[FEAT][AsyncThunk] Pass abort reason of thunk action to AbortController #2395

[FaberVitale]

Closes #2395

Description

asyncThunkApi.signal.reason is set to the first value provided to asyncThunkHandle.abort.

Other changes

• fixes signal.aborted not being set to true in the AbortController shim if abort is called.

Implementation details

It uses a utility function abortControllerWithReason, already used within the listenerMiddleware, that patches reason if it is not available.

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[phryneas]

To be honest, I'm not really sure if I like the thought of adding more "polyfill-like" code. Actually, I'd like to remove the AbortController polyfill in general with RTK 2.0 (#2448).

So I guess we'd need a bit research first:

• At that point, what platforms do have AbortController, but not reason?
• As these platforms will need a Polyfill anyways, which of the existing polyfills do not have reason?
• If all platforms that have it natively support reason, wouldn't it make more sense to just PR into the missing polyfills?

[FaberVitale]

Why should these changes be included in a minor release (1.9)?

1. fix signal.aborted not being set to true in the polyfill that causes inconsistent behavior between runtimes.
2. Add support to signal.reason reusing code that is already part of listenerMiddleware logic.

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what platforms do have AbortController, but not reason?

signal.reason support | 2022-06-25

abortSignal.reason is available in:

server runtimes

• node ^16.14.0
• node ^17.2.0
• node ^18.0.0
• deno ^1.16

browsers

• can i use 82.51%

Samsung internet is a relevant mobile browser (especially in Germany) that does not support signal.reason.

createAsyncThunk changes for 2.0.0

I agree that we should remove if possible obsolete polyfills in 2.0.