#!/usr/bin/env node
const fs = require('fs');
const argparse = require('argparse');
const markdownIt = require('markdown-it');
const markdownItTaskCheckbox = require('markdown-it-task-checkbox');
const markdownItEmoji = require('markdown-it-emoji');
const markdownItHeaderAnchors = require('./markdown-it-header-anchors');
const Prism = require('prismjs');
const loadPrismLanguages = require('prismjs/components/');
let parser = new argparse.ArgumentParser();
parser.addArgument('inputFile', {
nargs: argparse.Const.OPTIONAL,
metavar: 'INPUT_FILE',
help: '(stdin by default)',
});
parser.addArgument('outputFile', {
nargs: argparse.Const.OPTIONAL,
metavar: 'OUTPUT_FILE',
help: '(stdout by default)',
});
let args = parser.parseArgs();
let md = markdownIt({
html: true,
linkify: true,
highlight: (str, lang) => {
if (lang.length > 0) {
loadPrismLanguages([lang]);
if (Object.prototype.hasOwnProperty.call(Prism.languages, lang)) {
return Prism.highlight(str, Prism.languages[lang], lang);
}
}
return str;
},
});
md.use(markdownItTaskCheckbox);
md.use(markdownItEmoji);
md.use(markdownItHeaderAnchors);
let markdownDocument = fs.readFileSync(args.get('inputFile', 0), 'utf-8');
let renderedMarkdown = md.render(markdownDocument);
let githubMarkdownCSS = fs.readFileSync(
require.resolve('github-markdown-css/github-markdown.css'),
);
let syntaxHighlightingThemeCSS = fs.readFileSync(
require.resolve('prismjs/themes/prism.css'),
);
let renderedHtmlDocument = `
${renderedMarkdown}
`;
fs.writeFileSync(args.get('outputFile', 1), renderedHtmlDocument, 'utf-8');