this is project is about running tasks one by one.
for eack banch of tasks, you need to create a task runner:
let chainTaskRunner = new ChainTaskRunner();
after that, you can push your task to the task runner:
let chainTask1 = new ChainTask(()->{ setTimeout(function(){chainTask1.end()}, 2000) });
chainTaskRunner.addTask(chainTask1);
but in your processer or your task, you need to call
yourTask.end()
to end the task, if you donot end the task manually, the task will keep running~!
for more detail, you can refer to example: ChainTaskTester.js