n return false;\n } else if (ch === 0x5D /* ] */) {\n labelEnd = pos;\n break;\n } else if (ch === 0x5C /* \\ */) {\n pos++;\n }\n }\n\n if (labelEnd < 0 || state.src.charCodeAt(labelEnd + 1) !== 0x3A/* : */) {\n return false;\n }\n\n if (silent) { return true; }\n\n label = state.src.slice(labelStart, labelEnd).replace(/\\\\(.)/g, '$1');\n title = state.src.slice(labelEnd + 2, max).trim();\n if (label.length === 0) { return false; }\n if (title.length === 0) { return false; }\n if (!state.env.abbreviations) { state.env.abbreviations = {}; }\n // prepend ':' to avoid conflict with Object.prototype members\n if (typeof state.env.abbreviations[':' + label] === 'undefined') {\n state.env.abbreviations[':' + label] = title;\n }\n\n state.line = startLine + 1;\n return true;\n }\n\n\n function abbr_replace(state) {\n var i, j, l, tokens, token, text, nodes, pos, reg, m, regText, regSimple,\n currentToken,\n blockTokens = state.tokens;\n\n if (!state.env.abbreviations) { return; }\n\n regSimple = new RegExp('(?:' +\n Object.keys(state.env.abbreviations).map(function (x) {\n return x.substr(1);\n }).sort(function (a, b) {\n return b.length - a.length;\n }).map(escapeRE).join('|') +\n ')');\n\n regText = '(^|' + UNICODE_PUNCT_RE + '|' + UNICODE_SPACE_RE +\n '|[' + OTHER_CHARS.split('').map(escapeRE).join('') + '])'\n + '(' + Object.keys(state.env.abbreviations).map(function (x) {\n return x.substr(1);\n }).sort(function (a, b) {\n return b.length - a.length;\n }).map(escapeRE).join('|') + ')'\n + '($|' + UNICODE_PUNCT_RE + '|' + UNICODE_SPACE_RE +\n '|[' + OTHER_CHARS.split('').map(escapeRE).join('') + '])';\n\n reg = new RegExp(regText, 'g');\n\n for (j = 0, l = blockTokens.length; j < l; j++) {\n if (blockTokens[j].type !== 'inline') { continue; }\n tokens = blockTokens[j].children;\n\n // We scan from the end, to keep position when new tags added.\n for (i = tokens.length - 1; i >= 0; i--) {\n currentToken = tokens[i];\n if (currentToken.type !== 'text') { continue; }\n\n pos = 0;\n text = currentToken.content;\n reg.lastIndex = 0;\n nodes = [];\n\n // fast regexp run to determine whether there are any abbreviated words\n // in the current token\n if (!regSimple.test(text)) { continue; }\n\n while ((m = reg.exec(text))) {\n if (m.index > 0 || m[1].length > 0) {\n token = new state.Token('text', '', 0);\n token.content = text.slice(pos, m.index + m[1].length);\n nodes.push(token);\n }\n\n token = new state.Token('abbr_open', 'abbr', 1);\n token.attrs = [ [ 'title', state.env.abbreviations[':' + m[2]] ] ];\n nodes.push(token);\n\n token = new state.Token('text', '', 0);\n token.content = m[2];\n nodes.push(token);\n\n token = new state.Token('abbr_close', 'abbr', -1);\n nodes.push(token);\n\n reg.lastIndex -= m[3].length;\n pos = reg.lastIndex;\n }\n\n if (!nodes.length) { continue; }\n\n if (pos < text.length) {\n token = new state.Token('text', '', 0);\n token.content = text.slice(pos);\n nodes.push(token);\n }\n\n // replace current node\n blockTokens[j].children = tokens = arrayReplaceAt(tokens, i, nodes);\n }\n }\n }\n\n md.block.ruler.before('reference', 'abbr_def', abbr_def, { alt: [ 'paragraph', 'reference' ] });\n\n md.core.ruler.after('linkify', 'abbr_replace', abbr_replace);\n};\n","// Process ~subscript~\n\n'use strict';\n\n// same as UNESCAPE_MD_RE plus a space\nvar UNESCAPE_RE = /\\\\([ \\\\!\"#$%&'()*+,.\\/:;<=>?