workerize-loader

A webpack loader that moves a module and its dependencies into a Web Worker, automatically reflecting exported functions as asynchronous proxies.

• Bundles a tiny, purpose-built RPC implementation into your app
• If exported module methods are already async, signature is unchanged
• Supports synchronous and asynchronous worker functions
• Works beautifully with async/await
• Imported value is instantiable, just a decorated Worker

Install

npm install -D workerize-loader

Usage

worker.js:

// block for `time` ms, then return the number of loops we could run in that time:
export function expensive(time) {
    let start = Date.now(),
        count = 0
    while (Date.now() - start < time) count++
    return count
}

index.js: (our demo)

import worker from 'workerize-loader!./worker'
let instance = worker()  // `new` is optional
instance.expensive(1000).then( count => {
    console.log(`Ran ${count} loops`)
})

Credit

The inner workings here are heavily inspired by worker-loader. It’s worth a read!

License

MIT License © Jason Miller