/i,
+ startPreScriptTag: /^<(pre|code|kbd|script)(\s|>)/i,
+ endPreScriptTag: /^<\/(pre|code|kbd|script)(\s|>)/i,
+ startAngleBracket: /^$/,
+ pedanticHrefTitle: /^([^'"]*[^\s])\s+(['"])(.*)\2/,
+ unicodeAlphaNumeric: /[\p{L}\p{N}]/u,
+ escapeTest: /[&<>"']/,
+ escapeReplace: /[&<>"']/g,
+ escapeTestNoEncode: /[<>"']|&(?!(#\d{1,7}|#[Xx][a-fA-F0-9]{1,6}|\w+);)/,
+ escapeReplaceNoEncode: /[<>"']|&(?!(#\d{1,7}|#[Xx][a-fA-F0-9]{1,6}|\w+);)/g,
+ unescapeTest: /&(#(?:\d+)|(?:#x[0-9A-Fa-f]+)|(?:\w+));?/ig,
+ caret: /(^|[^\[])\^/g,
+ percentDecode: /%25/g,
+ findPipe: /\|/g,
+ splitPipe: / \|/,
+ slashPipe: /\\\|/g,
+ carriageReturn: /\r\n|\r/g,
+ spaceLine: /^ +$/gm,
+ notSpaceStart: /^\S*/,
+ endingNewline: /\n$/,
+ listItemRegex: (bull) => new RegExp(`^( {0,3}${bull})((?:[\t ][^\\n]*)?(?:\\n|$))`),
+ nextBulletRegex: (indent) => new RegExp(`^ {0,${Math.min(3, indent - 1)}}(?:[*+-]|\\d{1,9}[.)])((?:[ \t][^\\n]*)?(?:\\n|$))`),
+ hrRegex: (indent) => new RegExp(`^ {0,${Math.min(3, indent - 1)}}((?:- *){3,}|(?:_ *){3,}|(?:\\* *){3,})(?:\\n+|$)`),
+ fencesBeginRegex: (indent) => new RegExp(`^ {0,${Math.min(3, indent - 1)}}(?:\`\`\`|~~~)`),
+ headingBeginRegex: (indent) => new RegExp(`^ {0,${Math.min(3, indent - 1)}}#`),
+ htmlBeginRegex: (indent) => new RegExp(`^ {0,${Math.min(3, indent - 1)}}<(?:[a-z].*>|!--)`, 'i'),
+};
+/**
+ * Block-Level Grammar
+ */
+const newline = /^(?:[ \t]*(?:\n|$))+/;
+const blockCode = /^((?: {4}| {0,3}\t)[^\n]+(?:\n(?:[ \t]*(?:\n|$))*)?)+/;
+const fences = /^ {0,3}(`{3,}(?=[^`\n]*(?:\n|$))|~{3,})([^\n]*)(?:\n|$)(?:|([\s\S]*?)(?:\n|$))(?: {0,3}\1[~`]* *(?=\n|$)|$)/;
+const hr = /^ {0,3}((?:-[\t ]*){3,}|(?:_[ \t]*){3,}|(?:\*[ \t]*){3,})(?:\n+|$)/;
+const heading = /^ {0,3}(#{1,6})(?=\s|$)(.*)(?:\n+|$)/;
+const bullet = /(?:[*+-]|\d{1,9}[.)])/;
+const lheading = edit(/^(?!bull |blockCode|fences|blockquote|heading|html)((?:.|\n(?!\s*?\n|bull |blockCode|fences|blockquote|heading|html))+?)\n {0,3}(=+|-+) *(?:\n+|$)/)
+ .replace(/bull/g, bullet) // lists can interrupt
+ .replace(/blockCode/g, /(?: {4}| {0,3}\t)/) // indented code blocks can interrupt
+ .replace(/fences/g, / {0,3}(?:`{3,}|~{3,})/) // fenced code blocks can interrupt
+ .replace(/blockquote/g, / {0,3}>/) // blockquote can interrupt
+ .replace(/heading/g, / {0,3}#{1,6}/) // ATX heading can interrupt
+ .replace(/html/g, / {0,3}<[^\n>]+>\n/) // block html can interrupt
+ .getRegex();
+const _paragraph = /^([^\n]+(?:\n(?!hr|heading|lheading|blockquote|fences|list|html|table| +\n)[^\n]+)*)/;
+const blockText = /^[^\n]+/;
+const _blockLabel = /(?!\s*\])(?:\\.|[^\[\]\\])+/;
+const def = edit(/^ {0,3}\[(label)\]: *(?:\n[ \t]*)?([^<\s][^\s]*|<.*?>)(?:(?: +(?:\n[ \t]*)?| *\n[ \t]*)(title))? *(?:\n+|$)/)
+ .replace('label', _blockLabel)
+ .replace('title', /(?:"(?:\\"?|[^"\\])*"|'[^'\n]*(?:\n[^'\n]+)*\n?'|\([^()]*\))/)
+ .getRegex();
+const list = edit(/^( {0,3}bull)([ \t][^\n]+?)?(?:\n|$)/)
+ .replace(/bull/g, bullet)
+ .getRegex();
+const _tag = 'address|article|aside|base|basefont|blockquote|body|caption'
+ + '|center|col|colgroup|dd|details|dialog|dir|div|dl|dt|fieldset|figcaption'
+ + '|figure|footer|form|frame|frameset|h[1-6]|head|header|hr|html|iframe'
+ + '|legend|li|link|main|menu|menuitem|meta|nav|noframes|ol|optgroup|option'
+ + '|p|param|search|section|summary|table|tbody|td|tfoot|th|thead|title'
+ + '|tr|track|ul';
+const _comment = /|$))/;
+const html = edit('^ {0,3}(?:' // optional indentation
+ + '<(script|pre|style|textarea)[\\s>][\\s\\S]*?(?:[^\\n]*\\n+|$)' // (1)
+ + '|comment[^\\n]*(\\n+|$)' // (2)
+ + '|<\\?[\\s\\S]*?(?:\\?>\\n*|$)' // (3)
+ + '|\\n*|$)' // (4)
+ + '|\\n*|$)' // (5)
+ + '|)[\\s\\S]*?(?:(?:\\n[ \t]*)+\\n|$)' // (6)
+ + '|<(?!script|pre|style|textarea)([a-z][\\w-]*)(?:attribute)*? */?>(?=[ \\t]*(?:\\n|$))[\\s\\S]*?(?:(?:\\n[ \t]*)+\\n|$)' // (7) open tag
+ + '|(?=[ \\t]*(?:\\n|$))[\\s\\S]*?(?:(?:\\n[ \t]*)+\\n|$)' // (7) closing tag
+ + ')', 'i')
+ .replace('comment', _comment)
+ .replace('tag', _tag)
+ .replace('attribute', / +[a-zA-Z:_][\w.:-]*(?: *= *"[^"\n]*"| *= *'[^'\n]*'| *= *[^\s"'=<>`]+)?/)
+ .getRegex();
+const paragraph = edit(_paragraph)
+ .replace('hr', hr)
+ .replace('heading', ' {0,3}#{1,6}(?:\\s|$)')
+ .replace('|lheading', '') // setext headings don't interrupt commonmark paragraphs
+ .replace('|table', '')
+ .replace('blockquote', ' {0,3}>')
+ .replace('fences', ' {0,3}(?:`{3,}(?=[^`\\n]*\\n)|~{3,})[^\\n]*\\n')
+ .replace('list', ' {0,3}(?:[*+-]|1[.)]) ') // only lists starting from 1 can interrupt
+ .replace('html', ')|<(?:script|pre|style|textarea|!--)')
+ .replace('tag', _tag) // pars can be interrupted by type (6) html blocks
+ .getRegex();
+const blockquote = edit(/^( {0,3}> ?(paragraph|[^\n]*)(?:\n|$))+/)
+ .replace('paragraph', paragraph)
+ .getRegex();
+/**
+ * Normal Block Grammar
+ */
+const blockNormal = {
+ blockquote,
+ code: blockCode,
+ def,
+ fences,
+ heading,
+ hr,
+ html,
+ lheading,
+ list,
+ newline,
+ paragraph,
+ table: noopTest,
+ text: blockText,
+};
+/**
+ * GFM Block Grammar
+ */
+const gfmTable = edit('^ *([^\\n ].*)\\n' // Header
+ + ' {0,3}((?:\\| *)?:?-+:? *(?:\\| *:?-+:? *)*(?:\\| *)?)' // Align
+ + '(?:\\n((?:(?! *\\n|hr|heading|blockquote|code|fences|list|html).*(?:\\n|$))*)\\n*|$)') // Cells
+ .replace('hr', hr)
+ .replace('heading', ' {0,3}#{1,6}(?:\\s|$)')
