marked/lib/marked.esm.js

/**
 * marked v7.0.3 - a markdown parser
 * Copyright (c) 2011-2023, Christopher Jeffrey. (MIT Licensed)
 * https://github.com/markedjs/marked
 */

/**
 * DO NOT EDIT THIS FILE
 * The code in this file is generated from files in ./src/
 */

/**
 * Gets the original marked default options.
 */
function _getDefaults() {
    return {
        async: false,
        baseUrl: null,
        breaks: false,
        extensions: null,
        gfm: true,
        headerIds: false,
        headerPrefix: '',
        highlight: null,
        hooks: null,
        langPrefix: 'language-',
        mangle: false,
        pedantic: false,
        renderer: null,
        sanitize: false,
        sanitizer: null,
        silent: false,
        smartypants: false,
        tokenizer: null,
        walkTokens: null,
        xhtml: false
    };
}
let _defaults = _getDefaults();
function changeDefaults(newDefaults) {
    _defaults = newDefaults;
}

/**
 * Helpers
 */
const escapeTest = /[&<>"']/;
const escapeReplace = new RegExp(escapeTest.source, 'g');
const escapeTestNoEncode = /[<>"']|&(?!(#\d{1,7}|#[Xx][a-fA-F0-9]{1,6}|\w+);)/;
const escapeReplaceNoEncode = new RegExp(escapeTestNoEncode.source, 'g');
const escapeReplacements = {
    '&': '&amp;',
    '<': '&lt;',
    '>': '&gt;',
    '"': '&quot;',
    "'": '&#39;'
};
const getEscapeReplacement = (ch) => escapeReplacements[ch];
function escape(html, encode) {
    if (encode) {
        if (escapeTest.test(html)) {
            return html.replace(escapeReplace, getEscapeReplacement);
        }
    }
    else {
        if (escapeTestNoEncode.test(html)) {
            return html.replace(escapeReplaceNoEncode, getEscapeReplacement);
        }
    }
    return html;
}
const unescapeTest = /&(#(?:\d+)|(?:#x[0-9A-Fa-f]+)|(?:\w+));?/ig;
function unescape(html) {
    // explicitly match decimal, hex, and named HTML entities
    return html.replace(unescapeTest, (_, n) => {
        n = n.toLowerCase();
        if (n === 'colon')
            return ':';
        if (n.charAt(0) === '#') {
            return n.charAt(1) === 'x'
                ? String.fromCharCode(parseInt(n.substring(2), 16))
                : String.fromCharCode(+n.substring(1));
        }
        return '';
    });
}
const caret = /(^|[^\[])\^/g;
function edit(regex, opt) {
    regex = typeof regex === 'string' ? regex : regex.source;
    opt = opt || '';
    const obj = {
        replace: (name, val) => {
            val = typeof val === 'object' && 'source' in val ? val.source : val;
            val = val.replace(caret, '$1');
            regex = regex.replace(name, val);
            return obj;
        },
        getRegex: () => {
            return new RegExp(regex, opt);
        }
    };
    return obj;
}
const nonWordAndColonTest = /[^\w:]/g;
const originIndependentUrl = /^$|^[a-z][a-z0-9+.-]*:|^[?#]/i;
function cleanUrl(sanitize, base, href) {
    if (sanitize) {
        let prot;
        try {
            prot = decodeURIComponent(unescape(href))
                .replace(nonWordAndColonTest, '')
                .toLowerCase();
        }
        catch (e) {
            return null;
        }
        if (prot.indexOf('javascript:') === 0 || prot.indexOf('vbscript:') === 0 || prot.indexOf('data:') === 0) {
            return null;
        }
    }
    if (base && !originIndependentUrl.test(href)) {
        href = resolveUrl(base, href);
    }
    try {
        href = encodeURI(href).replace(/%25/g, '%');
    }
    catch (e) {
        return null;
    }
    return href;
}
const baseUrls = {};
const justDomain = /^[^:]+:\/*[^/]*$/;
const protocol = /^([^:]+:)[\s\S]*$/;
const domain = /^([^:]+:\/*[^/]*)[\s\S]*$/;
function resolveUrl(base, href) {
    if (!baseUrls[' ' + base]) {
        // we can ignore everything in base after the last slash of its path component,
        // but we might need to add _that_
        // https://tools.ietf.org/html/rfc3986#section-3
        if (justDomain.test(base)) {
            baseUrls[' ' + base] = base + '/';
        }
        else {
            baseUrls[' ' + base] = rtrim(base, '/', true);
        }
    }
    base = baseUrls[' ' + base];
    const relativeBase = base.indexOf(':') === -1;
    if (href.substring(0, 2) === '//') {
        if (relativeBase) {
            return href;
        }
        return base.replace(protocol, '$1') + href;
    }
    else if (href.charAt(0) === '/') {
        if (relativeBase) {
            return href;
        }
        return base.replace(domain, '$1') + href;
    }
    else {
        return base + href;
    }
}
const noopTest = { exec: () => null };
function splitCells(tableRow, count) {
    // ensure that every cell-delimiting pipe has a space
    // before it to distinguish it from an escaped pipe
    const row = tableRow.replace(/\|/g, (match, offset, str) => {
        let escaped = false;
        let curr = offset;
        while (--curr >= 0 && str[curr] === '\\')
            escaped = !escaped;
        if (escaped) {
            // odd number of slashes means | is escaped
            // so we leave it alone
            return '|';
        }
        else {
            // add space before unescaped |
            return ' |';
        }
    }), cells = row.split(/ \|/);
    let i = 0;
    // First/last cell in a row cannot be empty if it has no leading/trailing pipe
    if (!cells[0].trim()) {
        cells.shift();
    }
    if (cells.length > 0 && !cells[cells.length - 1].trim()) {
        cells.pop();
    }
    if (count) {
        if (cells.length > count) {
            cells.splice(count);
        }
        else {
            while (cells.length < count)
                cells.push('');
        }
    }
    for (; i < cells.length; i++) {
        // leading or trailing whitespace is ignored per the gfm spec
        cells[i] = cells[i].trim().replace(/\\\|/g, '|');
    }
    return cells;
}
/**
 * Remove trailing 'c's. Equivalent to str.replace(/c*$/, '').
