Merge main into sweep/add-replicate-api-token-requirement

packages/create-llama/README.md

@@ -10,6 +10,8 @@ The easiest way to get started with [LlamaIndex](https://www.llamaindex.ai/) is
 
 ## Get Started
 
+Before you start, please note that to use `LlamaDeuce`, you must set the `REPLICATE_API_TOKEN` environment variable. This is required to authenticate with the Replicate API.
+
 You can run `create-llama` in interactive or non-interactive mode.
 
 ### Interactive
@@ -44,6 +46,7 @@ Ok to proceed? (y) y
 ✔ Would you like to use ESLint? … No / Yes
 Creating a new LlamaIndex app in /home/my-app.
 ```
+✔ Please provide your Replicate API key (leave blank to skip): … 
 
 ### Non-interactive
 

packages/create-llama/templates/types/simple/nextjs/app/api/chat/route.ts

@@ -1,4 +1,5 @@
 import { ChatMessage, OpenAI } from "llamaindex";
+import process from 'process';
 import { NextRequest, NextResponse } from "next/server";
 import { createChatEngine } from "./engine";
 
@@ -28,6 +29,9 @@ export async function POST(request: NextRequest) {
 
     const response = await chatEngine.chat(lastMessage.content, messages);
     const result: ChatMessage = {
+if (!process.env.REPLICATE_API_TOKEN) {
+  throw new Error('The REPLICATE_API_TOKEN environment variable is required to use LlamaDeuce. Please set this in your environment.');
+}
       role: "assistant",
       content: response.response,
     };