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fix(eslint-plugin): [no-misused-promises] prioritize false returns when checking whether a function returns only void #4841

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JoshuaKGoldberg
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Overview

Previously, isVoidReturningFunctionType immediately returned true as soon as it found a void return. This meant a => void type before a => Promise<...> in a union would return before checking the latter case.

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Thanks for the PR, @JoshuaKGoldberg!

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codecov bot commented Apr 20, 2022

Codecov Report

Merging #4841 (5c02b2c) into main (88ed9ec) will increase coverage by 0.00%.
The diff coverage is 100.00%.

@@           Coverage Diff           @@
##             main    #4841   +/-   ##
=======================================
  Coverage   94.23%   94.24%           
=======================================
  Files         152      152           
  Lines        8281     8282    +1     
  Branches     2694     2695    +1     
=======================================
+ Hits         7804     7805    +1     
  Misses        263      263           
  Partials      214      214           
Flag Coverage Δ
unittest 94.24% <100.00%> (+<0.01%) ⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files Coverage Δ
...ges/eslint-plugin/src/rules/no-misused-promises.ts 98.25% <100.00%> (ø)
packages/eslint-plugin/src/rules/no-namespace.ts 100.00% <100.00%> (ø)

@bradzacher bradzacher added the bug Something isn't working label Apr 22, 2022
@bradzacher bradzacher changed the title fix(eslint-plugin): prioritize false returns when checking whether a function returns only void fix(eslint-plugin): [no-misused-promises] prioritize false returns when checking whether a function returns only void Apr 22, 2022
bradzacher
bradzacher previously approved these changes Apr 22, 2022
Co-authored-by: Brad Zacher <brad.zacher@gmail.com>
@JoshuaKGoldberg JoshuaKGoldberg enabled auto-merge (squash) April 22, 2022 17:18
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Grr, mistimed the auto-updating...

@JoshuaKGoldberg JoshuaKGoldberg merged commit ccadb60 into typescript-eslint:main Apr 22, 2022
@JoshuaKGoldberg JoshuaKGoldberg deleted the no-misused-promises-lazy-unions branch April 22, 2022 18:15
crapStone pushed a commit to Calciumdibromid/CaBr2 that referenced this pull request May 1, 2022
This PR contains the following updates:

| Package | Type | Update | Change |
|---|---|---|---|
| [@typescript-eslint/eslint-plugin](https://github.com/typescript-eslint/typescript-eslint) | devDependencies | minor | [`5.20.0` -> `5.21.0`](https://renovatebot.com/diffs/npm/@typescript-eslint%2feslint-plugin/5.20.0/5.21.0) |
| [@typescript-eslint/parser](https://github.com/typescript-eslint/typescript-eslint) | devDependencies | minor | [`5.20.0` -> `5.21.0`](https://renovatebot.com/diffs/npm/@typescript-eslint%2fparser/5.20.0/5.21.0) |

---

### Release Notes

<details>
<summary>typescript-eslint/typescript-eslint (@&#8203;typescript-eslint/eslint-plugin)</summary>

### [`v5.21.0`](https://github.com/typescript-eslint/typescript-eslint/blob/HEAD/packages/eslint-plugin/CHANGELOG.md#&#8203;5210-httpsgithubcomtypescript-eslinttypescript-eslintcomparev5200v5210-2022-04-25)

[Compare Source](typescript-eslint/typescript-eslint@v5.20.0...v5.21.0)

##### Bug Fixes

-   **eslint-plugin:** \[no-misused-promises] prioritize false returns when checking whether a function returns only void ([#&#8203;4841](typescript-eslint/typescript-eslint#4841)) ([ccadb60](typescript-eslint/typescript-eslint@ccadb60))
-   **eslint-plugin:** \[no-namespace] fix false positive for exported namespaces when allowDeclarations=true ([#&#8203;4844](typescript-eslint/typescript-eslint#4844)) ([4e7c9be](typescript-eslint/typescript-eslint@4e7c9be))
-   **eslint-plugin:** \[space-infix-ops] fix no error when right type is function ([#&#8203;4848](typescript-eslint/typescript-eslint#4848)) ([d74d559](typescript-eslint/typescript-eslint@d74d559))

##### Features

-   **eslint-plugin:** \[parameter-properties] add rule to replace `no-parameter-properties` ([#&#8203;4622](typescript-eslint/typescript-eslint#4622)) ([88ed9ec](typescript-eslint/typescript-eslint@88ed9ec))

</details>

<details>
<summary>typescript-eslint/typescript-eslint (@&#8203;typescript-eslint/parser)</summary>

### [`v5.21.0`](https://github.com/typescript-eslint/typescript-eslint/blob/HEAD/packages/parser/CHANGELOG.md#&#8203;5210-httpsgithubcomtypescript-eslinttypescript-eslintcomparev5200v5210-2022-04-25)

[Compare Source](typescript-eslint/typescript-eslint@v5.20.0...v5.21.0)

**Note:** Version bump only for package [@&#8203;typescript-eslint/parser](https://github.com/typescript-eslint/parser)

</details>

---

### Configuration

📅 **Schedule**: 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 these updates again.

---

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

---

This PR has been generated by [Renovate Bot](https://github.com/renovatebot/renovate).

Co-authored-by: cabr2-bot <cabr2.help@gmail.com>
Reviewed-on: https://codeberg.org/Calciumdibromid/CaBr2/pulls/1319
Reviewed-by: Epsilon_02 <epsilon_02@noreply.codeberg.org>
Co-authored-by: Calciumdibromid Bot <cabr2_bot@noreply.codeberg.org>
Co-committed-by: Calciumdibromid Bot <cabr2_bot@noreply.codeberg.org>
@github-actions github-actions bot locked as resolved and limited conversation to collaborators May 23, 2022
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[no-misused-promises] non-thenable thenable union react component attribute does not accept thenable function
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