function Brikz(api) {
	var brikz = this, backup = {};

	function mixin(s, t, k) {
		for (k=k||Object.keys(s), l=k.length, i=0; i<l; ++i) t[k[i]]=s[k[i]];
		return t;
	}

	Object.defineProperties(this, {
		ensure: { value: null,
			enumerable: false, configurable: true, writable: true},
		rebuild: { value: function () {
			var oapi = mixin(api, {}), obrikz = mixin(backup, {});
			mixin({}, api, Object.keys(api)); backup = {};
			brikz.ensure = function (key) {
				var b = brikz[key], bak = [];
				while (typeof b === "function") b = new b(brikz, api, bak);
				if (b === bak) { b = obrikz[key]; mixin(oapi, api, bak); }
				return brikz[key] = backup[key] = b;
			}
			Object.keys(brikz).forEach(function (key) { brikz.ensure(key); });
			brikz.ensure = null;
		}, enumerable: false, configurable: true, writable: false }});
}