release(crates): v0.64.0

[oxc-bot]

[0.64.0] - 2025-04-17

• 09f4c30 ast: [BREAKING] Remove ArrayAssignmentTarget::new_with_elements and ObjectAssignmentTarget::new_with_properties (refactor(ast)!: remove ArrayAssignmentTarget::new_with_elements and ObjectAssignmentTarget::new_with_properties #10440) (overlookmotel)

• c538efa ast: [BREAKING] ImportExpression only allows one option argument (fix(ast)!: ImportExpression only allows one option argument #10432) (Boshen)

• 7284135 ast: [BREAKING] Remove trailing_commas from ArrayExpression and ObjectExpression (refactor(ast)!: remove trailing_commas from ArrayExpression and ObjectExpression #10431) (Boshen)

• 771d50f ast: [BREAKING] Change Class::implements to Vec<TSClassImplements> (fix(ast)!: change Class::implements to Vec<TSClassImplements> #10430) (Boshen)

• 521de23 ast: [BREAKING] Add computed property to TSEnumMember and TSEnumMemberName::TemplateString (feat(ast)!: Add computed property to TSEnumMember and TSEnumMemberName::TemplateString #10092) (Yuji Sugiura)

• 49732ff ast: [BREAKING] Re-introduce TSEnumBody AST node (feat(ast)!: Re-introduce TSEnumBody AST node #10284) (Yuji Sugiura)

Features

• 4c246fb ast: Add override field in AccessorProperty (feat(ast): Add override field in AccessorProperty #10415) (Yuji Sugiura)
• 2c66ac2 codegen: Preserve code coverage ignore comments (e.g. v8 ignore) (feat(codegen): preserve code coverage ignore comments (e.g. v8 ignore) #10338) (Boshen)
• 1a37e3f semantic: Add SymbolFlags::Ambient for declaration with declare modifier (feat(semantic): add SymbolFlags::Ambient for declaration with declare modifier #10355) (Dunqing)
• 08a1d4b transformer: Eliminate ExportSpecifier where refers to a declare declaration (feat(transformer): eliminate ExportSpecifier where refers to a declare declaration #10356) (Dunqing)
• dfef8b5 transformer: Enable using by default (feat(transformer): enable using by default #10333) (Boshen)

Bug Fixes

• 9734152 ast: Handle TSThisType in TSTypePredicate (fix(ast): Handle TSThisType in TSTypePredicate #10328) (Yuji Sugiura)
• f3ddefb ast/estree: Add missing fields to AssignmentTargetRest in TS-ESTree AST (fix(ast/estree): add missing fields to AssignmentTargetRest in TS-ESTree AST #10456) (overlookmotel)
• 77b6f7e ast/estree: Fix start span of Program in TS-ESTree AST where first statement is @dec export class C {} (fix(ast/estree): fix start span of Program in TS-ESTree AST where first statement is @dec export class C {} #10448) (overlookmotel)
• 4817c7e ast/estree: Add fields to AssignmentTargetPattern in TS-ESTree AST (fix(ast/estree): add fields to AssignmentTargetPattern in TS-ESTree AST #10423) (overlookmotel)
• b3094b3 ast/estree: Add optional field to AssignmentTargetProperty in TS-ESTree AST (fix(ast/estree): add optional field to AssignmentTargetProperty in TS-ESTree AST #10412) (overlookmotel)
• a7fd30f ast/estree: Add fields to BindingRestElement in TS-ESTree AST (fix(ast/estree): add fields to BindingRestElement in TS-ESTree AST #10411) (overlookmotel)
• 9d82402 ast/estree: Fix Program span when contains no statements (fix(ast/estree): fix Program span when contains no statements #10408) (overlookmotel)
• cc07efd ast/estree: Fix JSXOpeningFragment (fix(ast/estree): Fix JSXOpeningFragment #10208) (therewillbecode)
• 48ed6a1 ast/estree: Fix span for TemplateElement in TS AST (fix(ast/estree): fix span for TemplateElement in TS AST #10315) (overlookmotel)
• 6d3734b ast_visit: Utf8ToUtf16Converter process decorators before class (fix(ast_visit): Utf8ToUtf16Converter process decorators before class #10449) (overlookmotel)
• 82ba30b codegen: Fix spaces before AssignmentTargetRest (fix(codegen): fix spaces before AssignmentTargetRest #10443) (overlookmotel)
• 2520b25 estree: Align TSMappedType fields (fix(estree): Align TSMappedType fields #10392) (Yuji Sugiura)
• 3ed3669 estree: Rename JSDocXxxType to TSJSDocXxxType (fix(estree): Rename JSDocXxxType to TSJSDocXxxType #10358) (Yuji Sugiura)
• b54fb3e estree: Rename TSInstantiationExpression.type_parameters to type_arguments (fix(estree): Rename TSInstantiationExpression.type_parameters to type_arguments #10327) (Yuji Sugiura)
• 48c711a minifier: Panic when compressing a ? b() : b() (fix(minifier): panic when compressing a ? b() : b() #10311) (翠 / green)
• 5850a0d parse: type x = typeof import('') -> TSTypeQuery(TSImportType) (fix(parse): type x = typeof import('') -> TSTypeQuery(TSImportType) #10317) (Boshen)
• 58ab8ff parser: Adjust class start position when decorators are involved (fix(parser): adjust class start position when decorators are involved #10438) (Boshen)
• 3d7bcac parser: Fix span position for + ++x (fix(parser): fix span position for + ++x #10429) (Boshen)
• f9fd666 parser: Report errors for duplicate extends/implements clauses(TS1172/1173/1175) (fix(parser): Report errors for duplicate extends/implements clauses(TS1172/1173/1175) #10420) (Yuji Sugiura)
• 385d009 parser: Correctly handle ? postfixed element type in TupleType (fix(parser): Correctly handle ? postfixed element type in TupleType #10390) (Yuji Sugiura)
• 41d8e9d parser: ExportNamedDeclaration.exportKind should be type for declare declaration (fix(parser): ExportNamedDeclaration.exportKind should be type for declare declaration #10389) (Yuji Sugiura)
• 4fe9151 parser: Handle JSDocUnknownType correctly (fix(parser): Handle JSDocUnknownType correctly #10363) (Yuji Sugiura)
• dd2aef0 semantic: Incorrect SymbolFlags of TSModuleDeclaration (fix(semantic): incorrect SymbolFlags of TSModuleDeclaration #10350) (Dunqing)
• c37f048 semantic: Do not declare a Symbol for an ModuleDeclaration where the id is not a BindingIdentifier (fix(semantic): do not declare a Symbol for an ModuleDeclaration where the id is not a BindingIdentifier #10343) (Dunqing)
• 17d26d9 transformer/decorator-metadata: Serialize type reference nodes causing imports cannot be removed (fix(transformer/decorator-metadata): serialize type reference nodes causing imports cannot be removed #10360) (Dunqing)
• 4e36b84 transformer/jsx: Do not report "duplicate __source/__self prop found" error when development is disabled (fix(transformer/jsx): do not report "duplicate __source/__self prop found" error when development is disabled #10393) (Dunqing)
• 1ff75bc transformer/module_runner: Hoist export (fix(transformer/module_runner): hoist export #10347) (hi-ogawa)
• e0b6c8c transformer/react: Correct comment (fix(transformer/react): correct comment #10323) (overlookmotel)
• 1e683f9 traverse: ChildScopeCollector visit all scopes (fix(traverse): ChildScopeCollector visit all scopes #10292) (overlookmotel)

