React PropTypes vs. Flow

Question

PropTypes and Flow cover similar things but are using different approaches. PropTypes can give you warnings during runtime, which can be helpful to quickly find malformed respon

Answer 1

I believe the missed point here is that Flow is a static checker while PropTypes is a runtime checker, which means

• Flow can intercept errors upstream while coding : it can theoretically miss some errors that you wont know about (if you didn't implemented flow enough in your project for example, or in case of deep nested objects)
• PropTypes will catch them downstream while testing, so it wont ever miss