Some code cleanup, add jest coverage and begin using it for utility functions

resources/scripts/lib/objects.ts

@@ -0,0 +1,29 @@
+/**
+ * Determines if the value provided to the function is an object type that
+ * is not null.
+ */
+// eslint-disable-next-line @typescript-eslint/ban-types
+function isObject (val: unknown): val is {} {
+    return typeof val === 'object' && val !== null && !Array.isArray(val);
+}
+
+/**
+ * Determines if an object is truly empty by looking at the keys present
+ * and the prototype value.
+ */
+// eslint-disable-next-line @typescript-eslint/ban-types
+function isEmptyObject (val: {}): boolean {
+    return Object.keys(val).length === 0 && Object.getPrototypeOf(val) === Object.prototype;
+}
+
+/**
+ * A helper function for use in TypeScript that returns all of the keys
+ * for an object, but in a typed manner to make working with them a little
+ * easier.
+ */
+// eslint-disable-next-line @typescript-eslint/ban-types
+function getObjectKeys<T extends {}> (o: T): (keyof T)[] {
+    return Object.keys(o) as (keyof typeof o)[];
+}
+
+export { isObject, isEmptyObject, getObjectKeys };