markdown-it/lib/configs/commonmark.js

// Commonmark default options

'use strict';


module.exports = {
  options: {
    html:         true,         // Enable HTML tags in source
    xhtmlOut:     true,         // Use '/' to close single tags (<br />)
    breaks:       false,        // Convert '\n' in paragraphs into <br>
    langPrefix:   'language-',  // CSS language prefix for fenced blocks
    linkify:      false,        // autoconvert URL-like texts to links

    // Enable some language-neutral replacement + quotes beautification
    //
    // (c) (C) → ©
    // (tm) (TM) → ™
    // (r) (R) → ®
    // +- → ±
    // (p) (P) → §
    // ... → …
    // ???????? → ???, !!!!! → !!!, `,,` → `,`
    // -- → —
    //
    typographer:  false,

    // Double + single quotes replacement pairs, when typographer enabled,
    // and smartquotes on. Set doubles to '«»' for Russian, '„“' for German.
    quotes: '“”‘’',

    // Highlighter function. Should return escaped HTML,
    // or '' if input not changed
    highlight: function (/*str, lang*/) { return ''; },

    maxNesting:   20            // Internal protection, recursion limit
  },

  components: {

    core: {},

    block: {
      rules: [
        'blockquote',
        'code',
        'fences',
        'heading',
        'hr',
        'htmlblock',
        'lheading',
        'list',
        'paragraph'
      ]
    },

    inline: {
      rules: [
        'autolink',
        'backticks',
        'emphasis',
        'entity',
        'escape',
        'htmltag',
        'links',
        'newline',
        'text'
      ]
    }
  }
};