RESOLVED DUPLICATE of bug 187575173081
navigator.mediaDevices should be instance of EventTarget 
https://bugs.webkit.org/show_bug.cgi?id=173081
Summary navigator.mediaDevices should be instance of EventTarget
Stefan Fochler
Reported 2017-06-07 15:52:34 PDT
Overview: navigator.mediaDevices does not implement EventTarget, although the current Media Capture specification draft states (in the WebIDL section below https://w3c.github.io/mediacapture-main/#mediadevices), that MediaDevices and thus navigator.mediaDevices inherits from the EventTarget. Steps to Reproduce: 1. Open the Web Inspector on any page 2. Try using the EventTarget's methods (addEventListener...) on navigator.mediaDevices Actual Result: The desired methods are not available. navigator.mediaDevices instanceof EventTarget === false Expected Result: One can use addEventListener and removeEventListener to listen for the "devicechange" event. Build Date & Hardware: Safari TP 33 on macOS 10.12.5
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Radar WebKit Bug Importer
Comment 1 2017-06-08 21:46:03 PDT
<rdar://problem/32666694>
Alexey Shvayka
Comment 2 2021-03-16 19:26:50 PDT
r233761 fixed `navigator.mediaDevices` to extend EventTarget. *** This bug has been marked as a duplicate of bug 187575 ***
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