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oxc-guard 5a6e37e5cf release(crates): oxc v0.150.0 (#26632 )

### 🚀 Features

- ca649e0 ecma: Define math constants as known globals and resolve their types (#26585) (Armano)
- 9ef028c codegen: Add `ascii_only` option (#25994) (Samuel Attard)
- 80a76a0 minifier: Negate binary comparison for `typeof x < 'u'` (#26367) (Armano)

### 🐛 Bug Fixes

- 8ca76da parser: Reject `accessor` modifiers on methods (#26617) (camc314)
- 1916f31 parser: Reject `readonly` modifier on constructors (#26612) (camc314)
- 1c42008 parser: Handle escaped let in for loops (#26583) (camc314)
- d21d5cf parser: Recognize annotated empty arrows in conditionals (#26537) (camc314)
- d7713ad parser: Classify Unicode line breaks in block comments (#26536) (camc314)
- 75cd919 transformer: Preserve receivers in private optional chains (#26535) (camc314)
- b32d25d parser: Reject escaped import-phase keywords (#26534) (camc314)
- 47b8311 parser: Recognize contextual binding names in type lookaheads (#26532) (camc314)
- d6b6705 parser: Require arrow separator in TypeScript function types (#26529) (camc314)
- e98beef parser: Disambiguate await using in for initializers (#26527) (camc314)
- 92afee6 parser: Allow parenthesized JSX comma expressions with preserve_parens=false (#26524) (camc314)
- 31508b1 parser: Reject return types on constructor overloads (#26523) (camc314)
- a091fc4 parser: Validate await context for await using declarations (#26495) (camc314)
- 5501e86 parser: Disallow in expressions in using for-loop initializers (#26490) (camc314)
- c8e5fa7 parser: Allow escaped type names in import and export specifiers (#26487) (camc314)
- 2dcee2f parser: Reject async modifiers on class fields (#26486) (camc314)
- 973d58e parser: Require comma after TypeScript this parameter (#26480) (camc314)
- 32d00c5 codegen: Preserve instantiation expression precedence (#26424) (camc314)
- cfa47ab parser: Allow `in` expressions in class static blocks (#26423) (camc314)
- 5986187 packages/codegen: Preserve private-in right operand precedence (#26420) (camc314)
- f8e6c6c packages/codegen: Preserve in restriction through yield arguments (#26421) (camc314)
- d61e3bf parser: Validate TS named tuple rest elements (#26419) (camc314)
- ae6c386 codegen: Preserve in restriction through yield arguments (#26413) (camc314)
- 42ac916 codegen: Preserve private-in right operand precedence (#26411) (camc314)
- 10521b2 parser: Allow escaped type default import bindings (#26409) (camc314)
- 72cb5e3 parser: Reject rest parameters in getters (#26400) (camc314)
- 6e15ad5 packages/codegen: Print matching quoted import names as identifiers (#26404) (camc314)
- bbbb4bc packages/codegen: Preserve private-in left operand precedence (#26403) (camc314)
- a111b5b packages/codegen: Print accessibility modifiers before abstract (#26402) (camc314)
- 4e76602 parser: Allow `in` in arrow block bodies within `for` initializers (#26395) (camc314)
- b20fc19 parser: Reject partially parenthesized mixed coalesce expressions (#26394) (camc314)

### ⚡ Performance

- 1f902a6 isolated_declarations: Key scope maps by `Ident` (#26380) (Dunqing)
- a242469 minfiier: Reduce allocs when creating indirect access (#26601) (Armano)
- 5b4787f minifier: Update chain expressions in place (#26544) (Armano)
- 0bc1661 minifier: Try merging before creating new expression statements (#26556) (Armano)
- c78d707 minifier: Process newly created stmt in handle_if_statement (#26541) (Armano)
- 029c84b minfier: Update expressions in place when substituting alternate syntax (#26460) (Armano)
- d198982 codegen: Outline postfix source mapping work (#26450) (camc314)
- 53f006e ecmascript: Format small integer literals with itoa (#26446) (camc314)
- 8bfb8c0 codegen: Avoid duplicate sourcemap name lookups (#26441) (camc314)

### 📚 Documentation

- 38533ac ast: Move type annotation span comment to span field (#26522) (camc314)

2026-09-14 11:25:40 +00:00

src

feat(ast): add GetNodeId trait (#26145 )

2026-09-02 15:35:26 +00:00

Cargo.toml

release(crates): oxc v0.150.0 (#26632 )

2026-09-14 11:25:40 +00:00

CHANGELOG.md

release(crates): oxc v0.149.0 (#26397 )

2026-09-07 14:29:34 +00:00

README.md

…

README.md

Oxc AST Macros

Procedural macros for generating AST-related code and ensuring memory layout consistency.

Overview

This crate provides procedural macros that generate boilerplate code for AST nodes, ensuring consistent memory layout and providing derived traits automatically.

Key Features

#[ast] attribute: Marks types as AST nodes and generates required traits
Memory layout control: Ensures #[repr(C)] for predictable memory layout
Trait derivation: Automatically derives common traits like Debug, Clone, etc.
Code generation: Reduces boilerplate and ensures consistency across AST types

What the `#[ast]` Macro Does

Adds #[repr(C)]: Ensures predictable memory layout across platforms
Marker for tooling: Identifies types as AST nodes for code generation tools
Trait derivation: Automatically implements common traits
Consistency: Ensures all AST nodes follow the same patterns

Architecture

This macro system enables:

Maintainable AST: Reduces boilerplate across hundreds of AST types
Consistent layout: Critical for performance and correctness
Tool integration: Allows oxc_ast_tools to generate visitor code
Type safety: Ensures all AST nodes have required traits

The macros are designed to be transparent and generate minimal, efficient code.

README.md

Oxc AST Macros

Overview

Key Features

What the #[ast] Macro Does

Architecture

What the `#[ast]` Macro Does