/**

 * If run as a requestAnimationFrame callback, this

 * will be run at the start of the frame.

 */

function updateScreen(time) {

  // Make visual updates here.

}

requestAnimationFrame(updateScreen);

var dataSortWorker = new Worker("sort-worker.js");

dataSortWorker.postMesssage(dataToSort);

// The main thread is now free to continue working on other things...

dataSortWorker.addEventListener('message', function(evt) {

   var sortedData = evt.data;

   // Update data on screen...

});

var taskList = breakBigTaskIntoMicroTasks(monsterTaskList);

requestAnimationFrame(processTaskList);

function processTaskList(taskStartTime) {

  var taskFinishTime;

  do {

    // Assume the next task is pushed onto a stack.

    var nextTask = taskList.pop();

    // Process nextTask.

    processTask(nextTask);

    // Go again if there’s enough time to do the next task.

    taskFinishTime = window.performance.now();

  } while (taskFinishTime - taskStartTime < 3);

  if (taskList.length > 0)

    requestAnimationFrame(processTaskList);

}