src/client/lib/hooks/useAdFreeCookie.ts

import { useState, useEffect } from 'react';
import { getCookie } from '@guardian/libs';

// User Attributes API cookies are dropped on subscription on support.theguardian.com for use by frontend.
// They are also dropped when a user logs in.
// User Cookie Information: github.com/guardian/members-data-api/blob/main/README.md
export const useAdFreeCookie = (): boolean => {
	const [hasAdFree, setHasAdFree] = useState(false);

	useEffect(() => {
		const adfreeCookieExists = !!getCookie({ name: 'GU_AF1' }); // Ad Free session cookie valid 48hrs

		setHasAdFree(adfreeCookieExists);
	}, []);

	return hasAdFree;
};