/**
 * Hook to access authentication state
 */
import type { User } from '../state/app-state.js';
/**
 * Access authentication state and permission checking
 *
 * @example
 * ```svelte
 * <script>
 *   import { useAuth } from '@happyvertical/smrt-svelte';
 *
 *   const auth = useAuth();
 * </script>
 *
 * {#if auth.isAuthenticated}
 *   <p>Welcome, {auth.user?.email}</p>
 *
 *   {#if auth.hasPermission('articles.create')}
 *     <button>Create Article</button>
 *   {/if}
 * {:else}
 *   <a href="/login">Sign In</a>
 * {/if}
 * ```
 */
export declare function useAuth(): {
    /** The authenticated user (null if not authenticated) */
    readonly user: User | null;
    /** Whether a user is authenticated */
    readonly isAuthenticated: boolean;
    /** List of user's permissions */
    readonly permissions: readonly string[];
    /** Check if user has a specific permission */
    hasPermission: (permission: string) => boolean;
    /** Check if user has all of the specified permissions */
    hasAllPermissions: (permissions: string[]) => boolean;
    /** Check if user has any of the specified permissions */
    hasAnyPermission: (permissions: string[]) => boolean;
};
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