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@wolfgang42 wolfgang42 commented Oct 25, 2025

Summary:

The abort-controller package hasn't been updated since 2019, and is missing a number of useful features from the current DOM specification. So, switch to abortcontroller-polyfill to get a more modern implementation.

Fixes #42042, fixes #50015.

Changelog:

[General] [Changed] - Improve AbortController API support

Test Plan:

I attempted to run packages/react-native/src/private/webapis/dom/events/__tests__/EventTarget-itest.js, which exercises AbortController, but encountered problems getting fantom set up correctly; I am therefore relying on CI (and the assumption that the upstream package knows what they’re doing).

The `abort-controller` package hasn't been updated since 2019, and is
missing a number of useful features from the current DOM specification.
So, switch to `abortcontroller-polyfill` to get a more modern
implementation.

Fixes facebook#42042 and facebook#50015.
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@meta-cla meta-cla bot added the CLA Signed This label is managed by the Facebook bot. Authors need to sign the CLA before a PR can be reviewed. label Oct 25, 2025
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@wolfgang42 wolfgang42 marked this pull request as ready for review October 25, 2025 18:21
@facebook-github-bot facebook-github-bot added the Shared with Meta Applied via automation to indicate that an Issue or Pull Request has been shared with the team. label Oct 25, 2025
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meta-codesync bot commented Oct 25, 2025

@robhogan has imported this pull request. If you are a Meta employee, you can view this in D85507864.

@robhogan
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Importing to run through internal CI, but this LGTM on the face of it, thanks @wolfgang42!

@wolfgang42
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@robhogan I can see that CI failed but no further details, LMK if there’s anything I can do to help.

@mozzius
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mozzius commented Nov 1, 2025

fyi, I found that abortcontroller-polyfill uses DOMException for AbortSignal.timeout, which isn't available in React Native.

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Successfully merging this pull request may close these issues.

AbortSignal/AbortController doesn't work AbortSignal, TypeError: AbortSignal.timeout is not a function

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