mid.js

A lightweight flow control for Node and Browsers. Similar to async.js but more than enjoyable API :).

Installation

npm install mid.js --save

Examples

Didn't use any flow control:

setTimeout(function(){
    var a = doSomething()
    setTimeout(function(){
        doSomething2(a)
        setTimeout(function(){
            console.log('done')
        }, 1000)
    }, 1000)
}, 1000)

use mid.js

var mid = require('mid.js')
 
mid('sync')
    .use(function(next){
        setTimeout(function(){
            var a = doSomething()
            next(a)
        }, 1000)
    })
    .use(function(a, done){
        setTimeout(function(){
            doSomething(a)
            done()
        }, 1000)
    })
    .done(function(){
        setTimeout(function(){
            console.log('done')
        }, 1000)
    })

async

var mid = require('mid.js')
 
mid('async')
    .use(function(){
        $.ajax({})
    })
    .use(function(){
        $.ajax({})
    })
    .once(function(){
        // here will trigger when all async process done
    })

in loop:

var mid = require('../mid')
var masync = mid('async')
 
for(var i = 0; i < 2; i++){
    masync.use(function(done){
        setTimeout(function (){
            done()
        }, 1000)
    })
}
 
masync.once(function (){
    console.log('done')
})

API

mid(['async'|'sync'])

set run use functions as async or sync

use([function(...args, next)])

process functions for async or sync. The behavior like Express.js middleware.

done([function])

invoking when ecah processes done.

once([function])

invoking once when all async process done.