 * /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 && !invert) {
            suffLen++;
        }
        else if (currChar !== c && invert) {
            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 checkDeprecations(opt, callback) {
    if (!opt || opt.silent) {
        return;
    }
    if (callback) {
        console.warn('marked(): callback is deprecated since version 5.0.0, should not be used and will be removed in the future. Read more here: https://marked.js.org/using_pro#async');
    }
    if (opt.sanitize || opt.sanitizer) {
        console.warn('marked(): sanitize and sanitizer parameters are deprecated since version 0.7.0, should not be used and will be removed in the future. Read more here: https://marked.js.org/#/USING_ADVANCED.md#options');
    }
    if (opt.highlight || opt.langPrefix !== 'language-') {
        console.warn('marked(): highlight and langPrefix parameters are deprecated since version 5.0.0, should not be used and will be removed in the future. Instead use https://www.npmjs.com/package/marked-highlight.');
    }
    if (opt.mangle) {
        console.warn('marked(): mangle parameter is enabled by default, but is deprecated since version 5.0.0, and will be removed in the future. To clear this warning, install https://www.npmjs.com/package/marked-mangle, or disable by setting `{mangle: false}`.');
    }
    if (opt.baseUrl) {
        console.warn('marked(): baseUrl parameter is deprecated since version 5.0.0, should not be used and will be removed in the future. Instead use https://www.npmjs.com/package/marked-base-url.');
    }
    if (opt.smartypants) {
        console.warn('marked(): smartypants parameter is deprecated since version 5.0.0, should not be used and will be removed in the future. Instead use https://www.npmjs.com/package/marked-smartypants.');
    }
    if (opt.xhtml) {
        console.warn('marked(): xhtml parameter is deprecated since version 5.0.0, should not be used and will be removed in the future. Instead use https://www.npmjs.com/package/marked-xhtml.');
    }
    if (opt.headerIds || opt.headerPrefix) {
        console.warn('marked(): headerIds and headerPrefix parameters enabled by default, but are deprecated since version 5.0.0, and will be removed in the future. To clear this warning, install  https://www.npmjs.com/package/marked-gfm-heading-id, or disable by setting `{headerIds: false}`.');
    }
}

function outputLink(cap, link, raw, lexer) {
    const href = link.href;
    const title = link.title ? escape(link.title) : null;
    const text = cap[1].replace(/\\([\[\]])/g, '$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: escape(text)
    };
}
function indentCodeCompensation(raw, text) {
    const matchIndentToCode = raw.match(/^(\s+)(?:```)/);
    if (matchIndentToCode === null) {
        return text;
    }
    const indentToCode = matchIndentToCode[1];
    return text
        .split('\n')
        .map(node => {
        const matchIndentInNode = node.match(/^\s+/);
        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;
    // TODO: Fix this rules type
    rules;
    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(/^ {1,4}/gm, '');
            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] || '');
            return {
                type: 'code',
                raw,
                lang: cap[2] ? cap[2].trim().replace(this.rules.inline._escapes, '$1') : cap[2],
                text
            };
        }
    }
    heading(src) {
        const cap = this.rules.block.heading.exec(src);
        if (cap) {
            let text = cap[2].trim();
            // remove trailing #s
            if (/#$/.test(text)) {
                const trimmed = rtrim(text, '#');
                if (this.options.pedantic) {
                    text = trimmed.trim();
                }
                else if (!trimmed || / $/.test(trimmed)) {
                    // CommonMark requires space before trailing #s
                    text = trimmed.trim();
                }
            }
            return {
                type: 'heading',
                raw: cap[0],
                depth: cap[1].length,
                text,
                tokens: this.lexer.inline(text)
            };
        }
    }
    hr(src) {
        const cap = this.rules.block.hr.exec(src);
        if (cap) {
            return {
                type: 'hr',
                raw: cap[0]
            };
        }
    }
    blockquote(src) {
        const cap = this.rules.block.blockquote.exec(src);
        if (cap) {
            const text = cap[0].replace(/^ *>[ \t]?/gm, '');
            const top = this.lexer.state.top;
            this.lexer.state.top = true;
            const tokens = this.lexer.blockTokens(text);
            this.lexer.state.top = top;
            return {
                type: 'blockquote',
                raw: cap[0],
                tokens,
                text
            };
        }
    }
    list(src) {
        let cap = this.rules.block.list.exec(src);
        if (cap) {
            let bull = cap[1].trim();
            const isordered = bull.length > 1;
            const list = {
                type: 'list',
                raw: '',
                ordered: isordered,
                start: isordered ? +bull.slice(0, -1) : '',
                loose: false,
                items: []
            };
            bull = isordered ? `\\d{1,9}\\${bull.slice(-1)}` : `\\${bull}`;
            if (this.options.pedantic) {
                bull = isordered ? bull : '[*+-]';
            }
            // Get next list item
            const itemRegex = new RegExp(`^( {0,3}${bull})((?:[\t ][^\\n]*)?(?:\\n|$))`);
            let raw = '';
            let itemContents = '';
            let endsWithBlankLine = false;
            // Check if current bullet point can start a new List Item
            while (src) {
                let endEarly = false;
                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(/^\t+/, (t) => ' '.repeat(3 * t.length));
                let nextLine = src.split('\n', 1)[0];
                let indent = 0;
                if (this.options.pedantic) {
                    indent = 2;
                    itemContents = line.trimLeft();
                }
                else {
                    indent = cap[2].search(/[^ ]/); // 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;
                }
                let blankLine = false;
                if (!line && /^ *$/.test(nextLine)) { // Items begin with at most one blank line
                    raw += nextLine + '\n';
                    src = src.substring(nextLine.length + 1);
                    endEarly = true;
                }
                if (!endEarly) {
                    const nextBulletRegex = new RegExp(`^ {0,${Math.min(3, indent - 1)}}(?:[*+-]|\\d{1,9}[.)])((?:[ \t][^\\n]*)?(?:\\n|$))`);
                    const hrRegex = new RegExp(`^ {0,${Math.min(3, indent - 1)}}((?:- *){3,}|(?:_ *){3,}|(?:\\* *){3,})(?:\\n+|$)`);
                    const fencesBeginRegex = new RegExp(`^ {0,${Math.min(3, indent - 1)}}(?:\`\`\`|~~~)`);
                    const headingBeginRegex = new RegExp(`^ {0,${Math.min(3, indent - 1)}}#`);
                    // Check if following lines should be included in List Item
                    while (src) {
                        const rawLine = src.split('\n', 1)[0];
                        nextLine = rawLine;
                        // Re-align to follow commonmark nesting rules
                        if (this.options.pedantic) {
                            nextLine = nextLine.replace(/^ {1,4}(?=( {4})*[^ ])/g, '  ');
                        }
                        // 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 new bullet
                        if (nextBulletRegex.test(nextLine)) {
                            break;
                        }
                        // Horizontal rule found
                        if (hrRegex.test(src)) {
                            break;
                        }
                        if (nextLine.search(/[^ ]/) >= indent || !nextLine.trim()) { // Dedent if possible
                            itemContents += '\n' + nextLine.slice(indent);
                        }
                        else {
                            // not enough indentation
                            if (blankLine) {
                                break;
                            }
