https://github.com/lovetingyuan/ty-step

简单的异步流程控制工具
https://github.com/lovetingyuan/ty-step

async flow-control step ty-step

Last synced: 4 months ago
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简单的异步流程控制工具

• Host: GitHub
• URL: https://github.com/lovetingyuan/ty-step
• Owner: lovetingyuan
• License: mit
• Created: 2017-02-12T14:24:09.000Z (over 8 years ago)
• Default Branch: master
• Last Pushed: 2017-03-21T08:38:42.000Z (about 8 years ago)
• Last Synced: 2025-02-04T07:36:46.806Z (4 months ago)
• Topics: async, flow-control, step, ty-step
• Language: JavaScript
• Homepage:
• Size: 19.5 KB
• Stars: 0
• Watchers: 3
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

        
# ty-step

[![travis-ci](https://travis-ci.org/lovetingyuan/ty-step.svg?branch=master "CI")](https://travis-ci.org/lovetingyuan/ty-step)

[![Version](https://img.shields.io/npm/v/ty-step.svg "version")](https://www.npmjs.com/package/ty-step)

[![Dependencies](https://david-dm.org/lovetingyuan/ty-step/status.svg "dependencies")](https://david-dm.org/lovetingyuan/ty-step)

[![License](https://img.shields.io/npm/l/ty-step.svg "License")](https://github.com/lovetingyuan/ty-step/blob/master/LICENSE)

简单的异步流程控制，可以以并行或串行的方式执行给定的函数序列，支持参数传递和错误捕获

Inspired by [`step`](https://github.com/creationix/step) and [`gulp-sequence`](https://github.com/teambition/gulp-sequence)

---------

## Install

`npm install ty-step` or ``

## Usage

```javascript

var step = require('ty-step') // or window.step for browsers

var af = function (time) {

  return function (next, payload) {

    setTimeout(function () {

      next(null, time)

    }, time)

  }

}

var task = step(af(200), af(100), [af(150), af(80), af(250)], af(400), af(50))

task(function (err, payload) {

  if (err)

    console.error(err)

  else

    console.log(payload) // payload = [200, 100, [80, 150, 250], 400, 50]

})

```

`step`接收一系列的函数或者由函数组成的数组作为参数，这些函数代表要执行的任务，接收`next`和`payload`作为参数。`next`在任务结束时调用，传入的参数为`error`和`data`，`error`代表上一个函数是否发生了错误，若不为`null`则表示发生了错误，会中断执行后续函数，`data`表示上一个函数中`next`传递的结果。`step`返回一个`thunk`函数，传递的`callback`表示对最终结果的处理，同样接收`error`和`data`作为参数

## License

**MIT**