export declare class AuditService {
    private readonly logger;
    /**
     * Execute a dynamic query on the audit events table
     * @param query - SQL query string to execute on the events table
     * @returns Query result as JSON
     *
     * @example
     * // Query all events
     * const result = await auditService.query("SELECT * FROM events LIMIT 10");
     *
     * @example
     * // Query with JSON extraction
     * const result = await auditService.query(
     *   "SELECT * FROM events WHERE JSONExtractString(properties, 'status', 'liveStatus') = 'ONLINE' LIMIT 10"
     * );
     *
     * @example
     * // Query by event type
     * const result = await auditService.query("SELECT * FROM events WHERE event = 'device.status.online' LIMIT 10");
     */
    query(query: string): Promise<any>;
}
/**
 * Convenience function to query audit data
 * @param query - SQL query string to execute on the events table
 * @returns Query result as JSON
 *
 * @example
 * // Query all events
 * const result = await queryAudit("SELECT * FROM events LIMIT 10");
 *
 * @example
 * // Query with JSON extraction
 * const result = await queryAudit(
 *   "SELECT * FROM events WHERE JSONExtractString(properties, 'status', 'liveStatus') = 'ONLINE' LIMIT 10"
 * );
 *
 * @example
 * // Query by event type
 * const result = await queryAudit("SELECT * FROM events WHERE event = 'device.status.online' LIMIT 10");
 */
export declare function queryAudit(query: string): Promise<any>;