/**
 * Unsubscribe Logic
 *
 * Shared server-side logic for processing newsletter unsubscribe requests.
 * Used by property-specific +page.server.ts files.
 *
 * @packageDocumentation
 */
import type { UnsubscribeResult } from './types.js';
/**
 * D1 Database interface (minimal)
 */
interface D1Database {
    prepare(query: string): D1PreparedStatement;
}
interface D1PreparedStatement {
    bind(...args: unknown[]): D1PreparedStatement;
    run(): Promise<D1Result>;
}
interface D1Result {
    success: boolean;
}
/**
 * Process an unsubscribe request from a URL token.
 *
 * Token format: base64(email:timestamp)
 *
 * @example
 * ```typescript
 * // In +page.server.ts
 * import { processUnsubscribe } from '@create-something/components/newsletter';
 *
 * export const load: PageServerLoad = async ({ url, platform }) => {
 *   const token = url.searchParams.get('token');
 *   return processUnsubscribe(token, platform?.env?.DB);
 * };
 * ```
 */
export declare function processUnsubscribe(token: string | null, db: D1Database | undefined): Promise<UnsubscribeResult>;
export {};