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laravel/resources/js/hooks/use-current-url.ts

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+import type { InertiaLinkProps } from '@inertiajs/react';
+import { usePage } from '@inertiajs/react';
+import { toUrl } from '@/lib/utils';
+
+export type IsCurrentUrlFn = (
+    urlToCheck: NonNullable<InertiaLinkProps['href']>,
+    currentUrl?: string,
+) => boolean;
+
+export type WhenCurrentUrlFn = <TIfTrue, TIfFalse = null>(
+    urlToCheck: NonNullable<InertiaLinkProps['href']>,
+    ifTrue: TIfTrue,
+    ifFalse?: TIfFalse,
+) => TIfTrue | TIfFalse;
+
+export type UseCurrentUrlReturn = {
+    currentUrl: string;
+    isCurrentUrl: IsCurrentUrlFn;
+    whenCurrentUrl: WhenCurrentUrlFn;
+};
+
+export function useCurrentUrl(): UseCurrentUrlReturn {
+    const page = usePage();
+    const currentUrlPath = new URL(page.url, window?.location.origin).pathname;
+
+    const isCurrentUrl: IsCurrentUrlFn = (
+        urlToCheck: NonNullable<InertiaLinkProps['href']>,
+        currentUrl?: string,
+    ) => {
+        const urlToCompare = currentUrl ?? currentUrlPath;
+        const urlString = toUrl(urlToCheck);
+
+        if (!urlString.startsWith('http')) {
+            return urlString === urlToCompare;
+        }
+
+        try {
+            const absoluteUrl = new URL(urlString);
+            return absoluteUrl.pathname === urlToCompare;
+        } catch {
+            return false;
+        }
+    };
+
+    const whenCurrentUrl: WhenCurrentUrlFn = <TIfTrue, TIfFalse = null>(
+        urlToCheck: NonNullable<InertiaLinkProps['href']>,
+        ifTrue: TIfTrue,
+        ifFalse: TIfFalse = null as TIfFalse,
+    ): TIfTrue | TIfFalse => {
+        return isCurrentUrl(urlToCheck) ? ifTrue : ifFalse;
+    };
+
+    return {
+        currentUrl: currentUrlPath,
+        isCurrentUrl,
+        whenCurrentUrl,
+    };
+}