@[\\]^_`{|}~-])/g;\n\n\nfunction subscript(state, silent) {\n var found,\n content,\n token,\n max = state.posMax,\n start = state.pos;\n\n if (state.src.charCodeAt(start) !== 0x7E/* ~ */) { 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) === 0x7E/* ~ */) {\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('sub_open', 'sub', 1);\n token.markup = '~';\n\n token = state.push('text', '', 0);\n token.content = content.replace(UNESCAPE_RE, '$1');\n\n token = state.push('sub_close', 'sub', -1);\n token.markup = '~';\n\n state.pos = state.posMax + 1;\n state.posMax = max;\n return true;\n}\n\n\nmodule.exports = function sub_plugin(md) {\n md.inline.ruler.after('emphasis', 'sub', subscript);\n};\n","// Just a shortcut for bulk export\n'use strict';\n\n\nexports.parseLinkLabel = require('./parse_link_label');\nexports.parseLinkDestination = require('./parse_link_destination');\nexports.parseLinkTitle = require('./parse_link_title');\n","// Regexps to match html elements\n\n'use strict';\n\nvar attr_name = '[a-zA-Z_:][a-zA-Z0-9:._-]*';\n\nvar unquoted = '[^\"\\'=<>`\\\\x00-\\\\x20]+';\nvar single_quoted = \"'[^']*'\";\nvar double_quoted = '\"[^\"]*\"';\n\nvar attr_value = '(?:' + unquoted + '|' + single_quoted + '|' + double_quoted + ')';\n\nvar attribute = '(?:\\\\s+' + attr_name + '(?:\\\\s*=\\\\s*' + attr_value + ')?)';\n\nvar open_tag = '<[A-Za-z][A-Za-z0-9\\\\-]*' + attribute + '*\\\\s*\\\\/?>';\n\nvar close_tag = '<\\\\/[A-Za-z][A-Za-z0-9\\\\-]*\\\\s*>';\nvar comment = '|';\nvar processing = '<[?].*?[?]>';\nvar declaration = ']*>';\nvar cdata = '';\n\nvar HTML_TAG_RE = new RegExp('^(?:' + open_tag + '|' + close_tag + '|' + comment +\n '|' + processing + '|' + declaration + '|' + cdata + ')');\nvar HTML_OPEN_CLOSE_TAG_RE = new RegExp('^(?:' + open_tag + '|' + close_tag + ')');\n\nmodule.exports.HTML_TAG_RE = HTML_TAG_RE;\nmodule.exports.HTML_OPEN_CLOSE_TAG_RE = HTML_OPEN_CLOSE_TAG_RE;\n","// Process html entity - {, ¯, ", ...\n\n'use strict';\n\nvar entities = require('../common/entities');\nvar has = require('../common/utils').has;\nvar isValidEntityCode = require('../common/utils').isValidEntityCode;\nvar fromCodePoint = require('../common/utils').fromCodePoint;\n\n\nvar DIGITAL_RE = /^&#((?:x[a-f0-9]{1,8}|[0-9]{1,8}));/i;\nvar NAMED_RE = /^&([a-z][a-z0-9]{1,31});/i;\n\n\nmodule.exports = function entity(state, silent) {\n var ch, code, match, pos = state.pos, max = state.posMax;\n\n if (state.src.charCodeAt(pos) !== 0x26/* & */) { return false; }\n\n if (pos + 1 < max) {\n ch = state.src.charCodeAt(pos + 1);\n\n if (ch === 0x23 /* # */) {\n match = state.src.slice(pos).match(DIGITAL_RE);\n if (match) {\n if (!silent) {\n code = match[1][0].toLowerCase() === 'x' ? parseInt(match[1].slice(1), 16) : parseInt(match[1], 10);\n state.pending += isValidEntityCode(code) ? fromCodePoint(code) : fromCodePoint(0xFFFD);\n }\n state.pos += match[0].length;\n return true;\n }\n } else {\n match = state.src.slice(pos).match(NAMED_RE);\n if (match) {\n if (has(entities, match[1])) {\n if (!silent) { state.pending += entities[match[1]]; }\n state.pos += match[0].length;\n return true;\n }\n }\n }\n }\n\n if (!silent) { state.pending += '&'; }\n state.pos++;\n return true;\n};\n","// HTML block\n\n'use strict';\n\n\nvar block_names = require('../common/html_blocks');\nvar HTML_OPEN_CLOSE_TAG_RE = require('../common/html_re').HTML_OPEN_CLOSE_TAG_RE;\n\n// An array of opening and corresponding closing sequences for html tags,\n// last argument defines whether it can terminate a paragraph or not\n//\nvar HTML_SEQUENCES = [\n [ /^<(script|pre|style)(?