//下载
npm i loudness --save or yarn add loudness
const loudness = require('loudness')
//设置音量
await loudness.setVolume(45)
//获取当前音量
const vol = await loudness.getVolume()
// vol = 45
//静音
await loudness.setMuted(false)
//获取音量状态
const mute = await loudness.getMuted()
// mute = false