test.js

var middleware = function() { ... }
    
var stack = middleware(function(data1, data2, next) {
 
}, function(data1, data2, next) {
    
}, function(data1, data2, next) {
    
});

stack.handle(data1,data2);

// Use middleware as a flow control alternative to Step and async and others

Step(
  function () { 
    // uses `this` instead of `next`
  },
  function () {
      
  },
  function () {
      
  }
);