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Another great tutorial. One small tweak: change the generate service command from:

$ ionic g service services/authentication


$ ionic g service services/authenticate

So it matches up with the AuthenticateService name you use for the rest of the tutorial.

(There is also one mention of the original file path right after the generate command)

I would make a small change to allow for trailing whitespace in the email which is often inserted automatically by the phone keyboard.
Change the email REGEX in the login and register page to:
Validators.pattern(‘^[a-zA-Z0-9_.+-][email protected][a-zA-Z0-9-]+.[a-zA-Z0-9-.]+\\s*$’)
Then change the “” on the authentication service to “”

AbdulAzeez Olanrewaju

Thank you very much. how can we implement onAuthStateChanged() function, because when you refresh, the Your {{userEmail}} = undefined. but it is still logged in

Hi, thanks for the amazing tutorial. Saved my life ♥

great article thnak you

Where I find the registered email addresses and password?

Great article! I have one doubt: if after successful login (with email or some OAuth provider) I need to integrate with a backend, I have to call firebase on all my requests on backend or I can check once and issue a JWT token and use that token for the other calls?
Keeping in mind I don’t want to use other firebase’s services, just Auth.