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perf(packages/codegen): remove redundant mapping from printParams - #25880

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Aug 18, 2026
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perf(packages/codegen): remove redundant mapping from printParams#25880
graphite-app[bot] merged 1 commit into
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om/08-18-perf_packages_codegen_remove_redundant_mapping_from_printparams_

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@overlookmotel

@overlookmotel overlookmotel commented Aug 18, 2026

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Follow-on after #25585. Small optimization.

It's redundant to call markWithMapNoName with decorators[0] as printDecorators marks the same mapping immediately after.

overlookmotel commented Aug 18, 2026

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Pull request overview

This PR makes a small performance optimization in the JS code generator’s parameter printing logic by removing a redundant source-map “mark” when parameters have decorators, relying on printDecorators to record the mapping instead.

Changes:

  • Avoids calling markWithMapNoName for decorated parameters in printParams.
  • Keeps the mapping behavior for non-decorated parameters by continuing to mark the parameter node directly.

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@camc314 camc314 added the 0-merge Merge with Graphite Merge Queue label Aug 18, 2026

camc314 commented Aug 18, 2026

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Merge activity

@graphite-app
graphite-app Bot changed the base branch from om/08-15-test_package_codegen_add_benchmark_with_sourcemaps to graphite-base/25880 August 18, 2026 16:17
@graphite-app
graphite-app Bot changed the base branch from graphite-base/25880 to main August 18, 2026 16:33
…25880)

Follow-on after #25585. Small optimization.

It's redundant to call `markWithMapNoName` with `decorators[0]` as `printDecorators` marks the same mapping immediately after.
@graphite-app
graphite-app Bot force-pushed the om/08-18-perf_packages_codegen_remove_redundant_mapping_from_printparams_ branch from c5d985d to 8801662 Compare August 18, 2026 16:34
@graphite-app
graphite-app Bot merged commit 8801662 into main Aug 18, 2026
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@graphite-app graphite-app Bot removed the 0-merge Merge with Graphite Merge Queue label Aug 18, 2026
@graphite-app
graphite-app Bot deleted the om/08-18-perf_packages_codegen_remove_redundant_mapping_from_printparams_ branch August 18, 2026 16:40
graphite-app Bot pushed a commit that referenced this pull request Aug 19, 2026
### 🚀 Features

- 83cb516 minifier: Improve negation of expressions in boolean context (#25755) (Armano)

### 🐛 Bug Fixes

- 134fb22 isolated-declarations: Preserve unresolved parameter types (#25909) (Dunqing)
- 526c2b3 codegen: Remove deprecated test APIs (#25889) (camc314)
- 344a9b2 codegen: Align enum template sourcemaps (#25872) (camc314)

### ⚡ Performance

- 5ef0c93 minifier: Unwrap all unary exprs without creating dummy expressions (#25891) (Armano)
- 8783524 packages/codegen: Remove loop from `growMappingBuffer` (#25886) (overlookmotel)
- b6b14c0 packages/codegen: Remove redundant branch (#25885) (overlookmotel)
- be6adf0 packages/sourcemap: Make `location` passed to `recordSourceMapping` always a number (#25884) (overlookmotel)
- f720f15 packages/codegen: Take named-mapping only code off hot path in `recordSourceMapping` (#25883) (overlookmotel)
- a734af5 packages/codegen: Remove redundant setting of `last` in `printImportAttributes` and `printIf` (#25882) (overlookmotel)
- c6e44c6 packages/codegen: Combine 2 writes in `printJSXElement` (#25881) (overlookmotel)
- 8801662 packages/codegen: Remove redundant mapping from `printParams` (#25880) (overlookmotel)

### 📚 Documentation

- 5ad330e packages/codegen: Reformat comments (#25876) (overlookmotel)
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A-codegen Area - Code Generation

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