Function scheduler

lib/test/angular/1.4.3/angular-animate.js:263–269

(tasks)

  var cancelFn;

  function scheduler(tasks) {
    // we make a copy since RAFScheduler mutates the state
    // of the passed in array variable and this would be difficult
    // to track down on the outside code
    tickQueue.push([].concat(tasks));
    nextTick();
  }

  /* waitUntilQuiet does two things:
   * 1. It will run the FINAL `fn` value only when an uncancelled RAF has passed through