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fix(linter/no-unused-vars): false positive for functions and classes in arrays #6394

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DonIsaac
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@DonIsaac DonIsaac commented Oct 9, 2024

Fixes a false positive when a function or class expression is an array element.
Found while linting Jest tests in an internal repo.

import { stringify } from './custom-stringify';

test.each(['a', 1, function foo() {}])('When stringifying %p, matches the snapshot', input => {
    expect(stringify(input)).toMatchSnapshot();
})

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DonIsaac commented Oct 9, 2024

@github-actions github-actions bot added the A-linter Area - Linter label Oct 9, 2024
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codspeed-hq bot commented Oct 9, 2024

CodSpeed Performance Report

Merging #6394 will not alter performance

Comparing don/10-09-fix_linter/no-unused-vars_false_positive_for_functions_and_classes_in_arrays (e08f956) with main (994b60b)

Summary

✅ 29 untouched benchmarks

@DonIsaac DonIsaac added the 0-merge Merge with Graphite Merge Queue label Oct 9, 2024 — with Graphite App
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graphite-app bot commented Oct 9, 2024

Merge activity

…in arrays (#6394)

Fixes a false positive when a function or class expression is an array element.
Found while linting Jest tests in an internal repo.

```js
import { stringify } from './custom-stringify';

test.each(['a', 1, function foo() {}])('When stringifying %p, matches the snapshot', input => {
    expect(stringify(input)).toMatchSnapshot();
})
```
@DonIsaac DonIsaac force-pushed the don/10-09-fix_linter/no-unused-vars_false_positive_for_functions_and_classes_in_arrays branch from 2fca16f to e08f956 Compare October 9, 2024 19:44
@graphite-app graphite-app bot merged commit e08f956 into main Oct 9, 2024
26 checks passed
@graphite-app graphite-app bot deleted the don/10-09-fix_linter/no-unused-vars_false_positive_for_functions_and_classes_in_arrays branch October 9, 2024 19:48
DonIsaac added a commit that referenced this pull request Oct 19, 2024
## [0.10.0] - 2024-10-18

- 7f6b219 editor/vscode: [**BREAKING**] Unify configuration logic
(#6630) (DonIsaac)

- 782f0a7 codegen: [**BREAKING**] Rename `print_char` method to
`print_ascii_byte` (#6512) (overlookmotel)

- 7645e5c codegen: [**BREAKING**] Remove CommentOptions API (#6451)
(Boshen)

- 5200960 oxc: [**BREAKING**] Remove passing `Trivias` around (#6446)
(Boshen)

- 80266d8 linter: [**BREAKING**] Support plugins in oxlint config files
(#6088) (DonIsaac)

### Features

- 6f22538 ecmascript: Add `ToBoolean`, `ToNumber`, `ToString` (#6502)
(Boshen)
- 1e7fab3 linter: Implement `no-callback-in-promise` (#6157) (dalaoshu)
- c56343d linter: Promote `no_unsafe_optional_chaining` to correctness
(#6491) (Boshen)
- 454874a linter: Implement `react/iframe-missing-sandbox` (#6383) (Radu
Baston)
- c8174e2 linter: Add suggestions for `no-plusplus` (#6376) (camchenry)
- 6e3224d linter: Configure by category in config files (#6120)
(DonIsaac)
- c5e66e1 linter/no-unused-vars: Report own type references within
class, interface, and type alias declarations (#6557) (DonIsaac)
- 8c78f97 linter/node: Implement no-new-require (#6165) (Jelle van der
Waa)

### Bug Fixes

- cf92730 editor: Use human-readable output channel names (#6629)
(DonIsaac)
- d9159a2 editor: Misaligned command prefixes (#6628) (DonIsaac)
- b9c94bb editors/vscode: Temporarily solve oxc_language_server issue on
windows (#6384) (dalaoshu)
- e340424 linter: Support import type with namespaced import in
`import/no-duplicates` (#6650) (Dmitry Zakharov)
- a668397 linter: Panic in `no-else-return` (#6648) (dalaoshu)
- 41dc8e3 linter: Stack overflow in `oxc/no-async-endpoint-handlers`
(#6614) (DonIsaac)
- d07a9b0 linter: Panic in `no-zero-fractions` (#6607) (dalaoshu)
- d6a0d2e linter: Fix file name checking behavior of
`unicorn/filename-case` (#6463) (camchenry)
- 0784e74 linter: Error fixer of `switch-case-braces` (#6474) (dalaoshu)
- e811812 linter: Error diagnostic message based on parameter length of
valid-expect (#6455) (dalaoshu)
- f71c91e linter: Move `eslint/sort-keys` to `style` category (#6377)
(DonIsaac)
- 2b86de9 linter/no-control-regex: False negative for flags in template
literals (#6531) (DonIsaac)
- 685a590 linter/no-control-regex: Better diagnostic messages (#6530)
(DonIsaac)
- 6d5a9f2 linter/no-control-regex: Allow capture group references
(#6529) (DonIsaac)
- ba53bc9 linter/no-unused-vars: False positives in TS type assertions
(#6397) (DonIsaac)
- d3e59c6 linter/no-unused-vars: False positive in some default export
cases (#6395) (DonIsaac)
- e08f956 linter/no-unused-vars: False positive for functions and
classes in arrays (#6394) (DonIsaac)
- b9d7c5f no-unused-vars: Consider functions within conditional
expressions usable (#6553) (Brian Donovan)

