import type { CheckpointStore, SerializableAgentState } from '../../types';
export declare class StaleResumeError extends Error {
    readonly level = "warning";
    constructor(message: string);
}
export declare class RunStateManager {
    private store;
    constructor(storage?: 'memory' | CheckpointStore);
    suspend(runId: string, state: SerializableAgentState): Promise<void>;
    checkpointStep(runId: string, state: SerializableAgentState): Promise<void>;
    loadForCrashResume(runId: string): Promise<SerializableAgentState | undefined>;
    resume(runId: string): Promise<SerializableAgentState | undefined>;
    claimResume(runId: string, state: SerializableAgentState): Promise<boolean>;
    complete(runId: string): Promise<void>;
    cancel(runId: string): Promise<void>;
}
export declare function generateRunId(): string;