utils in another file

src/utils.js

@@ -0,0 +1,41 @@
+const self = {
+  /**
+   * Merge resources by reading object keys and keeping reference value only if it's type is different from the source
+   * @param ref - reference object/value
+   * @param src - source object/value
+   * @returns {*}
+   */
+  merge: (ref, src) => {
+    if (typeof ref !== typeof src) {
+      return ref;
+    } else if (ref.length && !src.length) {
+      return ref;
+    } else if (ref.length && src.length) {
+      return src;
+    } else if (typeof ref === 'object') {
+      const out = {};
+      Object.keys(ref).forEach((key) => out[key] = self.merge(ref[key], src[key]));
+      return out;
+    } else {
+      return src;
+    }
+  },
+
+  /**
+   * Clone any JS variable or object
+   * @param {*} arg
+   * @returns {any}
+   */
+  ezClone: (arg) => JSON.parse(JSON.stringify(arg)),
+
+  /**
+   * Create a new map of the defined bounds and filling
+   * @param {number} w
+   * @param {number} h
+   * @param {*} fill
+   * @returns {any[][]}
+   */
+  newMap: (w, h, fill) => new Array(w).fill(0).map(() => new Array(h).fill(fill))
+};
+
+module.exports = self;