Oxc Linter

High-performance ESLint-compatible linter for JavaScript and TypeScript.

Overview

This crate provides a fast, ESLint-compatible linting engine with comprehensive rule support. It leverages oxc's high-performance AST and semantic analysis to deliver significantly faster linting than traditional tools.

Key Features

• ESLint compatibility: Drop-in replacement for most ESLint workflows
• High performance: 50-100x faster than ESLint on large codebases
• Comprehensive rules: Supports most popular ESLint rules and plugins
• TypeScript support: Full TypeScript linting with type-aware rules
• Plugin system: Extensible architecture for custom rules

Architecture

Rule System

• Rule categories: Correctness, Suspicious, Pedantic, Style, etc.
• Configurable severity: Error, Warning, or Off for each rule
• Auto-fixing: Many rules can automatically fix issues
• Plugin support: Load external rule collections

Performance Design

• Single AST pass: Most rules run in a single traversal
• Efficient analysis: Leverages oxc's semantic analysis
• Parallel execution: Process multiple files concurrently
• Memory efficiency: Uses arena allocation for optimal performance

ESLint Compatibility

• Configuration format: Supports ESLint config files
• Rule parity: Implements behavior-compatible versions of popular rules
• Plugin ecosystem: Compatible with many ESLint plugins
• Migration path: Easy transition from ESLint to oxlint

The linter is designed to be both a standalone tool and a library component for integration into other development tools.