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crates_v0.128.0

oxc-project/oxccrates_v0.128.0Apr 27, 2026by github-actions[bot]

AI Summary

Core library updates focusing on AST size reduction and allocator performance optimizations.

Key Highlights

  • Reduced size of AST structs (TSTypePredicateName, JSXExpression, etc.)
  • Allocator performance optimizations
  • AST node_id accessors

Breaking Changes

  • Reduced size of TSTypePredicateName
  • Reduced size of JSXExpression
  • Reduced size of ArrayExpressionElement
  • Removed CommentNodeId

New Features

  • AST size reduction
  • Allocator performance improvements

Full Release Notes

### 💥 BREAKING CHANGES

- 502e804 ast: [**BREAKING**] Reduce size of `TSTypePredicateName` (#21711) (overlookmotel)
- 5651539 ast: [**BREAKING**] Reduce size of `JSXExpression` (#21710) (overlookmotel)
- c44e280 ast: [**BREAKING**] Reduce size of `ArrayExpressionElement` (#21709) (overlookmotel)
- c5b3deb syntax: [**BREAKING**] Remove `CommentNodeId` (#21679) (overlookmotel)

### 🚀 Features

- b738a39 allocator: Add `Allocator::cursor_ptr` method (#21773) (overlookmotel)
- 678767e ast: Generate node_id accessors for AST enum wrappers (#21653) (camc314)
- f091d77 minifier: Inline constant spread elements into arrays (#21095) (Armano)

### 🐛 Bug Fixes

- 0d608c2 minifier: Preserve raw CR in template literals (#21645) (Dunqing)
- a889ea9 minifier: Track pure functions in DCE mode (#21722) (Dunqing)
- 674dfac allocator: `Arena` retry allocation when chunk size approaches maximum (#21777) (overlookmotel)
- f130cc0 allocator: Fix arithmetic overflow in `Arena::new_chunk_memory_details` (#21745) (overlookmotel)
- b9bf239 allocator: Fix UB in `Arena::grow_zeroed` (#21739) (overlookmotel)
- d2b9389 allocator: Clippy warning when building without `testing` feature (#21681) (camc314)
- 503dc86 codegen: Map sourcemaps from visible output starts (#21662) (Dunqing)
- c92bd3b transformer: Use SPAN for synthesized helper calls to prevent comment misattribution (#21578) (Dunqing)
- 0d80441 codegen: Add mapping before printing `#` for private ident (#21619) (camc314)

### ⚡ Performance

- 9fa362e napi/parser: Do not generate tokens except in tests (#21811) (overlookmotel)
- 0044392 allocator: Reduce branches when allocating new chunk (#21776) (overlookmotel)
- 7896bd0 allocator: `Allocator::used_bytes` do not use chunk iterator (#21771) (overlookmotel)
- a5c562f allocator: Remove check in `Arena::new_chunk_memory_details` (#21750) (overlookmotel)
- 35bbe1f allocator: `Arena` use unchecked size round up where guaranteed no overflow (#21743) (overlookmotel)
- ffe229b allocator: Remove unnecessary check from `Arena::try_alloc_layout_slow_impl` (#21732) (overlookmotel)
- 72fece5 allocator: Use `NonNull::offset_from_unsigned` in `Arena::chunk_capacity` (#21731) (overlookmotel)
- cab32ae ast: Add `#[inline(always)]` to `node_id` methods on enums with all variants unboxed (#21707) (overlookmotel)
- b179688 parser: Allocate `TriviaBuilder` comments in the arena (#21512) (Boshen)
- 2290f31 lexer: Fix perf of `Token::set_*` methods on Rust 1.95.0 (#21659) (overlookmotel)
- 1b58029 allocator: Move code into cold path in `Arena::alloc_layout` (#21622) (overlookmotel)
- 3cf7cef allocator: Reduce instructions on allocation hot path (#21510) (overlookmotel)

### 📚 Documentation

- ce65070 data_structures: Document why `as_ref` and `as_mut` on `NonNullConst` and `NonNullMut` take `self` (#21800) (overlookmotel)
- 93b7dbd allocator: Improve doc comments for `ChunkFooter` (#21733) (overlookmotel)
- 295db8d transformer: Fix comment (#21717) (overlookmotel)
- 5c93af8 ast: Add comments explaining `#[inline(always)]` to `node_id` methods on enums (#21706) (overlookmotel)
- e4cea25 transform: Use the `node:` namespace in the example (#19998) (루밀LuMir)

### 🛡️ Security

- d8076c9 deps: Update rolldown (#21639) (renovate)