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

node_modules/find-up-simple/index.d.ts

@@ -0,0 +1,74 @@
+export type Options = {
+	/**
+	The directory to start from.
+
+	@default process.cwd()
+	*/
+	readonly cwd?: URL | string;
+
+	/**
+	The type of path to match.
+
+	@default 'file'
+	*/
+	readonly type?: 'file' | 'directory';
+
+	/**
+	A directory path where the search halts if no matches are found before reaching this point.
+
+	Default: Root directory
+	*/
+	readonly stopAt?: URL | string;
+};
+
+/**
+Find a file or directory by walking up parent directories.
+
+@param name - The name of the file or directory to find.
+@returns The found path or `undefined` if it could not be found.
+
+@example
+```
+// /
+// └── Users
+//     └── sindresorhus
+//         ├── unicorn.png
+//         └── foo
+//             └── bar
+//                 ├── baz
+//                 └── example.js
+
+// example.js
+import {findUp} from 'find-up-simple';
+
+console.log(await findUp('unicorn.png'));
+//=> '/Users/sindresorhus/unicorn.png'
+```
+*/
+export function findUp(name: string, options?: Options): Promise<string | undefined>;
+
+/**
+Find a file or directory by walking up parent directories.
+
+@param name - The name of the file or directory to find.
+@returns The found path or `undefined` if it could not be found.
+
+@example
+```
+// /
+// └── Users
+//     └── sindresorhus
+//         ├── unicorn.png
+//         └── foo
+//             └── bar
+//                 ├── baz
+//                 └── example.js
+
+// example.js
+import {findUpSync} from 'find-up-simple';
+
+console.log(findUpSync('unicorn.png'));
+//=> '/Users/sindresorhus/unicorn.png'
+```
+*/
+export function findUpSync(name: string, options?: Options): string | undefined;