How to use the cloudinary-core.Util.width function in cloudinary-core

findContainerWidth() {
    var containerWidth, style;
    containerWidth = 0;
    let element = this.element;
    while (isElement((element = element != null ? element.parentNode : void 0)) && !containerWidth) {
      style = this.window ? this.window.getComputedStyle(element) : '';
      if (!/^inline/.test(style.display)) {
        containerWidth = Util.width(element);
      }
    }
    return Math.round(containerWidth);
  };