JSX to TSX Converter
Transpile client components safely from legacy JavaScript JSX formats into structured TSX files with prop definitions and React hook generic structures.
Key Features
Automatic Component Typer
Convert older React JSX components into type-safe TSX layouts without writing types by hand. The converter reads how your components use different props and initial parameters, then generates clean TypeScript type definitions automatically. This turns normal variables into clear, structured rules, helping you avoid mistakes when loading components in page layouts. It makes updating your components fast and completely worry-free.
React State Typer
Create TypeScript types for your React state variables like useState and useRef hooks automatically. The engine looks at the default values you set (for example, a number like 0 or a text string) and guesses the correct type, giving you clean code validation and autocomplete help in your code editor. It follows how you use state across functions to write exact configurations.
Props to Interface Converter
Turn old PropTypes declarations into clean TypeScript interface specifications. The parser reads your prop definitions (like text strings, numbers, true/false values, and actions) and converts them into TypeScript rules, correctly handling optional and required properties. This converts checks that happen when the code runs into static checks before compilation, which helps make files load faster and render better.
Class Component Typer
Convert variables and class method declarations in older React class components. The tool sets up prop and state rules, updates method arguments, and checks that everything is safe in your class components. It maps lifecycle methods and class variables into structured TypeScript definitions to make updating your codebase a breeze.
Instant Error Checker
Find syntax errors as you clean up your component folders. The editor checks your code grammar, reviews javascript logic, and highlights missing imports or incorrect tags, helping you fix issues before you run the compiler. The built-in checker shows alerts with exact line details, making code troubleshooting simple and fast.
Space Formatter
Format your output code with clean spacing, standard quotation marks, and proper tab margins, giving you clean TSX code that is ready to save. The formatting system gets rid of extra blank lines, groups imports nicely, and aligns brackets to match modern React coding styles.
Safe Browser Processing
Keep your code and components completely secure. All code parsing, interface creation, and conversions run locally inside your web browser. No files or code are sent to external servers. Your source files and type declarations remain private, keeping you safe from data leaks or code theft.
Simple History Tracker
Manage your conversions with keyboard shortcuts and history logs. Reverse mistakes with undo and redo actions, copy output with one click, or save your code as .tsx files. The history panel lists your previous conversions, allowing you to compare formatting modifications step-by-step.
Usage Examples
import PropTypes from 'prop-types';
const UserCard = ({ name, age, active }) => (
<div>{name} ({age}) - {active ? 'Active' : 'Offline'}</div>
);
UserCard.propTypes = {
name: PropTypes.string.isRequired,
age: PropTypes.number,
active: PropTypes.bool
};interface UserCardProps {
name: string;
age?: number;
active?: boolean;
}
const UserCard: React.FC<UserCardProps> = ({ name, age, active }) => (
<div>{name} ({age}) - {active ? 'Active' : 'Offline'}</div>
);Common Use Cases
React Codebase Migration
Convert legacy React codebases to TypeScript systematically. Paste old component files into the converter to output typed interfaces and components, resolving linting issues and speeding up team migrations. This ensures component inputs are compiled safely, helping developers migrate repositories without breaking live environments or deployment scripts. It handles multiple files smoothly and lets you transition your projects piece by piece without needing a full rewrite all at once.
Ensuring Code Quality
Ensure code quality across inherited libraries. Convert untyped components to TSX to verify props configurations, catch layout issues, and ensure type safety before code gets pushed to main branches. Standardizing type rules simplifies component maintenance and improves codebase safety, preventing compiler errors during integrations. It makes it easy to find where old components are missing props or receiving incorrect values.
Standardizing Props Interfaces
Generate clean TypeScript interfaces from legacy PropTypes configurations. Establish standard documentation and type rules, improving editor autocompletion and team development speeds. It parses nested shapes and arrays, outputting clean interface blocks that developers can extend for styling presets, making it easier for new developers to understand the component properties.
How It Works
Paste Your JSX Code
Paste your legacy JSX file, select local files, or import code snippets. The compiler initializes buffers and prepares for AST parsing, checking characters and component headers.
Analyze Code Structure
The parser analyzes the component structure, event handlers, and PropTypes to build a syntax map, highlighting warnings and structural errors. It compiles variable scopes recursively.
Generate Types & Interfaces
The type generator maps PropTypes, variables, and hooks to equivalent TypeScript definitions, creating typed prop interfaces and type parameters. It resolves optionals and required variables.
Format and Output TSX
Format converted output with clean spacing and tab configurations. Copy code to your clipboard or download files as .tsx. All operations run locally inside the browser sandbox, keeping component logic private.
Frequently Asked Questions
The converter scans your code for PropTypes declarations and how you destructure props inside your components. It maps PropTypes properties directly to TypeScript types. If a prop does not have any validation rule, the tool marks it as optional to ensure your code builds without errors. It looks at objects and arrays to suggest detailed type interfaces, making code updates quick and easy.
The converter translates those PropTypes into clean TypeScript interfaces. It then strips out the old imports and assignment blocks so you do not have useless packages in your component files. This keeps your files smaller and cleans up your project dependencies.
Yes. It looks at the initial values you pass to useState to figure out basic data types like string, number, or boolean. For arrays or null values, it adds simple generic placeholders (like any[] or null) that you can easily customize to fit your exact data structure. This ensures your state variables are typed correctly.
The tool converts class signatures into React.Component<Props, State> structures, creates type interfaces, and sets up state variables to ensure they are safe under TypeScript rules. It formats constructors, class properties, methods, and render functions to build smoothly.
No. Conversions, parsing, and formatting run entirely in your web browser. Your private code is kept secure, avoiding server leaks or third-party tracking.
Yes. Once the web app loads in your browser, the tool works completely offline. All processing happens in browser memory, keeping your code safe and avoiding any internet transfers.
Converting JSX to TSX helps you catch coding errors early during development instead of when users are using the application. TypeScript checks your prop configurations and warns you if you pass the wrong data to a component. This makes code easier to read, improves autocompletion, and helps your team build features faster.
The converter supports common React hooks like useState, useEffect, useRef, useMemo, and useCallback. It helps you declare types for these hooks automatically, making your code easier to maintain and reducing compiler warnings.
Yes. The generated code is regular TypeScript code that you can copy and edit. If the tool generates a generic placeholder type like any, you can easily change it to a custom type that fits your application structure.
Yes, it supports React Native components. Because React Native uses standard JSX structure, the converter can parse components, views, and styles, converting them into typed TSX files in the exact same way as React web components.