How to use the howler.Howler.mute function in howler

export function setSaveData(data) {
  Howler.unload();
  Pool = {};

  Howler.mute(data.globalMuted);
  Howler.volume(data.globalVolume);

  ChannelVolume = data.channelVolume;

  const channelData = data.channelData;

  for (const item of channelData) {
    create(item.channel, item.src, {
      volume: item.volume,
      loop: item.loop,
      autoplay: false,
      mute: item.mute,
      rate: item.rate
    });

    // Pool[item.channel].seek(item.seek);

mute() {
    $('.mute img').attr('src', 'images/icon-mute.svg');
    localStorage.muted = 'true';
    Howler.mute(true);
    this.muted = true;
  }

api.unmuteAll = function () {
            Howler.mute(false);
        };

toggleMuted() {
      Howler.mute(!music.state.muted)
      music.state.muted = !music.state.muted
    },

mute() {
    Howler.mute();
  }

blur() {
    Howler.mute(true);
  }

focus() {
    if (!this.muted) {
      Howler.mute(false);
    }
  }

muted(value) {
                Howler.mute(value);
            },
        },

api.muteAll = function () {
            Howler.mute(true);
        };