Performance

• 426f8cb codegen: Reduce checks printing strings (perf(codegen): reduce checks printing strings #10341) (overlookmotel)
• 8db9dc5 minifier/minimize_statements: Reduce allocations of Vec (perf(minifier/minimize_statements): reduce allocations of Vec #10435) (Dunqing)
• 93b8e86 parser: Use ArenaVec to store decorators (perf(parser): use ArenaVec to store decorators #10437) (Dunqing)
• 0a42695 parser: Pass span starts (u32) around instead of Span (2x u32) (perf(parser): pass span starts (u32) around instead of Span (2x u32) #10433) (Boshen)
• ebe3496 transformer/class-properties: Return early if no private fields are found (perf(transformer/class-properties): return early if no private fields are found #10418) (Dunqing)
• 880647b transformer/decorator-metadata: Return Object as early as possible if there is a TSTypeReference within TSUnionType (perf(transformer/decorator-metadata): return Object as early as possible if there is a TSTypeReference within TSUnionType #10361) (Dunqing)
• 267922b transformer/jsx: Speed up decoding JSXText strings (perf(transformer/jsx): speed up decoding JSXText strings #9741) (overlookmotel)
• 25e4c53 transformer/object-rest-spread: Pass Box to make_object_spread (perf(transformer/object-rest-spread): pass Box to make_object_spread #10446) (overlookmotel)
• 595c5df transformer/object_rest_spread: Use ArenaVec to store values that will be used in constructing AST (perf(transformer/object_rest_spread): use ArenaVec to store values that will be used in constructing AST #10434) (Dunqing)

Documentation

• 63d4aa6 allocator: Fix quotes in comment (docs(allocator): fix quotes in comment #10353) (overlookmotel)
• c6f08d0 ast: Improve docs for AssignmentTargetRest (docs(ast): improve docs for AssignmentTargetRest #10442) (overlookmotel)

Refactor

• e4c80b4 allocator/vec2: Import handle_alloc_error function from allocator_api2 instead of writing a custom one (refactor(allocator/vec2): import handle_alloc_error function from allocator_api2 instead of writing a custom one #9860) (Dunqing)
• 192717c ast: ModuleDeclaration::with_clause return Option<&WithClause> (refactor(ast): ModuleDeclaration::with_clause return Option<&WithClause> #10441) (overlookmotel)
• 6e6c777 ast: Add TSEnumMemberName variant to replace computed field (refactor(ast): Add TSEnumMemberName variant to replace computed field #10346) (Yuji Sugiura)
• 294d24b ast/estree: Simplify serialization for JSXOpeningFragment (refactor(ast/estree): simplify serialization for JSXOpeningFragment #10316) (overlookmotel)
• a6b2232 parser: Shorten code (refactor(parser): shorten code #10445) (overlookmotel)
• 3ebd494 transformer/class-properties: Re-order fields and expand comments (refactor(transformer/class-properties): re-order fields and expand comments #10447) (overlookmotel)
• 7508a43 transformer/typescript: Remove unnecessary specific handling of TSModuleDeclaration transformation (refactor(transformer/typescript): remove unnecessary specific handling of TSModuleDeclaration transformation #10359) (Dunqing)
• 032377d transformer/typescript: Do not need to go through TSModuleDeclaration if is a NamespaceModule (refactor(transformer/typescript): do not need to go through TSModuleDeclaration if is a NamespaceModule #10366) (Dunqing)
• 4c14d0b transformer/typescript: Simplify TypeScriptAnnotations::has_value_reference method (refactor(transformer/typescript): simplify TypeScriptAnnotations::has_value_reference method #10349) (Dunqing)

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[github-actions]

Monitor Oxc

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

[codspeed-hq]

CodSpeed Instrumentation Performance Report

Merging #10459 will not alter performance

_{Comparing release/crates-1744855338 (1d2c34a) with main (82ba30b)}

Summary

✅ 36 untouched benchmarks