+ .replace('blockquote', ' {0,3}>')
+ .replace('code', '(?: {4}| {0,3}\t)[^\\n]')
+ .replace('fences', ' {0,3}(?:`{3,}(?=[^`\\n]*\\n)|~{3,})[^\\n]*\\n')
+ .replace('list', ' {0,3}(?:[*+-]|1[.)]) ') // only lists starting from 1 can interrupt
+ .replace('html', ')|<(?:script|pre|style|textarea|!--)')
+ .replace('tag', _tag) // tables can be interrupted by type (6) html blocks
+ .getRegex();
+const blockGfm = {
+ ...blockNormal,
+ table: gfmTable,
+ paragraph: edit(_paragraph)
+ .replace('hr', hr)
+ .replace('heading', ' {0,3}#{1,6}(?:\\s|$)')
+ .replace('|lheading', '') // setext headings don't interrupt commonmark paragraphs
+ .replace('table', gfmTable) // interrupt paragraphs with table
+ .replace('blockquote', ' {0,3}>')
+ .replace('fences', ' {0,3}(?:`{3,}(?=[^`\\n]*\\n)|~{3,})[^\\n]*\\n')
+ .replace('list', ' {0,3}(?:[*+-]|1[.)]) ') // only lists starting from 1 can interrupt
+ .replace('html', ')|<(?:script|pre|style|textarea|!--)')
+ .replace('tag', _tag) // pars can be interrupted by type (6) html blocks
+ .getRegex(),
+};
+/**
+ * Pedantic grammar (original John Gruber's loose markdown specification)
+ */
+const blockPedantic = {
+ ...blockNormal,
+ html: edit('^ *(?:comment *(?:\\n|\\s*$)'
+ + '|<(tag)[\\s\\S]+? *(?:\\n{2,}|\\s*$)' // closed tag
+ + '|\\s]*)*?/?> *(?:\\n{2,}|\\s*$))')
+ .replace('comment', _comment)
+ .replace(/tag/g, '(?!(?:'
+ + 'a|em|strong|small|s|cite|q|dfn|abbr|data|time|code|var|samp|kbd|sub'
+ + '|sup|i|b|u|mark|ruby|rt|rp|bdi|bdo|span|br|wbr|ins|del|img)'
+ + '\\b)\\w+(?!:|[^\\w\\s@]*@)\\b')
+ .getRegex(),
+ def: /^ *\[([^\]]+)\]: *]+)>?(?: +(["(][^\n]+[")]))? *(?:\n+|$)/,
+ heading: /^(#{1,6})(.*)(?:\n+|$)/,
+ fences: noopTest, // fences not supported
+ lheading: /^(.+?)\n {0,3}(=+|-+) *(?:\n+|$)/,
+ paragraph: edit(_paragraph)
+ .replace('hr', hr)
+ .replace('heading', ' *#{1,6} *[^\n]')
+ .replace('lheading', lheading)
+ .replace('|table', '')
+ .replace('blockquote', ' {0,3}>')
+ .replace('|fences', '')
+ .replace('|list', '')
+ .replace('|html', '')
+ .replace('|tag', '')
+ .getRegex(),
+};
+/**
+ * Inline-Level Grammar
+ */
+const escape$1 = /^\\([!"#$%&'()*+,\-./:;<=>?@\[\]\\^_`{|}~])/;
+const inlineCode = /^(`+)([^`]|[^`][\s\S]*?[^`])\1(?!`)/;
+const br = /^( {2,}|\\)\n(?!\s*$)/;
+const inlineText = /^(`+|[^`])(?:(?= {2,}\n)|[\s\S]*?(?:(?=[\\
+const blockSkip = /\[[^[\]]*?\]\((?:\\.|[^\\\(\)]|\((?:\\.|[^\\\(\)])*\))*\)|`[^`]*?`|<[^<>]*?>/g;
+const emStrongLDelimCore = /^(?:\*+(?:((?!\*)punct)|[^\s*]))|^_+(?:((?!_)punct)|([^\s_]))/;
+const emStrongLDelim = edit(emStrongLDelimCore, 'u')
+ .replace(/punct/g, _punctuation)
+ .getRegex();
+const emStrongLDelimGfm = edit(emStrongLDelimCore, 'u')
+ .replace(/punct/g, _punctuationGfmStrongEm)
+ .getRegex();
+const emStrongRDelimAstCore = '^[^_*]*?__[^_*]*?\\*[^_*]*?(?=__)' // Skip orphan inside strong
+ + '|[^*]+(?=[^*])' // Consume to delim
+ + '|(?!\\*)punct(\\*+)(?=[\\s]|$)' // (1) #*** can only be a Right Delimiter
+ + '|notPunctSpace(\\*+)(?!\\*)(?=punctSpace|$)' // (2) a***#, a*** can only be a Right Delimiter
+ + '|(?!\\*)punctSpace(\\*+)(?=notPunctSpace)' // (3) #***a, ***a can only be Left Delimiter
+ + '|[\\s](\\*+)(?!\\*)(?=punct)' // (4) ***# can only be Left Delimiter
+ + '|(?!\\*)punct(\\*+)(?!\\*)(?=punct)' // (5) #***# can be either Left or Right Delimiter
+ + '|notPunctSpace(\\*+)(?=notPunctSpace)'; // (6) a***a can be either Left or Right Delimiter
+const emStrongRDelimAst = edit(emStrongRDelimAstCore, 'gu')
+ .replace(/notPunctSpace/g, _notPunctuationOrSpace)
+ .replace(/punctSpace/g, _punctuationOrSpace)
+ .replace(/punct/g, _punctuation)
+ .getRegex();
+const emStrongRDelimAstGfm = edit(emStrongRDelimAstCore, 'gu')
+ .replace(/notPunctSpace/g, _notPunctuationOrSpaceGfmStrongEm)
+ .replace(/punctSpace/g, _punctuationOrSpaceGfmStrongEm)
+ .replace(/punct/g, _punctuationGfmStrongEm)
+ .getRegex();
+// (6) Not allowed for _
+const emStrongRDelimUnd = edit('^[^_*]*?\\*\\*[^_*]*?_[^_*]*?(?=\\*\\*)' // Skip orphan inside strong
+ + '|[^_]+(?=[^_])' // Consume to delim
+ + '|(?!_)punct(_+)(?=[\\s]|$)' // (1) #___ can only be a Right Delimiter
+ + '|notPunctSpace(_+)(?!_)(?=punctSpace|$)' // (2) a___#, a___ can only be a Right Delimiter
+ + '|(?!_)punctSpace(_+)(?=notPunctSpace)' // (3) #___a, ___a can only be Left Delimiter
+ + '|[\\s](_+)(?!_)(?=punct)' // (4) ___# can only be Left Delimiter
+ + '|(?!_)punct(_+)(?!_)(?=punct)', 'gu') // (5) #___# can be either Left or Right Delimiter
+ .replace(/notPunctSpace/g, _notPunctuationOrSpace)
+ .replace(/punctSpace/g, _punctuationOrSpace)
+ .replace(/punct/g, _punctuation)
+ .getRegex();
+const anyPunctuation = edit(/\\(punct)/, 'gu')
+ .replace(/punct/g, _punctuation)
+ .getRegex();
+const autolink = edit(/^<(scheme:[^\s\x00-\x1f<>]*|email)>/)
+ .replace('scheme', /[a-zA-Z][a-zA-Z0-9+.-]{1,31}/)
+ .replace('email', /[a-zA-Z0-9.!#$%&'*+/=?^_`{|}~-]+(@)[a-zA-Z0-9](?:[a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?(?:\.[a-zA-Z0-9](?:[a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?)+(?![-_])/)
+ .getRegex();
+const _inlineComment = edit(_comment).replace('(?:-->|$)', '-->').getRegex();
+const tag = edit('^comment'
+ + '|^' // self-closing tag
+ + '|^<[a-zA-Z][\\w-]*(?:attribute)*?\\s*/?>' // open tag
+ + '|^<\\?[\\s\\S]*?\\?>' // processing instruction, e.g.
