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

refactor(diagnostics): clean up vendored renderer (#25501 )

2026-08-11 12:57:08 +00:00

Cargo.toml

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

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

CHANGELOG.md

release(crates): oxc v0.141.0 (#24714 )

2026-07-21 16:09:41 +01:00

README.md

docs(span): remove Atom from README (#20836 )

2026-03-29 12:23:36 +00:00

README.md

Oxc Span

Source position utilities and span management for precise error reporting.

Overview

This crate provides essential utilities for managing source positions and spans in JavaScript and TypeScript code. It enables precise error reporting, source mapping, and location-aware transformations across all oxc tools.

Key Features

Precise positions: Accurate byte-level source positions
Span utilities: Source ranges with start and end positions
Source type detection: Automatic language and module detection
Content comparison: Semantic equality for AST nodes

Architecture

Span System

Byte positions: All positions are UTF-8 byte offsets
Inclusive ranges: Spans include start position, exclude end position
Efficiency: Uses u32 for positions, supporting files up to 4GB
Precision: Enables precise error highlighting and source maps

Source Type System

The source type encodes important metadata:

Language: JavaScript vs TypeScript
Module system: ESM vs Script
JSX support: JSX vs plain syntax
Variant: Standard vs definition files (.d.ts)

Integration Points

Parser: Creates spans during tokenization and parsing
Semantic: Tracks spans for all symbols and references
Linter: Uses spans for precise error reporting
Codegen: Maintains spans for source map generation
Transformer: Preserves spans during AST manipulation

This crate provides the foundation for precise source location tracking throughout the oxc toolchain.