=(\\s|>|$))/i, /<\\/(script|pre|style)>/i, true ],\n [ /^/, true ],\n [ /^<\\?/, /\\?>/, true ],\n [ /^/, true ],\n [ /^/, true ],\n [ new RegExp('^|$))', 'i'), /^$/, true ],\n [ new RegExp(HTML_OPEN_CLOSE_TAG_RE.source + '\\\\s*$'), /^$/, false ]\n];\n\n\nmodule.exports = function html_block(state, startLine, endLine, silent) {\n var i, nextLine, token, lineText,\n pos = state.bMarks[startLine] + state.tShift[startLine],\n max = state.eMarks[startLine];\n\n if (!state.md.options.html) { return false; }\n\n if (state.src.charCodeAt(pos) !== 0x3C/* < */) { return false; }\n\n lineText = state.src.slice(pos, max);\n\n for (i = 0; i < HTML_SEQUENCES.length; i++) {\n if (HTML_SEQUENCES[i][0].test(lineText)) { break; }\n }\n\n if (i === HTML_SEQUENCES.length) { return false; }\n\n if (silent) {\n // true if this sequence can be a terminator, false otherwise\n return HTML_SEQUENCES[i][2];\n }\n\n nextLine = startLine + 1;\n\n // If we are here - we detected HTML block.\n // Let's roll down till block end.\n if (!HTML_SEQUENCES[i][1].test(lineText)) {\n for (; nextLine < endLine; nextLine++) {\n if (state.sCount[nextLine] < state.blkIndent) { break; }\n\n pos = state.bMarks[nextLine] + state.tShift[nextLine];\n max = state.eMarks[nextLine];\n lineText = state.src.slice(pos, max);\n\n if (HTML_SEQUENCES[i][1].test(lineText)) {\n if (lineText.length !== 0) { nextLine++; }\n break;\n }\n }\n }\n\n state.line = nextLine;\n\n token = state.push('html_block', '', 0);\n token.map = [ startLine, nextLine ];\n token.content = state.getLines(startLine, nextLine, state.blkIndent, true);\n\n return true;\n};\n","// Proceess escaped chars and hardbreaks\n\n'use strict';\n\nvar isSpace = require('../common/utils').isSpace;\n\nvar ESCAPED = [];\n\nfor (var i = 0; i < 256; i++) { ESCAPED.push(0); }\n\n'\\\\!\"#$%&\\'()*+,./:;<=>?@[]^_`{|}~-'\n .split('').forEach(function (ch) { ESCAPED[ch.charCodeAt(0)] = 1; });\n\n\nmodule.exports = function escape(state, silent) {\n var ch, pos = state.pos, max = state.posMax;\n\n if (state.src.charCodeAt(pos) !== 0x5C/* \\ */) { return false; }\n\n pos++;\n\n if (pos < max) {\n ch = state.src.charCodeAt(pos);\n\n if (ch < 256 && ESCAPED[ch] !== 0) {\n if (!silent) { state.pending += state.src[pos]; }\n state.pos += 2;\n return true;\n }\n\n if (ch === 0x0A) {\n if (!silent) {\n state.push('hardbreak', 'br', 0);\n }\n\n pos++;\n // skip leading whitespaces from next line\n while (pos < max) {\n ch = state.src.charCodeAt(pos);\n if (!isSpace(ch)) { break; }\n pos++;\n }\n\n state.pos = pos;\n return true;\n }\n }\n\n if (!silent) { state.pending += '\\\\'; }\n state.pos++;\n return true;\n};\n","// Core state object\n//\n'use strict';\n\nvar Token = require('../token');\n\n\nfunction StateCore(src, md, env) {\n this.src = src;\n this.env = env;\n this.tokens = [];\n this.inlineMode = false;\n this.md = md; // link to parser instance\n}\n\n// re-export Token class to use in core rules\nStateCore.prototype.Token = Token;\n\n\nmodule.exports = StateCore;\n","/** internal\n * class ParserBlock\n *\n * Block-level tokenizer.\n **/\n'use strict';\n\n\nvar Ruler = require('./ruler');\n\n\nvar _rules = [\n // First 2 params - rule name & source. Secondary array - list of rules,\n // which can be terminated by this one.