+ + '|^' // declaration, e.g.
+ + '|^') // CDATA section
+ .replace('comment', _inlineComment)
+ .replace('attribute', /\s+[a-zA-Z:_][\w.:-]*(?:\s*=\s*"[^"]*"|\s*=\s*'[^']*'|\s*=\s*[^\s"'=<>`]+)?/)
+ .getRegex();
+const _inlineLabel = /(?:\[(?:\\.|[^\[\]\\])*\]|\\.|`[^`]*`|[^\[\]\\`])*?/;
+const link = edit(/^!?\[(label)\]\(\s*(href)(?:\s+(title))?\s*\)/)
+ .replace('label', _inlineLabel)
+ .replace('href', /<(?:\\.|[^\n<>\\])+>|[^\s\x00-\x1f]*/)
+ .replace('title', /"(?:\\"?|[^"\\])*"|'(?:\\'?|[^'\\])*'|\((?:\\\)?|[^)\\])*\)/)
+ .getRegex();
+const reflink = edit(/^!?\[(label)\]\[(ref)\]/)
+ .replace('label', _inlineLabel)
+ .replace('ref', _blockLabel)
+ .getRegex();
+const nolink = edit(/^!?\[(ref)\](?:\[\])?/)
+ .replace('ref', _blockLabel)
+ .getRegex();
+const reflinkSearch = edit('reflink|nolink(?!\\()', 'g')
+ .replace('reflink', reflink)
+ .replace('nolink', nolink)
+ .getRegex();
+/**
+ * Normal Inline Grammar
+ */
+const inlineNormal = {
+ _backpedal: noopTest, // only used for GFM url
+ anyPunctuation,
+ autolink,
+ blockSkip,
+ br,
+ code: inlineCode,
+ del: noopTest,
+ emStrongLDelim,
+ emStrongRDelimAst,
+ emStrongRDelimUnd,
+ escape: escape$1,
+ link,
+ nolink,
+ punctuation,
+ reflink,
+ reflinkSearch,
+ tag,
+ text: inlineText,
+ url: noopTest,
+};
+/**
+ * Pedantic Inline Grammar
+ */
+const inlinePedantic = {
+ ...inlineNormal,
+ link: edit(/^!?\[(label)\]\((.*?)\)/)
+ .replace('label', _inlineLabel)
+ .getRegex(),
+ reflink: edit(/^!?\[(label)\]\s*\[([^\]]*)\]/)
+ .replace('label', _inlineLabel)
+ .getRegex(),
+};
+/**
+ * GFM Inline Grammar
+ */
+const inlineGfm = {
+ ...inlineNormal,
+ emStrongRDelimAst: emStrongRDelimAstGfm,
+ emStrongLDelim: emStrongLDelimGfm,
+ url: edit(/^((?:ftp|https?):\/\/|www\.)(?:[a-zA-Z0-9\-]+\.?)+[^\s<]*|^email/, 'i')
+ .replace('email', /[A-Za-z0-9._+-]+(@)[a-zA-Z0-9-_]+(?:\.[a-zA-Z0-9-_]*[a-zA-Z0-9])+(?![-_])/)
+ .getRegex(),
+ _backpedal: /(?:[^?!.,:;*_'"~()&]+|\([^)]*\)|&(?![a-zA-Z0-9]+;$)|[?!.,:;*_'"~)]+(?!$))+/,
+ del: /^(~~?)(?=[^\s~])((?:\\.|[^\\])*?(?:\\.|[^\s~\\]))\1(?=[^~]|$)/,
+ text: /^([`~]+|[^`~])(?:(?= {2,}\n)|(?=[a-zA-Z0-9.!#$%&'*+\/=?_`{\|}~-]+@)|[\s\S]*?(?:(?=[\\': '>',
+ '"': '"',
+ "'": ''',
+};
+const getEscapeReplacement = (ch) => escapeReplacements[ch];
+function escape(html, encode) {
+ if (encode) {
+ if (other.escapeTest.test(html)) {
+ return html.replace(other.escapeReplace, getEscapeReplacement);
+ }
+ }
+ else {
+ if (other.escapeTestNoEncode.test(html)) {
+ return html.replace(other.escapeReplaceNoEncode, getEscapeReplacement);
+ }
+ }
+ return html;
+}
+function cleanUrl(href) {
+ try {
+ href = encodeURI(href).replace(other.percentDecode, '%');
+ }
+ catch {
+ return null;
+ }
+ return href;
+}
+function splitCells(tableRow, count) {
+ // ensure that every cell-delimiting pipe has a space
+ // before it to distinguish it from an escaped pipe
+ const row = tableRow.replace(other.findPipe, (match, offset, str) => {
+ let escaped = false;
+ let curr = offset;
+ while (--curr >= 0 && str[curr] === '\\')
+ escaped = !escaped;
+ if (escaped) {
+ // odd number of slashes means | is escaped
+ // so we leave it alone
+ return '|';
+ }
+ else {
+ // add space before unescaped |
+ return ' |';
+ }
+ }), cells = row.split(other.splitPipe);
+ let i = 0;
+ // First/last cell in a row cannot be empty if it has no leading/trailing pipe
+ if (!cells[0].trim()) {
+ cells.shift();
+ }
+ if (cells.length > 0 && !cells.at(-1)?.trim()) {
+ cells.pop();
+ }
+ if (count) {
+ if (cells.length > count) {
+ cells.splice(count);
+ }
+ else {
+ while (cells.length < count)
+ cells.push('');
+ }
+ }
+ for (; i < cells.length; i++) {
+ // leading or trailing whitespace is ignored per the gfm spec
+ cells[i] = cells[i].trim().replace(other.slashPipe, '|');
+ }
+ return cells;
+}
+/**
+ * Remove trailing 'c's. Equivalent to str.replace(/c*$/, '').
+ * /c*$/ is vulnerable to REDOS.
+ *
+ * @param str
+ * @param c
+ * @param invert Remove suffix of non-c chars instead. Default falsey.
+ */
+function rtrim(str, c, invert) {
+ const l = str.length;
+ if (l === 0) {
+ return '';
+ }
+ // Length of suffix matching the invert condition.
+ let suffLen = 0;
+ // Step left until we fail to match the invert condition.
