How to fix error 'FB' is not defined no-undef on create-react-app project?

Question

I made the project using this link as my starting file.

https://github.com/facebookincubator/create-react-app

But after i tried to make Facebook login button

Answer 1

Based on what @dan-abramov stated in a comment to another answer:

Don't use FB, use window.FB

This way, you define explicitely where the variable FB needs to come from.