                            // paragraph continuation unless last line was a different block level element
                            if (line.search(/[^ ]/) >= 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 = nextLine.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 (/\n *\n *$/.test(raw)) {
                        endsWithBlankLine = true;
                    }
                }
                let istask = null;
                let ischecked;
                // Check for task list items
                if (this.options.gfm) {
                    istask = /^\[[ xX]\] /.exec(itemContents);
                    if (istask) {
                        ischecked = istask[0] !== '[ ] ';
                        itemContents = itemContents.replace(/^\[[ xX]\] +/, '');
                    }
                }
                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
            list.items[list.items.length - 1].raw = raw.trimRight();
            list.items[list.items.length - 1].text = itemContents.trimRight();
            list.raw = list.raw.trimRight();
            // 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 => /\n.*\n/.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: !this.options.sanitizer
                    && (cap[1] === 'pre' || cap[1] === 'script' || cap[1] === 'style'),
                text: cap[0]
            };
            if (this.options.sanitize) {
                const text = this.options.sanitizer ? this.options.sanitizer(cap[0]) : escape(cap[0]);
                const paragraph = token;
                paragraph.type = 'paragraph';
                paragraph.text = text;
                paragraph.tokens = this.lexer.inline(text);
            }
            return token;
        }
    }
    def(src) {
        const cap = this.rules.block.def.exec(src);
        if (cap) {
            const tag = cap[1].toLowerCase().replace(/\s+/g, ' ');
            const href = cap[2] ? cap[2].replace(/^<(.*)>$/, '$1').replace(this.rules.inline._escapes, '$1') : '';
            const title = cap[3] ? cap[3].substring(1, cap[3].length - 1).replace(this.rules.inline._escapes, '$1') : cap[3];
            return {
                type: 'def',
                tag,
                raw: cap[0],
                href,
                title
            };
        }
    }
    table(src) {
        const cap = this.rules.block.table.exec(src);
        if (cap) {
            const item = {
                type: 'table',
                raw: cap[0],
                header: splitCells(cap[1]).map(c => {
                    return { text: c, tokens: [] };
                }),
                align: cap[2].replace(/^ *|\| *$/g, '').split(/ *\| */),
                rows: cap[3] && cap[3].trim() ? cap[3].replace(/\n[ \t]*$/, '').split('\n') : []
            };
            if (item.header.length === item.align.length) {
                let l = item.align.length;
                let i, j, k, row;
                for (i = 0; i < l; i++) {
                    const align = item.align[i];
                    if (align) {
                        if (/^ *-+: *$/.test(align)) {
                            item.align[i] = 'right';
                        }
                        else if (/^ *:-+: *$/.test(align)) {
                            item.align[i] = 'center';
                        }
                        else if (/^ *:-+ *$/.test(align)) {
                            item.align[i] = 'left';
                        }
                        else {
                            item.align[i] = null;
                        }
                    }
                }
                l = item.rows.length;
                for (i = 0; i < l; i++) {
                    item.rows[i] = splitCells(item.rows[i], item.header.length).map(c => {
                        return { text: c, tokens: [] };
                    });
                }
                // parse child tokens inside headers and cells
                // header child tokens
                l = item.header.length;
                for (j = 0; j < l; j++) {
                    item.header[j].tokens = this.lexer.inline(item.header[j].text);
                }
                // cell child tokens
                l = item.rows.length;
                for (j = 0; j < l; j++) {
                    row = item.rows[j];
                    for (k = 0; k < row.length; k++) {
                        row[k].tokens = this.lexer.inline(row[k].text);
                    }
                }
                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: escape(cap[1])
            };
        }
    }
    tag(src) {
        const cap = this.rules.inline.tag.exec(src);
        if (cap) {
            if (!this.lexer.state.inLink && /^<a /i.test(cap[0])) {
                this.lexer.state.inLink = true;
            }
            else if (this.lexer.state.inLink && /^<\/a>/i.test(cap[0])) {
                this.lexer.state.inLink = false;
            }
            if (!this.lexer.state.inRawBlock && /^<(pre|code|kbd|script)(\s|>)/i.test(cap[0])) {
                this.lexer.state.inRawBlock = true;
            }
            else if (this.lexer.state.inRawBlock && /^<\/(pre|code|kbd|script)(\s|>)/i.test(cap[0])) {
                this.lexer.state.inRawBlock = false;
            }
            return {
                type: this.options.sanitize
                    ? 'text'
                    : 'html',
                raw: cap[0],
                inLink: this.lexer.state.inLink,
                inRawBlock: this.lexer.state.inRawBlock,
                block: false,
                text: this.options.sanitize
                    ? (this.options.sanitizer
                        ? this.options.sanitizer(cap[0])
                        : escape(cap[0]))
                    : cap[0]
            };
        }
    }
    link(src) {
        const cap = this.rules.inline.link.exec(src);
        if (cap) {
            const trimmedUrl = cap[2].trim();
            if (!this.options.pedantic && /^</.test(trimmedUrl)) {
                // commonmark requires matching angle brackets
                if (!(/>$/.test(trimmedUrl))) {
                    return;
                }
                // ending angle bracket cannot be escaped
                const rtrimSlash = rtrim(trimmedUrl.slice(0, -1), '\\');
                if ((trimmedUrl.length - rtrimSlash.length) % 2 === 0) {
                    return;
                }
            }
            else {
                // find closing parenthesis
                const lastParenIndex = findClosingBracket(cap[2], '()');
                if (lastParenIndex > -1) {
                    const start = cap[0].indexOf('!') === 0 ? 5 : 4;
                    const linkLen = start + cap[1].length + lastParenIndex;
                    cap[2] = cap[2].substring(0, lastParenIndex);
                    cap[0] = cap[0].substring(0, linkLen).trim();
                    cap[3] = '';
                }
            }
            let href = cap[2];
            let title = '';
            if (this.options.pedantic) {
                // split pedantic href and title
                const link = /^([^'"]*[^\s])\s+(['"])(.*)\2/.exec(href);
                if (link) {
                    href = link[1];
                    title = link[3];
                }
            }
            else {
                title = cap[3] ? cap[3].slice(1, -1) : '';
            }
            href = href.trim();
            if (/^</.test(href)) {
                if (this.options.pedantic && !(/>$/.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._escapes, '$1') : href,
                title: title ? title.replace(this.rules.inline._escapes, '$1') : title
            }, cap[0], this.lexer);
        }
    }
    reflink(src, links) {
        let cap;
        if ((cap = this.rules.inline.reflink.exec(src))
            || (cap = this.rules.inline.nolink.exec(src))) {
            let link = (cap[2] || cap[1]).replace(/\s+/g, ' ');
            link = links[link.toLowerCase()];
            if (!link) {
                const text = cap[0].charAt(0);
                return {
                    type: 'text',
                    raw: text,
                    text
                };
            }
            return outputLink(cap, link, cap[0], this.lexer);
        }
    }
    emStrong(src, maskedSrc, prevChar = '') {
        let match = this.rules.inline.emStrong.lDelim.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(/[\p{L}\p{N}]/u))
