*PreloadableWorker.md

PreloadableWorker

There's no way to <link rel=preload> a Web Worker. This fixes that.

npm i -S gist:developit/567dde2346d785b2628224fddbf6783c

<!-- workers are now just a normal script preload: -->
<link rel=preload href=/path/to/worker.js as=script crossorigin>

import PreloadableWorker from 'preloadable-worker';

// use PreloadableWorker instead of Worker
const worker = new PreloadableWorker('/path/to/worker.js', { name: 'my-worker' });
worker.postMessage('hello');

package.json

{
  "version": "0.1.0",
  "name": "preloadable-worker",
  "main": "preloadable-worker.cjs.js",
  "module": "preloadable-worker.js"
}

preloadable-worker.cjs.js

var a;
module.exports = function PreloadableWorker(src, opts) {
  (a || (a = document.createElement('a'))).href = src;
  return new Worker('data:,importScripts("'+a.href+'")', opts);
}

preloadable-worker.js

var a;
export default function PreloadableWorker(src, opts) {
  (a || (a = document.createElement('a'))).href = src;
  return new Worker('data:,importScripts("'+a.href+'")', opts);
}