mdzjs/src/parser/index.js

markdown preprocessor for zikojs

import { unified } from 'unified';
import { reporter } from 'vfile-reporter'
import remarkParse from 'remark-parse';
import remarkMdx from 'remark-mdx'
import remarkFrontmatter from 'remark-frontmatter';
import remarkToc from 'remark-toc'
import remarkGFM from 'remark-gfm';
import { VFile } from 'vfile';
import {matter} from 'vfile-matter';


export async function parseMD(markdown, ...plugins) {
  const file = new VFile(markdown);
  matter(file, { strip: true });

  const preprocessor = unified()
    .use(remarkParse)
    .use(remarkGFM)
    .use(remarkFrontmatter, ['yaml'])
    .use(remarkToc)
    .use(remarkMdx)

  plugins.forEach(plugin => {
    if (Array.isArray(plugin)) preprocessor.use(...plugin);
    else preprocessor.use(plugin);
  })
  const ast = preprocessor.parse(String(file));
  if(file.messages.length > 0 ) console.error(reporter(file))

  return {
    file,
    frontmatter: file.data.matter,
    ast,
  };
}

// const inp = `
// ---
// a : 1
// b : 2
// MDZ.Props : 
//  - a : 1
//  - c : 2
// ---

// // // const {a, b} 
// // // = MDZ.Props

// // ## Contents

// // ## History

// // ### Discovery
// // `.trimStart()
// const out = await parseMD(inp)
// console.log(out.ast)

// // console.log(JSON.stringify(out.ast.children, null, 2))