Skip to content

refactor: add AppendOnlyStackedSet iteration support and tests#20560

Open
hai-x wants to merge 1 commit intomainfrom
stacked-set
Open

refactor: add AppendOnlyStackedSet iteration support and tests#20560
hai-x wants to merge 1 commit intomainfrom
stacked-set

Conversation

@hai-x
Copy link
Member

@hai-x hai-x commented Mar 1, 2026

Summary

What kind of change does this PR introduce?

Fix an issue where this._current could retain a reference to a cleared set after calling AppendOnlyStackedSet.clear(), which might cause unexpected bugs. Also add tests for AppendOnlyStackedSet.

Did you add tests for your changes?

Yes

Does this PR introduce a breaking change?

No

If relevant, what needs to be documented once your changes are merged or what have you already documented?

No

Use of AI

No

@changeset-bot
Copy link

changeset-bot bot commented Mar 1, 2026

⚠️ No Changeset found

Latest commit: ad1cc74

Merging this PR will not cause a version bump for any packages. If these changes should not result in a new version, you're good to go. If these changes should result in a version bump, you need to add a changeset.

This PR includes no changesets

When changesets are added to this PR, you'll see the packages that this PR includes changesets for and the associated semver types

Click here to learn what changesets are, and how to add one.

Click here if you're a maintainer who wants to add a changeset to this PR

@github-actions
Copy link
Contributor

github-actions bot commented Mar 1, 2026

This PR is packaged and the instant preview is available (ad1cc74).

Install it locally:

  • npm
npm i -D webpack@https://pkg.pr.new/webpack@ad1cc74
  • yarn
yarn add -D webpack@https://pkg.pr.new/webpack@ad1cc74
  • pnpm
pnpm add -D webpack@https://pkg.pr.new/webpack@ad1cc74

@codspeed-hq
Copy link

codspeed-hq bot commented Mar 1, 2026

Merging this PR will improve performance by 29.63%

⚡ 2 improved benchmarks
✅ 142 untouched benchmarks

Performance Changes

Mode Benchmark BASE HEAD Efficiency
Memory benchmark "css-modules", scenario '{"name":"mode-production","mode":"production"}' 9.7 MB 7.5 MB +29.63%
Memory benchmark "context-esm", scenario '{"name":"mode-production","mode":"production"}' 10.1 MB 7.8 MB +28.86%

Comparing stacked-set (ad1cc74) with main (4098902)

Open in CodSpeed

@hai-x hai-x marked this pull request as ready for review March 1, 2026 14:02
@github-actions
Copy link
Contributor