\n [ 'table', require('./rules_block/table'), [ 'paragraph', 'reference' ] ],\n [ 'code', require('./rules_block/code') ],\n [ 'fence', require('./rules_block/fence'), [ 'paragraph', 'reference', 'blockquote', 'list' ] ],\n [ 'blockquote', require('./rules_block/blockquote'), [ 'paragraph', 'reference', 'list' ] ],\n [ 'hr', require('./rules_block/hr'), [ 'paragraph', 'reference', 'blockquote', 'list' ] ],\n [ 'list', require('./rules_block/list'), [ 'paragraph', 'reference', 'blockquote' ] ],\n [ 'reference', require('./rules_block/reference') ],\n [ 'heading', require('./rules_block/heading'), [ 'paragraph', 'reference', 'blockquote' ] ],\n [ 'lheading', require('./rules_block/lheading') ],\n [ 'html_block', require('./rules_block/html_block'), [ 'paragraph', 'reference', 'blockquote' ] ],\n [ 'paragraph', require('./rules_block/paragraph') ]\n];\n\n\n/**\n * new ParserBlock()\n **/\nfunction ParserBlock() {\n /**\n * ParserBlock#ruler -> Ruler\n *\n * [[Ruler]] instance. Keep configuration of block rules.\n **/\n this.ruler = new Ruler();\n\n for (var i = 0; i < _rules.length; i++) {\n this.ruler.push(_rules[i][0], _rules[i][1], { alt: (_rules[i][2] || []).slice() });\n }\n}\n\n\n// Generate tokens for input range\n//\nParserBlock.prototype.tokenize = function (state, startLine, endLine) {\n var ok, i,\n rules = this.ruler.getRules(''),\n len = rules.length,\n line = startLine,\n hasEmptyLines = false,\n maxNesting = state.md.options.maxNesting;\n\n while (line < endLine) {\n state.line = line = state.skipEmptyLines(line);\n if (line >= endLine) { break; }\n\n // Termination condition for nested calls.\n // Nested calls currently used for blockquotes & lists\n if (state.sCount[line] < state.blkIndent) { break; }\n\n // If nesting level exceeded - skip tail to the end. That's not ordinary\n // situation and we should not care about content.\n if (state.level >= maxNesting) {\n state.line = endLine;\n break;\n }\n\n // Try all possible rules.\n // On success, rule should:\n //\n // - update `state.line`\n // - update `state.tokens`\n // - return true\n\n for (i = 0; i < len; i++) {\n ok = rules[i](state, line, endLine, false);\n if (ok) { break; }\n }\n\n // set state.tight iff we had an empty line before current tag\n // i.e. latest empty line should not count\n state.tight = !hasEmptyLines;\n\n // paragraph might \"eat\" one newline after it in nested lists\n if (state.isEmpty(state.line - 1)) {\n hasEmptyLines = true;\n }\n\n line = state.line;\n\n if (line < endLine && state.isEmpty(line)) {\n hasEmptyLines = true;\n line++;\n\n // two empty lines should stop the parser in list mode\n if (line < endLine && state.parentType === 'list' && state.isEmpty(line)) { break; }\n state.line = line;\n }\n }\n};\n\n\n/**\n * ParserBlock.parse(str, md, env, outTokens)\n *\n * Process input string and push block tokens into `outTokens`\n **/\nParserBlock.prototype.parse = function (src, md, env, outTokens) {\n var state;\n\n if (!src) { return; }\n\n state = new this.State(src, md, env, outTokens);\n\n this.tokenize(state, state.line, state.lineMax);\n};\n\n\nParserBlock.prototype.State = require('./rules_block/state_block');\n\n\nmodule.exports = ParserBlock;\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","/**\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","// 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","// 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","// 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","// 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 `~` + `~~` + `~~`, leaving one marker at the\n // start of the sequence.