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Avoid unpreventable unhandledRejection events #16167

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merged 3 commits into from Dec 12, 2023

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Q                       A
Fixed Issues? Fixes #16163
Patch: Bug Fix?
Major: Breaking Change?
Minor: New Feature?
Tests Added + Pass? Yes
Documentation PR Link
Any Dependency Changes?
License MIT

The main fix is to only reject the resultP "cache" if that promise is has actually been exposed to a caller. If it hasn't, then there is nobody using it and thus there is no need to reject it (and no way to handle that rejection).

In order to do this, we have to replace resultP with a "synchronous result" (an object with ok and value properties) once it's completion is known, so that when the operation throws we can synchronously throw without waiting on resultP.

@nicolo-ribaudo nicolo-ribaudo added PR: Bug Fix 🐛 A type of pull request used for our changelog categories pkg: core labels Dec 11, 2023
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babel-bot commented Dec 11, 2023

Build successful! You can test your changes in the REPL here: https://babeljs.io/repl/build/55996/

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The diff is terrible, it might be easier to review by reading the once function before and after.

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Amazing!
I'm not familiar with this but from testing it looks good.

@nicolo-ribaudo nicolo-ribaudo merged commit 3e79f48 into babel:main Dec 12, 2023
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@nicolo-ribaudo nicolo-ribaudo deleted the issue-16163 branch December 12, 2023 09:15
Vylpes pushed a commit to Vylpes/random-bunny that referenced this pull request Jan 16, 2024
This PR contains the following updates:

| Package | Type | Update | Change |
|---|---|---|---|
| [@babel/traverse](https://babel.dev/docs/en/next/babel-traverse) ([source](https://github.com/babel/babel)) | resolutions | patch | [`7.23.5` -> `7.23.7`](https://renovatebot.com/diffs/npm/@babel%2ftraverse/7.23.5/7.23.7) |

---

### Release Notes

<details>
<summary>babel/babel (@&#8203;babel/traverse)</summary>

### [`v7.23.7`](https://github.com/babel/babel/blob/HEAD/CHANGELOG.md#v7237-2023-12-29)

[Compare Source](babel/babel@v7.23.6...v7.23.7)

##### 🐛 Bug Fix

-   `babel-traverse`
    -   [#&#8203;16191](babel/babel#16191) fix: Crash when removing without `Program` ([@&#8203;liuxingbaoyu](https://github.com/liuxingbaoyu))
-   `babel-helpers`, `babel-plugin-proposal-decorators`
    -   [#&#8203;16180](babel/babel#16180) fix: Class decorator `ctx.kind` is wrong ([@&#8203;liuxingbaoyu](https://github.com/liuxingbaoyu))
-   `babel-plugin-proposal-decorators`
    -   [#&#8203;16170](babel/babel#16170) Fix decorator initProto usage in derived classes ([@&#8203;JLHwung](https://github.com/JLHwung))
-   `babel-core`
    -   [#&#8203;16167](babel/babel#16167) Avoid unpreventable `unhandledRejection` events ([@&#8203;nicolo-ribaudo](https://github.com/nicolo-ribaudo))

##### 🏠 Internal

-   `babel-helper-create-class-features-plugin`
    -   [#&#8203;16186](babel/babel#16186) chore: Update deps ([@&#8203;liuxingbaoyu](https://github.com/liuxingbaoyu))
-   `babel-helper-create-class-features-plugin`, `babel-plugin-proposal-decorators`
    -   [#&#8203;16177](babel/babel#16177) Merge decorators into class features ([@&#8203;JLHwung](https://github.com/JLHwung))

### [`v7.23.6`](https://github.com/babel/babel/blob/HEAD/CHANGELOG.md#v7236-2023-12-11)

[Compare Source](babel/babel@v7.23.5...v7.23.6)

