Bug: Deepmerge on update

public/js/composables/ObjectUtils.js

@@ -0,0 +1,31 @@
+export default {
+	/**
+	* Performs a deep merge of objects and returns new object. Does not modify
+	* objects (immutable) and merges arrays via concatenation.
+	*
+	* @param {...object} objects - Objects to merge
+	* @returns {object} New object with merged key/values
+	*/
+	mergeDeep(...objects) {
+		const isObject = obj => obj && typeof obj === 'object';
+		
+		return objects.reduce((prev, obj) => {
+			Object.keys(obj).forEach(key => {
+				const pVal = prev[key];
+				const oVal = obj[key];
+				
+				if (Array.isArray(pVal) && Array.isArray(oVal)) {
+					prev[key] = pVal.concat(...oVal);
+				}
+				else if (isObject(pVal) && isObject(oVal)) {
+					prev[key] = this.mergeDeep(pVal, oVal);
+				}
+				else {
+					prev[key] = oVal;
+				}
+			});
+			
+			return prev;
+		}, {});
+	}
+}