Javascript Dependency Injector

javascript_dependency_injector.js

(function() {
  window.JDI = window.JDI || {};
  
  /*
    JDI.register - register a module on the "JDI" global
    Usage:
      with a namespace:    JDI.register("foo", {bar: myFunc}) => JDI.foo.bar = myFunc
      without a namespace: JDI.register({bar: myFunc}) => JDI.bar = myFunc
  */
  JDI.register = function(){
    var root = window.JDI,
      mod = arguments[0];

    // if there is an optional namespace defined
    if(arguments.length === 2){
      var namespace = arguments[0];
      root[namespace] = root[namespace] || {};
      root = root[namespace];
      mod = arguments[1];
    }

    for (var prop in mod) {
      if (mod.hasOwnProperty(prop)) {
        root[prop] = mod[prop];
      }
    }
  };
})();


// Examples:
JDI.register( {
  blah: "blah!",
  foo: function() {}
});

console.log(JDI.blah);
JDI.foo();

JDI.register("myModule", {
  bar: "bar!",
  shoo: function() {}
});

console.log(JDI.myModule.bar);
JDI.myModule.shoo();