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ty-step

v1.0.1

Published

简单的异步流程控制方法,可以并行和串行执行给出的方法序列,适用于nodejs和浏览器环境

Downloads

14

Readme

ty-step

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 and gulp-sequence


Install

npm install ty-step

Usage

var step = require('ty-step')
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nextpayload作为参数。next在任务结束时调用,传入的参数为errordataerror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返回一个函数,该函数接收一个callback作为参数,表示对最终结果的处理,同样接收errordata作为参数

License

MIT