            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.emStrong.rDelimAst : this.rules.inline.emStrong.rDelimUnd;
            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);
                const raw = [...src].slice(0, lLength + match.index + rLength + 1).join('');
                // 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(/\n/g, ' ');
            const hasNonSpaceChars = /[^ ]/.test(text);
            const hasSpaceCharsOnBothEnds = /^ /.test(text) && / $/.test(text);
            if (hasNonSpaceChars && hasSpaceCharsOnBothEnds) {
                text = text.substring(1, text.length - 1);
            }
            text = escape(text, true);
            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, mangle) {
        const cap = this.rules.inline.autolink.exec(src);
        if (cap) {
            let text, href;
            if (cap[2] === '@') {
                text = escape(this.options.mangle ? mangle(cap[1]) : cap[1]);
                href = 'mailto:' + text;
            }
            else {
                text = escape(cap[1]);
                href = text;
            }
            return {
                type: 'link',
                raw: cap[0],
                text,
                href,
                tokens: [
                    {
                        type: 'text',
                        raw: text,
                        text
                    }
                ]
            };
        }
    }
    url(src, mangle) {
        let cap;
        if (cap = this.rules.inline.url.exec(src)) {
            let text, href;
            if (cap[2] === '@') {
                text = escape(this.options.mangle ? mangle(cap[0]) : 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 = escape(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, smartypants) {
        const cap = this.rules.inline.text.exec(src);
        if (cap) {
            let text;
            if (this.lexer.state.inRawBlock) {
                text = this.options.sanitize ? (this.options.sanitizer ? this.options.sanitizer(cap[0]) : escape(cap[0])) : cap[0];
            }
            else {
                text = escape(this.options.smartypants ? smartypants(cap[0]) : cap[0]);
            }
            return {
                type: 'text',
                raw: cap[0],
                text
            };
        }
    }
}

/**
 * Block-Level Grammar
 */
// Not all rules are defined in the object literal
// @ts-expect-error
const block = {
    newline: /^(?: *(?:\n|$))+/,
    code: /^( {4}[^\n]+(?:\n(?: *(?:\n|$))*)?)+/,
    fences: /^ {0,3}(`{3,}(?=[^`\n]*(?:\n|$))|~{3,})([^\n]*)(?:\n|$)(?:|([\s\S]*?)(?:\n|$))(?: {0,3}\1[~`]* *(?=\n|$)|$)/,
    hr: /^ {0,3}((?:-[\t ]*){3,}|(?:_[ \t]*){3,}|(?:\*[ \t]*){3,})(?:\n+|$)/,
    heading: /^ {0,3}(#{1,6})(?=\s|$)(.*)(?:\n+|$)/,
    blockquote: /^( {0,3}> ?(paragraph|[^\n]*)(?:\n|$))+/,
    list: /^( {0,3}bull)([ \t][^\n]+?)?(?:\n|$)/,
    html: '^ {0,3}(?:' // optional indentation
        + '<(script|pre|style|textarea)[\\s>][\\s\\S]*?(?:</\\1>[^\\n]*\\n+|$)' // (1)
        + '|comment[^\\n]*(\\n+|$)' // (2)
        + '|<\\?[\\s\\S]*?(?:\\?>\\n*|$)' // (3)
        + '|<![A-Z][\\s\\S]*?(?:>\\n*|$)' // (4)
        + '|<!\\[CDATA\\[[\\s\\S]*?(?:\\]\\]>\\n*|$)' // (5)
        + '|</?(tag)(?: +|\\n|/?>)[\\s\\S]*?(?:(?:\\n *)+\\n|$)' // (6)
        + '|<(?!script|pre|style|textarea)([a-z][\\w-]*)(?:attribute)*? */?>(?=[ \\t]*(?:\\n|$))[\\s\\S]*?(?:(?:\\n *)+\\n|$)' // (7) open tag
        + '|</(?!script|pre|style|textarea)[a-z][\\w-]*\\s*>(?=[ \\t]*(?:\\n|$))[\\s\\S]*?(?:(?:\\n *)+\\n|$)' // (7) closing tag
        + ')',
    def: /^ {0,3}\[(label)\]: *(?:\n *)?([^<\s][^\s]*|<.*?>)(?:(?: +(?:\n *)?| *\n *)(title))? *(?:\n+|$)/,
    table: noopTest,
    lheading: /^((?:(?!^bull ).|\n(?!\n|bull ))+?)\n {0,3}(=+|-+) *(?:\n+|$)/,
    // regex template, placeholders will be replaced according to different paragraph
    // interruption rules of commonmark and the original markdown spec:
    _paragraph: /^([^\n]+(?:\n(?!hr|heading|lheading|blockquote|fences|list|html|table| +\n)[^\n]+)*)/,
    text: /^[^\n]+/
};
block._label = /(?!\s*\])(?:\\.|[^\[\]\\])+/;
block._title = /(?:"(?:\\"?|[^"\\])*"|'[^'\n]*(?:\n[^'\n]+)*\n?'|\([^()]*\))/;
block.def = edit(block.def)
    .replace('label', block._label)
    .replace('title', block._title)
    .getRegex();
block.bullet = /(?:[*+-]|\d{1,9}[.)])/;
block.listItemStart = edit(/^( *)(bull) */)
    .replace('bull', block.bullet)
    .getRegex();
block.list = edit(block.list)
    .replace(/bull/g, block.bullet)
    .replace('hr', '\\n+(?=\\1?(?:(?:- *){3,}|(?:_ *){3,}|(?:\\* *){3,})(?:\\n+|$))')
    .replace('def', '\\n+(?=' + block.def.source + ')')
    .getRegex();
block._tag = 'address|article|aside|base|basefont|blockquote|body|caption'
    + '|center|col|colgroup|dd|details|dialog|dir|div|dl|dt|fieldset|figcaption'
    + '|figure|footer|form|frame|frameset|h[1-6]|head|header|hr|html|iframe'
    + '|legend|li|link|main|menu|menuitem|meta|nav|noframes|ol|optgroup|option'
    + '|p|param|section|source|summary|table|tbody|td|tfoot|th|thead|title|tr'
    + '|track|ul';
block._comment = /<!--(?!-?>)[\s\S]*?(?:-->|$)/;
block.html = edit(block.html, 'i')
    .replace('comment', block._comment)
    .replace('tag', block._tag)
    .replace('attribute', / +[a-zA-Z:_][\w.:-]*(?: *= *"[^"\n]*"| *= *'[^'\n]*'| *= *[^\s"'=<>`]+)?/)
    .getRegex();
block.lheading = edit(block.lheading)
    .replace(/bull/g, block.bullet) // lists can interrupt
    .getRegex();
block.paragraph = edit(block._paragraph)
    .replace('hr', block.hr)
    .replace('heading', ' {0,3}#{1,6} ')
    .replace('|lheading', '') // setex 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', '</?(?:tag)(?: +|\\n|/?>)|<(?:script|pre|style|textarea|!--)')
    .replace('tag', block._tag) // pars can be interrupted by type (6) html blocks
    .getRegex();
block.blockquote = edit(block.blockquote)
    .replace('paragraph', block.paragraph)
    .getRegex();
/**
 * Normal Block Grammar
 */
block.normal = { ...block };
/**
 * GFM Block Grammar
 */
block.gfm = {
    ...block.normal,
    table: '^ *([^\\n ].*\\|.*)\\n' // Header
        + ' {0,3}(?:\\| *)?(:?-+:? *(?:\\| *:?-+:? *)*)(?:\\| *)?' // Align
        + '(?:\\n((?:(?! *\\n|hr|heading|blockquote|code|fences|list|html).*(?:\\n|$))*)\\n*|$)' // Cells
};
block.gfm.table = edit(block.gfm.table)
    .replace('hr', block.hr)
    .replace('heading', ' {0,3}#{1,6} ')
    .replace('blockquote', ' {0,3}>')
    .replace('code', ' {4}[^\\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', '</?(?:tag)(?: +|\\n|/?>)|<(?:script|pre|style|textarea|!--)')
    .replace('tag', block._tag) // tables can be interrupted by type (6) html blocks
    .getRegex();
block.gfm.paragraph = edit(block._paragraph)
    .replace('hr', block.hr)
    .replace('heading', ' {0,3}#{1,6} ')
    .replace('|lheading', '') // setex headings don't interrupt commonmark paragraphs
    .replace('table', block.gfm.table) // 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', '</?(?:tag)(?: +|\\n|/?>)|<(?:script|pre|style|textarea|!--)')
    .replace('tag', block._tag) // pars can be interrupted by type (6) html blocks
    .getRegex();
/**
 * Pedantic grammar (original John Gruber's loose markdown specification)
 */
block.pedantic = {
    ...block.normal,
    html: edit('^ *(?:comment *(?:\\n|\\s*$)'
        + '|<(tag)[\\s\\S]+?</\\1> *(?:\\n{2,}|\\s*$)' // closed tag
        + '|<tag(?:"[^"]*"|\'[^\']*\'|\\s[^\'"/>\\s]*)*?/?> *(?:\\n{2,}|\\s*$))')
        .replace('comment', block._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: /^ *\[([^\]]+)\]: *<?([^\s>]+)>?(?: +(["(][^\n]+[")]))? *(?:\n+|$)/,
    heading: /^(#{1,6})(.*)(?:\n+|$)/,
    fences: noopTest,
    lheading: /^(.+?)\n {0,3}(=+|-+) *(?:\n+|$)/,
    paragraph: edit(block.normal._paragraph)
        .replace('hr', block.hr)
        .replace('heading', ' *#{1,6} *[^\n]')
        .replace('lheading', block.lheading)
        .replace('blockquote', ' {0,3}>')
        .replace('|fences', '')
        .replace('|list', '')
        .replace('|html', '')
        .getRegex()
};
/**
 * Inline-Level Grammar
 */
// Not all rules are defined in the object literal
// @ts-expect-error
const inline = {
    escape: /^\\([!"#$%&'()*+,\-./:;<=>?@\[\]\\^_`{|}~])/,
    autolink: /^<(scheme:[^\s\x00-\x1f<>]*|email)>/,
    url: noopTest,
    tag: '^comment'
        + '|^</[a-zA-Z][\\w:-]*\\s*>' // self-closing tag
