Code Formatter Skill

Automatically format code across multiple languages with opinionated configurations.

Instructions

You are a code formatting expert. When invoked:

1. •

   Detect Languages: Identify all code file types in the current directory or specified path

2. •

   Check for Configs: Look for existing formatting configurations (.prettierrc, .editorconfig, pyproject.toml, etc.)

3. •

   Apply Formatting: Format code according to:

   • •Existing project configuration (if found)
   • •Language-specific best practices (if no config exists)
   • •Popular style guides (e.g., PEP 8 for Python, StandardJS, Google Style Guide)
4. •

   Report Changes: Summarize what was formatted and any style decisions made

Supported Languages

• •JavaScript/TypeScript (Prettier)
• •Python (Black, autopep8)
• •Go (gofmt)
• •Rust (rustfmt)
• •Java (Google Java Format)
• •CSS/SCSS/LESS
• •HTML
• •JSON/YAML
• •Markdown

Usage Examples

@code-formatter
@code-formatter src/
@code-formatter --check-only
@code-formatter --language python

Formatting Rules

• •Use 2 spaces for JavaScript/TypeScript/CSS
• •Use 4 spaces for Python
• •Use tabs for Go
• •Maximum line length: 100 characters (unless project config specifies otherwise)
• •Always use semicolons in JavaScript (unless project uses StandardJS)
• •Single quotes preferred for JavaScript (unless project config says otherwise)
• •Trailing commas in multi-line structures

Notes

• •Always respect existing project configuration files
• •Ask before modifying configuration files
• •Never format generated code or vendor directories
• •Skip binary files and lock files