https://html.spec.whatwg.org/multipage/interaction.html#focus-processing-model

Let candidate be target's top-level browsing context's active document.

This should be

Let candidate be target's browsing context's top-level browsing context's active document.

where the inserted "browsing context" links to #concept-document-bc.

I know this is specific to web workers, however I think this could be adapted to work for service workers. I was looking to create a separate plugin but the code would be mostly the same.

Looks like it scans the AST for a keyword (Worker) and generates an entry for the referenced file.

// web worker
new Worker('./foo.js', { type: 'module' })

// service worker
navigator.servi

Problem

Synchronous calls are blocking the even loop leading to performance degradation:

The synchronous form blocks the Node.js event loop and further JavaScript execution until the operation is complete.
(reference)

Current state

The codebase uses [fs.statSync](https://nodejs.org/dist/latest-v14.x/do

Crash java.lang.RuntimeException: java.util.concurrent.ExecutionException: java.lang.RuntimeException: Unable to load script from assets 'threads/pre-load-data-worker.thread.bundle'. Make sure your bundle is packaged correctly or you're running a packager server.

![screen shot 2018-07-28 at 11 29 18](https://user-images.githubusercontent.com/3612098/43357535-8379af28-9259-11e8-9c5a-96