Krivega / worker-plugin

🐳 Adds native Web Worker bundling support to Webpack.

👩‍🏭 worker-plugin

Automatically bundle & compile Web Workers within Webpack.

Features

Automatically compiles modules loaded in Web Workers:

const worker = new Worker('./foo.js', { type: 'module' });
                          ^^^^^^^^^^
                          gets bundled using webpack

The best part? That worker constructor works just fine without bundling turned on too.

Workers created from Blob & data URLs or without the { type:'module' } option are left unchanged.

Installation

npm install -D worker-plugin

Then drop it into your webpack.config.js:

+ const WorkerPlugin = require('worker-plugin');

module.exports = {
  <...>
  plugins: [
+    new WorkerPlugin()
  ]
  <...>
}

Usage

worker.js: (our worker module)

// This is a module worker, so we can use imports (in the browser too!)
import { calculatePi } from './some-other-module';

addEventListener('message', event => {
  postMessage(calculatePi(event.data));
});

main.js: (our demo, on the main thread)

const piWorker = new Worker('./worker.js', { type: 'module' });
piWorker.onmessage = event => {
  console.log('pi: ' + event.data);
};
piWorker.postMessage(42);

License

Apache-2.0