+ while (suffLen < l) {
+ const currChar = str.charAt(l - suffLen - 1);
+ if (currChar === c && true) {
+ suffLen++;
+ }
+ else {
+ break;
+ }
+ }
+ return str.slice(0, l - suffLen);
+}
+function findClosingBracket(str, b) {
+ if (str.indexOf(b[1]) === -1) {
+ return -1;
+ }
+ let level = 0;
+ for (let i = 0; i < str.length; i++) {
+ if (str[i] === '\\') {
+ i++;
+ }
+ else if (str[i] === b[0]) {
+ level++;
+ }
+ else if (str[i] === b[1]) {
+ level--;
+ if (level < 0) {
+ return i;
+ }
+ }
+ }
+ return -1;
+}
+
+function outputLink(cap, link, raw, lexer, rules) {
+ const href = link.href;
+ const title = link.title || null;
+ const text = cap[1].replace(rules.other.outputLinkReplace, '$1');
+ if (cap[0].charAt(0) !== '!') {
+ lexer.state.inLink = true;
+ const token = {
+ type: 'link',
+ raw,
+ href,
+ title,
+ text,
+ tokens: lexer.inlineTokens(text),
+ };
+ lexer.state.inLink = false;
+ return token;
+ }
+ return {
+ type: 'image',
+ raw,
+ href,
+ title,
+ text,
+ };
+}
+function indentCodeCompensation(raw, text, rules) {
+ const matchIndentToCode = raw.match(rules.other.indentCodeCompensation);
+ if (matchIndentToCode === null) {
+ return text;
+ }
+ const indentToCode = matchIndentToCode[1];
+ return text
+ .split('\n')
+ .map(node => {
+ const matchIndentInNode = node.match(rules.other.beginningSpace);
+ if (matchIndentInNode === null) {
+ return node;
+ }
+ const [indentInNode] = matchIndentInNode;
+ if (indentInNode.length >= indentToCode.length) {
+ return node.slice(indentToCode.length);
+ }
+ return node;
+ })
+ .join('\n');
+}
+/**
+ * Tokenizer
+ */
+class _Tokenizer {
+ options;
+ rules; // set by the lexer
+ lexer; // set by the lexer
+ constructor(options) {
+ this.options = options || _defaults;
+ }
+ space(src) {
+ const cap = this.rules.block.newline.exec(src);
+ if (cap && cap[0].length > 0) {
+ return {
+ type: 'space',
+ raw: cap[0],
+ };
+ }
+ }
+ code(src) {
+ const cap = this.rules.block.code.exec(src);
+ if (cap) {
+ const text = cap[0].replace(this.rules.other.codeRemoveIndent, '');
+ return {
+ type: 'code',
+ raw: cap[0],
+ codeBlockStyle: 'indented',
+ text: !this.options.pedantic
+ ? rtrim(text, '\n')
+ : text,
+ };
+ }
+ }
+ fences(src) {
+ const cap = this.rules.block.fences.exec(src);
+ if (cap) {
+ const raw = cap[0];
+ const text = indentCodeCompensation(raw, cap[3] || '', this.rules);
+ return {
+ type: 'code',
+ raw,
+ lang: cap[2] ? cap[2].trim().replace(this.rules.inline.anyPunctuation, '$1') : cap[2],
+ text,
+ };
+ }
+ }
+ heading(src) {
+ const cap = this.rules.block.heading.exec(src);
+ if (cap) {
+ let text = cap[2].trim();
+ // remove trailing #s
+ if (this.rules.other.endingHash.test(text)) {
+ const trimmed = rtrim(text, '#');
+ if (this.options.pedantic) {
+ text = trimmed.trim();
+ }
+ else if (!trimmed || this.rules.other.endingSpaceChar.test(trimmed)) {
+ // CommonMark requires space before trailing #s
+ text = trimmed.trim();
+ }
+ }
+ return {
+ type: 'heading',
+ raw: cap[0],
+ depth: cap[1].length,
+ text,
+ tokens: this.lexer.inline(text),
+ };
+ }
+ }
+ hr(src) {
+ const cap = this.rules.block.hr.exec(src);
+ if (cap) {
+ return {
+ type: 'hr',
+ raw: rtrim(cap[0], '\n'),
+ };
+ }
+ }
+ blockquote(src) {
+ const cap = this.rules.block.blockquote.exec(src);
+ if (cap) {
+ let lines = rtrim(cap[0], '\n').split('\n');
+ let raw = '';
+ let text = '';
+ const tokens = [];
+ while (lines.length > 0) {
+ let inBlockquote = false;
+ const currentLines = [];
+ let i;
+ for (i = 0; i < lines.length; i++) {
+ // get lines up to a continuation
+ if (this.rules.other.blockquoteStart.test(lines[i])) {
+ currentLines.push(lines[i]);
+ inBlockquote = true;
+ }
+ else if (!inBlockquote) {
+ currentLines.push(lines[i]);
+ }
+ else {
+ break;
+ }
+ }
+ lines = lines.slice(i);
+ const currentRaw = currentLines.join('\n');
+ const currentText = currentRaw
+ // precede setext continuation with 4 spaces so it isn't a setext
+ .replace(this.rules.other.blockquoteSetextReplace, '\n $1')
+ .replace(this.rules.other.blockquoteSetextReplace2, '');
+ raw = raw ? `${raw}\n${currentRaw}` : currentRaw;
+ text = text ? `${text}\n${currentText}` : currentText;
+ // parse blockquote lines as top level tokens
+ // merge paragraphs if this is a continuation
+ const top = this.lexer.state.top;
+ this.lexer.state.top = true;
+ this.lexer.blockTokens(currentText, tokens, true);
+ this.lexer.state.top = top;
+ // if there is no continuation then we are done
+ if (lines.length === 0) {
+ break;
+ }
+ const lastToken = tokens.at(-1);
+ if (lastToken?.type === 'code') {
+ // blockquote continuation cannot be preceded by a code block
+ break;
+ }
+ else if (lastToken?.type === 'blockquote') {
+ // include continuation in nested blockquote
+ const oldToken = lastToken;
+ const newText = oldToken.raw + '\n' + lines.join('\n');
+ const newToken = this.blockquote(newText);
+ tokens[tokens.length - 1] = newToken;
+ raw = raw.substring(0, raw.length - oldToken.raw.length) + newToken.raw;
+ text = text.substring(0, text.length - oldToken.text.length) + newToken.text;
+ break;
+ }
+ else if (lastToken?.type === 'list') {
+ // include continuation in nested list
+ const oldToken = lastToken;
+ const newText = oldToken.raw + '\n' + lines.join('\n');
+ const newToken = this.list(newText);
+ tokens[tokens.length - 1] = newToken;
+ raw = raw.substring(0, raw.length - lastToken.raw.length) + newToken.raw;
+ text = text.substring(0, text.length - oldToken.raw.length) + newToken.raw;
+ lines = newText.substring(tokens.at(-1).raw.length).split('\n');
+ continue;
+ }
+ }
+ return {
+ type: 'blockquote',
+ raw,
+ tokens,
+ text,
+ };
+ }
+ }
+ list(src) {
+ let cap = this.rules.block.list.exec(src);
+ if (cap) {
+ let bull = cap[1].trim();
+ const isordered = bull.length > 1;
+ const list = {
+ type: 'list',
+ raw: '',
+ ordered: isordered,
+ start: isordered ? +bull.slice(0, -1) : '',
+ loose: false,
+ items: [],
+ };
+ bull = isordered ? `\\d{1,9}\\${bull.slice(-1)}` : `\\${bull}`;
+ if (this.options.pedantic) {
+ bull = isordered ? bull : '[*+-]';
+ }
+ // Get next list item
+ const itemRegex = this.rules.other.listItemRegex(bull);
+ let endsWithBlankLine = false;
+ // Check if current bullet point can start a new List Item
+ while (src) {
+ let endEarly = false;
+ let raw = '';
+ let itemContents = '';
+ if (!(cap = itemRegex.exec(src))) {
+ break;
+ }
+ if (this.rules.block.hr.test(src)) { // End list if bullet was actually HR (possibly move into itemRegex?)
