@langchain/langgraph-sdk/dist/stream/discovery/subgraphs.d.cts

Client library for interacting with the LangGraph API

import { StreamStore } from "../store.cjs";
import { SubgraphDiscoverySnapshot } from "../types.cjs";
import { Event } from "@langchain/protocol";

//#region src/stream/discovery/subgraphs.d.ts
type SubgraphMap = ReadonlyMap<string, SubgraphDiscoverySnapshot>;
type SubgraphByNodeMap = ReadonlyMap<string, readonly SubgraphDiscoverySnapshot[]>;
declare class SubgraphDiscovery {
  #private;
  readonly store: StreamStore<SubgraphMap>;
  readonly byNodeStore: StreamStore<SubgraphByNodeMap>;
  /** Feed a single root event. Non-discovery events are ignored. */
  push(event: Event): void;
  /**
   * Seed subgraph hosts from checkpoint history (see
   * `namespace-from-history.collectSubgraphHostNamespaces`) so subgraph
   * cards render on thread refresh without waiting for the depth-1 SSE
   * replay. Supplies the host/promotion decision from history instead
   * of the live strict-prefix heuristic, then reuses the same
   * `#ensureShadow` / `#promoted` / `#commit` path. Idempotent: never
   * downgrades an entry that already reached a terminal state.
   */
  seedFromHistory(hosts: Array<{
    namespace: string[];
    status: "running" | "complete" | "error";
  }>): void;
  get snapshot(): SubgraphMap;
  get byNodeSnapshot(): SubgraphByNodeMap;
  /**
   * Drop all discovery state. Called on thread rebind / dispose so a
   * new thread's subgraphs cannot bleed into the previous UI.
   */
  reset(): void;
}
//#endregion
export { SubgraphByNodeMap, SubgraphDiscovery, SubgraphMap };
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