These names come from the html spec: https://html.spec.whatwg.org/#workerglobalscope https://html.spec.whatwg.org/#workerglobalscope https://html.spec.whatwg.or

These names come from the html spec: https://html.spec.whatwg.org/#workerglobalscope https://html.spec.whatwg.org/#workerglobalscope https://html.spec.whatwg.org/#workletglobalscope https://html.spec.whatwg.org/#workletglobalscope Chromium (and most other browser engines) will use the specification names for things like this. E.g. equivalent code in WebKit, and Gecko: https://github.com/WebKit/WebKit/blob/80c1e6d05e4679c08e3a6e16b61ca8059bd39245/Source/WebCore/worklets/WorkletGlobalScope.h#L54 https://github.com/WebKit/WebKit/blob/80c1e6d05e4679c08e3a6e... https://searchfox.org/mozilla-central/source/dom/worklet/WorkletGlobalScope.h#46 https://searchfox.org/mozilla-central/source/dom/worklet/Wor...