generate-spec.js

const toc = require("markdown-toc");
const fs = require("fs");
/**
 * Returns a JSON representing the markdown document
 *
 * @param {string} path path to the markdown document
 * @returns {Object} Parsed json object for spec.md
 */

const parseToJSON = () => {
  path = "scripts/spec-input.md";

  const markdown = fs.readFileSync(path, "utf-8");

  /* parse the markdown document into JSON */
  const content = toc(markdown).json;

  let result = parseToNested(content);

  let chunks = markdown.split("\n#");

  chunks.forEach((chunk, index) => {
    /* skip the table element */
    if (index == 0) return;
    let line = chunk.split("\n")[0];

    result[line.replace(/#*/, "").trim()].chunk = chunk;
  });

  let data = JSON.stringify(result);
  fs.writeFileSync("./src/spec.json", data);
};

/**
 * Return markdown-toc objects with nested structure
 *
 * @param {Object} content Original markdown-toc objects
 * @returns {Object} Parsed objects with parents
 */

const parseToNested = content => {
  const result = {};

  const initialValue = {
    lvl: 1,
    parents: [],
  };

  content.reduce((acc, v) => {
    switch (v.lvl) {
      case 1:
        v.parents = [];
        break;
      case 2:
        if (acc.lvl < v.lvl) {
          v.parents = [acc.content];
        } else {
          v.parents = [acc.parents[0]];
        }
        break;
      case 3:
        if (acc.lvl == 1) {
          /* babelparser-babylon-v7 element */
          v.parents = [acc.content, acc.content];
        } else if (acc.lvl < v.lvl) {
          v.parents = [acc.parents[0], acc.content];
        } else {
          v.parents = [acc.parents[0], acc.parents[1]];
        }
        break;
      case 4:
        if (acc.lvl < v.lvl) {
          v.parents = [acc.parents[0], acc.parents[1], acc.content];
        } else {
          v.parents = acc.parents;
        }
        break;
    }
    result[v.content] = v;
    return v;
  }, initialValue);
  return result;
};
parseToJSON();