release(crates): v0.78.0

[oxc-bot]

[0.78.0] - 2025-07-24

💥 BREAKING CHANGES

• ccbcf3e transformer, minifier, syntax: [BREAKING] Remove ESTarget::ES5 (feat(transformer, minifier, syntax)!: remove ESTarget::ES5 #12448) (Dunqing)

🚀 Features

• c135beb codegen: Keep function expression PIFEs (feat(codegen): keep function expression PIFEs #12470) (sapphi-red)
• dee25f4 ast: Add pife field to Function (feat(ast): add pife field to Function #12469) (sapphi-red)
• f6e2f29 minifier: Remove unused class declaration (feat(minifier): remove unused class declaration #12419) (Boshen)

🐛 Bug Fixes

• 7c2d2c6 transformer/top-level-statements: Should not inject statements after non-import statement (fix(transformer/top-level-statements): should not inject statements after non-import statement #12463) (Dunqing)
• 9a9d78d isolated-declarations: Transformed parameter property has an incorrect type annotation (fix(isolated-declarations): transformed parameter property has an incorrect type annotation #12450) (Dunqing)
• 89da027 isolated-declarations: Incorrect error when exported type is locally shadowed by an unexported variable (fix(isolated-declarations): incorrect error when exported type is locally shadowed by an unexported variable #12466) (Dunqing)
• dcb245c transformer/typescript: Incorrect evaluation of TemplateLiteral in enum (fix(transformer/typescript): incorrect evaluation of TemplateLiteral in enum #12456) (Dunqing)
• 986c48e transformer/decorator: Transformed decorators should be injected after class-properties has run (fix(transformer/decorator): transformed decorators should be injected after class-properties has run #12418) (Dunqing)
• c4a2d79 transformer/typescript: Should remove abstract field early (fix(transformer/typescript): should remove abstract field early #12417) (Dunqing)

🚜 Refactor

• 2874ec4 semantic: Remove redundant default implementation for Binder::binder (refactor(semantic): remove redundant default implementation for Binder::binder #12447) (Dunqing)
• 7a0da04 diagnostics: Remove Option wrapper from MPSC channel and sender field (refactor(diagnostics): remove Option wrapper from MPSC channel and sender field #12467) (camc314)
• 3541739 transformer/typescript: Take a Vec rather than take elements of Vec one by one (refactor(transformer/typescript): take a Vec rather than take elements of Vec one by one #12462) (Dunqing)
• 93a5b76 transformer/typescript: Simplify evaulating the of value an enum member without an initialzier (refactor(transformer/typescript): simplify evaulating the of value an enum member without an initialzier #12461) (Dunqing)
• 6838948 minifier: Remove change detection based on function changes (refactor(minifier): remove change detection based on function changes #12429) (Boshen)
• 124d376 allocator: Remove unnecessary Send impl for FixedSizeAllocator (refactor(allocator): remove unnecessary Send impl for FixedSizeAllocator #12426) (overlookmotel)
• 1cf08c0 minifier: Make DCE remove more code to align with rollup (refactor(minifier): make DCE remove more code to align with rollup #12427) (Boshen)
• c375981 napi/oxlint: Simplify atomic operations (refactor(napi/oxlint): simplify atomic operations #12425) (overlookmotel)
• c1b2f48 napi/oxlint: Prevent lint warning in release mode (refactor(napi/oxlint): prevent lint warning in release mode #12408) (overlookmotel)

⚡ Performance

• f32c816 transformer/typescript: Store Atom rather than String for ConstantValue::String (perf(transformer/typescript): store Atom rather than String for ConstantValue::String #12458) (Dunqing)

[graphite-app]

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[github-actions]

Monitor Oxc

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

[graphite-app]

There appears to be a duplicate changelog entry for version 0.78.0 in the napi/transform/CHANGELOG.md file. The same content appears twice consecutively (lines 7-17 and lines 19-29). One of these duplicate entries should be removed to maintain a clean changelog history and prevent confusion for users reviewing the changes.

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[codspeed-hq]

CodSpeed Instrumentation Performance Report

Merging #12486 will not alter performance

_{Comparing release/crates-1753329646 (6d71472) with main (ccbcf3e)}

Summary

✅ 34 untouched benchmarks