get () {
      let { settings } = Glide
      let { length } = Components.Html.slides

      // If the `bound` option is active, a maximum running distance should be
      // reduced by `perView` and `focusAt` settings. Running distance
      // should end before creating an empty space after instance.
      if (this.isBound()) {
        return (length - 1) - (toInt(settings.perView) - 1) + toInt(settings.focusAt)
      }

      return length - 1
    }
Gets value of the running distance based
on zero-indexing number of slides.

@return {Number}