markdown + gray-matter file transformation

transform.js

var markdownit = require("markdown-it")("commonmark");
var yamlParser = require("gray-matter");
var fs = require("fs");
var path = require("path");

var content = fs.readFileSync(path.join(__dirname, "md/index.md"));
var yaml = yamlParser(content.toString());
console.log(markdownit.render(yaml.content));