/**
 * Returns a LangChain RunnableConfig carrying the active AbortSignal(s),
 * when tool/runtime execution installed one in AsyncLocalStorage or a caller
 * supplied an explicit signal.
 */
export declare function getAbortSignalConfig(signal?: AbortSignal): {
    signal: AbortSignal;
} | undefined;
/** Invokes a LangChain runnable with the current request AbortSignal when present. */
export declare function invokeWithAbortSignal<TInput, TOutput>(runnable: {
    invoke(input: TInput, config?: {
        signal?: AbortSignal;
        metadata?: Record<string, unknown>;
        tags?: string[];
    }): Promise<TOutput>;
}, input: TInput, signal?: AbortSignal, invocation?: {
    metadata?: Record<string, unknown>;
    tags?: string[];
}): Promise<TOutput>;