release(crates): v0.48.0

[oxc-bot]

[0.48.0] - 2025-01-24

• 54d0fac span: [BREAKING] Remove PartialEq impl for &Atom (refactor(span)!: remove PartialEq impl for &Atom #8642) (overlookmotel)

Features

• 2a2ad53 allocator: Add Allocator::capacity and used_bytes methods (feat(allocator): add Allocator::capacity and used_bytes methods #8621) (overlookmotel)
• 6801c81 allocator: Add Allocator::new and with_capacity methods (feat(allocator): add Allocator::new and with_capacity methods #8620) (overlookmotel)
• 99607d3 codegen: Print comments in TSTypeLiteral (feat(codegen): print comments in TSTypeLiteral #8679) (Boshen)
• 4ae568e linter: Add DiagnosticResult to the Reporters for receiving a sub part result (feat(linter): add DiagnosticResult to the Reporters for receiving a sub part result #8666) (Alexander S.)
• 343690e minifier: Replace Number.*_SAFE_INTEGER/Number.EPSILON (feat(minifier): replace Number.*_SAFE_INTEGER/Number.EPSILON #8682) (sapphi-red)
• 0c5bb30 minifier: Replace Number.POSITIVE_INFINITY/Number.NEGATIVE_INFINITY/Number.NaN (feat(minifier): replace Number.POSITIVE_INFINITY/Number.NEGATIVE_INFINITY/Number.NaN #8681) (sapphi-red)
• 835b258 minifier: Compress typeof foo === 'object' && foo !== null to typeof foo == 'object' && !!foo (feat(minifier): compress typeof foo === 'object' && foo !== null to typeof foo == 'object' && !!foo #8638) (sapphi-red)
• 2bcbed2 minifier: Compress (a = b) === null || a === undefined to (a = b) == null (feat(minifier): compress (a = b) === null || a === undefined to (a = b) == null #8637) (sapphi-red)

Bug Fixes

• 40316af linter: Fix github endColumn output (fix(linter): fix github endColumn output #8647) (Alexander S.)
• 883d25b minifier: Keep esm in dce (fix(minifier): keep esm in dce #8677) (Boshen)
• 878ce10 minifier: void 0 equals to undefined (fix(minifier): void 0 equals to undefined #8673) (Boshen)
• ba201a6 minifier: Remove "non esbuild optimizations" which is incorrect (fix(minifier): remove "non esbuild optimizations" which is incorrect #8668) (Boshen)
• 8c8b5fa minifier: Avoid minifing String(a) into "" + a for symbols (fix(minifier): avoid minifing String(a) into "" + a for symbols #8612) (翠 / green)
• 4ff6e85 minifier: Remove expression statement void 0 (fix(minifier): remove expression statement void 0 #8602) (Boshen)
• 93d643e minifier: Keep side effects when folding const conditional exprs (fix(minifier): keep side effects when folding const conditional exprs #8591) (camc314)
• 178c232 parser: Parse intrinsic TS keyword (fix(parser): parse intrinsic TS keyword #8627) (Kevin Deng 三咲智子)
• 48717ab parser: Parse true as TSLiteralType (fix(parser): parse true as TSLiteralType #8626) (Kevin Deng 三咲智子)
• d1c5dc4 semantic: Fix const assertions in UnresolvedReferencesStack (fix(semantic): fix const assertions in UnresolvedReferencesStack #8653) (overlookmotel)

Performance

• 787aaad allocator: Make String non-drop (perf(allocator): make String non-drop #8617) (overlookmotel)
• d966e0a codegen: Do not check for comments if turned off (perf(codegen): do not check for comments if turned off #8598) (Boshen)
• 3fa87ff lexer: Peak 2 bytes after ! (perf(lexer): peak 2 bytes after ! #8662) (Boshen)
• 9953ac7 minifier: Add LatePeepholeOptimizations (perf(minifier): add LatePeepholeOptimizations #8651) (Boshen)
• 00dc63f minifier: Only substitute typed array constructor once (perf(minifier): only substitute typed array constructor once #8649) (Boshen)
• 3e19e4e minifier: Remove the useless empty statement removal code in statement fusion (perf(minifier): remove the useless empty statement removal code in statement fusion #8646) (Boshen)
• 5b3c412 minifier: Only run optimizations on local changes (perf(minifier): only run optimizations on local changes #8644) (Boshen)