        + '|^<[a-zA-Z][\\w-]*(?:attribute)*?\\s*/?>' // open tag
        + '|^<\\?[\\s\\S]*?\\?>' // processing instruction, e.g. <?php ?>
        + '|^<![a-zA-Z]+\\s[\\s\\S]*?>' // declaration, e.g. <!DOCTYPE html>
        + '|^<!\\[CDATA\\[[\\s\\S]*?\\]\\]>',
    link: /^!?\[(label)\]\(\s*(href)(?:\s+(title))?\s*\)/,
    reflink: /^!?\[(label)\]\[(ref)\]/,
    nolink: /^!?\[(ref)\](?:\[\])?/,
    reflinkSearch: 'reflink|nolink(?!\\()',
    emStrong: {
        lDelim: /^(?:\*+(?:((?!\*)[punct])|[^\s*]))|^_+(?:((?!_)[punct])|([^\s_]))/,
        //         (1) and (2) can only be a Right Delimiter. (3) and (4) can only be Left.  (5) and (6) can be either Left or Right.
        //         | Skip orphan inside strong      | Consume to delim | (1) #***              | (2) a***#, a***                    | (3) #***a, ***a                  | (4) ***#                 | (5) #***#                         | (6) a***a
        rDelimAst: /^[^_*]*?__[^_*]*?\*[^_*]*?(?=__)|[^*]+(?=[^*])|(?!\*)[punct](\*+)(?=[\s]|$)|[^punct\s](\*+)(?!\*)(?=[punct\s]|$)|(?!\*)[punct\s](\*+)(?=[^punct\s])|[\s](\*+)(?!\*)(?=[punct])|(?!\*)[punct](\*+)(?!\*)(?=[punct])|[^punct\s](\*+)(?=[^punct\s])/,
        rDelimUnd: /^[^_*]*?\*\*[^_*]*?_[^_*]*?(?=\*\*)|[^_]+(?=[^_])|(?!_)[punct](_+)(?=[\s]|$)|[^punct\s](_+)(?!_)(?=[punct\s]|$)|(?!_)[punct\s](_+)(?=[^punct\s])|[\s](_+)(?!_)(?=[punct])|(?!_)[punct](_+)(?!_)(?=[punct])/ // ^- Not allowed for _
    },
    code: /^(`+)([^`]|[^`][\s\S]*?[^`])\1(?!`)/,
    br: /^( {2,}|\\)\n(?!\s*$)/,
    del: noopTest,
    text: /^(`+|[^`])(?:(?= {2,}\n)|[\s\S]*?(?:(?=[\\<!\[`*_]|\b_|$)|[^ ](?= {2,}\n)))/,
    punctuation: /^((?![*_])[\spunctuation])/
};
// list of unicode punctuation marks, plus any missing characters from CommonMark spec
inline._punctuation = '\\p{P}$+<=>`^|~';
inline.punctuation = edit(inline.punctuation, 'u').replace(/punctuation/g, inline._punctuation).getRegex();
// sequences em should skip over [title](link), `code`, <html>
inline.blockSkip = /\[[^[\]]*?\]\([^\(\)]*?\)|`[^`]*?`|<[^<>]*?>/g;
inline.anyPunctuation = /\\[punct]/g;
inline._escapes = /\\([punct])/g;
inline._comment = edit(block._comment).replace('(?:-->|$)', '-->').getRegex();
inline.emStrong.lDelim = edit(inline.emStrong.lDelim, 'u')
    .replace(/punct/g, inline._punctuation)
    .getRegex();
inline.emStrong.rDelimAst = edit(inline.emStrong.rDelimAst, 'gu')
    .replace(/punct/g, inline._punctuation)
    .getRegex();
inline.emStrong.rDelimUnd = edit(inline.emStrong.rDelimUnd, 'gu')
    .replace(/punct/g, inline._punctuation)
    .getRegex();
inline.anyPunctuation = edit(inline.anyPunctuation, 'gu')
    .replace(/punct/g, inline._punctuation)
    .getRegex();
inline._escapes = edit(inline._escapes, 'gu')
    .replace(/punct/g, inline._punctuation)
    .getRegex();
inline._scheme = /[a-zA-Z][a-zA-Z0-9+.-]{1,31}/;
inline._email = /[a-zA-Z0-9.!#$%&'*+/=?^_`{|}~-]+(@)[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])?)+(?![-_])/;
inline.autolink = edit(inline.autolink)
    .replace('scheme', inline._scheme)
    .replace('email', inline._email)
    .getRegex();
inline._attribute = /\s+[a-zA-Z:_][\w.:-]*(?:\s*=\s*"[^"]*"|\s*=\s*'[^']*'|\s*=\s*[^\s"'=<>`]+)?/;
inline.tag = edit(inline.tag)
    .replace('comment', inline._comment)
    .replace('attribute', inline._attribute)
    .getRegex();
inline._label = /(?:\[(?:\\.|[^\[\]\\])*\]|\\.|`[^`]*`|[^\[\]\\`])*?/;
inline._href = /<(?:\\.|[^\n<>\\])+>|[^\s\x00-\x1f]*/;
inline._title = /"(?:\\"?|[^"\\])*"|'(?:\\'?|[^'\\])*'|\((?:\\\)?|[^)\\])*\)/;
inline.link = edit(inline.link)
    .replace('label', inline._label)
    .replace('href', inline._href)
    .replace('title', inline._title)
    .getRegex();
inline.reflink = edit(inline.reflink)
    .replace('label', inline._label)
    .replace('ref', block._label)
    .getRegex();
inline.nolink = edit(inline.nolink)
    .replace('ref', block._label)
    .getRegex();
inline.reflinkSearch = edit(inline.reflinkSearch, 'g')
    .replace('reflink', inline.reflink)
    .replace('nolink', inline.nolink)
    .getRegex();
/**
 * Normal Inline Grammar
 */
inline.normal = { ...inline };
/**
 * Pedantic Inline Grammar
 */
inline.pedantic = {
    ...inline.normal,
    strong: {
        start: /^__|\*\*/,
        middle: /^__(?=\S)([\s\S]*?\S)__(?!_)|^\*\*(?=\S)([\s\S]*?\S)\*\*(?!\*)/,
        endAst: /\*\*(?!\*)/g,
        endUnd: /__(?!_)/g
    },
    em: {
        start: /^_|\*/,
        middle: /^()\*(?=\S)([\s\S]*?\S)\*(?!\*)|^_(?=\S)([\s\S]*?\S)_(?!_)/,
        endAst: /\*(?!\*)/g,
        endUnd: /_(?!_)/g
    },
    link: edit(/^!?\[(label)\]\((.*?)\)/)
        .replace('label', inline._label)
        .getRegex(),
    reflink: edit(/^!?\[(label)\]\s*\[([^\]]*)\]/)
        .replace('label', inline._label)
        .getRegex()
};
/**
 * GFM Inline Grammar
 */
inline.gfm = {
    ...inline.normal,
    escape: edit(inline.escape).replace('])', '~|])').getRegex(),
    _extended_email: /[A-Za-z0-9._+-]+(@)[a-zA-Z0-9-_]+(?:\.[a-zA-Z0-9-_]*[a-zA-Z0-9])+(?![-_])/,
    url: /^((?:ftp|https?):\/\/|www\.)(?:[a-zA-Z0-9\-]+\.?)+[^\s<]*|^email/,
    _backpedal: /(?:[^?!.,:;*_'"~()&]+|\([^)]*\)|&(?![a-zA-Z0-9]+;$)|[?!.,:;*_'"~)]+(?!$))+/,
    del: /^(~~?)(?=[^\s~])([\s\S]*?[^\s~])\1(?=[^~]|$)/,
    text: /^([`~]+|[^`~])(?:(?= {2,}\n)|(?=[a-zA-Z0-9.!#$%&'*+\/=?_`{\|}~-]+@)|[\s\S]*?(?:(?=[\\<!\[`*~_]|\b_|https?:\/\/|ftp:\/\/|www\.|$)|[^ ](?= {2,}\n)|[^a-zA-Z0-9.!#$%&'*+\/=?_`{\|}~-](?=[a-zA-Z0-9.!#$%&'*+\/=?_`{\|}~-]+@)))/
};
inline.gfm.url = edit(inline.gfm.url, 'i')
    .replace('email', inline.gfm._extended_email)
    .getRegex();
/**
 * GFM + Line Breaks Inline Grammar
 */
inline.breaks = {
    ...inline.gfm,
    br: edit(inline.br).replace('{2,}', '*').getRegex(),
    text: edit(inline.gfm.text)
        .replace('\\b_', '\\b_| {2,}\\n')
        .replace(/\{2,\}/g, '*')
        .getRegex()
};

/**
 * smartypants text replacement
 */
function smartypants(text) {
    return text
        // em-dashes
        .replace(/---/g, '\u2014')
        // en-dashes
        .replace(/--/g, '\u2013')
        // opening singles
        .replace(/(^|[-\u2014/(\[{"\s])'/g, '$1\u2018')
        // closing singles & apostrophes
        .replace(/'/g, '\u2019')
        // opening doubles
        .replace(/(^|[-\u2014/(\[{\u2018\s])"/g, '$1\u201c')
        // closing doubles
        .replace(/"/g, '\u201d')
        // ellipses
        .replace(/\.{3}/g, '\u2026');
}
/**
 * mangle email addresses
 */
function mangle(text) {
    let out = '';
    for (let i = 0; i < text.length; i++) {
        const ch = Math.random() > 0.5
            ? 'x' + text.charCodeAt(i).toString(16)
            : text.charCodeAt(i).toString();
        out += '&#' + ch + ';';
    }
    return out;
}
/**
 * Block Lexer
 */
class _Lexer {
    tokens;
    options;
    state;
    tokenizer;
    inlineQueue;
    constructor(options) {
        // TokenList cannot be created in one go
        // @ts-expect-error
        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 = {
            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(/\r\n|\r/g, '\n');
        this.blockTokens(src, this.tokens);
        let next;
        while (next = this.inlineQueue.shift()) {
            this.inlineTokens(next.src, next.tokens);
        }
        return this.tokens;
    }
    blockTokens(src, tokens = []) {
        if (this.options.pedantic) {
            src = src.replace(/\t/g, '    ').replace(/^ +$/gm, '');
        }
        else {
            src = src.replace(/^( *)(\t+)/gm, (_, leading, tabs) => {
                return leading + '    '.repeat(tabs.length);
            });
        }
        let token;
        let lastToken;
        let cutSrc;
        let lastParagraphClipped;
        while (src) {
            if (this.options.extensions
                && this.options.extensions.block
                && 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);
                if (token.raw.length === 1 && tokens.length > 0) {
                    // 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 unecessary paragraph tags
                    tokens[tokens.length - 1].raw += '\n';
                }
                else {
                    tokens.push(token);
                }
                continue;
            }
            // code
            if (token = this.tokenizer.code(src)) {
                src = src.substring(token.raw.length);
                lastToken = tokens[tokens.length - 1];
                // An indented code block cannot interrupt a paragraph.
