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@sapphi-red sapphi-red commented Nov 26, 2025

fixes #16107

@github-actions github-actions bot added the A-minifier Area - Minifier label Nov 26, 2025
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@github-actions github-actions bot added the C-bug Category - Bug label Nov 26, 2025
@sapphi-red sapphi-red requested a review from Boshen November 26, 2025 13:00
@sapphi-red sapphi-red marked this pull request as ready for review November 26, 2025 13:01
Copilot AI review requested due to automatic review settings November 26, 2025 13:01
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codspeed-hq bot commented Nov 26, 2025

CodSpeed Performance Report

Merging #16161 will not alter performance

Comparing 11-26-fix_minifier_incorrect_non-null_object_condition_simplification_with_and_ (382c7cb) with main (8f4137d)1

Summary

✅ 38 untouched
⏩ 7 skipped2

Footnotes

  1. No successful run was found on main (86fa667) during the generation of this report, so 8f4137d was used instead as the comparison base. There might be some changes unrelated to this pull request in this report.

  2. 7 benchmarks were skipped, so the baseline results were used instead. If they were deleted from the codebase, click here and archive them to remove them from the performance reports.

Copilot finished reviewing on behalf of sapphi-red November 26, 2025 13:02
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Pull request overview

This PR fixes a bug in the minifier's substitute_is_object_and_not_null optimization where it incorrectly simplified expressions involving mixed && and || operators. The fix adds a check to ensure that nested logical expressions use the same operator before applying the optimization.

  • Adds operator consistency check to prevent incorrect simplification across mixed logical operators
  • Adds comprehensive test cases covering mixed &&/|| scenarios that were previously broken
  • Adds negative test cases to verify expressions that should not be transformed

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@Boshen Boshen added the 0-merge Merge with Graphite Merge Queue label Nov 27, 2025
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Boshen commented Nov 27, 2025

Merge activity

@graphite-app graphite-app bot force-pushed the 11-26-fix_minifier_incorrect_non-null_object_condition_simplification_with_and_ branch from 382c7cb to 6b54dab Compare November 27, 2025 07:41
@graphite-app graphite-app bot merged commit 6b54dab into main Nov 27, 2025
20 checks passed
@graphite-app graphite-app bot deleted the 11-26-fix_minifier_incorrect_non-null_object_condition_simplification_with_and_ branch November 27, 2025 07:47
@graphite-app graphite-app bot removed the 0-merge Merge with Graphite Merge Queue label Nov 27, 2025
overlookmotel pushed a commit that referenced this pull request Dec 1, 2025
### 💥 BREAKING CHANGES

- 74cf572 ast: [**BREAKING**] Make `source` field of `TSImportType` a
`StringLiteral` (#16114) (copilot-swe-agent)
- 43156ae ast: [**BREAKING**] Rename `TSImportType` `argument` field to
`source` (#16110) (overlookmotel)
- 934d873 napi: [**BREAKING**] Drop `armv7-unknown-linux-musleabihf`
support (#16105) (Boshen)

### 🚀 Features

- 669afe0 ast: Add `Expression::is_jsx` method (#16154) (Dunqing)
- 17a8caa parser: Add diagnostic for JSX identifiers with hyphens
(#16133) (camchenry)
- 0549ae5 parser: Add diagnostic for expected ident after optional chain
(#16132) (camchenry)
- db839ae parser: Improve diagnostic for unexpected optional
declarations (#16131) (camchenry)
- bab4bc8 napi/parser: Add type annotations to parse-raw-worker test
(#15998) (camc314)

### 🐛 Bug Fixes

- 35ed36c traverse: Fix panic when truncating non-ASCII variable names
(#16265) (peter)
- 9149a26 linter/plugins, napi/parser: Deep freeze visitor keys (#16293)
(overlookmotel)
- 6b54dab minifier: Incorrect non-null object condition simplification
with `&&` and `||` (#16161) (sapphi-red)
- 9cc20a1 minifier: Avoid merging side effectful expressions to next
assignment statement if the side effect may change the left hand side
reference (#16165) (sapphi-red)
- 91eb3f2 ast/estree: Convert `TSImportType` `argument` field to
`Literal` (#16109) (overlookmotel)
- 1199cee parser: Reject invalid modifiers on parameter properties with
binding patterns (#16083) (camc314)
- f376325 traverse: Remove `console.log` from build script (#16049)
(overlookmotel)

### ⚡ Performance

- 82d784f lexer: Reduce bounds checks in `Lexer::get_string` (#16317)
(overlookmotel)
- cc2f352 span: Add `#[inline]` to `Atom` methods (#16311)
(overlookmotel)
- ffca070 span: Add `#[repr(transparent)]` to `Atom` (#16310)
(overlookmotel)
- 02bdf90 linter/plugins, napi/parser: Reuse arrays in visitor keys
(#16294) (overlookmotel)

### 📚 Documentation

- 891e0b4 parser: Add note about falling back to parse TSType in
TSImportType (#16119) (camc314)

Co-authored-by: Boshen <1430279+Boshen@users.noreply.github.com>
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Condition logic incorrect after minification

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