\n //\n // So, we have to move all those markers after subsequent s_close tags.\n //\n while (loneMarkers.length) {\n i = loneMarkers.pop();\n j = i + 1;\n\n while (j < state.tokens.length && state.tokens[j].type === 's_close') {\n j++;\n }\n\n j--;\n\n if (i !== j) {\n token = state.tokens[j];\n state.tokens[j] = state.tokens[i];\n state.tokens[i] = token;\n }\n }\n};\n","// Process ![image]( \"title\")\n\n'use strict';\n\nvar parseLinkLabel = require('../helpers/parse_link_label');\nvar parseLinkDestination = require('../helpers/parse_link_destination');\nvar parseLinkTitle = require('../helpers/parse_link_title');\nvar normalizeReference = require('../common/utils').normalizeReference;\nvar isSpace = require('../common/utils').isSpace;\n\n\nmodule.exports = function image(state, silent) {\n var attrs,\n code,\n content,\n label,\n labelEnd,\n labelStart,\n pos,\n ref,\n res,\n title,\n token,\n tokens,\n start,\n href = '',\n oldPos = state.pos,\n max = state.posMax;\n\n if (state.src.charCodeAt(state.pos) !== 0x21/* ! */) { return false; }\n if (state.src.charCodeAt(state.pos + 1) !== 0x5B/* [ */) { return false; }\n\n labelStart = state.pos + 2;\n labelEnd = parseLinkLabel(state, state.pos + 1, false);\n\n // parser failed to find ']', so it's not a valid link\n if (labelEnd < 0) { return false; }\n\n pos = labelEnd + 1;\n if (pos < max && state.src.charCodeAt(pos) === 0x28/* ( */) {\n //\n // Inline link\n //\n\n // [link]( \"title\" )\n // ^^ skipping these spaces\n pos++;\n for (; pos < max; pos++) {\n code = state.src.charCodeAt(pos);\n if (!isSpace(code) && code !== 0x0A) { break; }\n }\n if (pos >= max) { return false; }\n\n // [link]( \"title\" )\n // ^^^^^^ parsing link destination\n start = pos;\n res = parseLinkDestination(state.src, pos, state.posMax);\n if (res.ok) {\n href = state.md.normalizeLink(res.str);\n if (state.md.validateLink(href)) {\n pos = res.pos;\n } else {\n href = '';\n }\n }\n\n // [link]( \"title\" )\n // ^^ skipping these spaces\n start = pos;\n for (; pos < max; pos++) {\n code = state.src.charCodeAt(pos);\n if (!isSpace(code) && code !== 0x0A) { break; }\n }\n\n // [link]( \"title\" )\n // ^^^^^^^ parsing link title\n res = parseLinkTitle(state.src, pos, state.posMax);\n if (pos < max && start !== pos && res.ok) {\n title = res.str;\n pos = res.pos;\n\n // [link]( \"title\" )\n // ^^ skipping these spaces\n for (; pos < max; pos++) {\n code = state.src.charCodeAt(pos);\n if (!isSpace(code) && code !== 0x0A) { break; }\n }\n } else {\n title = '';\n }\n\n if (pos >= max || state.src.charCodeAt(pos) !== 0x29/* ) */) {\n state.pos = oldPos;\n return false;\n }\n pos++;\n } else {\n //\n // Link reference\n //\n if (typeof state.env.references === 'undefined') { return false; }\n\n if (pos < max && state.src.charCodeAt(pos) === 0x5B/* [ */) {\n start = pos + 1;\n pos = parseLinkLabel(state, pos);\n if (pos >= 0) {\n label = state.src.slice(start, pos++);\n } else {\n pos = labelEnd + 1;\n }\n } else {\n pos = labelEnd + 1;\n }\n\n // covers label === '' and label === undefined\n // (collapsed reference link and shortcut reference link respectively)\n if (!label) { label = state.src.slice(labelStart, labelEnd); }\n\n ref = state.env.references[normalizeReference(label)];\n if (!ref) {\n state.pos = oldPos;\n return false;\n }\n href = ref.href;\n title = ref.title;\n }\n\n //\n // We found the end of the link, and know for a fact it's a valid link;\n // so all that's left to do is to call tokenizer.