                if (lastToken && (lastToken.type === 'paragraph' || lastToken.type === 'text')) {
                    lastToken.raw += '\n' + token.raw;
                    lastToken.text += '\n' + token.text;
                    this.inlineQueue[this.inlineQueue.length - 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);
                lastToken = tokens[tokens.length - 1];
                if (lastToken && (lastToken.type === 'paragraph' || lastToken.type === 'text')) {
                    lastToken.raw += '\n' + token.raw;
                    lastToken.text += '\n' + token.raw;
                    this.inlineQueue[this.inlineQueue.length - 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
            cutSrc = src;
            if (this.options.extensions && 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))) {
                lastToken = tokens[tokens.length - 1];
                if (lastParagraphClipped && lastToken.type === 'paragraph') {
                    lastToken.raw += '\n' + token.raw;
                    lastToken.text += '\n' + token.text;
                    this.inlineQueue.pop();
                    this.inlineQueue[this.inlineQueue.length - 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);
                lastToken = tokens[tokens.length - 1];
                if (lastToken && lastToken.type === 'text') {
                    lastToken.raw += '\n' + token.raw;
                    lastToken.text += '\n' + token.text;
                    this.inlineQueue.pop();
                    this.inlineQueue[this.inlineQueue.length - 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 = []) {
        let token, lastToken, cutSrc;
        // String with links masked to avoid interference with em and strong
        let maskedSrc = src;
        let match;
        let keepPrevChar, prevChar;
        // 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);
        }
        while (src) {
            if (!keepPrevChar) {
                prevChar = '';
            }
            keepPrevChar = false;
            // extensions
            if (this.options.extensions
                && this.options.extensions.inline
                && 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);
                lastToken = tokens[tokens.length - 1];
                if (lastToken && token.type === 'text' && lastToken.type === 'text') {
                    lastToken.raw += token.raw;
                    lastToken.text += token.text;
                }
                else {
                    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);
                lastToken = tokens[tokens.length - 1];
                if (lastToken && 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, mangle)) {
                src = src.substring(token.raw.length);
                tokens.push(token);
                continue;
            }
            // url (gfm)
            if (!this.state.inLink && (token = this.tokenizer.url(src, mangle))) {
                src = src.substring(token.raw.length);
                tokens.push(token);
                continue;
            }
            // text
            // prevent inlineText consuming extensions by clipping 'src' to extension start
            cutSrc = src;
            if (this.options.extensions && 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, smartypants)) {
                src = src.substring(token.raw.length);
                if (token.raw.slice(-1) !== '_') { // Track prevChar before string of ____ started
                    prevChar = token.raw.slice(-1);
                }
                keepPrevChar = true;
                lastToken = tokens[tokens.length - 1];
                if (lastToken && 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;
    constructor(options) {
        this.options = options || _defaults;
    }
    code(code, infostring, escaped) {
        const lang = (infostring || '').match(/^\S*/)?.[0];
        if (this.options.highlight) {
            const out = this.options.highlight(code, lang);
            if (out != null && out !== code) {
                escaped = true;
                code = out;
            }
        }
        code = code.replace(/\n$/, '') + '\n';
        if (!lang) {
            return '<pre><code>'
                + (escaped ? code : escape(code, true))
                + '</code></pre>\n';
        }
        return '<pre><code class="'
            + this.options.langPrefix
            + escape(lang)
            + '">'
            + (escaped ? code : escape(code, true))
            + '</code></pre>\n';
    }
    blockquote(quote) {
        return `<blockquote>\n${quote}</blockquote>\n`;
    }
    html(html, block) {
        return html;
    }
    heading(text, level, raw, slugger) {
        if (this.options.headerIds) {
            const id = this.options.headerPrefix + slugger.slug(raw);
            return `<h${level} id="${id}">${text}</h${level}>\n`;
        }
        // ignore IDs
        return `<h${level}>${text}</h${level}>\n`;
    }
    hr() {
        return this.options.xhtml ? '<hr/>\n' : '<hr>\n';
    }
    list(body, ordered, start) {
        const type = ordered ? 'ol' : 'ul';
        const startatt = (ordered && start !== 1) ? (' start="' + start + '"') : '';
        return '<' + type + startatt + '>\n' + body + '</' + type + '>\n';
    }
    listitem(text, task, checked) {
        return `<li>${text}</li>\n`;
    }
    checkbox(checked) {
        return '<input '
            + (checked ? 'checked="" ' : '')
            + 'disabled="" type="checkbox"'
            + (this.options.xhtml ? ' /' : '')
            + '> ';
    }
    paragraph(text) {
        return `<p>${text}</p>\n`;
    }
    table(header, body) {
        if (body)
            body = `<tbody>${body}</tbody>`;
        return '<table>\n'
            + '<thead>\n'
            + header
            + '</thead>\n'
            + body
            + '</table>\n';
    }
    tablerow(content) {
        return `<tr>\n${content}</tr>\n`;
    }
    tablecell(content, flags) {
        const type = flags.header ? 'th' : 'td';
        const tag = flags.align
            ? `<${type} align="${flags.align}">`
            : `<${type}>`;
        return tag + content + `</${type}>\n`;
    }
    /**
     * span level renderer
     */
    strong(text) {
        return `<strong>${text}</strong>`;
    }
    em(text) {
        return `<em>${text}</em>`;
    }
    codespan(text) {
        return `<code>${text}</code>`;
    }
    br() {
        return this.options.xhtml ? '<br/>' : '<br>';
    }
    del(text) {
        return `<del>${text}</del>`;
    }
    link(href, title, text) {
        const cleanHref = cleanUrl(this.options.sanitize, this.options.baseUrl, href);
        if (cleanHref === null) {
            return text;
        }
        href = cleanHref;
        let out = '<a href="' + href + '"';
        if (title) {
            out += ' title="' + title + '"';
        }
        out += '>' + text + '</a>';
        return out;
    }
    image(href, title, text) {
        const cleanHref = cleanUrl(this.options.sanitize, this.options.baseUrl, href);
        if (cleanHref === null) {
            return text;
        }
        href = cleanHref;
        let out = `<img src="${href}" alt="${text}"`;
        if (title) {
            out += ` title="${title}"`;
        }
        out += this.options.xhtml ? '/>' : '>';
        return out;
    }
    text(text) {
        return text;
    }
}

/**
 * TextRenderer
 * returns only the textual part of the token
 */
class _TextRenderer {
    // no need for block level renderers
    strong(text) {
        return text;
    }
    em(text) {
        return text;
    }
    codespan(text) {
        return text;
    }
    del(text) {
        return text;
    }
    html(text) {
        return text;
    }
    text(text) {
        return text;
    }
    link(href, title, text) {
        return '' + text;
    }
    image(href, title, text) {
        return '' + text;
    }
    br() {
        return '';
    }
}

/**
 * Slugger generates header id
 */
class _Slugger {
    seen;
    constructor() {
        this.seen = {};
    }
    serialize(value) {
        return value
            .toLowerCase()
            .trim()
            // remove html tags
            .replace(/<[!\/a-z].*?>/ig, '')
            // remove unwanted chars
            .replace(/[\u2000-\u206F\u2E00-\u2E7F\\'!"#$%&()*+,./:;<=>?@[\]^`{|}~]/g, '')
            .replace(/\s/g, '-');
    }
    /**
     * Finds the next safe (unique) slug to use
     */
    getNextSafeSlug(originalSlug, isDryRun) {
        let slug = originalSlug;
        let occurenceAccumulator = 0;
        if (this.seen.hasOwnProperty(slug)) {
            occurenceAccumulator = this.seen[originalSlug];
            do {
                occurenceAccumulator++;
                slug = originalSlug + '-' + occurenceAccumulator;
            } while (this.seen.hasOwnProperty(slug));
        }
        if (!isDryRun) {
            this.seen[originalSlug] = occurenceAccumulator;
            this.seen[slug] = 0;
        }
        return slug;
    }
    /**
     * Convert string to unique id
     */
    slug(value, options = {}) {
        const slug = this.serialize(value);
        return this.getNextSafeSlug(slug, options.dryrun);
    }
}

/**
 * Parsing & Compiling
 */
class _Parser {
    options;
    renderer;
    textRenderer;
    slugger;
    constructor(options) {
        this.options = options || _defaults;
        this.options.renderer = this.options.renderer || new _Renderer();
        this.renderer = this.options.renderer;
        this.renderer.options = this.options;
        this.textRenderer = new _TextRenderer();
        this.slugger = new _Slugger();
    }
    /**
     * Static Parse Method
     */
    static parse(tokens, options) {
        const parser = new _Parser(options);
        return parser.parse(tokens);
    }
    /**
     * Static Parse Inline Method
     */
    static parseInline(tokens, options) {
        const parser = new _Parser(options);
        return parser.parseInline(tokens);
    }
    /**
     * Parse Loop
     */
    parse(tokens, top = true) {
        let out = '';
        for (let i = 0; i < tokens.length; i++) {
            const token = tokens[i];
            // Run any renderer extensions
            if (this.options.extensions && this.options.extensions.renderers && this.options.extensions.renderers[token.type]) {
                const genericToken = token;
                const ret = this.options.extensions.renderers[genericToken.type].call({ parser: this }, genericToken);
                if (ret !== false || !['space', 'hr', 'heading', 'code', 'table', 'blockquote', 'list', 'html', 'paragraph', 'text'].includes(genericToken.type)) {
                    out += ret || '';
                    continue;
                }
            }
            switch (token.type) {
                case 'space': {
                    continue;
                }
                case 'hr': {
                    out += this.renderer.hr();
                    continue;
                }
                case 'heading': {
                    const headingToken = token;
                    out += this.renderer.heading(this.parseInline(headingToken.tokens), headingToken.depth, unescape(this.parseInline(headingToken.tokens, this.textRenderer)), this.slugger);
                    continue;
                }
                case 'code': {
                    const codeToken = token;
                    out += this.renderer.code(codeToken.text, codeToken.lang, !!codeToken.escaped);
                    continue;
                }
                case 'table': {
                    const tableToken = token;
                    let header = '';
                    // header
                    let cell = '';
                    for (let j = 0; j < tableToken.header.length; j++) {
                        cell += this.renderer.tablecell(this.parseInline(tableToken.header[j].tokens), { header: true, align: tableToken.align[j] });
                    }
                    header += this.renderer.tablerow(cell);
                    let body = '';
