Anyone know how to get the Firebase unique id? I've tried name(), name, key, key(). Nothing works.

I am able to see the data but I have no idea how to get the id back. I need it.

//Create new customers into firebase 

function saveCustomer(email) {



  firebase.database().ref('/customers').push({

    email: email

  });



  firebase.database().ref('/customers').on(value, function(snapshot) {

    console.log(snapshot.val());

    console.log(snapshot.value.name());

  }, function(errorObject) {

    console.log(The read failed:  + errorObject.code);

  });





}