import type { RetentionOverview, WorkflowTypeRetentionPolicy } from '../types.ts';
import type { EngineInternals } from './internals.ts';
type CleanupWaiters = (workflowId: string) => void;
type RetentionSweepCallbacks = {
    hasConfiguredRetention: () => boolean;
    runRetentionSweep: () => Promise<void>;
    setNextRetentionSweepAt: () => void;
};
export declare function hasConfiguredRetention(internals: EngineInternals): boolean;
export declare function setNextRetentionSweepAt(internals: EngineInternals): void;
export declare function ensureRetentionSweepInterval(internals: EngineInternals, callbacks: RetentionSweepCallbacks): void;
export declare function runRetentionSweep(internals: EngineInternals, handleCleanupError: (source: string, error: unknown) => void, cleanupWaiters: CleanupWaiters): Promise<void>;
export declare function resolveWorkflowTypeRetention(internals: EngineInternals, type: string): WorkflowTypeRetentionPolicy;
export declare function getRetentionOverview(internals: EngineInternals, resolveRetentionForType?: (type: string) => WorkflowTypeRetentionPolicy): RetentionOverview;
export {};