penpot/frontend/resources/polyfills/scrollIntoViewIfNeeded.js

;(function() {
  if (!Element.prototype.scrollIntoViewIfNeeded) {
    Element.prototype.scrollIntoViewIfNeeded = function (centerIfNeeded) {
      centerIfNeeded = arguments.length === 0 ? true : !!centerIfNeeded;

      var parent = this.parentNode;
      if (parent) {
        var parentComputedStyle = window.getComputedStyle(parent, null),
          parentBorderTopWidth = parseInt(parentComputedStyle.getPropertyValue('border-top-width')),
          parentBorderLeftWidth = parseInt(parentComputedStyle.getPropertyValue('border-left-width')),
          overTop = this.offsetTop - parent.offsetTop < parent.scrollTop,
          overBottom = (this.offsetTop - parent.offsetTop + this.clientHeight - parentBorderTopWidth) > (parent.scrollTop + parent.clientHeight),
          overLeft = this.offsetLeft - parent.offsetLeft < parent.scrollLeft,
          overRight = (this.offsetLeft - parent.offsetLeft + this.clientWidth - parentBorderLeftWidth) > (parent.scrollLeft + parent.clientWidth),
          alignWithTop = overTop && !overBottom;

        if ((overTop || overBottom) && centerIfNeeded) {
          parent.scrollTop = this.offsetTop - parent.offsetTop - parent.clientHeight / 2 - parentBorderTopWidth + this.clientHeight / 2;
        }
        if ((overLeft || overRight) && centerIfNeeded) {
          parent.scrollLeft = this.offsetLeft - parent.offsetLeft - parent.clientWidth / 2 - parentBorderLeftWidth + this.clientWidth / 2;
        }
        if ((overTop || overBottom || overLeft || overRight) && !centerIfNeeded) {
          this.scrollIntoView(alignWithTop);
        }
      }
    };
  }
})()