/**
 * TypeORM subscriber that wraps every query in a tracing span via `logger.startSpan()`.
 *
 * Span names are derived from:
 *   1. A SQL comment added via QueryBuilder.comment('getUser')
 *   2. Fallback: table name + operation (e.g. "user SELECT")
 *
 * Uses the `startSpan` method installed on the logger by sentryCaptureMiddleware,
 * so nova-orm has no direct dependency on Sentry.
 */
export declare function createSpanSubscriber(logger: any): {
    beforeQuery(event: {
        queryRunner: any;
        query: string;
        parameters?: any[];
    }): void;
    afterQuery(event: {
        queryRunner: any;
        query: string;
        success: boolean;
        executionTime?: number;
        error?: any;
    }): void;
};