github-actions bot commented Mar 1, 2026

Types Coverage

Coverage after merging stacked-set into main will be
98.94%
Coverage Report
FileStmtsBranchesFuncsLinesUncovered Lines
bin
   webpack.js98.77%100%100%98.77%91
examples
   build-common.js100%100%100%100%
   buildAll.js100%100%100%100%
   examples.js100%100%100%100%
   template-common.js98.21%100%100%98.21%72
examples/custom-javascript-parser
   test.filter.js100%100%100%100%
examples/custom-javascript-parser/internals
   acorn-parse.js100%100%100%100%
   meriyah-parse.js100%100%100%100%
   oxc-parse.js91.30%100%100%91.30%140, 142–143, 145, 147, 153–154, 161, 168, 90
examples/markdown
   webpack.config.mjs100%100%100%100%
examples/typescript
   test.filter.js50%100%100%50%5
examples/virtual-modules
   test.filter.js100%100%100%100%
examples/wasm-bindgen-esm
   test.filter.js100%100%100%100%
examples/wasm-complex
   test.filter.js100%100%100%100%
examples/wasm-simple
   test.filter.js100%100%100%100%
lib
   APIPlugin.js100%100%100%100%
   AbstractMethodError.js100%100%100%100%
   AsyncDependenciesBlock.js100%100%100%100%
   AsyncDependencyToInitialChunkError.js100%100%100%100%
   AutomaticPrefetchPlugin.js100%100%100%100%
   BannerPlugin.js100%100%100%100%
   Cache.js98.21%100%100%98.21%87
   CacheFacade.js100%100%100%100%
   CaseSensitiveModulesWarning.js100%100%100%100%
   Chunk.js99.72%100%100%99.72%37
   ChunkGraph.js100%100%100%100%
   ChunkGroup.js100%100%100%100%
   ChunkRenderError.js100%100%100%100%
   ChunkTemplate.js100%100%100%100%
   CleanPlugin.js98.72%100%100%98.72%212, 232, 42
   CodeGenerationError.js100%100%100%100%
   CodeGenerationResults.js100%100%100%100%
   CommentCompilationWarning.js100%100%100%100%
   CompatibilityPlugin.js100%100%100%100%
   Compilation.js98.54%100%100%98.54%1500, 1789, 1796, 1804, 1826, 2702, 3120, 3768, 3797, 3849–3850, 3854, 3859, 3875–3876, 3890–3891, 3896–3897, 4359, 4385, 467, 472, 5068, 5148, 5163, 5188–5189, 5191, 5507, 5512, 5518, 5521, 5533, 5535, 5539, 5555, 5570, 5601, 5655, 5679, 5789, 678–679
   Compiler.js99.55%100%100%99.55%1084–1085, 1093
   ConcatenationScope.js98.59%100%100%98.59%166
   ConcurrentCompilationError.js100%100%100%100%
   ConditionalInitFragment.js100%100%100%100%
   ConstPlugin.js100%100%100%100%
   ContextExclusionPlugin.js100%100%100%100%
   ContextModule.js100%100%100%100%
   ContextModuleFactory.js97.75%100%100%97.75%253, 385, 410, 435, 439, 450
   ContextReplacementPlugin.js100%100%100%100%
   CssModule.js80.49%100%100%80.49%139, 144–158
   DefinePlugin.js98.92%100%100%98.92%153–154, 170, 189, 263
   DelegatedModule.js95.24%100%100%95.24%240–244
   DelegatedModuleFactoryPlugin.js98.15%100%100%98.15%103
   DelegatedPlugin.js100%100%100%100%
   DependenciesBlock.js100%100%100%100%
   Dependency.js98.13%100%100%98.13%351, 381
   DependencyTemplate.js100%100%100%100%
   DependencyTemplates.js100%100%100%100%
   DllEntryPlugin.js100%100%100%100%
   DllModule.js100%100%100%100%
   DllModuleFactory.js100%100%100%100%
   DllPlugin.js100%100%100%100%
   DllReferencePlugin.js100%100%100%100%
   DotenvPlugin.js97.92%100%100%97.92%373, 386–387, 40
   DynamicEntryPlugin.js100%100%100%100%
   EntryOptionPlugin.js100%100%100%100%
   EntryPlugin.js100%100%100%100%
   Entrypoint.js100%100%100%100%
   EnvironmentNotSupportAsyncWarning.js100%100%100%100%
   EnvironmentPlugin.js97.14%100%100%97.14%48
   ErrorHelpers.js100%100%100%100%
   EvalDevToolModulePlugin.js100%100%100%100%
   EvalSourceMapDevToolPlugin.js100%100%100%100%
   ExportsInfo.js100%100%100%100%
   ExportsInfoApiPlugin.js100%100%100%100%
   ExternalModule.js98.86%100%100%98.86%384–388, 525
   ExternalModuleFactoryPlugin.js100%100%100%100%
   ExternalsPlugin.js100%100%100%100%
   FalseIIFEUmdWarning.js100%100%100%100%
   FileSystemInfo.js99.49%100%100%99.49%168, 2140–2141, 2144, 2155, 2166, 2177, 261, 3495, 3510, 3534
   FlagAllModulesAsUsedPlugin.js100%100%100%100%
   FlagDependencyExportsPlugin.js98.74%100%100%98.74%396, 398, 402
   FlagDependencyUsagePlugin.js100%100%100%100%
   FlagEntryExportAsUsedPlugin.js100%100%100%100%
   Generator.js100%100%100%100%
   GraphHelpers.js100%100%100%100%
   HarmonyLinkingError.js100%100%100%100%
   HookWebpackError.js100%100%100%100%
   HotModuleReplacementPlugin.js100%100%100%100%
   HotUpdateChunk.js100%100%100%100%
   IgnoreErrorModuleFactory.js100%100%100%100%
   IgnorePlugin.js100%100%100%100%
   IgnoreWarningsPlugin.js100%100%100%100%
   InitFragment.js100%100%100%100%
