How to use the bootstrap/js/src/util.getTransitionDurationFromElement function in bootstrap

}

      $(tip).removeClass(ClassName.SHOW)

      // If this is a touch-enabled device we remove the extra
      // empty mouseover listeners we added for iOS support
      if ('ontouchstart' in document.documentElement) {
        $(document.body).children().off('mouseover', null, $.noop)
      }

      this._activeTrigger[Trigger.CLICK] = false
      this._activeTrigger[Trigger.FOCUS] = false
      this._activeTrigger[Trigger.HOVER] = false

      if ($(this.tip).hasClass(ClassName.FADE)) {
        const transitionDuration = Util.getTransitionDurationFromElement(tip)

        $(tip)
          .one(Util.TRANSITION_END, complete)
          .emulateTransitionEnd(transitionDuration)
      } else {
        complete()
      }

      this._hoverState = ''
    }

const complete = () => {
          if (this.config.animation) {
            this._fixTransition()
          }
          const prevHoverState = this._hoverState
          this._hoverState     = null

          $(this.element).trigger(this.constructor.Event.SHOWN)

          if (prevHoverState === HoverState.OUT) {
            this._leave(null, this)
          }
        }

        if ($(this.tip).hasClass(ClassName.FADE)) {
          const transitionDuration = Util.getTransitionDurationFromElement(this.tip)

          $(this.tip)
            .one(Util.TRANSITION_END, complete)
            .emulateTransitionEnd(transitionDuration)
        } else {
          complete()
        }
      }
    }