Service Workerのビルドにesbuildを使うようにする

packages/sw/build.js

@@ -0,0 +1,37 @@
+const esbuild = require('esbuild');
+const locales = require('../../locales');
+const meta = require('../../package.json');
+const watch = process.argv[2]?.includes('watch');
+
+console.log('Starting SW building...');
+
+esbuild.build({
+	entryPoints: [ `${__dirname}/src/sw.ts` ],
+	bundle: true,
+	format: 'esm',
+	treeShaking: true,
+	minify: process.env.NODE_ENV === 'production',
+	absWorkingDir: __dirname,
+	outbase: `${__dirname}/src`,
+	outdir: `${__dirname}/../../built/_sw_dist_`,
+	loader: {
+		'.ts': 'ts'
+	},
+	tsconfig: `${__dirname}/tsconfig.json`,
+	define: {
+		_VERSION_: JSON.stringify(meta.version),
+		_LANGS_: JSON.stringify(Object.entries(locales).map(([k, v]) => [k, v._lang_])),
+		_ENV_: JSON.stringify(process.env.NODE_ENV),
+		_DEV_: process.env.NODE_ENV !== 'production',
+		_PERF_PREFIX_: JSON.stringify('Misskey:'),
+	},
+	watch: watch ? {
+		onRebuild(error, result) {
+      if (error) console.error('SW: watch build failed:', error);
+      else console.log('SW: watch build succeeded:', result);
+		},
+	} : false,
+}).then(result => {
+	if (watch) console.log('watching...');
+	else console.log('done,', JSON.stringify(result));
+});