                    for (let j = 0; j < tableToken.rows.length; j++) {
                        const row = tableToken.rows[j];
                        cell = '';
                        for (let k = 0; k < row.length; k++) {
                            cell += this.renderer.tablecell(this.parseInline(row[k].tokens), { header: false, align: tableToken.align[k] });
                        }
                        body += this.renderer.tablerow(cell);
                    }
                    out += this.renderer.table(header, body);
                    continue;
                }
                case 'blockquote': {
                    const blockquoteToken = token;
                    const body = this.parse(blockquoteToken.tokens);
                    out += this.renderer.blockquote(body);
                    continue;
                }
                case 'list': {
                    const listToken = token;
                    const ordered = listToken.ordered;
                    const start = listToken.start;
                    const loose = listToken.loose;
                    let body = '';
                    for (let j = 0; j < listToken.items.length; j++) {
                        const item = listToken.items[j];
                        const checked = item.checked;
                        const task = item.task;
                        let itemBody = '';
                        if (item.task) {
                            const checkbox = this.renderer.checkbox(!!checked);
                            if (loose) {
                                if (item.tokens.length > 0 && 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 + ' ' + item.tokens[0].tokens[0].text;
                                    }
                                }
                                else {
                                    item.tokens.unshift({
                                        type: 'text',
                                        text: checkbox
                                    });
                                }
                            }
                            else {
                                itemBody += checkbox;
                            }
                        }
                        itemBody += this.parse(item.tokens, loose);
                        body += this.renderer.listitem(itemBody, task, !!checked);
                    }
                    out += this.renderer.list(body, ordered, start);
                    continue;
                }
                case 'html': {
                    const htmlToken = token;
                    out += this.renderer.html(htmlToken.text, htmlToken.block);
                    continue;
                }
                case 'paragraph': {
                    const paragraphToken = token;
                    out += this.renderer.paragraph(this.parseInline(paragraphToken.tokens));
                    continue;
                }
                case 'text': {
                    let textToken = token;
                    let body = textToken.tokens ? this.parseInline(textToken.tokens) : textToken.text;
                    while (i + 1 < tokens.length && tokens[i + 1].type === 'text') {
                        textToken = tokens[++i];
                        body += '\n' + (textToken.tokens ? this.parseInline(textToken.tokens) : textToken.text);
                    }
                    out += top ? this.renderer.paragraph(body) : body;
                    continue;
                }
                default: {
                    const errMsg = 'Token with "' + token.type + '" type was not found.';
                    if (this.options.silent) {
                        console.error(errMsg);
                        return '';
                    }
                    else {
                        throw new Error(errMsg);
                    }
                }
            }
        }
        return out;
    }
    /**
     * Parse Inline Tokens
     */
    parseInline(tokens, renderer) {
        renderer = renderer || this.renderer;
        let out = '';
        for (let i = 0; i < tokens.length; i++) {
            const token = tokens[i];
            // Run any renderer extensions
            if (this.options.extensions && this.options.extensions.renderers && this.options.extensions.renderers[token.type]) {
                const ret = this.options.extensions.renderers[token.type].call({ parser: this }, token);
                if (ret !== false || !['escape', 'html', 'link', 'image', 'strong', 'em', 'codespan', 'br', 'del', 'text'].includes(token.type)) {
                    out += ret || '';
                    continue;
                }
            }
            switch (token.type) {
                case 'escape': {
                    const escapeToken = token;
                    out += renderer.text(escapeToken.text);
                    break;
                }
                case 'html': {
                    const tagToken = token;
                    out += renderer.html(tagToken.text);
                    break;
                }
                case 'link': {
                    const linkToken = token;
                    out += renderer.link(linkToken.href, linkToken.title, this.parseInline(linkToken.tokens, renderer));
                    break;
                }
                case 'image': {
                    const imageToken = token;
                    out += renderer.image(imageToken.href, imageToken.title, imageToken.text);
                    break;
                }
                case 'strong': {
                    const strongToken = token;
                    out += renderer.strong(this.parseInline(strongToken.tokens, renderer));
                    break;
                }
                case 'em': {
                    const emToken = token;
                    out += renderer.em(this.parseInline(emToken.tokens, renderer));
                    break;
                }
                case 'codespan': {
                    const codespanToken = token;
                    out += renderer.codespan(codespanToken.text);
                    break;
                }
                case 'br': {
                    out += renderer.br();
                    break;
                }
                case 'del': {
                    const delToken = token;
                    out += renderer.del(this.parseInline(delToken.tokens, renderer));
                    break;
                }
                case 'text': {
                    const textToken = token;
                    out += renderer.text(textToken.text);
                    break;
                }
                default: {
                    const errMsg = 'Token with "' + token.type + '" type was not found.';
                    if (this.options.silent) {
                        console.error(errMsg);
                        return '';
                    }
                    else {
                        throw new Error(errMsg);
                    }
                }
            }
        }
        return out;
    }
}

class _Hooks {
    options;
    constructor(options) {
        this.options = options || _defaults;
    }
    static passThroughHooks = new Set([
        'preprocess',
        'postprocess'
    ]);
    /**
     * Process markdown before marked
     */
    preprocess(markdown) {
        return markdown;
    }
    /**
     * Process HTML after marked is finished
     */
    postprocess(html) {
        return html;
    }
}

class Marked {
    defaults = _getDefaults();
    options = this.setOptions;
    parse = this.#parseMarkdown(_Lexer.lex, _Parser.parse);
    parseInline = this.#parseMarkdown(_Lexer.lexInline, _Parser.parseInline);
    Parser = _Parser;
    parser = _Parser.parse;
    Renderer = _Renderer;
    TextRenderer = _TextRenderer;
    Lexer = _Lexer;
    lexer = _Lexer.lex;
    Tokenizer = _Tokenizer;
    Slugger = _Slugger;
    Hooks = _Hooks;
    constructor(...args) {
        this.use(...args);
    }
    /**
     * Run callback for every token
     */
    walkTokens(tokens, callback) {
        let values = [];
        for (const token of tokens) {
            values = values.concat(callback.call(this, token));
            switch (token.type) {
                case 'table': {
                    const tableToken = token;
                    for (const cell of tableToken.header) {
                        values = values.concat(this.walkTokens(cell.tokens, callback));
                    }
                    for (const row of tableToken.rows) {
                        for (const cell of row) {
                            values = values.concat(this.walkTokens(cell.tokens, callback));
                        }
                    }
                    break;
                }
                case 'list': {
                    const listToken = token;
                    values = values.concat(this.walkTokens(listToken.items, callback));
                    break;
                }
                default: {
                    const genericToken = token;
                    if (this.defaults.extensions?.childTokens?.[genericToken.type]) {
                        this.defaults.extensions.childTokens[genericToken.type].forEach((childTokens) => {
                            values = values.concat(this.walkTokens(genericToken[childTokens], callback));
                        });
                    }
                    else if (genericToken.tokens) {
                        values = values.concat(this.walkTokens(genericToken.tokens, callback));
                    }
                }
            }
        }
        return values;
    }
    use(...args) {
        const extensions = this.defaults.extensions || { renderers: {}, childTokens: {} };
        args.forEach((pack) => {
            // copy options to new object
            const opts = { ...pack };
            // set async to true if it was set to true before
            opts.async = this.defaults.async || opts.async || false;
            // ==-- Parse "addon" extensions --== //
            if (pack.extensions) {
                pack.extensions.forEach((ext) => {
                    if (!ext.name) {
                        throw new Error('extension name required');
                    }
                    if ('renderer' in ext) { // Renderer extensions
                        const prevRenderer = extensions.renderers[ext.name];
                        if (prevRenderer) {
                            // Replace extension with func to run new extension but fall back if false
                            extensions.renderers[ext.name] = function (...args) {
                                let ret = ext.renderer.apply(this, args);
                                if (ret === false) {
                                    ret = prevRenderer.apply(this, args);
                                }
                                return ret;
                            };
                        }
                        else {
                            extensions.renderers[ext.name] = ext.renderer;
                        }
                    }
                    if ('tokenizer' in ext) { // Tokenizer Extensions
                        if (!ext.level || (ext.level !== 'block' && ext.level !== 'inline')) {
                            throw new Error("extension level must be 'block' or 'inline'");
                        }
                        const extLevel = extensions[ext.level];
                        if (extLevel) {
                            extLevel.unshift(ext.tokenizer);
                        }
                        else {
                            extensions[ext.level] = [ext.tokenizer];
                        }
                        if (ext.start) { // Function to check for start of token
                            if (ext.level === 'block') {
                                if (extensions.startBlock) {
                                    extensions.startBlock.push(ext.start);
                                }
                                else {
                                    extensions.startBlock = [ext.start];
