How do I sign out users in Firebase 3.0?

Question

According to documentation, I force a user to sign out with the method signOut().

This is what I have tried:

var rootRef = firebase.database         


        

Answer 1

Extending the answer of @Frank van Puffelen, this code works like a charm, but promise rejection handling inside then() function as a second parameter is a bad practice.

Rather add a .catch(e) block.

Because, if error happens at signout() function then would be handled but if error happens at .then() block then it wont be handled.

Better code would be,

firebase.auth().signOut()
.then(() => {
  console.log('Signed Out');
})
.catch(e=>{
 console.error('Sign Out Error', e);
});