How to use the @pluginjs/classes.hasClass function in @pluginjs/classes

bindEvent(this.eventName('click'), `.${this.classes.ITEMRESELECT}`, e => {
        e.stopPropagation()
        if (this.is('disabled')) {
          return false
        }
        this.options.change.call(this, this.changeImage.bind(this))
        const getElementIndex = el => {
          const parentElement = parent(el)
          return children(parentElement).indexOf(el)
        }
        const index = getElementIndex(
          parentWith(hasClass(this.classes.ITEM), e.target)
        )
        this.change(index, this.url)
        return null
      }),
      // save

init(el, _package = false) {
    this.instance.enter('keyboard')

    this._package = _package
    this.$list = el
    this.$wrap = this._package
      ? parentWith(hasClass(this.classes.PACKAGE), this.$list[0])
      : parent(this.$list[0])
    this.$input = query('input', this.instance.$search)

    this.$fontList = null
    this.$selected = null

    this.downCount = 1
    this.upCount = 1
    this.bind()
  }

nextPage() {
    if (this.instance.mode === 'multiple') {
      this.instance.next(this.instance.focused)
    } else if (
      !hasClass(
        this.instance.classes.BLOCKED,
        this.instance.calendarNexts[this.instance.focused]
      )
    ) {
      this.instance.next(this.instance.focused, true)
    }
  }
  higherView() {

hideList() {
    removeClass(this.classes.MONTHSHOWLIST, this.$wrap)
    //
    for (let i = 1; i < this.events.length; i++) {
      if (!hasClass(this.classes.HIDE, this.events[i])) {
        addClass(this.classes.HIDE, this.events[i])
      }
    }

    this.showMore()
  }

hide() {
    if (!hasClass(this.classes.HIDE, this.$element)) {
      addClass(this.classes.HIDE, this.$element)
    }
  }

show() {
    if (hasClass(this.classes.HIDE, this.$element)) {
      removeClass(this.classes.HIDE, this.$element)
    }
  }
}

hide() {
    if (!hasClass(this.classes.HIDE, this.$element)) {
      addClass(this.classes.HIDE, this.$element)
    }
  }

}
    }

    let nextItem = addClass(this.classes.NEXT, next(activeItem))
    if (this.options.loop && !this.options.multiple && !isElement(nextItem)) {
      nextItem = this.items[0]
      addClass(this.classes.NEXT, nextItem)
    }
    let prevItem = addClass(this.classes.PREV, prev(activeItem))
    if (this.options.loop && !this.options.multiple && !isElement(prevItem)) {
      prevItem = this.items[this.items.length - 1]
      addClass(this.classes.PREV, prevItem)
    }

    if (this.options.loop && !this.options.multiple) {
      if (hasClass(this.classes.CLONED, nextItem)) {
        children(
          `.${this.classes.ITEM}:not(.${
            this.classes.CLONED
          })[data-swipe-item-index="${attr(
            'data-swipe-item-index',
            nextItem
          )}"]`,
          this.$inner
        ).forEach(children => {
          addClass(this.classes.CLONEDNEXT, children)
        })
      } else {
        children(
          `.${this.classes.ITEM}.${
            this.classes.CLONED
          }[data-swipe-item-index="${attr(

getWrap() {
    return parentWith(hasClass(this.classes.WRAP), this.element)
  },
  getLabel() {

() => {
        if (this.is('disbaled')) {
          return null
        }
        this.enter('save')
        if (hasClass(this.classes.SHOW, this.$wrap)) {
          removeClass(
            this.classes.SHOW,
            addClass(this.classes.EXIST, this.$wrap)
          )
        }
        this.DROPDOWN.hide()
        removeClass(this.classes.OPENDISABLE, this.TRIGGER.$trigger)
        removeClass(this.classes.WRITE, this.$wrap)
        return false
      },
      this.$save