Custom marked renderer for including other markdown files in md-to-pdf.

config.js

const { readFileSync } = require('fs');
const { Renderer } = require('marked');
const getMarked = require('md-to-pdf/lib/get-marked-with-highlighter');

const renderer = new Renderer();

const originalLinkRenderer = renderer.link.bind(renderer);

renderer.link = (href, title, text) => {
	if (text !== 'include') {
		return originalLinkRenderer(href, title, text);
	}

	// 1. read file
	const md = readFileSync(href, 'utf-8');

	// 2. get marked instance that's equivalent to the one from md-to-pdf
	const marked = getMarked(marked_options);

	// 3. convert to html string
	return marked(md);
};

const marked_options = { renderer };

module.exports = { marked_options };

include.md

Yay, I'm included.

include

index.js

const mdToPdf = require('md-to-pdf');
const config = require('./config');

async function main() {
	await mdToPdf('test.md', config);
}

main().catch(error => console.error(error) || process.exit(1));

package.json

{
  "name": "md-to-pdf-includes",
  "version": "1.0.0",
  "description": "Custom marked renderer for including other markdown files in md-to-pdf.",
  "main": "index.js",
  "scripts": {
    "start": "node .",
    "test": "echo \"Error: no test specified\" && exit 1"
  },
  "keywords": [],
  "author": "Simon Haenisch (https://github.com/simonhaenisch)",
  "license": "MIT",
  "dependencies": {
    "marked": "0.8.0",
    "md-to-pdf": "2.8.2"
  }
}

recursive-include.md

And I'm included in the include.

test.md

Foobar

Foo

just a normal link

include

Bar