### Performance

- 0cbd4d0 linter: Avoid megamorphism in `RuleFixer` methods (#6606)
(DonIsaac)
- 725f9f6 linter: Get fewer parent nodes in
`unicorn/prefer-dom-node-text-content` (#6467) (camchenry)
- c00f669 linter: Use NonZeroUsize for pending module cache entries
(#6439) (DonIsaac)
- a1a2721 linter: Replace `ToString::to_string` with `CompactStr` in
remaining rules (#6407) (camchenry)
- c5c69d6 linter: Use `CompactStr` in `valid-title` (#6406) (camchenry)
- d66e826 linter: Use `CompactStr` in `prefer-lowercase-title` (#6405)
(camchenry)
- 889400c linter: Use `CompactStr` for `get_node_name` in Jest rules
(#6403) (camchenry)
- 9906849 linter: Use `CompactStr` in `no-large-snapshots` (#6402)
(camchenry)
- c382ec4 linter: Use `CompactStr` in `no-hooks` (#6401) (camchenry)
- 24a5d9b linter: Use `CompactStr` in `expect-expect` (#6400)
(camchenry)
- 71dbdad linter: Use `CompactStr` in `no-console` (#6399) (camchenry)
- f5f00a1 linter: Use `CompactStr` in `no-bitwise` (#6398) (camchenry)
- 62afaa9 linter/jsx-no-comment-textnodes: Remove regex for checking
comment patterns (#6534) (camchenry)
- b3d0cce linter/no-unescaped-entities: Add fast path to check if char
should be replaced (#6594) (camchenry)
- ee73f56 linter/no-unused-vars: Do not construct `Regex` for default
ignore pattern (#6590) (camchenry)
- 77ddab8 linter/numeric-separators-style: Replace regex with number
parser (#6546) (camchenry)
- 8f47cd0 linter/react: Remove regex patterns in `no-unknown-property`
(#6536) (camchenry)

### Documentation

- 557f941 linter: Add docs to no-unused-vars and Tester (#6558)
(DonIsaac)

### Refactor

- ecce5c5 linter: Improve recursive argument handling and diagnostics
creation (#6513) (no-yan)
- f960e9e linter: Add suggested file names for `unicorn/filename-case`
(#6465) (camchenry)
- 7240ee2 linter: Make advertised fix kinds consistent (#6461)
(Alexander S.)
- b48c368 linter: `no_global_assign` rule: reduce name lookups (#6460)
(overlookmotel)
- 2566ce7 linter: Remove OxlintOptions (#6098) (DonIsaac)
- 002078a linter: Make Runtime's members private (#6440) (DonIsaac)
- 6a0a533 linter: Move module cache logic out of Runtime (#6438)
(DonIsaac)
- c18c6e9 linter: Split service code into separate modules (#6437)
(DonIsaac)
- 5ea9ef7 linter: Improve labels and help message for
`eslint/no-useless-constructor` (#6389) (DonIsaac)
- 2c32dac linter/no-control-regex: Remove duplicate code (#6527)
(DonIsaac)
- 435a89c oxc: Remove useless `allocator.alloc(program)` calls (#6571)
(Boshen)
- f70e93b oxc: Ban index methods on std::str::Chars (#6075) (dalaoshu)

### Testing

- a6cae98 linter: Make sure all auto-fixing rules have fixer test
(#6378) (DonIsaac)
- 06b09b2 linter/no-unused-vars: Enable now-passing tests (#6556)
(DonIsaac)
- badd11c linter/no-unused-vars: Ignored catch parameters (#6555)
(DonIsaac)
- 84aa2a2 linter/no-useless-constructor: Add cases for initializers in
subclass constructors (#6390) (DonIsaac)

---------

Co-authored-by: DonIsaac <22823424+DonIsaac@users.noreply.github.com>
Co-authored-by: autofix-ci[bot] <114827586+autofix-ci[bot]@users.noreply.github.com>
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