import { Document, VectorStoreIndex } from "llamaindex"; import essay from "../essay"; async function main() { const document = new Document({ text: essay }); const index = await VectorStoreIndex.fromDocuments([document]); const chatEngine = index.asChatEngine({ similarityTopK: 5 }); const response = await chatEngine.chat({ message: "What did I work on in February 2021?", }); console.log(response.message.content); } main().catch(console.error);