fix: baseUrl should be optional for llama-deploy example (#139)

.changeset/silent-chefs-thank.md

@@ -0,0 +1,5 @@
+---
+'@llamaindex/chat-ui': patch
+---
+
+fix: baseUrl should be optional for llama deploy

examples/llama-deploy/ui/app/page.tsx

@@ -3,19 +3,16 @@
 import { useState } from 'react'
 import { useWorkflow } from '@llamaindex/chat-ui'
 
-const baseUrl = process.env.NEXT_PUBLIC_BASE_PATH ?? ''
-const deployment = process.env.NEXT_PUBLIC_DEPLOYMENT_NAME || 'QuickStart'
-const defaultWorkflow =
-  process.env.NEXT_PUBLIC_WORKFLOW_NAME || 'adhoc_workflow'
+const DEPLOYMENT_NAME = 'QuickStart'
+const DEFAULT_WORKFLOW = 'adhoc_workflow'
 
 export default function Home() {
   const [userInput, setUserInput] = useState('Please run task')
-  const [workflow, setWorkflow] = useState(defaultWorkflow)
+  const [workflow, setWorkflow] = useState(DEFAULT_WORKFLOW)
 
   const { runId, start, stop, sendEvent, events, status } = useWorkflow({
-    baseUrl,
-    deployment,
-    workflow,
+    deployment: DEPLOYMENT_NAME,
+    workflow: DEFAULT_WORKFLOW,
     onStopEvent: event => {
       console.log('Stop event:', event)
     },

examples/llama-deploy/ui/next.config.ts

@@ -0,0 +1,8 @@
+import type { NextConfig } from 'next'
+
+const nextConfig: NextConfig = {
+  // The base path to create proxy to nextjs frontend in LlamaDeploy
+  basePath: '/deployments/QuickStart/ui',
+}
+
+export default nextConfig

packages/chat-ui/src/hook/use-workflow/helper.ts

@@ -72,11 +72,7 @@ export async function fetchTaskEvents<E extends WorkflowEvent>(
   },
   callback?: StreamingEventCallback<E>
 ): Promise<E[]> {
-  const baseUrl = params.client.getConfig().baseUrl
-  if (!baseUrl) {
-    throw new Error('Base URL is missing in client config')
-  }
-
+  const baseUrl = params.client.getConfig().baseUrl || ''
   const { task_id, session_id } = params.task
   const url = `${baseUrl}/deployments/${params.deploymentName}/tasks/${task_id}/events?session_id=${session_id}&raw_event=true`
   const response = await fetch(url, {