import { RunnableConfig } from '@langchain/core/runnables';
import { StreamEvent } from '@langchain/core/tracers/log_stream';
import { CompiledGraph } from '@langchain/langgraph';
import { UiInterrupt } from './types';
/**
 * Handles human-in-the-loop interruptions and resumes a compiled LangGraph
 * once the UI provides a response.
 */
export declare class InterruptHandler<T extends string = string> {
    private graph;
    private readonly config;
    private resolveWait?;
    private rejectWait?;
    /**
     * Create a new InterruptHandler tied to a specific compiled graph and config.
     */
    constructor(graph: CompiledGraph<T>, config: RunnableConfig);
    /**
     * Returns a promise that resolves when the user provides a HITL response.
     */
    waitForUser(): Promise<AsyncIterable<StreamEvent>>;
    /**
     * Resume graph execution after the UI responds to an interrupt.
     */
    handle(interrupt: UiInterrupt, payload: unknown): void;
    /**
     * Abort the HITL wait and reject any pending continuation.
     */
    cancel(): void;
}