brikz/brikz.js

function Brikz(api, apiKey, initKey) {
	var brikz = this, backup = {};
	apiKey = apiKey || 'exports';
	initKey = initKey || '__init__';

	function mixin(src, target, keys) {
		for (keys = keys || Object.keys(src), l=keys.length, i=0; i<l; ++i) {
			var value = src[keys[i]];
			if (typeof value !== "undefined") target[keys[i]] = value;
		}
		return target;
	}

	function forEach(c, fn) {
		Object.keys(c).forEach(function(k) { if (c[k]) fn(c[k], k, c); });
	}

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