A more diplomatic MooTools Array

array.js

// A more diplomatic MooTools Array

// If in node or something
var MArray = require('mootools-array');

// API to define methods
MArray.define('each', function (fn, bind){
  // use this, just like we do now
  for (var i = 0, l = this.length; i < l; i++){
    if (i in this) fn.call(bind, this[i], i, this);
  }
});

var handler = function (number){ console.log(number) };

// Generic
MArray.forEach([1,2,3], handler);

// augment native Array
MArray.augment();

// Use it like we do now
[1,2,3].forEach(handler);

// or maybe do it opposite, by default, augment natives
// and then add a safeMode that undoes what it did
MArray.safeMode();

There's some argument over mutable proto at mozilla, which is the key to FuseBox.