Program-imperative-flavor.js

var bindP = function(promise, f) {
  input.then(function(x) {
    return f(x);
  });
};

//ok, this is better
var bindP = function(promise, f) {
  input.then(f);
};

var pipeP = function(starting_promise, functions) {
  for (var i = 0, n = functions.length; i < n; i++) {
    starting_promise = bind(starting_promise, functions[i]);
  }
  return starting_promise;
};

var sequenceP = function(){  //list of functions as arguments
    var fnlist_as_args = arguments;
    return function(starting_promise){
        return pipeP(starting_promise,fnlist_as_args);
    };
}