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crates_v0.135.0

oxc-project/oxccrates_v0.135.0Jun 8, 2026by github-actions[bot]

AI Summary

This release integrates the Rust port of the React Compiler. It adds `#[non_exhaustive]` to AST nodes and introduces strict parsing rules for TypeScript features like `super.#field` and `abstract` private fields.

Key Highlights

  • Rust port of React Compiler integration
  • AST nodes marked as `#[non_exhaustive]`
  • Strict parsing for private fields (`super.#field`) and abstract private fields
  • Performance optimizations in parser (peeking instead of lookahead)

Breaking Changes

  • Add `#[non_exhaustive]` to AST nodes
  • Add `AstBuilder::template_element_escape_raw` methods

New Features

  • Integrate the Rust port of the React Compiler
  • Report TS1255 for invalid class definite assertions
  • Make building the class table optional, off by default

Full Release Notes

### 💥 BREAKING CHANGES

- ee4dc73 ast: [**BREAKING**] Add `#[non_exhaustive]` to AST nodes (#23046) (overlookmotel)
- 4c35362 ast: [**BREAKING**] Add `AstBuilder::template_element_escape_raw` and `template_element_escape_raw_with_lone_surrogates` methods (#23047) (overlookmotel)

### 🚀 Features

- b846ab2 react_compiler: Integrate the Rust port of the React Compiler (#22942) (Boshen)
- 5b8dd68 parser: Report TS1255 for invalid class definite assertions (#22917) (camc314)
- 85efabf semantic: Make building the class table optional, off by default (#22862) (Boshen)

### 🐛 Bug Fixes

- 556acdc codegen: Parenthesize TS-cast assignment targets (#23112) (Boshen)
- 37169ff codegen: Don't emit space between postfix `--` and `>` when minifying (#23036) (Boshen)
- a4b1bf7 codegen: Drop redundant whitespace in minified TypeScript output (#23038) (Boshen)
- cf53285 parser: Report reserved type-declaration names in the parser (#23035) (Boshen)
- 4e44969 ast: Fix UB in `escape_template_element_raw` (#23052) (overlookmotel)
- c543154 parser: Report comma operator in JSX expression in the parser (#23030) (Boshen)
- 325c94f codegen: Tighten conditional-type and constructor-type whitespace when minifying (#23033) (Boshen)
- 95dd3a2 parser: Report `import type` alias to a non-external reference in the parser (#23032) (Boshen)
- 90180b8 codegen: Drop space after `:` in function return type when minifying (#23028) (Boshen)
- 6da876e parser: Report `abstract` private class field in the parser (#23029) (Boshen)
- 28467ce codegen: Don't emit space before a postfix update operand when minifying (#23027) (Boshen)
- cb29926 codegen: Drop redundant space after `export default` when minifying (#23024) (Boshen)
- 62965ae codegen: Drop redundant space after `else` when minifying (#23025) (Boshen)
- 989230a parser: Report compound assignment to non-simple target in the parser (#23022) (Boshen)
- 06f367c parser: Report `super.#field` private access in the parser (#23014) (Boshen)
- 184edef codegen: Print space before `const`/`declare` enum modifier (#23013) (Boshen)
- 4d722e0 parser: Report duplicate switch `default` clause in the parser (#23012) (Boshen)
- 597ed85 codegen: Parenthesize `let`/`async` for-of head target (#23008) (Boshen)
- 8b631bf codegen: Remove stray space before mapped type value colon (#23010) (Boshen)
- c08407e codegen: Don't over-parenthesize `in` inside an arrow in a for-init (#23009) (Boshen)
- 600cd6f codegen: Parenthesize lower-precedence `TSInstantiationExpression` operand (#23007) (Boshen)
- 187e1a5 codegen: Don't leak space after comment-only JSX expression container (#23006) (Boshen)
- 294c473 codegen: Don't over-parenthesize `TSTypeAssertion` operand (#23004) (Boshen)
- 786d96f codegen: Give `TSTypeAssertion` unary precedence (#23002) (Boshen)
- 1295882 parser: Report `new.target` and `import.meta` syntax errors in the parser (#23003) (Boshen)
- d727b6b codegen: Parenthesize `await` expression as base of `**` (#23001) (Boshen)
- 67dfa08 codegen: Keep parentheses around `new` callees containing a call (#22997) (Boshen)
- 17e7cf3 parser: Disallow unerasable `as`/`satisfies` assertions (#22986) (Boshen)
- beb46d3 parser: Commit to module goal on decorated exports (#22941) (Boshen)
- 49e63f7 isolated-declarations: Require annotations for satisfies initializers (#22898) (camc314)
- 8c93601 isolated-declarations: Allow unknown enum initializer in non-const enum (#22900) (camc314)

### ⚡ Performance

- 7d89909 parser: Peek instead of lookahead for yield disambiguation (#23071) (Boshen)
- bf872f0 parser: Skip arrow lookahead for a parenthesized literal (#23070) (Boshen)
- d19fc54 parser: Guard type-argument speculation behind an angle-token check (#23069) (Boshen)
- 8eb5507 parser: Skip redundant member-rest re-scan on call entry (#23068) (Boshen)
- 883dfc1 parser: Skip parse_call_expression_rest when no call follows (#23063) (Boshen)
- b171153 parser: Peek before the await-using lookahead (#23059) (Boshen)
- 56f21bd parser: Use peek_token for the TS `asserts` type predicate (#23058) (Boshen)
- 68805ac parser: Use peek_token instead of checkpoint/rewind for single-token decisions (#23056) (Boshen)
- 1f9d8eb ast: `AstBuilder::template_element_escape_raw` avoid allocation if no escape required (#23053) (overlookmotel)
- 502b04d semantic: Move cold function redeclaration handling into `#[cold]` function (#22973) (overlookmotel)

### 📚 Documentation

- 275d318 napi/minifier: Point `target` to oxc docs (#23102) (camc314)