ASYNC TASKS

async-tasks let you run tasks asynchronously in a simple way with the ability to make dependencies between them.

Install

$ npm install --save async-tasks

Usage

var asyncTasks = require('async-tasks');

var tasks = asyncTasks();

tasks

.do(function (args, index, done) {
    setTimeout(function (){
        console.log('task 1 is done');
        done();
    }, 2000);
})

.do(function (args, index, done) {
    console.log('task 2 is done');
    done();
})

.wait()

.do(function (args, index, done) {
    console.log('task 3 is done after waiting for tasks 1 & 2 to finish');
    done();
})
//start tasks 1 & 2 asynchronously and wait till they finish then continue and run task 3
.start(function () {
    console.log('all tasks are done');
});

//task 2 is done
//task 1 is done
//task 3 is done after waiting for tasks 1 & 2 to finish

API

.do(function, [args])

add a task to the tasks list

function

Type:function(args, index, done)

Parameters

args: the passed argument on (asyncTask.do).

index: the function index (its order among tasks).

done: the function that needs to be called when the task is done.

.wait([before], [after])

Cause the tasks added after wait() to wait till the tasks before it finish.

before

Type: function

called on start waiting.

after

Type: function

called on finish waiting.

Note: consecutive wait called are squashed into one wait.

.start([function])

start added tasks asynchronously

function

The callback function, which is called when all tasks are done.

Type: function(error)

error: error returned by the running tasks if they encounter an error

License

MIT © Ahmed AlSahaf