mono-runner/build.js

A script runner for mono repos that just works. Use Mono to run separate compilers and dev servers for your packages at once, build only dependent packages or format everything at once.

const ncc = require("@vercel/ncc");
const fs = require("fs");
const fsp = require("fs/promises");
const path = require("path");

const externals = ["vite", "typescript"];

const build = async (input) => {
	const abs = path.join(__dirname, input);
	const res = await ncc(abs, {
		externals,
		filterAssetBase: path.join(__dirname, "lib"),
	});
	return res;
};

const clearFolder = async(folder) => {
	const dir = await fsp.readdir(folder);
	const prms = dir.map(async (file) => {
		const curPath = path.join(folder, file);
		if((await fsp.lstat(curPath)).isDirectory()) {
			await clearFolder(curPath);
		}
		await fsp.unlink(path.join(folder, file)).catch(() => {});
	});
	await Promise.all(prms);
};

const run = async () => {
	const outDir = path.join(__dirname, "dist");
	!fs.existsSync(outDir) && fs.mkdirSync(outDir);
	clearFolder(outDir);
	
	const res = build("./lib/index.ts");
	const cli = build("./lib/cli.ts");
	const tsc = build("./lib/tsc.ts");

	const [{ code: resCode, assets }, { code: cliCode }, { code: tscCode}] = await Promise.all([res, cli, tsc]);
	fs.writeFileSync("./dist/index.js", resCode, {});
	fs.writeFileSync("./dist/cli.js", cliCode);
	fs.writeFileSync("./dist/tsc.mjs", tscCode);
	fs.chmodSync("./dist/index.js", "755");
	fs.chmodSync("./dist/cli.js", "755");
	fs.chmodSync("./dist/tsc.mjs", "755");

	for (const key in assets) {
		if (Object.hasOwnProperty.call(assets, key)) {
			if (!key.endsWith(".d.ts") || !key.startsWith("lib/")) continue;
			const element = assets[key];
			const relative = path.relative("lib", key);
			const output = path.join(outDir, relative);
			const outFolder = path.dirname(output);
			!fs.existsSync(outFolder) && fs.mkdirSync(outFolder, { recursive: true });
			fs.writeFileSync(output, element.source);
		}
	}
};

run();