\n //\n if (!silent) {\n content = state.src.slice(labelStart, labelEnd);\n\n state.md.inline.parse(\n content,\n state.md,\n state.env,\n tokens = []\n );\n\n token = state.push('image', 'img', 0);\n token.attrs = attrs = [ [ 'src', href ], [ 'alt', '' ] ];\n token.children = tokens;\n token.content = content;\n\n if (title) {\n attrs.push([ 'title', title ]);\n }\n }\n\n state.pos = pos;\n state.posMax = max;\n return true;\n};\n","// Replace link-like texts with link nodes.\n//\n// Currently restricted by `md.validateLink()` to http/https/ftp\n//\n'use strict';\n\n\nvar arrayReplaceAt = require('../common/utils').arrayReplaceAt;\n\n\nfunction isLinkOpen(str) {\n return /^\\s]/i.test(str);\n}\nfunction isLinkClose(str) {\n return /^<\\/a\\s*>/i.test(str);\n}\n\n\nmodule.exports = function linkify(state) {\n var i, j, l, tokens, token, currentToken, nodes, ln, text, pos, lastPos,\n level, htmlLinkLevel, url, fullUrl, urlText,\n blockTokens = state.tokens,\n links;\n\n if (!state.md.options.linkify) { return; }\n\n for (j = 0, l = blockTokens.length; j < l; j++) {\n if (blockTokens[j].type !== 'inline' ||\n !state.md.linkify.pretest(blockTokens[j].content)) {\n continue;\n }\n\n tokens = blockTokens[j].children;\n\n htmlLinkLevel = 0;\n\n // We scan from the end, to keep position when new tags added.\n // Use reversed logic in links start/end match\n for (i = tokens.length - 1; i >= 0; i--) {\n currentToken = tokens[i];\n\n // Skip content of markdown links\n if (currentToken.type === 'link_close') {\n i--;\n while (tokens[i].level !== currentToken.level && tokens[i].type !== 'link_open') {\n i--;\n }\n continue;\n }\n\n // Skip content of html tag links\n if (currentToken.type === 'html_inline') {\n if (isLinkOpen(currentToken.content) && htmlLinkLevel > 0) {\n htmlLinkLevel--;\n }\n if (isLinkClose(currentToken.content)) {\n htmlLinkLevel++;\n }\n }\n if (htmlLinkLevel > 0) { continue; }\n\n if (currentToken.type === 'text' && state.md.linkify.test(currentToken.content)) {\n\n text = currentToken.content;\n links = state.md.linkify.match(text);\n\n // Now split string to nodes\n nodes = [];\n level = currentToken.level;\n lastPos = 0;\n\n for (ln = 0; ln < links.length; ln++) {\n\n url = links[ln].url;\n fullUrl = state.md.normalizeLink(url);\n if (!state.md.validateLink(fullUrl)) { continue; }\n\n urlText = links[ln].text;\n\n // Linkifier might send raw hostnames like \"example.com\", where url\n // starts with domain name. So we prepend http:// in those cases,\n // and remove it afterwards.\n //\n if (!links[ln].schema) {\n urlText = state.md.normalizeLinkText('http://' + urlText).replace(/^http:\\/\\//, '');\n } else if (links[ln].schema === 'mailto:' && !