Documentation

• c1d243b allocator: Improve docs for Allocator (docs(allocator): improve docs for Allocator #8623) (overlookmotel)
• 01a5e5d allocator: Improve docs for HashMap (docs(allocator): improve docs for HashMap #8616) (overlookmotel)
• 87568a1 allocator: Reformat docs (docs(allocator): reformat docs #8615) (overlookmotel)
• 3be0392 lexer: Fix doc comment (docs(lexer): fix doc comment #8664) (overlookmotel)
• 5029547 semantic: Fix and reformat doc comments (docs(semantic): fix and reformat doc comments #8652) (overlookmotel)

Refactor

• ae8db53 allocator: Move Allocator into own module (refactor(allocator): move Allocator into own module #8656) (overlookmotel)
• 0f85bc6 allocator: Reduce repeat code to prevent Drop types in arena (refactor(allocator): reduce repeat code to prevent Drop types in arena #8655) (overlookmotel)
• de76eb1 allocator: Reorder Box methods (refactor(allocator): reorder Box methods #8654) (overlookmotel)
• 997859c ast: Align #[estree(via)] behavior (refactor(ast): align #[estree(via)] behavior #8599) (sapphi-red)
• db863a3 codegen: Use Stack for binary_expr_stack (refactor(codegen): use Stack for binary_expr_stack #8663) (Boshen)
• 8cce69a codegen: Remove match_member_expression (refactor(codegen): remove match_member_expression #8597) (Boshen)
• a3dc4c3 crates: Clean up snapshot files (refactor(crates): clean up snapshot files #8680) (Boshen)
• e66da9f isolated_declarations, linter, minifier, prettier, semantic, transformer: Remove unnecessary ref / ref mut syntax (refactor(isolated_declarations, linter, minifier, prettier, semantic, transformer): remove unnecessary ref / ref mut syntax #8643) (overlookmotel)
• 23b49a6 linter: Use cow_to_ascii_lowercase instead cow_to_lowercase (refactor(linter): use cow_to_ascii_lowercase instead cow_to_lowercase #8678) (Boshen)
• ce2b9da minifier: Remove wrap_to_avoid_ambiguous_else (refactor(minifier): remove wrap_to_avoid_ambiguous_else #8676) (Boshen)
• 75a579b minifier: Clean up has_no_side_effect_for_evaluation_same_target (refactor(minifier): clean up has_no_side_effect_for_evaluation_same_target #8675) (Boshen)
• 1bb2539 minifier: Move more code into minimize_conditions local loop (refactor(minifier): move more code into minimize_conditions local loop #8671) (Boshen)
• 13e4a45 minifier: Move conditional assignment to minimize_conditions (refactor(minifier): move conditional assignment to minimize_conditions #8669) (Boshen)
• ae895d8 minifier: Use NonEmptyStack for function stack (refactor(minifier): use NonEmptyStack for function stack #8661) (Boshen)
• 3802d28 minifier: Clean up try_minimize_conditional (refactor(minifier): clean up try_minimize_conditional #8660) (Boshen)
• dcc1f2b minifier: Rename ast_passes to peephole (refactor(minifier): rename ast_passes to peephole #8635) (Boshen)
• 52458de minifier: Remove unused code and traits (refactor(minifier): remove unused code and traits #8632) (Boshen)
• 6f95cd5 minifier: Remove all the unnecessary fake ast passes (refactor(minifier): remove all the unnecessary fake ast passes #8618) (Boshen)
• 712cae0 minifier: Run the compressor on all test cases (refactor(minifier): run the compressor on all test cases #8604) (Boshen)
• 864b8ef parser: Shorten code (refactor(parser): shorten code #8640) (overlookmotel)
• b8d9a51 span: Deal only in owned Atoms (refactor(span): deal only in owned Atoms #8641) (overlookmotel)
• 20f52b1 span: Remove unnecessary lifetimes on Atom impls (refactor(span): remove unnecessary lifetimes on Atom impls #8639) (overlookmotel)
• ac4f98e span: Derive Copy on Atom (refactor(span): derive Copy on Atom #8596) (branchseer)
• a730f99 transformer: Move create_prototype_member to utils module (refactor(transformer): move create_prototype_member to utils module #8657) (Dunqing)
• 61d96fd transformer/class-properties: Correct comments (refactor(transformer/class-properties): correct comments #8636) (overlookmotel)

Testing

• 39dbd2d codegen: Fix snapshot file (test(codegen): fix snapshot file #8685) (Boshen)
• d9f5e7f minifier: Enable passed esbuild tests (Boshen)

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[github-actions]

Monitor Oxc

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

[codspeed-hq]

CodSpeed Performance Report

Merging #8686 will not alter performance

_{Comparing release/crates-1737691406 (e1eace1) with main (39dbd2d)}

Summary

✅ 32 untouched benchmarks