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workerize-loader

1.0.3 • Public • Published
workerize-loader

workerize-loader npm travis

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`)
})

About Babel

If you're using Babel in your build, make sure you disabled commonJS transform. Otherwize, workerize-loader won't be able to retrieve the list of exported function from your worker script :

{
    test: /\.js$/,
    loader: "babel-loader",
    options: {
        presets: [
            [
                "env",
                {
                    modules: false,
                },
            ],
        ]
    }
}

Credit

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

License

MIT License © Jason Miller

install

npm i workerize-loader

Downloadsweekly downloads

1,116

version

1.0.3

license

MIT

homepage

github.com

repository

Gitgithub

last publish

collaborators

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