bun-externals

What

Workaround for bun not having a way to define all node_modules as external oven-sh/bun#6351

Installation

bun install -D @enalmada/bun-externals

Usage

// build.ts
/// <reference types="bun-types" />

import getExternalDependencies from '@enalmada/bun-externals';

export async function buildWithExternals(): Promise<void> {
  const externals = await getExternalDependencies();

  const result = await Bun.build({
    entrypoints: ['./src/index.ts'],
    outdir: './dist',
    target: 'node',
    external: externals,
    root: './src',
  });

  if (!result.success) {
    console.error('Build failed');
    for (const message of result.logs) {
      console.error(message);
    }
    throw new AggregateError(result.logs, 'Build failed');
  }
}

void buildWithExternals();

See build.ts for example

TODO

deprecate with a plugin or actual bun feature

Notes

Build

Using latest module and target settings for current LTS
using tsc for types until bun support comes around

Contribute

Using changesets so please remember to run "changeset" with any PR that might be interesting to people on an older template. Although this isn't being deployed as a module, I would like to call out things worth keeping in sync.

Enalmada/bun-externals