Refactor routing in App component to enhance navigation and improve error handling by integrating dynamic routes and updating the NotFound route.

node_modules/cli-spinners/index.js

@@ -0,0 +1,15 @@
+'use strict';
+
+const spinners = Object.assign({}, require('./spinners.json')); // eslint-disable-line import/extensions
+
+const spinnersList = Object.keys(spinners);
+
+Object.defineProperty(spinners, 'random', {
+	get() {
+		const randomIndex = Math.floor(Math.random() * spinnersList.length);
+		const spinnerName = spinnersList[randomIndex];
+		return spinners[spinnerName];
+	}
+});
+
+module.exports = spinners;