import BScroll from '@better-scroll/core'
import Indicators from '@better-scroll/indicators'
BScroll.use(Indicators)

const bs = new BScroll('.wrapper', {
  indicators: [
    relationElement: someHTMLElement
  ]
})

interface IndicatorOptions {
  interactive?: boolean
  ratio?: Ratio
  relationElementHandleElementIndex?: number
  relationElement: HTMLElement
}