React to TypeScript Definitions Generator

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library 3.1.1 ·javascript maintenance
verified May 27, 2026

react-to-typescript-definitions is a development tool that generates TypeScript declaration files (`.d.ts`) directly from React component source code. It analyzes React components, their PropTypes (including `any`, `array`, `bool`, `func`, `number`, `object`, `string`, `node`, `element`, `oneOfType`, `arrayOf`, `symbol`, `shape`), and JSDoc comments to infer their type definitions. The library supports both ES6/ES7 class components and can handle modern JavaScript features like optional chaining. It offers both a command-line interface (CLI) for direct file processing and an API for programmatic use, allowing integration into build pipelines. The current stable version is 3.1.1, released in April 2021, and its development appears to be in a maintenance phase. It provides a crucial bridge for projects transitioning from JavaScript with PropTypes to TypeScript, automatically creating type information for existing component libraries, though its reliance on PropTypes ties it to an older React pattern.

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