WebIndex/plugins/markdown-it.ts

import md, { type Options } from 'markdown-it'
// @ts-ignore
import mm from 'markdown-it-mathjax3'
const options: Options = {
    // Enable HTML tags in source
    html: true,

    // Use '/' to close single tags (<br />).
    // This is only for full CommonMark compatibility.
    xhtmlOut: true,

    // Convert '\n' in paragraphs into <br>
    breaks: true,

    // CSS language prefix for fenced blocks. Can be
    // useful for external highlighters.
    langPrefix: 'language-',

    // Autoconvert URL-like text to links
    linkify: true,

    // Enable some language-neutral replacement + quotes beautification
    // For the full list of replacements, see https://github.com/markdown-it/markdown-it/blob/master/lib/rules_core/replacements.mjs
    typographer: true,

    // Double + single quotes replacement pairs, when typographer enabled,
    // and smartquotes on. Could be either a String or an Array.
    //
    // For example, you can use '«»„“' for Russian, '„“‚‘' for German,
    // and ['«\xA0', '\xA0»', '‹\xA0', '\xA0›'] for French (including nbsp).
    quotes: '“”‘’',

    // Highlighter function. Should return escaped HTML,
    // or '' if the source string is not changed and should be escaped externally.
    // If result starts with <pre... internal wrapper is skipped.
    highlight: function (/*str, lang*/) { return ''; }
}

export default defineNuxtPlugin(() => {
    const render = md(options)
        .use(mm, {
        })
    return {
        provide: {
            mdRender: render
        }
    }
})