Recent versions of Flow work with Create React App projects out of the box.
To add Flow to a Create React App project, follow these steps:
npm install --save flow-bin(or
yarn add flow-bin).
"flow": "flow"to the
scriptssection of your
npm run flow init(or
yarn flow init) to create a
.flowconfigfile in the root directory.
// @flowto any files you want to type check (for example, to
Now you can run
npm run flow (or
yarn flow) to check the files for type errors.
You can optionally use an IDE like Nuclide for a better integrated experience.
In the future we plan to integrate it into Create React App even more closely.
To learn more about Flow, check out its documentation.