In "implementers" list, include `extension type` implementers along with classes and mixins

[kevmoo]

See TypeData - https://api.dart.dev/main/4ddc4a9e8d1a13aa50bac280669e4334e39a0b57/dart-typed_data/TypedData-class.html

You see all of the implementers.

See JSTypedArray - https://api.dart.dev/main/4ddc4a9e8d1a13aa50bac280669e4334e39a0b57/dart-js_interop/JSTypedArray-extension-type.html

/// The Javascript `Int8Array`.
@JS('Int8Array')
extension type JSInt8Array._(JSInt8ArrayRepType _jsInt8Array)
    implements JSTypedArray {}

I'd expect to see implementers, too!

[srawlins]

Thanks for the report, Kevin!

[srawlins]

BTW we do have tests that this works so... something fishy :D

[srawlins]

Wait no, you lost me. Why do you expect to see implementers on the page for extension type JSInt8Array? Who implements JSInt8Array? Is that even legal?

[parlough]

I think Kevin means the page for JSTypedArray should show that JSInt8Array implements it.

I still think it's a bit confusing that implements is reused here, so perhaps some further distinguishing makes sense in the UI, not sure?

[srawlins]

OK. We can add that feature.

[kevmoo]

Looking at https://api.dart.dev/main/b4574904f9cd0d6f7147950c02ee2447569d0be9/dart-js_interop/JSTypedArray-extension-type.html

Which corresponds to dart-lang/sdk@b457490

Which includes dart-lang/sdk@7c223d8

Which syncs dartdoc to include https://github.com/dart-lang/dartdoc/compare/7e171fc..7a9df65

It doesn't seem this is fixed!

[srawlins]

Ah, I think it's that JSTypedArray is also an extension type. Can fix.