export interface WorkerTurnState {
    worker: Worker;
    workflowId: string;
    turnId: number;
    kind: 'run' | 'resume';
    timeoutMs: number | undefined;
    /**
     * The workflow's captured revision (WFT-20), when known — carried forward
     * on every turn for this workflow (including `resume`, which never
     * re-supplies it), for `WorkerProtocolGuard` to validate the outbound
     * echo against.
     */
    revision?: string;
}
export type WorkerTurnTimeoutResolverForTesting = (turn: Pick<WorkerTurnState, 'workflowId' | 'kind'>) => number;
export declare class WorkerTurnWatchdog {
    #private;
    constructor(timeoutMs: number | undefined, onTimeout: (turn: WorkerTurnState) => void);
    begin(worker: Worker, workflowId: string, turnId: number, kind: WorkerTurnState['kind'], timeoutMs?: number | undefined, revision?: string): void;
    setTimeoutResolverForTesting(resolver: WorkerTurnTimeoutResolverForTesting): void;
    clear(worker: Worker): void;
    clearAll(): void;
    get(worker: Worker): WorkerTurnState | undefined;
}