import type { DB } from '../../data/db/index.js';
export interface ExpireStaleTracesResult {
    /** Trace rows force-closed by this sweep (`open` past `expires_at`). */
    readonly expired: number;
    /** Rows newly inserted into `trace_retained` across all expired traces. */
    readonly retained: number;
}
/** Force-closes every trace whose `expires_at` has passed; copies each to the cold set. */
export declare function expireStaleTraces(db: DB, now?: Date): Promise<ExpireStaleTracesResult>;
//# sourceMappingURL=expire-stale-traces.d.ts.map