@copilotkit/runtime/dist/service-adapters/langchain/langchain-adapter.d.mts

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import "reflect-metadata";
import { CopilotRuntimeChatCompletionRequest, CopilotRuntimeChatCompletionResponse, CopilotServiceAdapter } from "../service-adapter.mjs";
import { LangChainReturnType } from "./types.mjs";
import { BaseMessage } from "@langchain/core/messages";
import { DynamicStructuredTool } from "@langchain/core/tools";

//#region src/service-adapters/langchain/langchain-adapter.d.ts
interface ChainFnParameters {
  model: string;
  messages: BaseMessage[];
  tools: DynamicStructuredTool[];
  threadId?: string;
  runId?: string;
}
interface LangChainAdapterOptions {
  /**
   * A function that uses the LangChain API to generate a response.
   */
  chainFn: (parameters: ChainFnParameters) => Promise<LangChainReturnType>;
}
declare class LangChainAdapter implements CopilotServiceAdapter {
  private options;
  /**
   * To use LangChain as a backend, provide a handler function to the adapter with your custom LangChain logic.
   */
  get name(): string;
  constructor(options: LangChainAdapterOptions);
  process(request: CopilotRuntimeChatCompletionRequest): Promise<CopilotRuntimeChatCompletionResponse>;
}
//#endregion
export { LangChainAdapter };
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