module-workers-polyfill

Module Workers Polyfill

This is a 1.1kb polyfill for Module Workers.

It adds support for new Worker('..',{type:'module'}) to all modern browsers (those that support fetch).

Usage

Copy module-workers-polyfill.js to your web directory, then load it using an import or a script tag. It just needs to be loaded before instantiating your Worker.

<script src="/module-workers-polyfill.js"></script>
<script>
  const worker = new Worker('/worker.mjs', { type: 'module' });
</script>

Example

// load the polyfill:
import '/module-workers-polyfill.js';

// now we can use import-from-worker, which relies on Module Workers:
import importFromWorker from 'https://unpkg.com/import-from-worker@1.0.1/dist/import-from-worker.js';

function getAcornAST(code) {
  const { parse } = await importFromWorker('https://unpkg.com/acorn@7.1.0/dist/acorn.mjs');
  return await parse(code, { sourceType: 'module' });
}