mirror of https://github.com/oxc-project/oxc.git synced 2026-09-14 19:36:11 +08:00

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History

oxc-guard 894c8f9cd8 release(crates): oxc v0.148.0 (#26198 )

### 💥 BREAKING CHANGES

- a31567a allocator: [**BREAKING**] Make `Allocator::cursor_ptr` and `data_end_ptr` private (#26081) (overlookmotel)

### 🚀 Features

- 784e9fa minifier: Invert `!0` and `!1` in place for boolean context to `1` and `0` (#26050) (Armano)
- 1e902cc minifier: Expand fold leading assignments into the var decl (#26142) (Armano)
- 3ed4f6a minifier: Expand de morgan's optimization to allow move of `!` (#25930) (Armano)
- 5672585 parser: Attach all comments to nodes (#25944) (camc314)

### 🐛 Bug Fixes

- 4adfb4c semantic: Validate chained continue labels (#26157) (camc314)
- b874f48 ecmascript: `Math.round` only exact half ties (#26150) (camc314)
- a625378 minifier: Coerce omitted `indexOf` search argument (#26149) (camc314)
- dc7398b ecmascript: Trim trailing whitespace in string to number (#26148) (camc314)
- 243b685 transformer/object-rest: Lower multiple declarators correctly (#26147) (camc314)
- dc09a3a parser: Avoid panic on escaped string export names (#26146) (camc314)
- e412cf2 linter: Clamp invalid JS plugin locations (#26144) (camc314)
- c3dedc9 semantic: Skip function body bindings in parameters (#26099) (Dunqing)
- e74de61 transform-react: Match Babel diagnostic reporting (#26128) (Boshen)
- d5163d0 parser: Correctly classify unapplied pure annotations (#26084) (camc314)
- 8531b9b linter/plugins: Alter method for obtaining mutable `Program` when sending AST to JS plugins (#26077) (overlookmotel)
- 9b51658 regular_expression: Allow oversized decimal escape for Annex B (#26070) (leaysgur)
- c8de4df regular_expression: Reject oversized backreferences (#26055) (camc314)

### ⚡ Performance

- ac4785a diagnostics: Use fixed ANSI styles (#26130) (Boshen)
- 07a0793 packages/codegen: Flatten output in chunks (#26109) (overlookmotel)
- 487427a packages/codegen: Faster string flattening (#26108) (overlookmotel)
- 7785583 packages/codegen: Ensure indent strings are flattened (#26107) (overlookmotel)
- 0dd4db3 packages/codegen: Store mapping positions in an `Int32Array` (#26085) (overlookmotel)

2026-09-01 08:15:07 +00:00

src

fix(rust): address nightly deprecations (#25998 )

2026-08-22 11:34:02 +00:00

Cargo.toml

release(crates): oxc v0.148.0 (#26198 )

2026-09-01 08:15:07 +00:00

CHANGELOG.md

release(crates): oxc v0.147.0 (#26046 )

2026-08-24 11:19:12 +00:00

README.md

…

README.md

Oxc Syntax

Common JavaScript and TypeScript syntax definitions and utilities.

Overview

This crate provides shared syntax definitions, constants, and utilities used across the oxc toolchain. It contains fundamental types and enums that represent JavaScript and TypeScript language constructs.

Key Features

Syntax constants: Keywords, operators, and language tokens
AST utilities: Common patterns and helper functions for AST manipulation
Identifier validation: ECMAScript identifier checking and utilities
Operator precedence: Precedence tables for expression parsing
Module records: Import/export relationship tracking

Key Components

Architecture

Design Principles

Shared definitions: Avoid duplication across oxc crates
Type safety: Use newtypes for different kinds of IDs
Performance: Efficient representations for common operations
Standards compliance: Follow ECMAScript specifications

Core Components

Language Constants

Keywords: All JavaScript/TypeScript reserved words
Operators: Binary, unary, and assignment operators
Tokens: Punctuation and special symbols

AST Utilities

Node flags: Metadata about AST nodes (computed properties, etc.)
Traversal helpers: Common patterns for walking AST trees
Type guards: Runtime type checking for AST nodes

Semantic Types

IDs: Type-safe identifiers for nodes, symbols, scopes, references
Flags: Bitfield metadata for semantic entities
Relationships: Parent-child and reference relationships

Module System

Import/Export tracking: Comprehensive module dependency analysis
Resolution: Module specifier resolution utilities
Metadata: Module type and format information

Integration

This crate serves as the foundation for:

Parser: Uses syntax definitions during tokenization
Semantic: Leverages ID types and flags for analysis
Linter: References operator precedence and keyword tables
Transformer: Uses module records for import/export handling

The syntax crate ensures consistency and type safety across all oxc components.