Define Angular.JS controller as a header file

angular_header.js

# app/application.js
# require_tree app/controllers

angular.module('myApp').controller('fooCtrl', ctrlImpl);

function ctrlImpl () {
  "use strict";
  
  var ctrl = myApp.ctrlHeader;
  
  init();
  
  return ctrl;
  
  function init() {
    ctrl.foo = "hello";
    
    ctrl.asfd = [1,2,3];
    
    someService.get().then(function(response) {
      ctrl.yada = response;
    });
  }
  
  function bar() {
    return "world";
  }
  
  function kung() {
    return "kung";
  }
    
  function fu() {
    return "fu";
  }
}

ctrl.js

# app/controllers/ctrl.js

var myApp.ctrlHeader = {
  foo: null,
  asdf: [],
  yada: {},
  bar: bar,
  kung: kung,
  fu: fu
};