                                }
                            }
                            else if (ext.level === 'inline') {
                                if (extensions.startInline) {
                                    extensions.startInline.push(ext.start);
                                }
                                else {
                                    extensions.startInline = [ext.start];
                                }
                            }
                        }
                    }
                    if ('childTokens' in ext && ext.childTokens) { // Child tokens to be visited by walkTokens
                        extensions.childTokens[ext.name] = ext.childTokens;
                    }
                });
                opts.extensions = extensions;
            }
            // ==-- Parse "overwrite" extensions --== //
            if (pack.renderer) {
                const renderer = this.defaults.renderer || new _Renderer(this.defaults);
                for (const prop in pack.renderer) {
                    const rendererFunc = pack.renderer[prop];
                    const rendererKey = prop;
                    const prevRenderer = renderer[rendererKey];
                    // Replace renderer with func to run extension, but fall back if false
                    renderer[rendererKey] = (...args) => {
                        let ret = rendererFunc.apply(renderer, args);
                        if (ret === false) {
                            ret = prevRenderer.apply(renderer, args);
                        }
                        return ret || '';
                    };
                }
                opts.renderer = renderer;
            }
            if (pack.tokenizer) {
                const tokenizer = this.defaults.tokenizer || new _Tokenizer(this.defaults);
                for (const prop in pack.tokenizer) {
                    const tokenizerFunc = pack.tokenizer[prop];
                    const tokenizerKey = prop;
                    const prevTokenizer = tokenizer[tokenizerKey];
                    // Replace tokenizer with func to run extension, but fall back if false
                    tokenizer[tokenizerKey] = (...args) => {
                        let ret = tokenizerFunc.apply(tokenizer, args);
                        if (ret === false) {
                            ret = prevTokenizer.apply(tokenizer, args);
                        }
                        return ret;
                    };
                }
                opts.tokenizer = tokenizer;
            }
            // ==-- Parse Hooks extensions --== //
            if (pack.hooks) {
                const hooks = this.defaults.hooks || new _Hooks();
                for (const prop in pack.hooks) {
                    const hooksFunc = pack.hooks[prop];
                    const hooksKey = prop;
                    const prevHook = hooks[hooksKey];
                    if (_Hooks.passThroughHooks.has(prop)) {
                        hooks[hooksKey] = (arg) => {
                            if (this.defaults.async) {
                                return Promise.resolve(hooksFunc.call(hooks, arg)).then(ret => {
                                    return prevHook.call(hooks, ret);
                                });
                            }
                            const ret = hooksFunc.call(hooks, arg);
                            return prevHook.call(hooks, ret);
                        };
                    }
                    else {
                        hooks[hooksKey] = (...args) => {
                            let ret = hooksFunc.apply(hooks, args);
                            if (ret === false) {
                                ret = prevHook.apply(hooks, args);
                            }
                            return ret;
                        };
                    }
                }
                opts.hooks = hooks;
            }
            // ==-- Parse WalkTokens extensions --== //
            if (pack.walkTokens) {
                const walkTokens = this.defaults.walkTokens;
                const packWalktokens = pack.walkTokens;
                opts.walkTokens = function (token) {
                    let values = [];
                    values.push(packWalktokens.call(this, token));
                    if (walkTokens) {
                        values = values.concat(walkTokens.call(this, token));
                    }
                    return values;
                };
            }
            this.defaults = { ...this.defaults, ...opts };
        });
        return this;
    }
    setOptions(opt) {
        this.defaults = { ...this.defaults, ...opt };
        return this;
    }
    #parseMarkdown(lexer, parser) {
        return (src, optOrCallback, callback) => {
            if (typeof optOrCallback === 'function') {
                callback = optOrCallback;
                optOrCallback = null;
            }
            const origOpt = { ...optOrCallback };
            const opt = { ...this.defaults, ...origOpt };
            const throwError = this.#onError(!!opt.silent, !!opt.async, callback);
            // throw error in case of non string input
            if (typeof src === 'undefined' || src === null) {
                return throwError(new Error('marked(): input parameter is undefined or null'));
            }
            if (typeof src !== 'string') {
                return throwError(new Error('marked(): input parameter is of type '
                    + Object.prototype.toString.call(src) + ', string expected'));
            }
            checkDeprecations(opt, callback);
            if (opt.hooks) {
                opt.hooks.options = opt;
            }
            if (callback) {
                const resultCallback = callback;
                const highlight = opt.highlight;
                let tokens;
                try {
                    if (opt.hooks) {
                        src = opt.hooks.preprocess(src);
                    }
                    tokens = lexer(src, opt);
                }
                catch (e) {
                    return throwError(e);
                }
                const done = (err) => {
                    let out;
                    if (!err) {
                        try {
                            if (opt.walkTokens) {
                                this.walkTokens(tokens, opt.walkTokens);
                            }
                            out = parser(tokens, opt);
                            if (opt.hooks) {
                                out = opt.hooks.postprocess(out);
                            }
                        }
                        catch (e) {
                            err = e;
                        }
                    }
                    opt.highlight = highlight;
                    return err
                        ? throwError(err)
                        : resultCallback(null, out);
                };
                if (!highlight || highlight.length < 3) {
                    return done();
                }
                delete opt.highlight;
                if (!tokens.length)
                    return done();
                let pending = 0;
                this.walkTokens(tokens, (token) => {
                    if (token.type === 'code') {
                        pending++;
                        setTimeout(() => {
                            highlight(token.text, token.lang, (err, code) => {
                                if (err) {
                                    return done(err);
                                }
                                if (code != null && code !== token.text) {
                                    token.text = code;
                                    token.escaped = true;
                                }
                                pending--;
                                if (pending === 0) {
                                    done();
                                }
                            });
                        }, 0);
                    }
                });
                if (pending === 0) {
                    done();
                }
                return;
            }
            if (opt.async) {
                return Promise.resolve(opt.hooks ? opt.hooks.preprocess(src) : src)
                    .then(src => lexer(src, opt))
                    .then(tokens => opt.walkTokens ? Promise.all(this.walkTokens(tokens, opt.walkTokens)).then(() => tokens) : tokens)
                    .then(tokens => parser(tokens, opt))
                    .then(html => opt.hooks ? opt.hooks.postprocess(html) : html)
                    .catch(throwError);
            }
            try {
                if (opt.hooks) {
                    src = opt.hooks.preprocess(src);
                }
                const tokens = lexer(src, opt);
                if (opt.walkTokens) {
                    this.walkTokens(tokens, opt.walkTokens);
                }
                let html = parser(tokens, opt);
                if (opt.hooks) {
                    html = opt.hooks.postprocess(html);
                }
                return html;
            }
            catch (e) {
                return throwError(e);
            }
        };
    }
    #onError(silent, async, callback) {
        return (e) => {
            e.message += '\nPlease report this to https://github.com/markedjs/marked.';
            if (silent) {
                const msg = '<p>An error occurred:</p><pre>'
                    + escape(e.message + '', true)
                    + '</pre>';
                if (async) {
                    return Promise.resolve(msg);
                }
                if (callback) {
                    callback(null, msg);
                    return;
                }
                return msg;
            }
            if (async) {
                return Promise.reject(e);
            }
            if (callback) {
                callback(e);
                return;
            }
            throw e;
        };
    }
}

const markedInstance = new Marked();
function marked(src, opt, callback) {
    return markedInstance.parse(src, opt, callback);
}
/**
 * Sets the default options.
 *
 * @param options Hash of options
 */
marked.options =
    marked.setOptions = function (options) {
        markedInstance.setOptions(options);
        marked.defaults = markedInstance.defaults;
        changeDefaults(marked.defaults);
        return marked;
    };
/**
 * Gets the original marked default options.
 */
marked.getDefaults = _getDefaults;
marked.defaults = _defaults;
/**
 * Use Extension
 */
marked.use = function (...args) {
    markedInstance.use(...args);
    marked.defaults = markedInstance.defaults;
    changeDefaults(marked.defaults);
    return marked;
};
/**
 * Run callback for every token
 */
marked.walkTokens = function (tokens, callback) {
    return markedInstance.walkTokens(tokens, callback);
};
/**
 * Compiles markdown to HTML without enclosing `p` tag.
 *
 * @param src String of markdown source to be compiled
 * @param options Hash of options
 * @return String of compiled HTML
 */
marked.parseInline = markedInstance.parseInline;
/**
 * Expose
 */
marked.Parser = _Parser;
marked.parser = _Parser.parse;
marked.Renderer = _Renderer;
marked.TextRenderer = _TextRenderer;
marked.Lexer = _Lexer;
marked.lexer = _Lexer.lex;
marked.Tokenizer = _Tokenizer;
marked.Slugger = _Slugger;
marked.Hooks = _Hooks;
marked.parse = marked;
const options = marked.options;
const setOptions = marked.setOptions;
const use = marked.use;
const walkTokens = marked.walkTokens;
const parseInline = marked.parseInline;
const parse = marked;
const parser = _Parser.parse;
const lexer = _Lexer.lex;

export { _Hooks as Hooks, _Lexer as Lexer, Marked, _Parser as Parser, _Renderer as Renderer, _Slugger as Slugger, _TextRenderer as TextRenderer, _Tokenizer as Tokenizer, _defaults as defaults, _getDefaults as getDefaults, lexer, marked, options, parse, parseInline, parser, setOptions, use, walkTokens };
//# sourceMappingURL=marked.esm.js.map