dart pub global activate flutterfire_cli

npm install -g firebase-tools

firebase login

flutterfire config > --project=fir-auth-b17bc
--out=lib/firebase_options.dart
--ios-bundle-id=com.example.authentication
--macos-bundle-id=com.example.authentication
--android-app-id=com.example.authentication

-- When you use Phone Sign in you should create SHA certificate fingerprints on Firebase so write at this command to create SHA Key =>

keytool -list -v -keystore ~/.android/debug.keystore -alias androiddebugkey -storepass android -keypass android

-- To run For Web use this command

flutter run -d chrome --web-hostname localhost --web-port 5000

-- For android update your version kotlin

https://kotlinlang.org/docs/releases.html#release-details

for SSH Facebook

keytool -exportcert -alias androiddebugkey -keystore ~/.android/debug.keystore | openssl sha1 -binary | openssl base64