export declare const DEFAULT_MODEL_STREAM_IDLE_TIMEOUT_MS = 90000;
export declare const DEFAULT_MODEL_STREAM_FIRST_OUTPUT_TIMEOUT_MS: number;
export declare const MAX_MODEL_STREAM_STALL_RETRIES = 1;
export declare class ModelStreamStallError extends Error {
    constructor(idleMs: number);
}
export declare function withChunkIdleTimeout<T>(source: AsyncIterable<T> | Iterable<T>, getIdleMs: () => number, onStall: () => void): AsyncGenerator<T>;
export declare function raceWithStallDeadline<T>(promise: PromiseLike<T>, idleMs: number, onStall?: () => void): Promise<T>;