build.js

import * as esbuild	from 'esbuild';
import fs from 'fs';

const options	= { watch: false };
let args		= process.argv.slice(2);
args			= args.map(arg => arg.toLowerCase());

if (args.includes('watch')) {
	options.watch = true;
	args.splice(args.indexOf('watch'), 1);
}

const buildInstructions = [];
fs.readdirSync('./src').forEach(file => {
	if (file.indexOf('_') !== 0) {
		if (args.length === 0 || args.includes(file.substring(0, file.length - 3))) {
			const fileUncompressed = async function() {
				const config = {
					entryPoints:	[`./src/${file}`],
					bundle:			true,
					logLevel:		'info',
					globalName:		'cm6',
					sourcemap:		'external',
					outfile:		`./dist/${file}`,
				};

				if (options.watch) {
					let ctx = await esbuild.context(config);
					await ctx.watch();
					console.log(`Watching ${file}...`);
				} else {
					await esbuild.build(config);
				}
			}

			const fileMinified = async function() {
				const config = {
					entryPoints:	[`./src/${file}`],
					minify:			true,
					bundle:			true,
					logLevel:		'info',
					globalName:		'cm6',
					sourcemap:		'external',
					outfile:		`./dist/${file.replace('.js', '.min.js')}`,
				};

				if (options.watch) {
					let ctx = await esbuild.context(config);
					await ctx.watch();
					console.log(`Watching ${file}...`);
				} else {
					await esbuild.build(config);
				}
			}

			buildInstructions.push(fileUncompressed);
			buildInstructions.push(fileMinified);
		}
	}
});

const run = async function() {
	console.time('⚡ \x1b[32mDone in');

	for (const buildInstruction of buildInstructions) {
		if (options.watch) {
			buildInstruction();
		} else {
			await buildInstruction();
		}
	}

	console.log(`\n⚡ \x1b[32mBuilt: ${buildInstructions.length / 2} languages (${buildInstructions.length * 2} files)\x1b[0m`);
	console.timeEnd('⚡ \x1b[32mDone in');
	console.log('\x1b[0m');
}
run();