You can provide an interface for a React Component's Props and State via React.Component which will provide type-checking and editor auto-completing when working with that component in JSX. What does React Native + TypeScript look like The popular JavaScript framework Angular 2.0 is written in. If you have existing TypeScript code being ported to React Native, there are one or two caveats to using Babel instead of TypeScript. TypeScript is pure object oriented with classes, interfaces and statically typed like C or Java. This is the default behavior of tsc for newly created applications. We recommend that you use the TypeScript compiler only for type checking. Out of the box, TypeScript sources are transformed by Babel during bundling. JavaScript modules may still be imported by TypeScript modules, along with the reverse. jsx extension are treated as JavaScript instead of TypeScript, and will not be typechecked. React Native defaults new applications to TypeScript, but JavaScript may still be used. Run yarn tsc to type-check your new TypeScript files. index.js entrypoint file as it is otherwise you may run into an issue when it comes to bundling a production build.
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