+ break;
+ }
+ raw = cap[0];
+ src = src.substring(raw.length);
+ let line = cap[2].split('\n', 1)[0].replace(this.rules.other.listReplaceTabs, (t) => ' '.repeat(3 * t.length));
+ let nextLine = src.split('\n', 1)[0];
+ let blankLine = !line.trim();
+ let indent = 0;
+ if (this.options.pedantic) {
+ indent = 2;
+ itemContents = line.trimStart();
+ }
+ else if (blankLine) {
+ indent = cap[1].length + 1;
+ }
+ else {
+ indent = cap[2].search(this.rules.other.nonSpaceChar); // Find first non-space char
+ indent = indent > 4 ? 1 : indent; // Treat indented code blocks (> 4 spaces) as having only 1 indent
+ itemContents = line.slice(indent);
+ indent += cap[1].length;
+ }
+ if (blankLine && this.rules.other.blankLine.test(nextLine)) { // Items begin with at most one blank line
+ raw += nextLine + '\n';
+ src = src.substring(nextLine.length + 1);
+ endEarly = true;
+ }
+ if (!endEarly) {
+ const nextBulletRegex = this.rules.other.nextBulletRegex(indent);
+ const hrRegex = this.rules.other.hrRegex(indent);
+ const fencesBeginRegex = this.rules.other.fencesBeginRegex(indent);
+ const headingBeginRegex = this.rules.other.headingBeginRegex(indent);
+ const htmlBeginRegex = this.rules.other.htmlBeginRegex(indent);
+ // Check if following lines should be included in List Item
+ while (src) {
+ const rawLine = src.split('\n', 1)[0];
+ let nextLineWithoutTabs;
+ nextLine = rawLine;
+ // Re-align to follow commonmark nesting rules
+ if (this.options.pedantic) {
+ nextLine = nextLine.replace(this.rules.other.listReplaceNesting, ' ');
+ nextLineWithoutTabs = nextLine;
+ }
+ else {
+ nextLineWithoutTabs = nextLine.replace(this.rules.other.tabCharGlobal, ' ');
+ }
+ // End list item if found code fences
+ if (fencesBeginRegex.test(nextLine)) {
+ break;
+ }
+ // End list item if found start of new heading
+ if (headingBeginRegex.test(nextLine)) {
+ break;
+ }
+ // End list item if found start of html block
+ if (htmlBeginRegex.test(nextLine)) {
+ break;
+ }
+ // End list item if found start of new bullet
+ if (nextBulletRegex.test(nextLine)) {
+ break;
+ }
+ // Horizontal rule found
+ if (hrRegex.test(nextLine)) {
+ break;
+ }
+ if (nextLineWithoutTabs.search(this.rules.other.nonSpaceChar) >= indent || !nextLine.trim()) { // Dedent if possible
+ itemContents += '\n' + nextLineWithoutTabs.slice(indent);
+ }
+ else {
+ // not enough indentation
+ if (blankLine) {
+ break;
+ }
+ // paragraph continuation unless last line was a different block level element
+ if (line.replace(this.rules.other.tabCharGlobal, ' ').search(this.rules.other.nonSpaceChar) >= 4) { // indented code block
+ break;
+ }
+ if (fencesBeginRegex.test(line)) {
+ break;
+ }
+ if (headingBeginRegex.test(line)) {
+ break;
+ }
+ if (hrRegex.test(line)) {
+ break;
+ }
+ itemContents += '\n' + nextLine;
+ }
+ if (!blankLine && !nextLine.trim()) { // Check if current line is blank
+ blankLine = true;
+ }
+ raw += rawLine + '\n';
+ src = src.substring(rawLine.length + 1);
+ line = nextLineWithoutTabs.slice(indent);
+ }
+ }
+ if (!list.loose) {
+ // If the previous item ended with a blank line, the list is loose
+ if (endsWithBlankLine) {
+ list.loose = true;
+ }
+ else if (this.rules.other.doubleBlankLine.test(raw)) {
+ endsWithBlankLine = true;
+ }
+ }
+ let istask = null;
+ let ischecked;
+ // Check for task list items
+ if (this.options.gfm) {
+ istask = this.rules.other.listIsTask.exec(itemContents);
+ if (istask) {
+ ischecked = istask[0] !== '[ ] ';
+ itemContents = itemContents.replace(this.rules.other.listReplaceTask, '');
+ }
+ }
+ list.items.push({
+ type: 'list_item',
+ raw,
+ task: !!istask,
+ checked: ischecked,
+ loose: false,
+ text: itemContents,
+ tokens: [],
+ });
+ list.raw += raw;
+ }
+ // Do not consume newlines at end of final item. Alternatively, make itemRegex *start* with any newlines to simplify/speed up endsWithBlankLine logic
+ const lastItem = list.items.at(-1);
+ if (lastItem) {
+ lastItem.raw = lastItem.raw.trimEnd();
+ lastItem.text = lastItem.text.trimEnd();
+ }
+ else {
+ // not a list since there were no items
+ return;
+ }
+ list.raw = list.raw.trimEnd();
+ // Item child tokens handled here at end because we needed to have the final item to trim it first
+ for (let i = 0; i < list.items.length; i++) {
+ this.lexer.state.top = false;
+ list.items[i].tokens = this.lexer.blockTokens(list.items[i].text, []);
+ if (!list.loose) {
+ // Check if list should be loose
+ const spacers = list.items[i].tokens.filter(t => t.type === 'space');
+ const hasMultipleLineBreaks = spacers.length > 0 && spacers.some(t => this.rules.other.anyLine.test(t.raw));
+ list.loose = hasMultipleLineBreaks;
+ }
+ }
+ // Set all items to loose if list is loose
+ if (list.loose) {
+ for (let i = 0; i < list.items.length; i++) {
+ list.items[i].loose = true;
+ }
+ }
+ return list;
+ }
+ }
+ html(src) {
+ const cap = this.rules.block.html.exec(src);
+ if (cap) {
+ const token = {
+ type: 'html',
+ block: true,
+ raw: cap[0],
+ pre: cap[1] === 'pre' || cap[1] === 'script' || cap[1] === 'style',
+ text: cap[0],
+ };
+ return token;
+ }
+ }
+ def(src) {
+ const cap = this.rules.block.def.exec(src);
+ if (cap) {
+ const tag = cap[1].toLowerCase().replace(this.rules.other.multipleSpaceGlobal, ' ');
+ const href = cap[2] ? cap[2].replace(this.rules.other.hrefBrackets, '$1').replace(this.rules.inline.anyPunctuation, '$1') : '';
+ const title = cap[3] ? cap[3].substring(1, cap[3].length - 1).replace(this.rules.inline.anyPunctuation, '$1') : cap[3];
+ return {
+ type: 'def',
+ tag,
+ raw: cap[0],
+ href,
+ title,
+ };
+ }
+ }
+ table(src) {
+ const cap = this.rules.block.table.exec(src);
+ if (!cap) {
+ return;
+ }
+ if (!this.rules.other.tableDelimiter.test(cap[2])) {
+ // delimiter row must have a pipe (|) or colon (:) otherwise it is a setext heading
+ return;
+ }
+ const headers = splitCells(cap[1]);
+ const aligns = cap[2].replace(this.rules.other.tableAlignChars, '').split('|');
+ const rows = cap[3]?.trim() ? cap[3].replace(this.rules.other.tableRowBlankLine, '').split('\n') : [];
+ const item = {
+ type: 'table',
+ raw: cap[0],
+ header: [],
+ align: [],
+ rows: [],
+ };
+ if (headers.length !== aligns.length) {
+ // header and align columns must be equal, rows can be different.
+ return;
+ }
+ for (const align of aligns) {
+ if (this.rules.other.tableAlignRight.test(align)) {
+ item.align.push('right');
+ }
+ else if (this.rules.other.tableAlignCenter.test(align)) {
+ item.align.push('center');
+ }
+ else if (this.rules.other.tableAlignLeft.test(align)) {
+ item.align.push('left');
+ }
+ else {
+ item.align.push(null);
+ }
+ }
+ for (let i = 0; i < headers.length; i++) {
+ item.header.push({
+ text: headers[i],
+ tokens: this.lexer.inline(headers[i]),
+ header: true,
+ align: item.align[i],
+ });
+ }
+ for (const row of rows) {
+ item.rows.push(splitCells(row, item.header.length).map((cell, i) => {
+ return {
+ text: cell,
+ tokens: this.lexer.inline(cell),
+ header: false,
+ align: item.align[i],
+ };
+ }));
+ }
+ return item;
+ }
+ lheading(src) {