##### 👓 Spec Compliance

-   `babel-generator`, `babel-parser`, `babel-types`
    -   [#&#8203;16154](babel/babel#16154) Remove `TSPropertySignature.initializer` ([@&#8203;fisker](https://github.com/fisker))
-   `babel-helpers`, `babel-plugin-proposal-decorators`, `babel-plugin-transform-class-properties`, `babel-plugin-transform-class-static-block`, `babel-plugin-transform-runtime`, `babel-preset-env`, `babel-runtime-corejs2`, `babel-runtime-corejs3`, `babel-runtime`, `babel-types`
    -   [#&#8203;16139](babel/babel#16139) Apply `toPropertyKey` on decorator context name ([@&#8203;JLHwung](https://github.com/JLHwung))

##### 🐛 Bug Fix

-   `babel-generator`
    -   [#&#8203;16166](babel/babel#16166) fix: Correctly indenting when `retainLines` is enabled ([@&#8203;liuxingbaoyu](https://github.com/liuxingbaoyu))
-   `babel-helpers`, `babel-plugin-proposal-explicit-resource-management`
    -   [#&#8203;16150](babel/babel#16150) `using`: Allow looking up `Symbol.dispose` on a function ([@&#8203;odinho](https://github.com/odinho))
-   `babel-plugin-proposal-decorators`, `babel-plugin-transform-class-properties`
    -   [#&#8203;16161](babel/babel#16161) Ensure the `[[@&#8203;@&#8203;toPrimitive]]` call of a decorated class member key is invoked once ([@&#8203;JLHwung](https://github.com/JLHwung))
    -   [#&#8203;16148](babel/babel#16148) Support named evaluation for decorated anonymous class exp ([@&#8203;JLHwung](https://github.com/JLHwung))
-   `babel-plugin-transform-for-of`, `babel-preset-env`
    -   [#&#8203;16011](babel/babel#16011) fix: `for of` with `iterableIsArray` and shadowing variable  ([@&#8203;liuxingbaoyu](https://github.com/liuxingbaoyu))
-   `babel-helpers`, `babel-plugin-proposal-decorators`, `babel-runtime-corejs2`, `babel-runtime-corejs3`, `babel-runtime`
    -   [#&#8203;16144](babel/babel#16144) Set function name for decorated private non-field elements ([@&#8203;JLHwung](https://github.com/JLHwung))
-   `babel-plugin-transform-typescript`
    -   [#&#8203;16137](babel/babel#16137) Fix references to enum values with merging ([@&#8203;nicolo-ribaudo](https://github.com/nicolo-ribaudo))

##### 🔬 Output optimization

-   `babel-helper-create-class-features-plugin`, `babel-plugin-transform-class-properties`
    -   [#&#8203;16159](babel/babel#16159) Reuse computed key memoiser ([@&#8203;JLHwung](https://github.com/JLHwung))
-   `babel-helpers`, `babel-plugin-proposal-decorators`
    -   [#&#8203;16160](babel/babel#16160) Optimize decorator helper size ([@&#8203;liuxingbaoyu](https://github.com/liuxingbaoyu))

</details>

---

### Configuration

📅 **Schedule**: Branch creation - At any time (no schedule defined), Automerge - At any time (no schedule defined).

🚦 **Automerge**: Disabled by config. Please merge this manually once you are satisfied.

♻ **Rebasing**: Whenever PR becomes conflicted, or you tick the rebase/retry checkbox.

🔕 **Ignore**: Close this PR and you won't be reminded about this update again.

---

 - [ ] <!-- rebase-check -->If you want to rebase/retry this PR, check this box

---

This PR has been generated by [Renovate Bot](https://github.com/renovatebot/renovate).
<!--renovate-debug:eyJjcmVhdGVkSW5WZXIiOiIzNy4wLjAiLCJ1cGRhdGVkSW5WZXIiOiIzNy4wLjAiLCJ0YXJnZXRCcmFuY2giOiJkZXZlbG9wIn0=-->

Reviewed-on: https://gitea.vylpes.xyz/RabbitLabs/random-bunny/pulls/129
Co-authored-by: Renovate Bot <renovate@vylpes.com>
Co-committed-by: Renovate Bot <renovate@vylpes.com>
@github-actions github-actions bot added the outdated A closed issue/PR that is archived due to age. Recommended to make a new issue label Mar 13, 2024
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[Bug]: @babel/eslint-parser/experimental-worker hang when .babelrc located in directory
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