datahub/apps/site/lib/markdown.mjs
2023-04-11 08:19:58 -03:00

100 lines
3.3 KiB
JavaScript

import matter from "gray-matter";
import mdxmermaid from "mdx-mermaid";
import { h } from "hastscript";
import remarkCallouts from "@flowershow/remark-callouts";
import remarkEmbed from "@flowershow/remark-embed";
import remarkGfm from "remark-gfm";
import remarkMath from "remark-math";
import remarkSmartypants from "remark-smartypants";
import remarkToc from "remark-toc";
import remarkWikiLink from "@flowershow/remark-wiki-link";
import rehypeAutolinkHeadings from "rehype-autolink-headings";
import rehypeKatex from "rehype-katex";
import rehypeSlug from "rehype-slug";
import rehypePrismPlus from "rehype-prism-plus";
import { serialize } from "next-mdx-remote/serialize";
/**
* Parse a markdown or MDX file to an MDX source form + front matter data
*
* @source: the contents of a markdown or mdx file
* @format: used to indicate to next-mdx-remote which format to use (md or mdx)
* @returns: { mdxSource: mdxSource, frontMatter: ...}
*/
const parse = async function (source, format, scope) {
const { content, data } = matter(source);
const mdxSource = await serialize(
{ value: content, path: format },
{
// Optionally pass remark/rehype plugins
mdxOptions: {
remarkPlugins: [
remarkEmbed,
remarkGfm,
[remarkSmartypants, { quotes: false, dashes: "oldschool" }],
remarkMath,
remarkCallouts,
remarkWikiLink,
[
remarkToc,
{
heading: "Table of contents",
tight: true,
},
],
[mdxmermaid, {}],
],
rehypePlugins: [
rehypeSlug,
[
rehypeAutolinkHeadings,
{
properties: { className: "heading-link" },
test(element) {
return (
["h2", "h3", "h4", "h5", "h6"].includes(element.tagName) &&
element.properties?.id !== "table-of-contents" &&
element.properties?.className !== "blockquote-heading"
);
},
content() {
return [
h(
"svg",
{
xmlns: "http:www.w3.org/2000/svg",
fill: "#ab2b65",
viewBox: "0 0 20 20",
className: "w-5 h-5",
},
[
h("path", {
fillRule: "evenodd",
clipRule: "evenodd",
d: "M9.493 2.853a.75.75 0 00-1.486-.205L7.545 6H4.198a.75.75 0 000 1.5h3.14l-.69 5H3.302a.75.75 0 000 1.5h3.14l-.435 3.148a.75.75 0 001.486.205L7.955 14h2.986l-.434 3.148a.75.75 0 001.486.205L12.456 14h3.346a.75.75 0 000-1.5h-3.14l.69-5h3.346a.75.75 0 000-1.5h-3.14l.435-3.147a.75.75 0 00-1.486-.205L12.045 6H9.059l.434-3.147zM8.852 7.5l-.69 5h2.986l.69-5H8.852z",
}),
]
),
];
},
},
],
[rehypeKatex, { output: "mathml" }],
[rehypePrismPlus, { ignoreMissing: true }],
],
format,
},
scope: { ...scope, ...data },
}
);
return {
mdxSource: mdxSource,
frontMatter: data,
};
};
export default parse;