/^mailto:/i.test(urlText)) {\n urlText = state.md.normalizeLinkText('mailto:' + urlText).replace(/^mailto:/, '');\n } else {\n urlText = state.md.normalizeLinkText(urlText);\n }\n\n pos = links[ln].index;\n\n if (pos > lastPos) {\n token = new state.Token('text', '', 0);\n token.content = text.slice(lastPos, pos);\n token.level = level;\n nodes.push(token);\n }\n\n token = new state.Token('link_open', 'a', 1);\n token.attrs = [ [ 'href', fullUrl ] ];\n token.level = level++;\n token.markup = 'linkify';\n token.info = 'auto';\n nodes.push(token);\n\n token = new state.Token('text', '', 0);\n token.content = urlText;\n token.level = level;\n nodes.push(token);\n\n token = new state.Token('link_close', 'a', -1);\n token.level = --level;\n token.markup = 'linkify';\n token.info = 'auto';\n nodes.push(token);\n\n lastPos = links[ln].lastIndex;\n }\n if (lastPos < text.length) {\n token = new state.Token('text', '', 0);\n token.content = text.slice(lastPos);\n token.level = level;\n nodes.push(token);\n }\n\n // replace current node\n blockTokens[j].children = tokens = arrayReplaceAt(tokens, i, nodes);\n }\n }\n }\n};\n","// Code block (4 spaces padded)\n\n'use strict';\n\n\nmodule.exports = function code(state, startLine, endLine/*, silent*/) {\n var nextLine, last, token, emptyLines = 0;\n\n if (state.sCount[startLine] - state.blkIndent < 4) { return false; }\n\n last = nextLine = startLine + 1;\n\n while (nextLine < endLine) {\n if (state.isEmpty(nextLine)) {\n emptyLines++;\n\n // workaround for lists: 2 blank lines should terminate indented\n // code block, but not fenced code block\n if (emptyLines >= 2 && state.parentType === 'list') {\n break;\n }\n\n nextLine++;\n continue;\n }\n\n emptyLines = 0;\n\n if (state.sCount[nextLine] - state.blkIndent >= 4) {\n nextLine++;\n last = nextLine;\n continue;\n }\n break;\n }\n\n state.line = last;\n\n token = state.push('code_block', 'code', 0);\n token.content = state.getLines(startLine, last, 4 + state.blkIndent, true);\n token.map = [ startLine, state.line ];\n\n return true;\n};\n","'use strict';\n\nmodule.exports = function inline(state) {\n var tokens = state.tokens, tok, i, l;\n\n // Parse inlines\n for (i = 0, l = tokens.length; i < l; i++) {\n tok = tokens[i];\n if (tok.type === 'inline') {\n state.md.inline.parse(tok.content, state.md, state.env, tok.children);\n }\n }\n};\n","/* Process inline math */\n/*\nLike markdown-it-simplemath, this is a stripped down, simplified version of:\nhttps://github.com/runarberg/markdown-it-math\n\nIt differs in that it takes (a subset of) LaTeX as input and relies on KaTeX\nfor rendering output.\n*/\n\n/*jslint node: true */\n'use strict';\n\nvar katex = require('katex');\n\n// Test if potential opening or closing delimieter\n// Assumes that there is a \"$\" at state.src[pos]\nfunction isValidDelim(state, pos) {\n var prevChar, nextChar,\n max = state.posMax,\n can_open = true,\n can_close = true;\n\n prevChar = pos > 0 ? state.src.charCodeAt(pos - 1) : -1;\n nextChar = pos + 1 <= max ? state.src.charCodeAt(pos + 1) : -1;\n\n // Check non-whitespace conditions for opening and closing, and\n // check that closing delimeter isn't followed by a number\n if (prevChar === 0x20/* \" \" */ || prevChar === 0x09/* \\t */ ||\n (nextChar >= 0x30/* \"0\" */ && nextChar <= 0x39/* \"9\" */)) {\n can_close = false;\n }\n if (nextChar === 0x20/* \" \" */ || nextChar === 0x09/* \\t */) {\n can_open = false;\n }\n\n return {\n can_open: can_open,\n can_close: can_close\n };\n}\n\nfunction math_inline(state, silent) {\n var start, match, token, res, pos, esc_count;\n\n if (state.src[state.pos] !