Deprecated Features

import { ReActAgent } from "llamaindex/agent";
import { OpenAI } from "@llamaindex/openai";

const agent = new ReActAgent({
  llm: new OpenAI({ model: "gpt-4" }),
  tools: [myTool],
});

const response = await agent.chat({ message: "Hello" });

import { AgentWorkflow } from "@llamaindex/workflow";
import { OpenAI } from "@llamaindex/openai";

const workflow = new AgentWorkflow({
  llm: new OpenAI({ model: "gpt-4" }),
  tools: [myTool],
});

const response = await workflow.run({ message: "Hello" });

import { serviceContextFromDefaults } from "llamaindex";
import { OpenAI, OpenAIEmbedding } from "@llamaindex/openai";

const serviceContext = serviceContextFromDefaults({
  llm: new OpenAI({ model: "gpt-4" }),
  embedModel: new OpenAIEmbedding(),
  chunkSize: 512,
});

const index = await VectorStoreIndex.fromDocuments(documents, {
  serviceContext,
});

import { Settings, VectorStoreIndex } from "llamaindex";
import { OpenAI, OpenAIEmbedding } from "@llamaindex/openai";

Settings.llm = new OpenAI({ model: "gpt-4" });
Settings.embedModel = new OpenAIEmbedding();
Settings.chunkSize = 512;

const index = await VectorStoreIndex.fromDocuments(documents);

npm install @llamaindex/workflow

import { Workflow, StartEvent, StopEvent } from "@llamaindex/workflow";

class MyWorkflow extends Workflow {
  async run(ctx: Context, ev: StartEvent) {
    // Your workflow logic
    return new StopEvent({ result: "done" });
  }
}

import { PDFReader } from "llamaindex/readers/PDFReader";

npm install @llamaindex/readers

import { PDFReader } from "@llamaindex/readers/pdf";

// These no longer work
import { OpenAI, Anthropic, Pinecone } from "llamaindex";

import { OpenAI } from "@llamaindex/openai";
import { Anthropic } from "@llamaindex/anthropic";
import { PineconeVectorStore } from "@llamaindex/pinecone";

npm install gpt-tokenizer

import { LlamaCloudIndex } from "llamaindex";

npm install @llamaindex/cloud

import { LlamaCloudIndex } from "@llamaindex/cloud";

engine.query(message); // Inconsistent usage

queryEngine.query({ query: "..." });
chatEngine.chat({ message: "..." });

// Enable verbose logging to see deprecation warnings
Settings.debug = true;

# Check for deprecated imports
grep -r "from 'llamaindex/agent'" .
grep -r "ServiceContext" .

// ✗ Bad: Ignoring deprecation warnings
import { ReActAgent } from "llamaindex/agent"; // Shows warning

// ✓ Good: Update when you see the warning
import { AgentWorkflow } from "@llamaindex/workflow";

npm test
npm run build