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

node_modules/devlop/lib/development.d.ts

@@ -0,0 +1,84 @@
+/**
+ * Wrap a function or class to show a deprecation message when first called.
+ *
+ * > 👉 **Important**: only shows a message when the `development` condition is
+ * > used, does nothing in production.
+ *
+ * When the resulting wrapped `fn` is called, emits a warning once to
+ * `console.error` (`stderr`).
+ * If a code is given, one warning message will be emitted in total per code.
+ *
+ * @template {Function} T
+ *   Function or class kind.
+ * @param {T} fn
+ *   Function or class.
+ * @param {string} message
+ *   Message explaining deprecation.
+ * @param {string | null | undefined} [code]
+ *   Deprecation identifier (optional); deprecation messages will be generated
+ *   only once per code.
+ * @returns {T}
+ *   Wrapped `fn`.
+ */
+export function deprecate<T extends Function>(
+  fn: T,
+  message: string,
+  code?: string | null | undefined
+): T
+/**
+ * Assert deep strict equivalence.
+ *
+ * > 👉 **Important**: only asserts when the `development` condition is used,
+ * > does nothing in production.
+ *
+ * @template {unknown} T
+ *   Expected kind.
+ * @param {unknown} actual
+ *   Value.
+ * @param {T} expected
+ *   Baseline.
+ * @param {Error | string | null | undefined} [message]
+ *   Message for assertion error (default: `'Expected values to be deeply equal'`).
+ * @returns {asserts actual is T}
+ *   Nothing; throws when `actual` is not deep strict equal to `expected`.
+ * @throws {AssertionError}
+ *   Throws when `actual` is not deep strict equal to `expected`.
+ */
+export function equal<T extends unknown>(
+  actual: unknown,
+  expected: T,
+  message?: Error | string | null | undefined
+): asserts actual is T
+/**
+ * Assert if `value` is truthy.
+ *
+ * > 👉 **Important**: only asserts when the `development` condition is used,
+ * > does nothing in production.
+ *
+ * @param {unknown} value
+ *   Value to assert.
+ * @param {Error | string | null | undefined} [message]
+ *   Message for assertion error (default: `'Expected value to be truthy'`).
+ * @returns {asserts value}
+ *   Nothing; throws when `value` is falsey.
+ * @throws {AssertionError}
+ *   Throws when `value` is falsey.
+ */
+export function ok(
+  value: unknown,
+  message?: Error | string | null | undefined
+): asserts value
+/**
+ * Assert that a code path never happens.
+ *
+ * > 👉 **Important**: only asserts when the `development` condition is used,
+ * > does nothing in production.
+ *
+ * @param {Error | string | null | undefined} [message]
+ *   Message for assertion error (default: `'Unreachable'`).
+ * @returns {never}
+ *   Nothing; always throws.
+ * @throws {AssertionError}
+ *   Throws when `value` is falsey.
+ */
+export function unreachable(message?: Error | string | null | undefined): never