How to get "access_token," using OAuth 2.0 on Node.js with React?

Question

JavaScript

I have the values ​​"authorization_code" which comes to me when the user allows access to the calendar.
SCOPE = " https://www.googleapis.com/auth/calendar ";

Answer 1

Google api has always had clumsy documentation, but this dock can be customized, starting from the sixth point:
https://developers.google.com/identity/sign-in/web...