Fake-Backend

Set defaultauth=fackbackend in the environment.ts file.
Also fill all the firebase credentials in the environment.ts file.
Now just uncomment the below fack-backend setup code in the app.module.ts file.

import { FakeBackendInterceptor } from './core/helpers/fake-backend';

if (environment.defaultauth === 'firebase') {
    initFirebaseBackend(environment.firebaseConfig);
} else {
    FakeBackendInterceptor;
}