   InvalidDependenciesModuleWarning.js100%100%100%100%
   JavascriptMetaInfoPlugin.js100%100%100%100%
   LibManifestPlugin.js97.14%100%100%97.14%114, 117
   LibraryTemplatePlugin.js100%100%100%100%
   LoaderOptionsPlugin.js100%100%100%100%
   LoaderTargetPlugin.js100%100%100%100%
   MainTemplate.js100%100%100%100%
   ManifestPlugin.js100%100%100%100%
   Module.js98.49%100%100%98.49%1186, 1191, 1234, 1247, 1304, 1312
   ModuleBuildError.js100%100%100%100%
   ModuleDependencyError.js100%100%100%100%
   ModuleDependencyWarning.js100%100%100%100%
   ModuleError.js100%100%100%100%
   ModuleFactory.js100%100%100%100%
   ModuleFilenameHelpers.js98.85%100%100%98.85%105, 107
   ModuleGraph.js99.73%100%100%99.73%942
   ModuleGraphConnection.js100%100%100%100%
   ModuleHashingError.js100%100%100%100%
   ModuleInfoHeaderPlugin.js100%100%100%100%
   ModuleNotFoundError.js100%100%100%100%
   ModuleParseError.js100%100%100%100%
   ModuleProfile.js100%100%100%100%
   ModuleRestoreError.js100%100%100%100%
   ModuleSourceTypeConstants.js100%100%100%100%
   ModuleStoreError.js100%100%100%100%
   ModuleTemplate.js100%100%100%100%
   ModuleTypeConstants.js100%100%100%100%
   ModuleWarning.js100%100%100%100%
   MultiCompiler.js99.69%100%100%99.69%619
   MultiStats.js100%100%100%100%
   MultiWatching.js100%100%100%100%
   NoEmitOnErrorsPlugin.js100%100%100%100%
   NoModeWarning.js100%100%100%100%
   NodeStuffInWebError.js100%100%100%100%
   NodeStuffPlugin.js100%100%100%100%
   NormalModule.js97.78%100%100%97.78%1028, 1044, 1131, 1761, 1766–1776, 214, 717, 735, 752, 994
   NormalModuleFactory.js99.46%100%100%99.46%1032, 1337, 447, 459
   NormalModuleReplacementPlugin.js100%100%100%100%
   NullFactory.js100%100%100%100%
   OptimizationStages.js100%100%100%100%
   OptionsApply.js100%100%100%100%
   Parser.js100%100%100%100%
   PlatformPlugin.js100%100%100%100%
   PrefetchPlugin.js100%100%100%100%
   ProgressPlugin.js98.74%100%100%98.74%413–414, 419, 421, 485
   ProvidePlugin.js100%100%100%100%
   RawModule.js100%100%100%100%
   RecordIdsPlugin.js100%100%100%100%
   RequestShortener.js100%100%100%100%
   RequireJsStuffPlugin.js100%100%100%100%
   ResolverFactory.js100%100%100%100%
   RuntimeGlobals.js100%100%100%100%
   RuntimeModule.js100%100%100%100%
   RuntimePlugin.js100%100%100%100%
   RuntimeTemplate.js100%100%100%100%
   SelfModuleFactory.js100%100%100%100%
   SingleEntryPlugin.js100%100%100%100%
   SizeFormatHelpers.js100%100%100%100%
   SourceMapDevToolModuleOptionsPlugin.js100%100%100%100%
   SourceMapDevToolPlugin.js99.15%100%100%99.15%263–264, 606
   Stats.js100%100%100%100%
   Template.js100%100%100%100%
   TemplatedPathPlugin.js98.84%100%100%98.84%128–129
   UnhandledSchemeError.js100%100%100%100%
   UnsupportedFeatureWarning.js100%100%100%100%
   UseStrictPlugin.js100%100%100%100%
   WarnCaseSensitiveModulesPlugin.js100%100%100%100%
   WarnDeprecatedOptionPlugin.js100%100%100%100%
   WarnNoModeSetPlugin.js100%100%100%100%
   WatchIgnorePlugin.js100%100%100%100%
   Watching.js100%100%100%100%
   WebpackError.js96.97%100%100%96.97%43
   WebpackIsIncludedPlugin.js100%100%100%100%
   WebpackOptionsApply.js100%100%100%100%
   WebpackOptionsDefaulter.js100%100%100%100%
   buildChunkGraph.js99.87%100%100%99.87%317
   cli.js98.71%100%100%98.71%109, 453, 485, 527, 785
   formatLocation.js100%100%100%100%
   index.js100%100%100%100%
   validateSchema.js94.67%100%100%94.67%86, 88, 97, 99
   webpack.js97.87%100%100%97.87%178, 180
lib/asset
   AssetBytesGenerator.js100%100%100%100%
   AssetBytesParser.js100%100%100%100%
   AssetGenerator.js100%100%100%100%
   AssetModulesPlugin.js97.17%100%100%97.17%261, 285, 288, 340, 40, 49
   AssetParser.js100%100%100%100%
   AssetSourceGenerator.js100%100%100%100%
   AssetSourceParser.js100%100%100%100%
   RawDataUrlModule.js100%100%100%100%
lib/async-modules
   AsyncModuleHelpers.js100%100%100%100%
   AwaitDependenciesInitFragment.js100%100%100%100%
   InferAsyncModulesPlugin.js100%100%100%100%
lib/cache
   AddBuildDependenciesPlugin.js100%100%100%100%
   AddManagedPathsPlugin.js100%100%100%100%
   IdleFileCachePlugin.js97.92%100%100%97.92%70, 82, 90
   MemoryCachePlugin.js95.83%100%100%95.83%33
   MemoryWithGcCachePlugin.js93.15%100%100%93.15%104, 111–112, 120, 87
   PackFileCacheStrategy.js96.40%100%100%96.40%1225,

Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment

Labels

None yet

Projects

None yet

Development

Successfully merging this pull request may close these issues.

1 participant