Function stopStreaming

apps/sim/app/(interfaces)/chat/hooks/use-chat-streaming.ts:77–108

(setMessages: React.Dispatch<React.SetStateAction<ChatMessage[]>>)

  const lastDisplayedPositionRef = useRef<number>(0) // Track displayed text in synced mode

  const stopStreaming = (setMessages: React.Dispatch<React.SetStateAction<ChatMessage[]>>) => {
    if (abortControllerRef.current) {
      // Abort the fetch request
      abortControllerRef.current.abort()
      abortControllerRef.current = null

      const latestContent = accumulatedTextRef.current

      setMessages((prev) => {
        const lastMessage = prev[prev.length - 1]

        if (lastMessage && lastMessage.type === 'assistant') {
          const content = latestContent || lastMessage.content
          const updatedContent =
            content + (content ? '\n\n_Response stopped by user._' : '_Response stopped by user._')

          return [
            ...prev.slice(0, -1),
            { ...lastMessage, content: updatedContent, isStreaming: false },
          ]
        }

        return prev
      })

      setIsStreamingResponse(false)
      accumulatedTextRef.current = ''
      lastStreamedPositionRef.current = 0
      lastDisplayedPositionRef.current = 0
      audioStreamingActiveRef.current = false
    }
  }

  const handleStreamedResponse = async (
    response: Response,