import { Snapshot } from "./types";
import { RetentionPolicy } from "../parse-args";
type SnapshotGroupBy = (snapshot: Snapshot) => string;
export declare const RETENTION_POLICY_GROUP_BY: Record<string, SnapshotGroupBy>;
export declare function getYearWeek(date: Date): string;
export declare function computeSnapshotsToDelete({ snapshots, retentionPolicy, }: {
    snapshots: Array<Snapshot>;
    retentionPolicy: RetentionPolicy;
}): Array<string>;
export {};