release(crates): v0.82.0

[oxc-bot]

[0.82.0] - 2025-08-12

💥 BREAKING CHANGES

• 128b527 data_structures: [BREAKING] Remove PointerExt trait (refactor(data_structures)!: remove PointerExt trait #12903) (overlookmotel)
• 306b023 isolated-declarations: [BREAKING] Rewrite declare module X to declare namespace X (feat(isolated-declarations)!: Rewrite declare module X to declare namespace X #12845) (leaysgur)

🚀 Features

• 54d1750 ecmascript: Handle typeof guarded global access as side effect free (feat(ecmascript): handle typeof guarded global access as side effect free #12981) (Copilot)
• 7b9a781 minifier: Return total number of iterations for debugging (feat(minifier): return total number of iterations for debugging #12995) (Boshen)
• 33c0e9f ecmascript: Add global isNaN, isFinite, parseFloat, parseInt functions support to constant evaluation (feat(ecmascript): add global isNaN, isFinite, parseFloat, parseInt functions support to constant evaluation #12954) (Copilot)
• 577d742 minifier: Logical assignment with sequential (feat(minifier): logical assignment with sequential #12957) (sapphi-red)
• 96a1a4f minifier: Remove optional chaining calls when the function is undefined or null (feat(minifier): remove optional chaining calls when the function is undefined or null #12956) (sapphi-red)
• 208e6f7 ecmascript: Add URI encoding/decoding support to constant evaluation (feat(ecmascript): add URI encoding/decoding support to constant evaluation #12934) (Copilot)
• 53f7a9f minifier: new Date() has ValueType::Object (feat(minifier): new Date() has ValueType::Object #12951) (Boshen)
• e0e835b minifier: f(!a === !1) -> f(!!a) (feat(minifier): f(!a === !1) -> f(!!a) #12942) (Boshen)
• 6e393ec minifier: Evaluate String constructor (feat(minifier): evaluate String constructor #12943) (Boshen)
• 784796d minifier: Fold (!0).toString() to true (feat(minifier): fold (!0).toString() to true #12938) (Boshen)
• 2c303f5 minifier: Fold ({ ...!0 }) into ({}) (feat(minifier): fold ({ ...!0 }) into ({}) #12935) (Boshen)
• bc1d716 ecmascript: Add ARM64 FJCVTZS instruction optimization for ToInt32 with function-specific target features and runtime detection (feat(ecmascript): add ARM64 FJCVTZS instruction optimization for ToInt32 with function-specific target features and runtime detection #12823) (copilot-swe-agent)

🐛 Bug Fixes

• 64326c1 minifier: Improve quoted property key handling for class methods and properties (fix(minifier): improve quoted property key handling for class methods and properties #12999) (Copilot)
• c72f49e ecmascript: Fix merge error (Boshen)
• 724837e semantic: Label redeclaration check for crossing boundary on arrow function (semantic: incorrect error for duplicate labelled statement in arrow function #12679) (fix(semantic): label redeclaration check for crossing boundary on arrow function (#12679) #12948) (Li Wei)
• ad4aeaf minifier: Evaluate e ? consequent : alternate (fix(minifier): evaluate e ? consequent : alternate #12940) (Boshen)

🚜 Refactor

• ca91a26 minfier: Single match expression (refactor(minfier): single match expression #13000) (Boshen)
• 70f742a minifier: Change AST in-place instead of returning Option<Expression> (refactor(minifier): change AST in-place instead of returning Option<Expression> #12993) (Boshen)
• d3ba782 minifier: Fix double mut in DerefMut for Ctx by correcting Target type (refactor(minifier): Fix double mut in DerefMut for Ctx by correcting Target type #12994) (Copilot)
• 451bc07 minifier: Change AST in-place instead of returning Option<Expression> (refactor(minifier): change AST in-place instead of returning Option<Expression> #12969) (Boshen)
• bf9ae3b ast/estree: Remove custom serializer for TSImportTypeQualifier (refactor(ast/estree): remove custom serializer for TSImportTypeQualifier #12961) (overlookmotel)
• e5e2496 minifier: Clean up try_compress_typeof_undefined (refactor(minifier): clean up try_compress_typeof_undefined #12958) (Boshen)
• f6475e1 codegen: Remove the redundant base_len variable (refactor(codegen): remove the redundant base_len variable #12882) (Dunqing)
• 8a5c9b9 minifier,ecmascript: Clean up is_global_reference (refactor(minifier,ecmascript): clean up is_global_reference #12953) (Boshen)
• 0c5bffc ecmascript: Change IsGlobalReference to GlobalContext (refactor(ecmascript): change IsGlobalReference to GlobalContext #12952) (Boshen)
• 4f31b73 allocator: Move allocation tracking code into own module (refactor(allocator): move allocation tracking code into own module #12937) (overlookmotel)
• ff1d93b allocator: Do not make Allocator::bump field public (refactor(allocator): do not make Allocator::bump field public #12936) (overlookmotel)
• 51aaafd rust: Enable unnecessary_unwrap lint (refactor(rust): enable unnecessary_unwrap lint #12908) (camc314)
• 1cb8e1b cfg, formatter: Remove unnecessary return statements (refactor(cfg, formatter): remove unnecessary return statements #12896) (overlookmotel)
• c072e01 all: Add missing lifetimes in function return types (refactor(all): add missing lifetimes in function return types #12895) (overlookmotel)
• 65e2112 transformer: Use to @babel/plugin-transform-explicit-resource-management (refactor(transformer): Use to @babel/plugin-transform-explicit-resource-management #12874) (Copilot)

📚 Documentation

• 3ce27e9 ecmascript, minifier: Revert changes to changelogs (docs(ecmascript, minifier): revert changes to changelogs #12962) (overlookmotel)
• bb7838d data_structures: Add stacks to README (docs(data_structures): add stacks to README #12904) (overlookmotel)
• ed40581 transformer: Improve doc comment formatting (docs(transformer): improve doc comment formatting #12899) (overlookmotel)
• d14b8b8 transformer/styled-components: Remove duplicate backtick (docs(transformer/styled-components): remove duplicate backtick #12897) (camc314)

⚡ Performance

• 47a565f lexer: Only check for hashbang at start of file (perf(lexer): only check for hashbang at start of file #12521) (overlookmotel)
• 96b4009 minifier: Remove late optimization pass (perf(minifier): remove late optimization pass #12670) (Boshen)
• 017e200 codegen: Comprehensive optimization of print_minified_number method (perf(codegen): comprehensive optimization of print_minified_number method #12847) (Copilot)

🎨 Styling

• af065ff codegen: Re-order imports (style(codegen): re-order imports #12918) (overlookmotel)

🧪 Testing

• 2c06eda minifier: Add comprehensive test coverage for unary plus removal (test(minifier): add comprehensive test coverage for unary plus removal #12860) (Copilot)

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[github-actions]

Monitor Oxc

suite	result
Isolated Declarations	❌
(transformer)	❌
(compressor)	❌
(dce)	❌
(whitespace)	❌
(mangler)	❌
(codegen)	❌

[codspeed-hq]

CodSpeed Instrumentation Performance Report

Merging #13014 will not alter performance

_{Comparing release/crates-1754973927 (da9bcdf) with main (54d1750)¹}

Summary

✅ 34 untouched benchmarks

Footnotes

1. No successful run was found on main (c461a86) during the generation of this report, so 54d1750 was used instead as the comparison base. There might be some changes unrelated to this pull request in this report. ↩