+ const cap = this.rules.block.lheading.exec(src);
+ if (cap) {
+ return {
+ type: 'heading',
+ raw: cap[0],
+ depth: cap[2].charAt(0) === '=' ? 1 : 2,
+ text: cap[1],
+ tokens: this.lexer.inline(cap[1]),
+ };
+ }
+ }
+ paragraph(src) {
+ const cap = this.rules.block.paragraph.exec(src);
+ if (cap) {
+ const text = cap[1].charAt(cap[1].length - 1) === '\n'
+ ? cap[1].slice(0, -1)
+ : cap[1];
+ return {
+ type: 'paragraph',
+ raw: cap[0],
+ text,
+ tokens: this.lexer.inline(text),
+ };
+ }
+ }
+ text(src) {
+ const cap = this.rules.block.text.exec(src);
+ if (cap) {
+ return {
+ type: 'text',
+ raw: cap[0],
+ text: cap[0],
+ tokens: this.lexer.inline(cap[0]),
+ };
+ }
+ }
+ escape(src) {
+ const cap = this.rules.inline.escape.exec(src);
+ if (cap) {
+ return {
+ type: 'escape',
+ raw: cap[0],
+ text: cap[1],
+ };
+ }
+ }
+ tag(src) {
+ const cap = this.rules.inline.tag.exec(src);
+ if (cap) {
+ if (!this.lexer.state.inLink && this.rules.other.startATag.test(cap[0])) {
+ this.lexer.state.inLink = true;
+ }
+ else if (this.lexer.state.inLink && this.rules.other.endATag.test(cap[0])) {
+ this.lexer.state.inLink = false;
+ }
+ if (!this.lexer.state.inRawBlock && this.rules.other.startPreScriptTag.test(cap[0])) {
+ this.lexer.state.inRawBlock = true;
+ }
+ else if (this.lexer.state.inRawBlock && this.rules.other.endPreScriptTag.test(cap[0])) {
+ this.lexer.state.inRawBlock = false;
+ }
+ return {
+ type: 'html',
+ raw: cap[0],
+ inLink: this.lexer.state.inLink,
+ inRawBlock: this.lexer.state.inRawBlock,
+ block: false,
+ text: cap[0],
+ };
+ }
+ }
+ link(src) {
+ const cap = this.rules.inline.link.exec(src);
+ if (cap) {
+ const trimmedUrl = cap[2].trim();
+ if (!this.options.pedantic && this.rules.other.startAngleBracket.test(trimmedUrl)) {
+ // commonmark requires matching angle brackets
+ if (!(this.rules.other.endAngleBracket.test(trimmedUrl))) {
+ return;
+ }
+ // ending angle bracket cannot be escaped
+ const rtrimSlash = rtrim(trimmedUrl.slice(0, -1), '\\');
+ if ((trimmedUrl.length - rtrimSlash.length) % 2 === 0) {
+ return;
+ }
+ }
+ else {
+ // find closing parenthesis
+ const lastParenIndex = findClosingBracket(cap[2], '()');
+ if (lastParenIndex > -1) {
+ const start = cap[0].indexOf('!') === 0 ? 5 : 4;
+ const linkLen = start + cap[1].length + lastParenIndex;
+ cap[2] = cap[2].substring(0, lastParenIndex);
+ cap[0] = cap[0].substring(0, linkLen).trim();
+ cap[3] = '';
+ }
+ }
+ let href = cap[2];
+ let title = '';
+ if (this.options.pedantic) {
+ // split pedantic href and title
+ const link = this.rules.other.pedanticHrefTitle.exec(href);
+ if (link) {
+ href = link[1];
+ title = link[3];
+ }
+ }
+ else {
+ title = cap[3] ? cap[3].slice(1, -1) : '';
+ }
+ href = href.trim();
+ if (this.rules.other.startAngleBracket.test(href)) {
+ if (this.options.pedantic && !(this.rules.other.endAngleBracket.test(trimmedUrl))) {
+ // pedantic allows starting angle bracket without ending angle bracket
+ href = href.slice(1);
+ }
+ else {
+ href = href.slice(1, -1);
+ }
+ }
+ return outputLink(cap, {
+ href: href ? href.replace(this.rules.inline.anyPunctuation, '$1') : href,
+ title: title ? title.replace(this.rules.inline.anyPunctuation, '$1') : title,
+ }, cap[0], this.lexer, this.rules);
+ }
+ }
+ reflink(src, links) {
+ let cap;
+ if ((cap = this.rules.inline.reflink.exec(src))
+ || (cap = this.rules.inline.nolink.exec(src))) {
+ const linkString = (cap[2] || cap[1]).replace(this.rules.other.multipleSpaceGlobal, ' ');
+ const link = links[linkString.toLowerCase()];
+ if (!link) {
+ const text = cap[0].charAt(0);
+ return {
+ type: 'text',
+ raw: text,
+ text,
+ };
+ }
+ return outputLink(cap, link, cap[0], this.lexer, this.rules);
+ }
+ }
+ emStrong(src, maskedSrc, prevChar = '') {
+ let match = this.rules.inline.emStrongLDelim.exec(src);
+ if (!match)
+ return;
+ // _ can't be between two alphanumerics. \p{L}\p{N} includes non-english alphabet/numbers as well
+ if (match[3] && prevChar.match(this.rules.other.unicodeAlphaNumeric))
+ return;
+ const nextChar = match[1] || match[2] || '';
+ if (!nextChar || !prevChar || this.rules.inline.punctuation.exec(prevChar)) {
+ // unicode Regex counts emoji as 1 char; spread into array for proper count (used multiple times below)
+ const lLength = [...match[0]].length - 1;
+ let rDelim, rLength, delimTotal = lLength, midDelimTotal = 0;
+ const endReg = match[0][0] === '*' ? this.rules.inline.emStrongRDelimAst : this.rules.inline.emStrongRDelimUnd;
+ endReg.lastIndex = 0;
+ // Clip maskedSrc to same section of string as src (move to lexer?)
+ maskedSrc = maskedSrc.slice(-1 * src.length + lLength);
+ while ((match = endReg.exec(maskedSrc)) != null) {
+ rDelim = match[1] || match[2] || match[3] || match[4] || match[5] || match[6];
+ if (!rDelim)
+ continue; // skip single * in __abc*abc__
+ rLength = [...rDelim].length;
+ if (match[3] || match[4]) { // found another Left Delim
+ delimTotal += rLength;
+ continue;
+ }
+ else if (match[5] || match[6]) { // either Left or Right Delim
+ if (lLength % 3 && !((lLength + rLength) % 3)) {
+ midDelimTotal += rLength;
+ continue; // CommonMark Emphasis Rules 9-10
+ }
+ }
+ delimTotal -= rLength;
+ if (delimTotal > 0)
+ continue; // Haven't found enough closing delimiters
+ // Remove extra characters. *a*** -> *a*
+ rLength = Math.min(rLength, rLength + delimTotal + midDelimTotal);
+ // char length can be >1 for unicode characters;
+ const lastCharLength = [...match[0]][0].length;
+ const raw = src.slice(0, lLength + match.index + lastCharLength + rLength);
+ // Create `em` if smallest delimiter has odd char count. *a***
+ if (Math.min(lLength, rLength) % 2) {
+ const text = raw.slice(1, -1);
+ return {
+ type: 'em',
+ raw,
+ text,
+ tokens: this.lexer.inlineTokens(text),
+ };
+ }
+ // Create 'strong' if smallest delimiter has even char count. **a***
+ const text = raw.slice(2, -2);
+ return {
+ type: 'strong',
+ raw,
+ text,
+ tokens: this.lexer.inlineTokens(text),
+ };
+ }
+ }
+ }
+ codespan(src) {
+ const cap = this.rules.inline.code.exec(src);
+ if (cap) {
+ let text = cap[2].replace(this.rules.other.newLineCharGlobal, ' ');
+ const hasNonSpaceChars = this.rules.other.nonSpaceChar.test(text);
+ const hasSpaceCharsOnBothEnds = this.rules.other.startingSpaceChar.test(text) && this.rules.other.endingSpaceChar.test(text);
+ if (hasNonSpaceChars && hasSpaceCharsOnBothEnds) {
+ text = text.substring(1, text.length - 1);
+ }
+ return {
+ type: 'codespan',
+ raw: cap[0],
+ text,
+ };
+ }
+ }
+ br(src) {
+ const cap = this.rules.inline.br.exec(src);
+ if (cap) {
+ return {
+ type: 'br',
+ raw: cap[0],
+ };
+ }
+ }
+ del(src) {
+ const cap = this.rules.inline.del.exec(src);
+ if (cap) {
+ return {
+ type: 'del',
+ raw: cap[0],
+ text: cap[2],
+ tokens: this.lexer.inlineTokens(cap[2]),
+ };
+ }
+ }
+ autolink(src) {
+ const cap = this.rules.inline.autolink.exec(src);
+ if (cap) {
+ let text, href;
+ if (cap[2] === '@') {
+ text = cap[1];
+ href = 'mailto:' + text;
+ }
+ else {
+ text = cap[1];
+ href = text;
+ }
+ return {
+ type: 'link',
+ raw: cap[0],
+ text,
