TaskAttributionTiming[] syntax is not valid Web IDL

[domenic]

Some older specs use this construct, but it's not good. I think you want FrozenArray<TaskAttributionTiming>

[spanicker]

@igrigorik
Other performance types use sequence, should we deviate here?

[domenic]

Note that per https://heycam.github.io/webidl/#idl-attributes it is impossible for the type of an attribute to be a sequence type... ("The type of the attribute, after resolving typedefs, must not be a nullable or non-nullable version of any of the following types:")

So yeah, I think deviating is the right thing to do, and preferably fixing the other performance specs so that they are implementable in browsers like Firefox that have a strict Web IDL parser.

[spanicker]

already updated to FrozenArray