Javascript babeljs.io版本的arrow函数在safari中失败

以下代码的第四行（生成错误

SyntaxError:Unexpected关键字'function'。Expected'）以结束参数列表。

由babeljs.io生成。你能纠正这个错误吗

上述代码由以下代码“箭头功能”版本生成，该版本取自

---

未传输

async

（在ES2016之前的任何环境中都不起作用）删除

async

和

wait

可消除所有这些行上的错误，但在第62行上会产生以下错误<代码>类型错误：记录器[a-1]。开始不是函数。（在“记录器[a-1].start（）”中，“记录器[a-1].start”未定义）我正在El Capitan上使用Safari 9.1.2，无法进一步更新。也许我的旅行太老了。有人在新的狩猎中尝试过这个吗？或者有没有办法重写像第62行这样的行呢？

async

没有被传输（在ES2016之前的任何环境中都不会工作）删除

async

和

wait

会消除所有这些行上的错误，但在第62行上会产生以下错误<代码>类型错误：记录器[a-1]。开始不是函数。（在“记录器[a-1].start（）”中，“记录器[a-1].start”未定义）我正在El Capitan上使用Safari 9.1.2，无法进一步更新。也许我的旅行太老了。有人在新的狩猎中尝试过这个吗？或者有没有办法重写像第62行这样的行？

"use strict";

var recordAudio = function recordAudio() {
  return new Promise(async function (resolve) {         
    var stream = await navigator.mediaDevices.getUserMedia({
      audio: true
    });
    var mediaRecorder = new MediaRecorder(stream);
    var audioChunks = [];
    mediaRecorder.addEventListener("dataavailable", function (event) {
      audioChunks.push(event.data);
    });

    var start = function start() {
      return mediaRecorder.start();
    };

    var stop = function stop() {
      return new Promise(function (resolve) {
        mediaRecorder.addEventListener("stop", function () {
          var audioBlob = new Blob(audioChunks);
          var audioUrl = URL.createObjectURL(audioBlob);
          var audio = new Audio(audioUrl);

          var play = function play() {
            return audio.play();
          };

          resolve({
            audioBlob: audioBlob,
            audioUrl: audioUrl,
            play: play
          });
        });
        mediaRecorder.stop();
      });
    };

    resolve({
      start: start,
      stop: stop
    });
  });
};

var sleep = function sleep(time) {
  return new Promise(function (resolve) {
    return setTimeout(resolve, time);
  });
};

var handleAction = async function handleAction() {
  var recorder = await recordAudio();
  var actionButton = document.getElementById('action');
  actionButton.disabled = true;
  recorder.start();
  await sleep(3000);
  var audio = await recorder.stop();
  audio.play();
  await sleep(3000);
  actionButton.disabled = false;
};

const recordAudio = () =>
  new Promise(async resolve => {
    const stream = await navigator.mediaDevices.getUserMedia({ audio: true });
    const mediaRecorder = new MediaRecorder(stream);
    const audioChunks = [];

    mediaRecorder.addEventListener("dataavailable", event => {
      audioChunks.push(event.data);
    });

    const start = () => mediaRecorder.start();

    const stop = () =>
      new Promise(resolve => {
        mediaRecorder.addEventListener("stop", () => {
          const audioBlob = new Blob(audioChunks);
          const audioUrl = URL.createObjectURL(audioBlob);
          const audio = new Audio(audioUrl);
          const play = () => audio.play();
          resolve({ audioBlob, audioUrl, play });
        });

        mediaRecorder.stop();
      });

    resolve({ start, stop });
  });

const sleep = time => new Promise(resolve => setTimeout(resolve, time));

const handleAction = async () => {
  const recorder = await recordAudio();
  const actionButton = document.getElementById('action');
  actionButton.disabled = true;
  recorder.start();
  await sleep(3000);
  const audio = await recorder.stop();
  audio.play();
  await sleep(3000);
  actionButton.disabled = false;
}