Bundle javascript inline into html files

a-readme.md

Put into your source directory. Run with node bundle-scripts.js on the command line. You can probably put the command into a .bat file (Windows) or .sh file (Mac OSX, Linux) so you can just double-click it to build?

bundle-scripts.js

const fs = require('fs')

function replaceScript(m, open, filename, rest, close) {
	const script = fs.readFileSync(filename, {encoding:'utf-8'})
	return open + rest + script + close
}

function replaceScripts(htmlSource) {
	const script = /(<script[^>]*)\s+src="([^"]*)"([^>]*>)(<\/script>)/g
	return htmlSource.replace(script, replaceScript)
}

function bundleScripts(filenameIn, filenameOut) {
	const htmlIn = fs.readFileSync(filenameIn, {encoding:'utf-8'})
	const htmlOut = replaceScripts(htmlIn)
	fs.writeFileSync(filenameOut, htmlOut, {encoding:'utf-8'})
}

// Can call this multiple times if you need to process several html files.
bundleScripts('index.html', 'index2.html')