About This Tool
Documentation
What does this tool do?
A comprehensive JS/TS code formatter. Standardizes indentation, enforces semicolon policies, normalizes single/double quotes, formats JSX attributes, manages trailing commas, formats arrow function parameters, and highlights syntax errors with line/column pointers.
When should you use it?
Use this tool to format messy or unformatted JavaScript/TypeScript snippets, clean up code copied from external sources, and ensure consistent code style across engineering teams.
Key Capabilities & Features
Highlights
JavaScript (ES6+ / ES2024), TypeScript, and JSX/TSX syntax validation using AST parsing
Code formatting with customizable indentation, semicolon rules, and quotes
Instant detection of syntax errors, missing brackets, unhandled promises, and illegal tokens
Static code quality checks and unused variable warnings
One-click copy to clipboard and formatted .js / .ts file download