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

node_modules/stringify-entities/lib/util/format-basic.d.ts

@@ -0,0 +1,7 @@
+/**
+ * The smallest way to encode a character.
+ *
+ * @param {number} code
+ * @returns {string}
+ */
+export function formatBasic(code: number): string;