ESLint Rule Checker

Check JavaScript and TypeScript code against common linting rules with auto-fix support

ESLint Rule Checker

Check JavaScript and TypeScript code against common linting rules with auto-fix support

Auto-lint

TypeScript

Configuration

Rule Configuration

Core ESLint recommended rules

Custom Rules (JSON)

Override or add custom ESLint rules in JSON format

Drop JavaScript/TypeScript files here or click to select

Supported formats: .js, .ts, .jsx, .tsx

JavaScript/TypeScript Code

No Results

Run the linter to see results here.

No Fixed Code

Apply fixes to see the corrected code here.

About ESLint Rules

This tool performs client-side linting using simplified versions of common ESLint rules:
• Recommended: Core ESLint rules for catching common errors
• Airbnb: Popular style guide with formatting rules
• Strict: Additional rules for code quality and complexity
All processing happens in your browser - no code is sent to servers.