default object-iterator for ES6

gistfile1.js

if (!(Symbol.iterator in Object.prototype)) {
	Object.defineProperty(Object.prototype,Symbol.iterator,{
		enumerable: false,
		writable: false,
		configurable: true,
		value: function() {
			var o = this;
			var idx = -1;
			var ks = Object.keys(o);
			return {
				next: function() {
					var v = o[ks[++idx]];
					return { done:(idx === ks.length), value: v };
				}
			};
		}
	});
}

gistfile2.js

if (!(Symbol.iterator in Object.prototype)) {
	Object.defineProperty(Object.prototype,Symbol.iterator,{
		enumerable: false,
		writable: false,
		configurable: true,
		// thanks to: https://twitter.com/juandopazo/status/436298238464122880
		value: function*() {
			var o = this;
			var ks = Object.keys(o);
			for (var idx = 0, length = ks.length; idx < length; idx++) {
				yield o[ks[idx]];
			}
		}
	});
}

Turns out this was decided to NOT be in by default, but of course one could do the above, or a variation which attaches directly to an object that you want to iterate over.