import type { RunnableConfig } from '@langchain/core/runnables';
/**
 * Returns the RunnableConfig currently active in LangChain's AsyncLocalStorage,
 * or undefined if none is installed. This is the per-async-branch config that
 * LangGraph installs when entering a node — it carries the correct
 * `metadata.spawnKey` for child subgraph invocations inside `Promise.all`
 * parallel handoffs.
 *
 * Prefer this over any Graph-instance-cached config (e.g. `this.config`)
 * when dispatching events from code that may run concurrently across multiple
 * child subgraphs. An instance-level cache is shared state and races between
 * siblings — the last child to enter wins, so events fire with the wrong
 * child's metadata and the backend routes them to the wrong spawnKey.
 */
export declare function getCurrentRunnableConfig(): RunnableConfig | undefined;
/**
 * Safely dispatches a custom event and properly awaits it to avoid
 * race conditions where events are dispatched after run cleanup.
 *
 * **Parallel-handoff correctness:** callers should prefer passing
 * `undefined` (or the per-node runtime config). When `config` is omitted,
 * LangChain's `ensureConfig` reads the current RunnableConfig from
 * AsyncLocalStorage, which is correctly isolated per async branch under
 * `Promise.all`. Passing a stale instance-cached config overrides that
 * implicit config's metadata and cross-contaminates parallel children.
 */
export declare function safeDispatchCustomEvent(event: string, payload: unknown, config?: RunnableConfig): Promise<void>;