Merge multiple connect middlewares into a single middleware that calls them in order

merge-connect.coffee

connect_middlewares = (fns...) -> (req, res, out) ->
  curr = 0
  do next = (err=null) ->
    return out err if err? or not fn = fns[curr++]
    fn req, res, next

merge-connect.js

function connect_middlewares() {
  var fns = arguments
  return function(req, res, out) {
    var fn, curr = 0;
    (function next(err) {
      (err || !(fn = fns[curr++]))
        ? out(err)
        : fn(req, res, next)
    })()
  }
}


// Example: app.use(connect_middlewares(middleware1, middleware2, middleware3))

// This is the same as using `app.use(connect(middleware1, ...))`, but more lightweight