Introduction

//Replace firebase values with your app api values import firebase from ‘firebase’;

componentWillMount() {

firebase.initializeApp({
  apiKey: "yourAPIKey",
  authDomain: "authDomainNAme",
  databaseURL: "yourDomainBaseURL",
  projectId: "yourProjectID",
  storageBucket: "storageBUcketValue",
  messagingSenderId: "senderIdValue"
});

firebase.auth().signInWithEmailAndPassword(email, password)

.then(this.onLoginSuccess)
})

}