docs: Resolves #7483, resolves #7274

docs/core_docs/docs/integrations/tools/google_calendar.mdx

@@ -25,7 +25,7 @@ import IntegrationInstallTooltip from "@mdx_components/integration_install_toolt
 <IntegrationInstallTooltip></IntegrationInstallTooltip>
 
 ```bash npm2yarn
-npm install @langchain/openai @langchain/core
+npm install @langchain/openai @langchain/core @langchain/community @langchain/langgraph
 ```
 
 <CodeBlock language="typescript">{ToolExample}</CodeBlock>

examples/src/tools/google_calendar.ts

@@ -1,15 +1,16 @@
-import { initializeAgentExecutorWithOptions } from "langchain/agents";
-import { OpenAI } from "@langchain/openai";
+import { createReactAgent } from "@langchain/langgraph/prebuilt";
+import { ChatOpenAI } from "@langchain/openai";
 import { Calculator } from "@langchain/community/tools/calculator";
 import {
   GoogleCalendarCreateTool,
   GoogleCalendarViewTool,
 } from "@langchain/community/tools/google_calendar";
 
 export async function run() {
-  const model = new OpenAI({
+  const model = new ChatOpenAI({
     temperature: 0,
     apiKey: process.env.OPENAI_API_KEY,
+    model: "gpt-4o-mini",
   });
 
   const googleCalendarParams = {
@@ -31,22 +32,26 @@ export async function run() {
     new GoogleCalendarViewTool(googleCalendarParams),
   ];
 
-  const calendarAgent = await initializeAgentExecutorWithOptions(tools, model, {
-    agentType: "zero-shot-react-description",
-    verbose: true,
+  const calendarAgent = createReactAgent({
+    llm: model,
+    tools
   });
 
   const createInput = `Create a meeting with John Doe next Friday at 4pm - adding to the agenda of it the result of 99 + 99`;
 
-  const createResult = await calendarAgent.invoke({ input: createInput });
+  const createResult = await calendarAgent.invoke({
+    messages: [{ role: "user", content: createInput }],
+  });
   //   Create Result {
   //     output: 'A meeting with John Doe on 29th September at 4pm has been created and the result of 99 + 99 has been added to the agenda.'
   //   }
   console.log("Create Result", createResult);
 
   const viewInput = `What meetings do I have this week?`;
 
-  const viewResult = await calendarAgent.invoke({ input: viewInput });
+  const viewResult = await calendarAgent.invoke({
+    messages: [{ role: "user", content: viewInput }],
+  });
   //   View Result {
   //     output: "You have no meetings this week between 8am and 8pm."
   //   }

libs/langchain-community/src/tools/google_calendar/base.ts

@@ -1,7 +1,7 @@
 import { google } from "googleapis";
 import { Tool } from "@langchain/core/tools";
 import { getEnvironmentVariable } from "@langchain/core/utils/env";
-import { BaseLLM } from "@langchain/core/language_models/llms";
+import { BaseChatModel } from "@langchain/core/language_models/chat_models";
 
 export interface GoogleCalendarAgentParams {
   credentials?: {
@@ -10,7 +10,7 @@ export interface GoogleCalendarAgentParams {
     calendarId?: string;
   };
   scopes?: string[];
-  model?: BaseLLM;
+  model?: BaseChatModel;
 }
 
 export class GoogleCalendarBase extends Tool {
@@ -27,7 +27,7 @@ export class GoogleCalendarBase extends Tool {
 
   protected scopes: string[];
 
-  protected llm: BaseLLM;
+  protected llm: BaseChatModel;
 
   constructor(
     fields: GoogleCalendarAgentParams = {

libs/langchain-community/src/tools/google_calendar/commands/run-create-events.ts

@@ -2,7 +2,7 @@ import { google, calendar_v3 } from "googleapis";
 import type { JWT, GaxiosResponse } from "googleapis-common";
 import { PromptTemplate } from "@langchain/core/prompts";
 import { CallbackManagerForToolRun } from "@langchain/core/callbacks/manager";
-import { BaseLLM } from "@langchain/core/language_models/llms";
+import { BaseChatModel } from "@langchain/core/language_models/chat_models";
 import { StringOutputParser } from "@langchain/core/output_parsers";
 import { CREATE_EVENT_PROMPT } from "../prompts/index.js";
 import { getTimezoneOffsetInHours } from "../utils/get-timezone-offset-in-hours.js";
@@ -61,7 +61,7 @@ const createEvent = async (
 type RunCreateEventParams = {
   calendarId: string;
   auth: JWT;
-  model: BaseLLM;
+  model: BaseChatModel;
 };
 
 const runCreateEvent = async (

libs/langchain-community/src/tools/google_calendar/commands/run-view-events.ts

@@ -1,7 +1,7 @@
 import { calendar_v3 } from "googleapis";
 import type { JWT } from "googleapis-common";
 import { PromptTemplate } from "@langchain/core/prompts";
-import { BaseLLM } from "@langchain/core/language_models/llms";
+import { BaseChatModel } from "@langchain/core/language_models/chat_models";
 import { CallbackManagerForToolRun } from "@langchain/core/callbacks/manager";
 import { StringOutputParser } from "@langchain/core/output_parsers";
 
@@ -11,7 +11,7 @@ import { getTimezoneOffsetInHours } from "../utils/get-timezone-offset-in-hours.
 type RunViewEventParams = {
   calendarId: string;
   auth: JWT;
-  model: BaseLLM;
+  model: BaseChatModel;
 };
 
 const runViewEvents = async (

libs/langchain-community/src/tools/tests/google_calendar.test.ts

@@ -1,5 +1,5 @@
 import { jest, expect, describe } from "@jest/globals";
-import { LLM } from "@langchain/core/language_models/llms";
+import { BaseChatModel } from "@langchain/core/language_models/chat_models";
 import {
   GoogleCalendarCreateTool,
   GoogleCalendarViewTool,
@@ -25,13 +25,13 @@ jest.mock("@langchain/core/utils/env", () => ({
 //   runViewEvents: jest.fn(),
 // }));
 
-class FakeLLM extends LLM {
+class FakeLLM extends BaseChatModel {
   _llmType() {
     return "fake";
   }
 
-  async _call(prompt: string): Promise<string> {
-    return prompt;
+  async _generate() {
+    return {} as any;
   }
 }