ultraviolet/build.js

import { rimraf } from 'rimraf';
import { copyFile, mkdir, readFile, writeFile } from 'node:fs/promises';
import { build } from 'esbuild';
import { execSync } from "node:child_process";

// read version from package.json
const pkg = JSON.parse(await readFile('package.json'));
process.env.ULTRAVIOLET_VERSION = pkg.version;

const isDevelopment = process.argv.includes('--dev');

await rimraf('dist');
await mkdir('dist');

// don't compile these files
await copyFile('src/sw.js', 'dist/sw.js');
await copyFile('src/uv.config.js', 'dist/uv.config.js');

let builder = await build({
    platform: 'browser',
    sourcemap: true,
    minify: !isDevelopment,
    entryPoints: {
        'uv.bundle': './src/rewrite/index.js',
        'uv.client': './src/client/index.js',
        'uv.handler': './src/uv.handler.js',
        'uv.sw': './src/uv.sw.js',
    },
    define: {
        'process.env.ULTRAVIOLET_VERSION': JSON.stringify(
            process.env.ULTRAVIOLET_VERSION
        ),
        'process.env.ULTRAVIOLET_COMMIT_HASH': (() => {
			try {
				let hash = JSON.stringify(
					execSync("git rev-parse --short HEAD", {
						encoding: "utf-8",
					}).replace(/\r?\n|\r/g, "")
				);

				return hash;
			} catch (e) {
				return "unknown";
			}
		})(),
    },
    bundle: true,
    treeShaking: true,
    metafile: isDevelopment,
    logLevel: 'info',
    outdir: 'dist/',
});
if (isDevelopment) {
    await writeFile('metafile.json', JSON.stringify(builder.metafile));
}