RESOLVED CONFIGURATION CHANGED 183629
Allow extending of event objects 
https://bugs.webkit.org/show_bug.cgi?id=183629
Summary Allow extending of event objects
Jake Archibald
Reported 2018-03-14 05:56:38 PDT
class Foo extends Event {} console.log(new Foo('bar').constructor); Chrome & Firefox say Foo, Edge & Safari say Event. The Chrome/Firefox behaviour is preferable, as it allows you to create custom event objects, which is especially useful when developing custom elements.
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Add attachment proposed patch, testcase, etc.
Lucas Forschler
Comment 2 2019-02-06 09:19:17 PST
Mass move bugs into the DOM component.
Alexey Shvayka
Comment 3 2020-04-17 15:03:38 PDT
(In reply to Jake Archibald from comment #1) > Tests: http://w3c-test.org/dom/events/Event-subclasses-constructors.html As of r256716, extending Event (as well as other DOM constructors) works as expected. Provided test file is 100% passing.
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