text: import LoadingBar from './loading-bar'
  
  let loadingBarInstance
  let color = 'primary'
  let duration = 800
  let failedColor = 'error'
  let height = 2
  let timer
  
  // 获取loadingBar的实例
  function getLoadingBarInstance () {
    //初始化实例
    loadingBarInstance = loadingBarInstance || LoadingBar.newInstance({
      color: color,
      failedColor: failedColor,
      height: height
    })
    return loadingBarInstance
  }
  
  //更新进度并传入配置
  function update (options) {
    let instance = getLoadingBarInstance()
    instance.update(options)
  }
  
  // 隐藏加载进度
  function hide () {
    setTimeout(() => {
      update({
        show: false
      })
      setTimeout(() => {
        update({
          percent: 0
        })
      }, 200)
    }, duration)
  }
  
  // 清除timer
  function clearTimer () {
    if (timer) {
      clearInterval(timer)
      timer = null
    }
  }
  
  export default {
    start () {
      if (timer) return
      let percent = 0
      update({
        percent: percent,
        status: 'success',
        show: true
      })
      //  开启模拟动画
      timer = setInterval(() => {
        percent += Math.floor(Math.random() * 3 + 1)
        if (percent > 95) {
          clearTimer()
        }
        update({
          percent: percent,
          status: 'success',
          show: true
        })
      }, 200)
    },
    update (percent) {
      clearTimer()
      update({
        percent: percent,
        status: 'success',
        show: true
      })
    },
    done () {
      clearTimer()
      update({
        percent: 100,
        status: 'success',
        show: true
      })
      hide()
    },
    error () {
      clearTimer()
      update({
        percent: 100,
        status: 'error',
        show: true
      })
      hide()
    },
    config (options) {
      this.destroy()
      if (options.color) {
        color = options.color
      }
      if (options.duration) {
        duration = options.duration
      }
      if (options.failedColor) {
        failedColor = options.failedColor
      }
      if (options.height) {
        height = options.height
      }
    },
    destroy () {
      clearTimer()
      let instance = getLoadingBarInstance()
      loadingBarInstance = null
      instance.destroy()
    }
  }
  