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* Specify types in package * Do not remove types file on eject * Stop copying types into generated project * Reference react and react-dom * Reference node types * Install node types as well * Restore copying * Add Node to the list of installed types * Reference Jest types * Remove jest types from install * Remove jest from CRA install * Remove Jest reference and let user do this themselves * Stop copying types file * Add types key to package.json * Add appTypeDeclarations and create when missing * Rename declarations file * Add Jest back to install instructions * Minimize diff
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id, title
| id | title |
|---|---|
| adding-typescript | Adding TypeScript |
TypeScript is a typed superset of JavaScript that compiles to plain JavaScript.
To add TypeScript to a Create React App project, first install it:
$ npm install --save typescript @types/node @types/react @types/react-dom @types/jest
$ # or
$ yarn add typescript @types/node @types/react @types/react-dom @types/jest
Next, rename any file to be a TypeScript file (e.g. src/index.js to src/index.tsx) and restart your development server!
Type errors will show up in the same console as the build one.
To learn more about TypeScript, check out its documentation.
Note: You are not required to make a
tsconfig.jsonfile, one will be made for you. You are allowed to edit the generated TypeScript configuration.
Note: We recommend using VSCode for a better integrated experience.
Note: Constant enums and namespaces are not supported.