build: bundle with esbuild (#257)

1 files changed, 40 insertions, 0 deletions

diff --git a/scripts/bundle.ts b/scripts/bundle.ts
new file mode 100644
index 00000000..793f27a1
--- /dev/null
+++ b/scripts/bundle.ts
@@ -0,0 +1,40 @@
+import { buildSync } from 'esbuild';
+import { sync as globSync } from 'glob';
+import locales from '../src/locales';
+
+console.log('Building dist for node (cjs)...');
+buildSync({
+  entryPoints: globSync('./src/**/*.ts'),
+  // We can use the following entry points when esbuild supports cjs+splitting
+  // entryPoints: [
+  //   './src/index.ts',
+  //   ...Object.keys(locales).map((locale) => `./src/locale/${locale}.ts`),
+  //   './src/iban.ts',
+  //   './src/mersenne.ts',
+  // ],
+  outdir: './dist/cjs',
+  bundle: false, // Creates 390MiB bundle ...
+  sourcemap: false,
+  minify: true,
+  // splitting: true, // Doesn't work with cjs
+  format: 'cjs',
+  platform: 'node',
+  target: 'node12',
+});
+
+console.log('Building dist for node type=module (esm)...');
+buildSync({
+  entryPoints: [
+    './src/index.ts',
+    ...Object.keys(locales).map((locale) => `./src/locale/${locale}.ts`),
+    './src/iban.ts',
+    './src/mersenne.ts',
+  ],
+  outdir: './dist/esm',
+  bundle: true,
+  sourcemap: false,
+  minify: true,
+  splitting: true,
+  format: 'esm',
+  target: 'node12.20',
+});