Files
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
..

Oxc ESTree

ESTree compatibility layer for serialization and interoperability.

Overview

This crate provides compatibility with the ESTree AST specification, primarily for serialization purposes. It enables oxc AST nodes to be serialized to and from JSON in ESTree format, facilitating interoperability with other JavaScript tools.

Key Features

  • ESTree compatibility: Convert oxc AST to/from standard ESTree format
  • Serialization support: JSON serialization/deserialization via serde
  • Tool interoperability: Enable integration with ESTree-based tools
  • Optional feature: Only enabled when serialize feature is active

Usage

Architecture

ESTree Specification

ESTree is a community standard for representing JavaScript AST nodes. This crate ensures oxc's AST can be represented in this standard format while maintaining compatibility with the broader JavaScript tooling ecosystem.

Design Principles

  • Compatibility: Full compatibility with ESTree specification
  • Optional overhead: Only included when serialization is needed
  • Type safety: Maintains Rust's type safety during conversion
  • Performance: Efficient serialization with minimal overhead

Use Cases

  • IDE integration: Language servers communicating via JSON
  • Tool interoperability: Working with Babel, ESLint, and other ESTree tools
  • Data exchange: Transferring AST data between different systems
  • Debugging: Human-readable AST representation

When the serialize feature is disabled, this crate provides only a placeholder trait to support derive macros without overhead.