create-agent-chat-app/templates/memory-agent/utils.ts

Create a LangGraph chat app with one command

import { BaseStore, LangGraphRunnableConfig } from "@langchain/langgraph";
/**
 * Get the store from the configuration or throw an error.
 */
export function getStoreFromConfigOrThrow(
  config: LangGraphRunnableConfig,
): BaseStore {
  if (!config.store) {
    throw new Error("Store not found in configuration");
  }

  return config.store;
}

/**
 * Split the fully specified model name into model and provider.
 */
export function splitModelAndProvider(fullySpecifiedName: string): {
  model: string;
  provider?: string;
} {
  let provider: string | undefined;
  let model: string;

  if (fullySpecifiedName.includes("/")) {
    [provider, model] = fullySpecifiedName.split("/", 2);
  } else {
    model = fullySpecifiedName;
  }

  return { model, provider };
}