According to the web worker MDN docs(https://developer.mozilla.org/en-US/docs/Web/API/Web_Workers_API/Functions_and_classes_available_to_workers), Promise is not in the available list.
But when I try to debug in worker file, and console log the self object, it has Promise inside.
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I try to run new Promise() in web worker, and it works.I am confused why I can call Promise in web worker