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

node_modules/get-east-asian-width/index.d.ts

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+export type WidthType = 'fullwidth' | 'halfwidth' | 'wide' | 'narrow' | 'neutral' | 'ambiguous';
+
+export type Options = {
+	/**
+	Whether to treat an `'ambiguous'` character as wide.
+
+	@default true
+
+	@example
+	```
+	import {eastAsianWidth} from 'get-east-asian-width';
+
+	const codePoint = '⛣'.codePointAt(0);
+
+	console.log(eastAsianWidth(codePoint));
+	//=> 1
+
+	console.log(eastAsianWidth(codePoint, {ambiguousAsWide: true}));
+	//=> 2
+	```
+
+	> Ambiguous characters behave like wide or narrow characters depending on the context (language tag, script identification, associated font, source of data, or explicit markup; all can provide the context). __If the context cannot be established reliably, they should be treated as narrow characters by default.__
+	> - http://www.unicode.org/reports/tr11/
+	*/
+	readonly ambiguousAsWide?: boolean;
+};
+
+/**
+Returns the width as a number for the given code point.
+
+@param codePoint - A Unicode code point.
+
+@example
+```
+import {eastAsianWidth} from 'get-east-asian-width';
+
+const codePoint = '字'.codePointAt(0);
+
+console.log(eastAsianWidth(codePoint));
+//=> 2
+```
+*/
+export function eastAsianWidth(codePoint: number, options?: Options): 1 | 2;
+
+/**
+Returns the type of “East Asian Width” for the given code point.
+
+@param codePoint - A Unicode code point.
+
+@example
+```
+import {eastAsianWidthType} from 'get-east-asian-width';
+
+const codePoint = '字'.codePointAt(0);
+
+console.log(eastAsianWidthType(codePoint));
+//=> 'wide'
+```
+*/
+export function eastAsianWidthType(codePoint: number): WidthType;