Playwright Firefox Webworkers

Webworker code gets run twice in Firefox and the globalThis object is different in each run?

Install deps:

$ npm i

The example starts an instance of Firefox and loads html/index.html, which in turn loads a single webworker which just prints a console line.

In practice it prints two console lines with different values for globalThis.

Run example:

$ npm start

> playwright-ff-webworkers@1.0.0 start
> node .

globalThis in worker is JSHandle@object
globalThis in worker is [object DedicatedWorkerGlobalScope]