Abort signal for `clone()` API

[lozy219]

Do we need an abort signal for the clone() API? We have one for the assistant creation API and the clone() should have a similar flow.

[domenic]

Yes, good idea! Let's do it. I'll update the explainer soon.

[tomayac]

(Reflected in DefinitelyTyped/DefinitelyTyped#70688.)

[lozy219]

Thanks for adding that into the explainer, but why does clone() API needs a dedicated AIAssistantCreateOptions while the prompt(), promptStreaming(), countPromptTokens() share the AIAssistantPromptOptions?

[domenic]

It is just future-proofing. There is no observable difference at the moment (when they have the same contents). In theory an implementation could consolidate all dictionaries which contain a single signal member into one dictionary, no matter what API they are from.