== \"$\") { return false; }\n\n res = isValidDelim(state, state.pos);\n if (!res.can_open) {\n if (!silent) { state.pending += \"$\"; }\n state.pos += 1;\n return true;\n }\n\n // First check for and bypass all properly escaped delimieters\n // This loop will assume that the first leading backtick can not\n // be the first character in state.src, which is known since\n // we have found an opening delimieter already.\n start = state.pos + 1;\n match = start;\n while ( (match = state.src.indexOf(\"$\", match)) !== -1) {\n // Found potential $, look for escapes, pos will point to\n // first non escape when complete\n pos = match - 1;\n while (state.src[pos] === \"\\\\\") { pos -= 1; }\n\n // Even number of escapes, potential closing delimiter found\n if ( ((match - pos) % 2) == 1 ) { break; }\n match += 1;\n }\n\n // No closing delimter found. Consume $ and continue.\n if (match === -1) {\n if (!silent) { state.pending += \"$\"; }\n state.pos = start;\n return true;\n }\n\n // Check if we have empty content, ie: $$. Do not parse.\n if (match - start === 0) {\n if (!silent) { state.pending += \"$$\"; }\n state.pos = start + 1;\n return true;\n }\n\n // Check for valid closing delimiter\n res = isValidDelim(state, match);\n if (!res.can_close) {\n if (!silent) { state.pending += \"$\"; }\n state.pos = start;\n return true;\n }\n\n if (!silent) {\n token = state.push('math_inline', 'math', 0);\n token.markup = \"$\";\n token.content = state.src.slice(start, match);\n }\n\n state.pos = match + 1;\n return true;\n}\n\nfunction math_block(state, start, end, silent){\n var firstLine, lastLine, next, lastPos, found = false, token,\n pos = state.bMarks[start] + state.tShift[start],\n max = state.eMarks[start]\n\n if(pos + 2 > max){ return false; }\n if(state.src.slice(pos,pos+2)!=='$$'){ return false; }\n\n pos += 2;\n firstLine = state.src.slice(pos,max);\n\n if(silent){ return true; }\n if(firstLine.trim().slice(-2)==='$$'){\n // Single line expression\n firstLine = firstLine.trim().slice(0, -2);\n found = true;\n }\n\n for(next = start; !found; ){\n\n next++;\n\n if(next >= end){ break; }\n\n pos = state.bMarks[next]+state.tShift[next];\n max = state.eMarks[next];\n\n if(pos < max && state.tShift[next] < state.blkIndent){\n // non-empty line with negative indent should stop the list:\n break;\n }\n\n if(state.src.slice(pos,max).trim().slice(-2)==='$$'){\n lastPos = state.src.slice(0,max).lastIndexOf('$$');\n lastLine = state.src.slice(pos,lastPos);\n found = true;\n }\n\n }\n\n state.line = next + 1;\n\n token = state.push('math_block', 'math', 0);\n token.block = true;\n token.content = (firstLine && firstLine.trim() ? firstLine + '\\n' : '')\n + state.getLines(start + 1, next, state.tShift[start], true)\n + (lastLine && lastLine.trim() ? lastLine : '');\n token.map = [ start, state.line ];\n token.markup = '$$';\n return true;\n}\n\nmodule.exports = function math_plugin(md, options) {\n // Default options\n\n options = options || {};\n\n // set KaTeX as the renderer for markdown-it-simplemath\n var katexInline = function(latex){\n options.displayMode = false;\n try{\n return katex.renderToString(latex, options);\n }\n catch(error){\n if(options.throwOnError){ console.log(error); }\n return latex;\n }\n };\n\n var inlineRenderer = function(tokens, idx){\n return katexInline(tokens[idx].content);\n };\n\n var katexBlock = function(latex){\n options.displayMode = true;\n try{\n return \"