gistfile1.js

Discourse.debouncePromise = function(func, wait) {
  var timeout = null;

  return function() {
    var context = this;
    var args = arguments;

    // Return a promise that is never executed
    if (timeout) return Ember.Deferred.create();

    return Ember.Deferred.promise(function(promise) {
      timeout = Em.run.later(function () {
        timeout = null;
        promise.resolve(func.apply(context, args));
      }, wait);
    });
  }

}