log check -- msg chunk

src/js/08-chat.js

@@ -192,20 +192,21 @@
         body: JSON.stringify(payload),
       })
         .then((response) => {
-          const reader = response.body?.getReader()
+          const reader = response.body.getReader()
           const decoder = new TextDecoder('utf-8')
 
           const messageItem = document.createElement('pre')
           messageItem.className = 'message ai'
 
           function readStream () {
-            return reader?.read().then(({ done, value }) => {
+            return reader.read().then(({ done, value }) => {
               if (done) {
                 chatBody.removeChild(chatLoader)
                 isLoading = false
                 return
               }
               const chunk = decoder.decode(value, { stream: true })
+              console.log(chunk)
               messageItem.textContent += chunk
               chatBody.scrollTop = chatBody?.scrollHeight
               return readStream()