+ href,
+ tokens: [
+ {
+ type: 'text',
+ raw: text,
+ text,
+ },
+ ],
+ };
+ }
+ }
+ url(src) {
+ let cap;
+ if (cap = this.rules.inline.url.exec(src)) {
+ let text, href;
+ if (cap[2] === '@') {
+ text = cap[0];
+ href = 'mailto:' + text;
+ }
+ else {
+ // do extended autolink path validation
+ let prevCapZero;
+ do {
+ prevCapZero = cap[0];
+ cap[0] = this.rules.inline._backpedal.exec(cap[0])?.[0] ?? '';
+ } while (prevCapZero !== cap[0]);
+ text = cap[0];
+ if (cap[1] === 'www.') {
+ href = 'http://' + cap[0];
+ }
+ else {
+ href = cap[0];
+ }
+ }
+ return {
+ type: 'link',
+ raw: cap[0],
+ text,
+ href,
+ tokens: [
+ {
+ type: 'text',
+ raw: text,
+ text,
+ },
+ ],
+ };
+ }
+ }
+ inlineText(src) {
+ const cap = this.rules.inline.text.exec(src);
+ if (cap) {
+ const escaped = this.lexer.state.inRawBlock;
+ return {
+ type: 'text',
+ raw: cap[0],
+ text: cap[0],
+ escaped,
+ };
+ }
+ }
+}
+
+/**
+ * Block Lexer
+ */
+class _Lexer {
+ tokens;
+ options;
+ state;
+ tokenizer;
+ inlineQueue;
+ constructor(options) {
+ // TokenList cannot be created in one go
+ this.tokens = [];
+ this.tokens.links = Object.create(null);
+ this.options = options || _defaults;
+ this.options.tokenizer = this.options.tokenizer || new _Tokenizer();
+ this.tokenizer = this.options.tokenizer;
+ this.tokenizer.options = this.options;
+ this.tokenizer.lexer = this;
+ this.inlineQueue = [];
+ this.state = {
+ inLink: false,
+ inRawBlock: false,
+ top: true,
+ };
+ const rules = {
+ other,
+ block: block.normal,
+ inline: inline.normal,
+ };
+ if (this.options.pedantic) {
+ rules.block = block.pedantic;
+ rules.inline = inline.pedantic;
+ }
+ else if (this.options.gfm) {
+ rules.block = block.gfm;
+ if (this.options.breaks) {
+ rules.inline = inline.breaks;
+ }
+ else {
+ rules.inline = inline.gfm;
+ }
+ }
+ this.tokenizer.rules = rules;
+ }
+ /**
+ * Expose Rules
+ */
+ static get rules() {
+ return {
+ block,
+ inline,
+ };
+ }
+ /**
+ * Static Lex Method
+ */
+ static lex(src, options) {
+ const lexer = new _Lexer(options);
+ return lexer.lex(src);
+ }
+ /**
+ * Static Lex Inline Method
+ */
+ static lexInline(src, options) {
+ const lexer = new _Lexer(options);
+ return lexer.inlineTokens(src);
+ }
+ /**
+ * Preprocessing
+ */
+ lex(src) {
+ src = src.replace(other.carriageReturn, '\n');
+ this.blockTokens(src, this.tokens);
+ for (let i = 0; i < this.inlineQueue.length; i++) {
+ const next = this.inlineQueue[i];
+ this.inlineTokens(next.src, next.tokens);
+ }
+ this.inlineQueue = [];
+ return this.tokens;
+ }
+ blockTokens(src, tokens = [], lastParagraphClipped = false) {
+ if (this.options.pedantic) {
+ src = src.replace(other.tabCharGlobal, ' ').replace(other.spaceLine, '');
+ }
+ while (src) {
+ let token;
+ if (this.options.extensions?.block?.some((extTokenizer) => {
+ if (token = extTokenizer.call({ lexer: this }, src, tokens)) {
+ src = src.substring(token.raw.length);
+ tokens.push(token);
+ return true;
+ }
+ return false;
+ })) {
+ continue;
+ }
+ // newline
+ if (token = this.tokenizer.space(src)) {
+ src = src.substring(token.raw.length);
+ const lastToken = tokens.at(-1);
+ if (token.raw.length === 1 && lastToken !== undefined) {
+ // if there's a single \n as a spacer, it's terminating the last line,
+ // so move it there so that we don't get unnecessary paragraph tags
+ lastToken.raw += '\n';
+ }
+ else {
+ tokens.push(token);
+ }
+ continue;
+ }
+ // code
+ if (token = this.tokenizer.code(src)) {
+ src = src.substring(token.raw.length);
+ const lastToken = tokens.at(-1);
+ // An indented code block cannot interrupt a paragraph.
+ if (lastToken?.type === 'paragraph' || lastToken?.type === 'text') {
+ lastToken.raw += '\n' + token.raw;
+ lastToken.text += '\n' + token.text;
+ this.inlineQueue.at(-1).src = lastToken.text;
+ }
+ else {
+ tokens.push(token);
+ }
+ continue;
+ }
+ // fences
+ if (token = this.tokenizer.fences(src)) {
+ src = src.substring(token.raw.length);
+ tokens.push(token);
+ continue;
+ }
+ // heading
+ if (token = this.tokenizer.heading(src)) {
+ src = src.substring(token.raw.length);
+ tokens.push(token);
+ continue;
+ }
+ // hr
+ if (token = this.tokenizer.hr(src)) {
+ src = src.substring(token.raw.length);
+ tokens.push(token);
+ continue;
+ }
+ // blockquote
+ if (token = this.tokenizer.blockquote(src)) {
+ src = src.substring(token.raw.length);
+ tokens.push(token);
+ continue;
+ }
+ // list
+ if (token = this.tokenizer.list(src)) {
+ src = src.substring(token.raw.length);
+ tokens.push(token);
+ continue;
+ }
+ // html
+ if (token = this.tokenizer.html(src)) {
+ src = src.substring(token.raw.length);
+ tokens.push(token);
+ continue;
+ }
+ // def
+ if (token = this.tokenizer.def(src)) {
+ src = src.substring(token.raw.length);
+ const lastToken = tokens.at(-1);
+ if (lastToken?.type === 'paragraph' || lastToken?.type === 'text') {
+ lastToken.raw += '\n' + token.raw;
+ lastToken.text += '\n' + token.raw;
+ this.inlineQueue.at(-1).src = lastToken.text;
+ }
+ else if (!this.tokens.links[token.tag]) {
+ this.tokens.links[token.tag] = {
+ href: token.href,
+ title: token.title,
+ };
+ }
+ continue;
+ }
+ // table (gfm)
+ if (token = this.tokenizer.table(src)) {
+ src = src.substring(token.raw.length);
+ tokens.push(token);
+ continue;
+ }
+ // lheading
+ if (token = this.tokenizer.lheading(src)) {
+ src = src.substring(token.raw.length);
+ tokens.push(token);
+ continue;
+ }
+ // top-level paragraph
+ // prevent paragraph consuming extensions by clipping 'src' to extension start
+ let cutSrc = src;
+ if (this.options.extensions?.startBlock) {
+ let startIndex = Infinity;
+ const tempSrc = src.slice(1);
+ let tempStart;
+ this.options.extensions.startBlock.forEach((getStartIndex) => {
+ tempStart = getStartIndex.call({ lexer: this }, tempSrc);
+ if (typeof tempStart === 'number' && tempStart >= 0) {
+ startIndex = Math.min(startIndex, tempStart);
+ }
+ });
+ if (startIndex < Infinity && startIndex >= 0) {
+ cutSrc = src.substring(0, startIndex + 1);
+ }
+ }
+ if (this.state.top && (token = this.tokenizer.paragraph(cutSrc))) {
+ const lastToken = tokens.at(-1);
+ if (lastParagraphClipped && lastToken?.type === 'paragraph') {
+ lastToken.raw += '\n' + token.raw;
+ lastToken.text += '\n' + token.text;
+ this.inlineQueue.pop();
+ this.inlineQueue.at(-1).src = lastToken.text;
+ }
+ else {
+ tokens.push(token);
+ }
+ lastParagraphClipped = cutSrc.length !== src.length;
+ src = src.substring(token.raw.length);
+ continue;
+ }
+ // text
+ if (token = this.tokenizer.text(src)) {
+ src = src.substring(token.raw.length);
+ const lastToken = tokens.at(-1);
+ if (lastToken?.type === 'text') {
+ lastToken.raw += '\n' + token.raw;
+ lastToken.text += '\n' + token.text;
+ this.inlineQueue.pop();
+ this.inlineQueue.at(-1).src = lastToken.text;
+ }
+ else {
+ tokens.push(token);
+ }
+ continue;
+ }
+ if (src) {
+ const errMsg = 'Infinite loop on byte: ' + src.charCodeAt(0);
+ if (this.options.silent) {
+ console.error(errMsg);
+ break;
+ }
+ else {
+ throw new Error(errMsg);
+ }
+ }
+ }
+ this.state.top = true;
