linthis

A fast, cross-platform multi-language linter and formatter written in Rust.

Installation

From PyPI (Python users)

# Using pip
pip install linthis

# Using uv (recommended)
uv pip install linthis

From crates.io (Rust users)

cargo install linthis

Features

• Single command for both linting and formatting
• Multi-language support (Rust, Python, TypeScript, JavaScript, Go, Java, C++)
• Auto-detection of project languages
• Configurable exclusion patterns
• Hierarchical configuration (built-in, user, project, CLI)
• Format presets (Google, Airbnb, Standard)
• Parallel file processing for performance

Usage

# Run both lint and format checks
linthis

# Lint only (no formatting)
linthis --check-only

# Format only (no linting)
linthis --format-only

# Specify files or directories
linthis src/main.rs src/lib.rs

# Check only staged files
linthis --staged

Configuration

Create .linthis.toml in your project root:

# Languages to check (omit for auto-detection)
languages = ["rust", "python"]

# Files to exclude
exclude = [
    "target/**",
    "node_modules/**",
    "*.generated.rs"
]

# Maximum cyclomatic complexity
max_complexity = 20

# Formatting preset
format_preset = "google"

Supported Languages

License

MIT