Supported Languages

linthis supports 18 programming languages with automatic language detection.

Language Support Matrix

Language	Checker Tool	Formatter Tool	Extensions
Rust	clippy	rustfmt	.rs
Python	ruff, pylint, flake8	ruff, black	.py, .pyi
TypeScript	eslint	prettier	.ts, .tsx
JavaScript	eslint	prettier	.js, .jsx, .mjs, .cjs
Go	golangci-lint	gofmt	.go
Java	checkstyle	clang-format	.java
C	clang-tidy, cppcheck	clang-format	.c, .h
C++	clang-tidy, cpplint, cppcheck	clang-format	.cpp, .cc, .cxx, .hpp, .hh, .hxx
Objective-C	clang-tidy	clang-format	.m, .mm
Swift	swiftlint	swift-format	.swift
Kotlin	ktlint, detekt	ktlint	.kt, .kts
Lua	luacheck	stylua	.lua
Dart	dart analyze	dart format	.dart
Shell	shellcheck	shfmt	.sh, .bash, .zsh, .ksh
Ruby	rubocop	rubocop	.rb, .rake, .gemspec
PHP	phpcs	php-cs-fixer	.php, .phtml
Scala	scalafix	scalafmt	.scala, .sc
C#	dotnet format	dotnet format	.cs, .csx

Language Detection

linthis automatically detects languages based on file extensions. You can also explicitly specify languages:

# Auto-detect (default)
linthis

# Specify single language
linthis --lang python

# Specify multiple languages
linthis --lang python,rust,javascript

Tool Installation

Each language requires its underlying tools to be installed. Click on the language name above to see specific installation instructions.

Quick Install Commands

# Rust
rustup component add clippy rustfmt

# Python
pip install ruff

# JavaScript/TypeScript
npm install -g eslint prettier

# Go
go install github.com/golangci/golangci-lint/cmd/golangci-lint@latest

# Shell
brew install shellcheck shfmt  # macOS
apt install shellcheck         # Ubuntu/Debian

See It in Action

Watch the Multi-Language video tutorial for a 15-second demo.

Checking Tool Availability

Use the doctor command to check which tools are available:

linthis doctor

This will show the status of all required tools for each language.