+ return tokens;
+ }
+ inline(src, tokens = []) {
+ this.inlineQueue.push({ src, tokens });
+ return tokens;
+ }
+ /**
+ * Lexing/Compiling
+ */
+ inlineTokens(src, tokens = []) {
+ // String with links masked to avoid interference with em and strong
+ let maskedSrc = src;
+ let match = null;
+ // Mask out reflinks
+ if (this.tokens.links) {
+ const links = Object.keys(this.tokens.links);
+ if (links.length > 0) {
+ while ((match = this.tokenizer.rules.inline.reflinkSearch.exec(maskedSrc)) != null) {
+ if (links.includes(match[0].slice(match[0].lastIndexOf('[') + 1, -1))) {
+ maskedSrc = maskedSrc.slice(0, match.index)
+ + '[' + 'a'.repeat(match[0].length - 2) + ']'
+ + maskedSrc.slice(this.tokenizer.rules.inline.reflinkSearch.lastIndex);
+ }
+ }
+ }
+ }
+ // Mask out other blocks
+ while ((match = this.tokenizer.rules.inline.blockSkip.exec(maskedSrc)) != null) {
+ maskedSrc = maskedSrc.slice(0, match.index) + '[' + 'a'.repeat(match[0].length - 2) + ']' + maskedSrc.slice(this.tokenizer.rules.inline.blockSkip.lastIndex);
+ }
+ // Mask out escaped characters
+ while ((match = this.tokenizer.rules.inline.anyPunctuation.exec(maskedSrc)) != null) {
+ maskedSrc = maskedSrc.slice(0, match.index) + '++' + maskedSrc.slice(this.tokenizer.rules.inline.anyPunctuation.lastIndex);
+ }
+ let keepPrevChar = false;
+ let prevChar = '';
+ while (src) {
+ if (!keepPrevChar) {
+ prevChar = '';
+ }
+ keepPrevChar = false;
+ let token;
+ // extensions
+ if (this.options.extensions?.inline?.some((extTokenizer) => {
+ if (token = extTokenizer.call({ lexer: this }, src, tokens)) {
+ src = src.substring(token.raw.length);
+ tokens.push(token);
+ return true;
+ }
+ return false;
+ })) {
+ continue;
+ }
+ // escape
+ if (token = this.tokenizer.escape(src)) {
+ src = src.substring(token.raw.length);
+ tokens.push(token);
+ continue;
+ }
+ // tag
+ if (token = this.tokenizer.tag(src)) {
+ src = src.substring(token.raw.length);
+ tokens.push(token);
+ continue;
+ }
+ // link
+ if (token = this.tokenizer.link(src)) {
+ src = src.substring(token.raw.length);
+ tokens.push(token);
+ continue;
+ }
+ // reflink, nolink
+ if (token = this.tokenizer.reflink(src, this.tokens.links)) {
+ src = src.substring(token.raw.length);
+ const lastToken = tokens.at(-1);
+ if (token.type === 'text' && lastToken?.type === 'text') {
+ lastToken.raw += token.raw;
+ lastToken.text += token.text;
+ }
+ else {
+ tokens.push(token);
+ }
+ continue;
+ }
+ // em & strong
+ if (token = this.tokenizer.emStrong(src, maskedSrc, prevChar)) {
+ src = src.substring(token.raw.length);
+ tokens.push(token);
+ continue;
+ }
+ // code
+ if (token = this.tokenizer.codespan(src)) {
+ src = src.substring(token.raw.length);
+ tokens.push(token);
+ continue;
+ }
+ // br
+ if (token = this.tokenizer.br(src)) {
+ src = src.substring(token.raw.length);
+ tokens.push(token);
+ continue;
+ }
+ // del (gfm)
+ if (token = this.tokenizer.del(src)) {
+ src = src.substring(token.raw.length);
+ tokens.push(token);
+ continue;
+ }
+ // autolink
+ if (token = this.tokenizer.autolink(src)) {
+ src = src.substring(token.raw.length);
+ tokens.push(token);
+ continue;
+ }
+ // url (gfm)
+ if (!this.state.inLink && (token = this.tokenizer.url(src))) {
+ src = src.substring(token.raw.length);
+ tokens.push(token);
+ continue;
+ }
+ // text
+ // prevent inlineText consuming extensions by clipping 'src' to extension start
+ let cutSrc = src;
+ if (this.options.extensions?.startInline) {
+ let startIndex = Infinity;
+ const tempSrc = src.slice(1);
+ let tempStart;
+ this.options.extensions.startInline.forEach((getStartIndex) => {
+ tempStart = getStartIndex.call({ lexer: this }, tempSrc);
+ if (typeof tempStart === 'number' && tempStart >= 0) {
+ startIndex = Math.min(startIndex, tempStart);
+ }
+ });
+ if (startIndex < Infinity && startIndex >= 0) {
+ cutSrc = src.substring(0, startIndex + 1);
+ }
+ }
+ if (token = this.tokenizer.inlineText(cutSrc)) {
+ src = src.substring(token.raw.length);
+ if (token.raw.slice(-1) !== '_') { // Track prevChar before string of ____ started
+ prevChar = token.raw.slice(-1);
+ }
+ keepPrevChar = true;
+ const lastToken = tokens.at(-1);
+ if (lastToken?.type === 'text') {
+ lastToken.raw += token.raw;
+ lastToken.text += token.text;
+ }
+ else {
+ tokens.push(token);
+ }
+ continue;
+ }
+ if (src) {
+ const errMsg = 'Infinite loop on byte: ' + src.charCodeAt(0);
+ if (this.options.silent) {
+ console.error(errMsg);
+ break;
+ }
+ else {
+ throw new Error(errMsg);
+ }
+ }
+ }
+ return tokens;
+ }
+}
+
+/**
+ * Renderer
+ */
+class _Renderer {
+ options;
+ parser; // set by the parser
+ constructor(options) {
+ this.options = options || _defaults;
+ }
+ space(token) {
+ return '';
+ }
+ code({ text, lang, escaped }) {
+ const langString = (lang || '').match(other.notSpaceStart)?.[0];
+ const code = text.replace(other.endingNewline, '') + '\n';
+ if (!langString) {
+ return ''
+ + (escaped ? code : escape(code, true))
+ + '
\n';
+ }
+ return ''
+ + (escaped ? code : escape(code, true))
+ + '
\n';
+ }
+ blockquote({ tokens }) {
+ const body = this.parser.parse(tokens);
+ return `\n${body}
\n`;
+ }
+ html({ text }) {
+ return text;
+ }
+ heading({ tokens, depth }) {
+ return `${this.parser.parseInline(tokens)}\n`;
+ }
+ hr(token) {
+ return '
\n';
+ }
+ list(token) {
+ const ordered = token.ordered;
+ const start = token.start;
+ let body = '';
+ for (let j = 0; j < token.items.length; j++) {
+ const item = token.items[j];
+ body += this.listitem(item);
+ }
+ const type = ordered ? 'ol' : 'ul';
+ const startAttr = (ordered && start !== 1) ? (' start="' + start + '"') : '';
+ return '<' + type + startAttr + '>\n' + body + '\n';
+ }
+ listitem(item) {
+ let itemBody = '';
+ if (item.task) {
+ const checkbox = this.checkbox({ checked: !!item.checked });
+ if (item.loose) {
+ if (item.tokens[0]?.type === 'paragraph') {
+ item.tokens[0].text = checkbox + ' ' + item.tokens[0].text;
+ if (item.tokens[0].tokens && item.tokens[0].tokens.length > 0 && item.tokens[0].tokens[0].type === 'text') {
+ item.tokens[0].tokens[0].text = checkbox + ' ' + escape(item.tokens[0].tokens[0].text);
+ item.tokens[0].tokens[0].escaped = true;
+ }
+ }
+ else {
+ item.tokens.unshift({
+ type: 'text',
+ raw: checkbox + ' ',
+ text: checkbox + ' ',
+ escaped: true,
+ });
+ }
+ }
+ else {
+ itemBody += checkbox + ' ';
+ }
+ }
+ itemBody += this.parser.parse(item.tokens, !!item.loose);
+ return `${itemBody}\n`;
+ }
+ checkbox({ checked }) {
+ return '';
+ }
+ paragraph({ tokens }) {
+ return `${this.parser.parseInline(tokens)}
\n`;
+ }
+ table(token) {
+ let header = '';
+ // header
+ let cell = '';
+ for (let j = 0; j < token.header.length; j++) {
+ cell += this.tablecell(token.header[j]);
+ }
+ header += this.tablerow({ text: cell });
+ let body = '';
+ for (let j = 0; j < token.rows.length; j++) {
+ const row = token.rows[j];
+ cell = '';
+ for (let k = 0; k < row.length; k++) {
+ cell += this.tablecell(row[k]);
+ }
+ body += this.tablerow({ text: cell });
+ }
+ if (body)
+ body = `${body}`;
+ return '