crates_v0.149.0

asheshgoplani/agent-deckcrates_v0.149.0Sep 7, 2026by github-actions[bot]

AI Summary

Oxc parser update featuring breaking changes in return types and length limits, alongside performance optimizations for the minifier and parser.

Key Highlights

  • Renaming of `panicked` to `fatal_error` in `ParserReturn`.
  • Reduction of `MAX_LEN` to 256 bytes.
  • Shrinking of annotation comment ranges in the parser.
  • Use of `Ident` for property mangling to improve performance.

Breaking Changes

  • Rename `panicked` to `fatal_error` in `ParserReturn`.
  • Reduce `MAX_LEN` to 256 bytes.

New Features

  • Distinguish unapplied no-side-effects comments.
  • Add `GetNodeId` trait to AST.
  • Construct `ArenaHashSet` with any `Default` hasher.

Full Release Notes

### ๐Ÿ’ฅ BREAKING CHANGES

- 66744f0 parser: [**BREAKING**] Rename `panicked` to `fatal_error` in `ParserReturn` (#26382) (overlookmotel)
- 2c9a947 parser: [**BREAKING**] Reduce `MAX_LEN` to 256 bytes below `u32::MAX` (#26352) (overlookmotel)

### ๐Ÿš€ Features

- 32bdc5b allocator: Construct `ArenaHashSet` with any `Default` hasher (#26372) (Dunqing)
- a17de58 minifier: Process of return/throw in non last position and fix async * inlining (#26214) (Armano)
- bfb4c57 parser: Distinguish unapplied no-side-effects comments (#26120) (็ขณ่‹ฏ Carbon)
- 1d9b9d3 ast: Add `GetNodeId` trait (#26145) (camc314)

### ๐Ÿ› Bug Fixes

- b156333 codegen: Order accessibility before abstract on accessors (#26392) (camc314)
- 116c8b8 transformer/class-properties: Keep private methods in class-expression scope (#26308) (Changsu Seong)
- 1400a0f parser: Require a string source after `export ... from` (#26389) (camc314)
- 2da73b7 codegen: Print matching quoted import names as identifiers (#26386) (camc314)
- 0a81d29 codegen: Preserve private-in left operand precedence (#26383) (camc314)
- 9a02337 parser: Correctly round large nondecimal literals (#26379) (camc314)
- 3d95477 transformer: Gate async-only rewrites by owning transform (#26326) (Dunqing)
- f45a9ee transformer: Limit arguments capture to lowered async functions (#26317) (Dunqing)
- 789969f transformer: Gate this capture by owning async transform (#26227) (Dunqing)
- affeb14 minifier: Mangle class private members in Node API (#26118) (็ขณ่‹ฏ Carbon)
- 8b35abd semantic: Detect duplicate private class elements (#26361) (camc314)
- 457ed57 semantic: Reject await and yield in rest parameter defaults (#26359) (camc314)
- 4b89c7b semantic: Reject jumps across arrow functions (#26357) (camc314)
- c966aca parser: Do not omit `<` token opening type argument list (#26328) (overlookmotel)
- f07dca5 ast_visit: Add the trimmed prefix length to translation table offsets (#26173) (Bharadwaj Pendyala)
- 3ab9bd1 parser: Do not re-lex template substitution tail after fatal error (#26230) (overlookmotel)
- 07851b9 parser: Fix debug assert failure when lexer error with tokens enabled (#26229) (overlookmotel)
- 00dea7a allocator: Gate `Allocator::data_end_ptr` behind fixed_size feature (#26248) (camc314)
- 853ffab ecmascript: Avoid `charAt` panic on 32-bit (#26244) (camc314)
- 34feccb runtime: Remove stale regenerator exports (#26243) (camc314)

### โšก Performance

- 34a242e minifier: Use `Ident` for property mangler (#26334) (sapphi-red)
- 5303f5c minifier: Unify merging of last expression into target sequence (#26264) (Armano)
- 2ca7d29 minifier: Consume nodes in minimize_statements in reverse order (#26258) (Armano)
- d2354b4 mangler: Use `Ident` for variable names to keep (#26333) (sapphi-red)
- 5b3e335 minifier: Use `Ident` instead of `Str` in `KeepVar` (#26332) (sapphi-red)
- 51366fb minifier: Use `IdentHashSet` in `PrivateMemberUsageStack` (#26331) (sapphi-red)
- d19c42a minifier: Merge nested if stmt in place instead of creating dummies (#26351) (Armano)
- 356def6 parser: Shrink annotation comment ranges (#26356) (overlookmotel)
- a5be474 parser: Shave instruction off `parse_jsx_element_name` (#26355) (overlookmotel)
- 9780663 parser: Remove fatal error guard from `parse_jsx_element_name` (#26354) (overlookmotel)
- 766e12f parser: Remove `token` field from `LexerCheckpoint` (#26350) (overlookmotel)

### ๐Ÿ“š Documentation

- d4b4e61 transformer: Document ES2015 target floor (#26378) (Dunqing)
- 67dd054 ast_visit: Correct out-of-date comments on `Utf8ToUtf16` converter (#26285) (overlookmotel)
- a8ed2a7 minifier: Fix stale validation instructions (#26251) (camc314)