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How to Validate TSX Code - Step by Step Guide

Step 1

Input Your TSX Code

Get your TSX code ready for validation! Whether you're checking TypeScript React components, debugging type-safe code, or catching errors before deployment, you have several convenient options:

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Paste directly: Copy your TypeScript React component or TSX code and paste it into the input editor
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Upload a file: Click "Upload" to select a .tsx, .ts, or .txt file from your computer
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Try the sample: Click "Sample" to load example TypeScript React code and see validation in action
Step 2

Instant Validation & Error Detection

Watch as the validator analyzes your TSX code in real-time! The validator checks for:

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Syntax errors: Unclosed tags, missing brackets, invalid TypeScript syntax
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TSX-specific issues: class vs className, for vs htmlFor, onclick vs onClick
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Common mistakes: Missing key props, inline style strings, invalid imports
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Line numbers: Exact location of each error and warning for quick fixes
Step 3

Review Results & Fix Issues

Get detailed validation results with actionable error messages:

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Clear error messages: User-friendly descriptions of what went wrong
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Line-by-line feedback: Know exactly where to fix issues in your code
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Copy errors: Export all errors and warnings for documentation or team sharing
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Format after fixing: Use the TSX Formatter to beautify your corrected code

Frequently Asked Questions

What does the TSX validator check for?

The validator checks for TypeScript syntax errors, TSX-specific issues (className vs class, htmlFor vs for), unclosed tags, missing brackets, invalid imports, missing key props in lists, inline style strings, and camelCase event handler errors. It provides line numbers and detailed error messages for each issue.

Does it validate TypeScript types and interfaces?

Yes! The validator uses Babel parser with TypeScript support to check syntax including type annotations, interfaces, generics, and TypeScript-specific features. It catches syntax errors in type definitions and ensures your TSX code follows TypeScript React standards.

What's the difference between errors and warnings?

Errors are critical issues that will prevent your TSX from compiling or running (syntax errors, unclosed tags, invalid TypeScript). Warnings are best practice violations that won't break your code but should be fixed (using class instead of className, missing key props, inline style strings).

Can I use this to validate React components before deployment?

Absolutely! This validator is perfect for quick checks before committing code or deploying. However, for production workflows, use TypeScript compiler (tsc) and ESLint which provide comprehensive type checking and linting. This tool is great for quick validation and learning.

Does it work with React Hooks and modern TypeScript?

Yes! The validator fully supports modern TypeScript React including Hooks (useState, useEffect with types), functional components with generics, React.FC types, custom hooks, and all ES6+ TypeScript features. It validates the latest TypeScript React patterns.

Is the TSX validator free?

Yes, completely free with no limitations on file size or usage frequency. No registration required, and you can validate unlimited TSX files with detailed error reporting. Perfect for TypeScript React developers of all levels!

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