[SameObject] should not be used in FrozenArray attributes

[rakuco]

https://webidl.spec.whatwg.org/#SameObject says

The [SameObject] extended attribute must not be used on anything other than a read only attribute whose type is an interface type or object.

MediaMetadata.chapterInfo and ChapterInformation.artwork are FrozenArray types, which do not qualify according to the spec.

[marcoscaceres]

That’s weird, because Array is kinda an interface type. Did this come up before in another context? (We should probably get WebIDL to explicitly say this is not allowed in a note or something)

[rakuco]

Did this come up before in another context? (We should probably get WebIDL to explicitly say this is not allowed in a note or something)

I was checking [SameObject]'s description in the context of another spec and stumbled upon the attributes here. But I agree this is confusing, so I've filed whatwg/webidl#1402 to get some clarification.

[marcoscaceres]

@rakuco what's the latest? Seems there is no resolution yet on the IDL side? Still unsure if this is a problem or not.

[rakuco]

I was hoping for a quicker resolution of the Web IDL issue I filed. If you prefer, we can close this issue and I can reopen it if/when there's an outcome there.

[marcoscaceres]

Yeah, let’s close for now.