transfer-out: transfer out

scripts/build-package.ts

@@ -0,0 +1,107 @@
+import { build } from 'esbuild'
+import { copyFileSync, existsSync } from 'fs'
+import glob from 'glob'
+import kleur from 'kleur'
+import path from 'path'
+import rimraf from 'rimraf'
+import { pathToFileURL } from 'url'
+import { addJsExtensions } from './lib/add-extensions'
+
+/** Prepares the package for publishing. the tarball in case it will be written to disk. */
+async function buildPackage({ sourcePackageDir }: { sourcePackageDir: string }) {
+	// this depends on `build:types` being run first, but we'll rely on turbo to
+	// make that happen.
+
+	if (!existsSync(path.join(sourcePackageDir, 'src/index.ts'))) {
+		throw new Error(`No src/index.ts file found in '${sourcePackageDir}'!`)
+	}
+
+	rimraf.sync(path.join(sourcePackageDir, 'dist'))
+
+	// then copy over the source .ts files
+	const sourceFiles = glob
+		.sync(path.join(sourcePackageDir, 'src/**/*.ts?(x)'))
+		// ignore test files
+		.filter(
+			(file) =>
+				!(file.includes('/__tests__/') || file.includes('.test.') || file.includes('/test/'))
+		)
+
+	// build js files to /dist
+	await buildEsm({ sourceFiles, sourcePackageDir })
+	await buildCjs({ sourceFiles, sourcePackageDir })
+
+	copyFileSync(
+		path.join(sourcePackageDir, `api/public.d.ts`),
+		path.join(sourcePackageDir, 'dist-cjs/index.d.ts')
+	)
+
+	copyFileSync(
+		path.join(sourcePackageDir, `api/public.d.ts`),
+		path.join(sourcePackageDir, 'dist-esm/index.d.mts')
+	)
+}
+
+/** This uses esbuild to build the esm version of the package */
+async function buildEsm({
+	sourceFiles,
+	sourcePackageDir,
+}: {
+	sourceFiles: string[]
+	sourcePackageDir: string
+}) {
+	const outdir = path.join(sourcePackageDir, 'dist-esm')
+	rimraf.sync(outdir)
+	const res = await build({
+		entryPoints: sourceFiles,
+		outdir,
+		bundle: false,
+		platform: 'neutral',
+		sourcemap: true,
+		format: 'esm',
+		outExtension: { '.js': '.mjs' },
+	})
+
+	addJsExtensions(path.join(sourcePackageDir, 'dist-esm'))
+
+	if (res.errors.length) {
+		console.error(kleur.red('Build failed with errors:'))
+		console.error(res.errors)
+		throw new Error('esm build failed')
+	}
+}
+
+/** This uses esbuild to build the cjs version of the package */
+async function buildCjs({
+	sourceFiles,
+	sourcePackageDir,
+}: {
+	sourceFiles: string[]
+	sourcePackageDir: string
+}) {
+	const outdir = path.join(sourcePackageDir, 'dist-cjs')
+	rimraf.sync(outdir)
+	const res = await build({
+		entryPoints: sourceFiles,
+		outdir,
+		bundle: false,
+		platform: 'neutral',
+		sourcemap: true,
+		format: 'cjs',
+	})
+
+	if (res.errors.length) {
+		console.error(kleur.red('Build failed with errors:'))
+		console.error(res.errors)
+		throw new Error('commonjs build failed')
+	}
+}
+
+if (import.meta.url === pathToFileURL(process.argv[1]).href) {
+	// module was called directly
+	;(async () => {
+		await buildPackage({
+			sourcePackageDir: process.cwd(),
+		})
+	})()
+}