/**
 * @fileoverview Sync Context Hook - Automatically sync context with Vowel client
 *
 * This hook automatically updates the Vowel client's context whenever the provided
 * context value changes. It's useful for keeping the AI aware of dynamic app state
 * without manually calling updateContext.
 *
 * @example
 * ```tsx
 * function ProductPage({ productId }: { productId: string }) {
 *   const product = useProduct(productId);
 *
 *   // Automatically sync product context to Vowel
 *   useSyncContext({
 *     page: 'product',
 *     productId: product.id,
 *     productName: product.name,
 *     price: product.price,
 *   });
 *
 *   return <div>{product.name}</div>;
 * }
 * ```
 *
 * @example
 * ```tsx
 * function CheckoutPage() {
 *   const cart = useCart();
 *
 *   // Sync cart context, clear on unmount
 *   useSyncContext({
 *     page: 'checkout',
 *     cartTotal: cart.total,
 *     itemCount: cart.items.length,
 *   });
 *
 *   return <div>Checkout</div>;
 * }
 * ```
 *
 * @module @vowel.to/client/hooks
 * @author vowel.to
 * @license MIT
 */
/**
 * Hook that automatically syncs context to the Vowel client
 *
 * Updates the Vowel client's context whenever the provided context value changes.
 * The context is automatically sent to the AI via session.update if a session is active.
 *
 * @param context - Context object to sync with Vowel client. Use null to clear context.
 *                  Changes are detected via deep comparison of JSON.stringify result.
 *
 * @example
 * ```tsx
 * function MyComponent() {
 *   const [user, setUser] = useState(null);
 *
 *   // Automatically sync user context
 *   useSyncContext(user ? { userId: user.id, userName: user.name } : null);
 *
 *   return <div>Hello {user?.name}</div>;
 * }
 * ```
 */
export declare function useSyncContext(context: Record<string, unknown> | null): void;
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