import type { DAGGraph } from './dag.js';
export interface DAGCheckpoint {
    dagHash: string;
    completedNodes: string[];
    nodeOutputs: Record<string, string>;
    failedNodes: string[];
    nodeErrors?: Record<string, string>;
    skippedNodes: string[];
    timestamp: number;
}
export declare function computeDAGHash(graph: DAGGraph): string;
export declare function saveCheckpoint(dagId: string, checkpoint: DAGCheckpoint): Promise<void>;
export declare function loadCheckpoint(dagId: string, expectedHash: string): Promise<DAGCheckpoint | null>;
export declare function clearCheckpoint(dagId: string): Promise<void>;
export declare function serializeOutput(value: unknown): string;