How To Automatically Delete A User In Firebase?

CODE: app.js setInterval(function() { console.log('1'); var pendingRef = admin.database().ref('pending'); var now = Date.now(); var cutoff = now - 1 * 60 * 60 * 10

Solution 1:

There is no delete method on the snapshot. Instead, you should just call remove on the snapshot's ref:

var listener = old.on('child_added', function (snapshot) {
  console.log("EXECUTING...");
  console.log("A VALUE:" + snapshot.val());
  snapshot.ref
    .remove()
    .catch(function (error) {
      console.log("USER WAS NOT DELETED:" + snapshot.key);
    });
});

To delete the user account - in addition to the user data you have stored - you also need to call the deleteUser method (as you are running this on Node using firebase-admin):

var listener = old.on('child_added', function (snapshot) {
  console.log("EXECUTING...");
  console.log("A VALUE:" + snapshot.val());
  snapshot.ref
    .remove()
    .then(function () {
      return admin.auth().deleteUser(snapshot.key);
    })
    .catch(function (error) {
      console.log("USER WAS NOT DELETED:" + snapshot.key);
    });
});