prototype extensions with ember-cli

Question

Using ember-cli and its ES6 module transpiler how and where would one define this so that would apply to all Arrays in my App:

Array.prototype.move = function (old_index, new_index) {
  ....
};

Answer 1

You have a few options.

1. Add a file to the vendor/ directory with your extensions and include it in your Brocfile.js like so:

   app.import('vendor/my-prototype-extensions.js');
   

2. Do it in an initializer.

   ember g initializer extensions
   

   Then in app/initializers/extension.js add your extensions like so

   export var initialize = function() {
     Array.prototype.move = function (old_index, new_index) {
       ....
     };
   }
   
   export default {
     name: 'extensions',
     initialize: initialize
   }
   

I personally prefer the initializer approach as it's being done in the ember-cli ecosystem so you have access to anything available there if you need it.