added some utilities to utils

src/utils.js

@@ -1,4 +1,4 @@
-import {mapObj} from './funky.js';
+import {forEach, mapObj} from './funky.js';
 
 export function noop() {};
 
@@ -43,6 +43,10 @@ export function hypotenuse(a, b) {
 	return Math.sqrt(a*a + b*b);
 }
 
+export function isObject (obj) {
+	return obj && (typeof obj === 'object') && !Array.isArray(obj) ? true : false;
+}
+
 export function random(min, max) {
 	if (Array.isArray(min)) {
 		return min[random(min.length - 1)];
@@ -126,3 +130,25 @@ export function getColor ({red, green, blue, alpha}) {
 		`rgb(${ red }, ${ green }, ${ blue })`;
 }
 
+export function extend (obj, ...sources) {
+	return Object.assign({}, obj, ...sources);
+}
+
+export function extendDeep (obj, ...sources) {
+	let extended = extend(obj);
+
+	sources.forEach(src => {
+		forEach(src, (value, key) => {
+			if (has(src, key)) {
+				if (isObject(value) && isObject(extended[key])) {
+					extended[key] = extendDeep(extended[key], value);
+				}
+				else {
+					extended[key] = value;
+				}
+			}
+		});
+	});
+
+	return extended;
+}