import type { WorkflowContext } from './types.ts';
export interface Checkpoint {
    id: string;
    stepName: string;
    artifacts: Record<string, unknown>;
    timestamp: Date;
    sequence: number;
}
export declare class WorkflowCheckpoint {
    private checkpoints;
    private sequence;
    save(stepName: string, context: WorkflowContext): string;
    restore(checkpointId: string, context: WorkflowContext): void;
    clear(checkpointId: string): void;
    clearAll(): void;
    count(): number;
    getLatest(): Checkpoint | undefined;
    private deepClone;
}
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