workers

A body element's start tag may be omitted if the element is empty, or if the first thing inside the body element is not [ASCII whitespace](https://infra.spec.whatwg.org/#ascii-white

Is there a way to make a job re-occur N milliseconds after it finished previous time?

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

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