middlewares

install

npm install --save middlewares

basic usage

var m = new Middlewares()

m.use(function(obj, next) {
  // do stuff
  next()
})

m.use(function(obj, next) {
  // do stuff
  next()
})

m.use(function(obj, next) {
  // do stuff
  next()
})

m.execute({'hello': 'world'}, function(err) {
  // done
})

any number of arguments

var m = new Middlewares()

m.use(function(obj1, obj2, obj3, next) {
  // do stuff
  next()
})

m.use(function(obj1, obj2, obj3, next) {
  // do stuff
  next()
})

m.use(function(obj1, obj2, obj3, next) {
  // do stuff
  next()
})

m.execute({}, {}, {}, function(err) {
  // done
})

an error terminates the chain

var m = new Middlewares()

m.use(function(obj, next) {
  // do stuff
  next()
})

m.use(function(obj, next) {
  // do stuff
  next(new Error('eh'))
})

m.use(function(obj, next) {
  // Will not be executed
  next()
})

m.execute({}, function(err) {
  console.log(err.message) // 'eh'
})

pass an optional context to avoid creating closures

var m = new Middlewares()

this.doStuff = function(obj, next) {
  this.isUseful
  next()
}

m.use(this.doStuff, this)

m.execute({'hello': 'world'}, function(err) {
  // done
})

export a wrapper

var m = new Middlewares()

m.use(function(obj, next) {
  // do stuff
  next()
})

m.use(function(obj, next) {
  // do stuff
  next()
})

var func = m.export()

func(obj, function(err) {
  // do stuff
})