How to protect the paths?

Question

Node.js

There is a React application and a server with express.js + mySQL.
Task: to allow only those users who are authorized in the application to access the paths.
Tried to use Passport.js, but with each call it resets the authorization.
Grateful for any hint.

Answer 1

Private route in react-router

Answer 2

Tried to use Passport.js, but with each call it resets the authorization.

this is the right way, understand why it "resets authorization"
and in general it is not clear how your users log in to the application if there is no authorization support on the server.