ignore click event that occurs shortly after touchstart

debounce.ts

export default function debounce(func: Function, sleep?: number): EventListener {
  let timerMobile: number | undefined
  let timer: number | undefined
  return function debounced(e: Event): void {
    if (!!timer || (!!timerMobile && e.type === "click")) {
      return
    }
    func()
    if (typeof sleep !== "undefined" && sleep > 0) {
      clearTimeout(timer)
      timer = setTimeout(() => {
        timer = undefined
      }, sleep)
    }
    if (e.type === "touchstart") {
      clearTimeout(timerMobile)
      timerMobile = setTimeout(() => {
        timerMobile = undefined
      }, 450)
    }
  }
}