import { type Storage } from '../../storage/interface.ts';
import type { Checkpoint, WorkerReplayOperationFailure, WorkerReplayOperationSignature } from '../types.ts';
export declare const CHECKPOINT_REPLAY_PAYLOAD_KEY = "__weftCheckpointReplay";
export type CheckpointReplayPayload = {
    accumulatedResults?: Array<[number, unknown]>;
    workerReplaySignatures?: Array<[number, WorkerReplayOperationSignature]>;
    workerReplayFailures?: Array<[number, WorkerReplayOperationFailure]>;
};
export type PrunedCheckpointReplayState = {
    checkpoint: Checkpoint;
    replayPayload: CheckpointReplayPayload | undefined;
};
export declare function pruneCheckpointReplayState(checkpoint: Checkpoint, pendingOperationStep: number): PrunedCheckpointReplayState;
export declare function hydrateCheckpointReplayState(storage: Storage, workflowId: string, checkpoint: Checkpoint): Promise<Checkpoint>;
export declare function hydrateCheckpointReplayStateFromPayload(checkpoint: Checkpoint, replayPayload: CheckpointReplayPayload | undefined): Checkpoint;
export declare function attachTransientCheckpointReplayPayload(checkpoint: Checkpoint, replayPayload: CheckpointReplayPayload | undefined): Checkpoint;
export declare function createCheckpointEventPayload(checkpointStep: number, replayPayload: CheckpointReplayPayload | undefined): Record<string, unknown>;
export declare function mergeCheckpointReplayPayloads(left: CheckpointReplayPayload | undefined, right: CheckpointReplayPayload | undefined): CheckpointReplayPayload | undefined;
export declare function readCheckpointReplayPayload(payload: unknown): CheckpointReplayPayload | undefined;
export declare function stripInternalCheckpointReplayPayload(payload: Record<string, unknown>): Record<string, unknown>;