example promptlayer call

promptlayer.js

 var requestStartTime = Date.now()

  const stream = new ReadableStream({
    async start(controller) {
      const onParse = (event: ParsedEvent | ReconnectInterval) => {
        if (event.type === "event") {
          const data = event.data;

          if (data === "[DONE]") {
            controller.close();

            var requestEndTime = Date.now()
            promptLayer(['js-test-completion'], "gpt-4" , "openai.ChatCompletion.create", "test prompt", "messages", "test response", requestStartTime, requestEndTime);

            return;
          }

          try {
            const json = JSON.parse(data);
            const text = json.choices[0].delta.content;
            const queue = encoder.encode(text);
            resText += text
            controller.enqueue(queue);
          } catch (e) {
            controller.error(e);
          }
        }
      };

      const parser = createParser(onParse);

      for await (const chunk of res.body as any) {
        parser.feed(decoder.decode(chunk));
      }
    }
  });