function getBoundingClientRect()

in js/bootstrap.bundle.js [1863:1899]


  function getBoundingClientRect(element, includeScale, isFixedStrategy) {
    if (includeScale === void 0) {
      includeScale = false;
    }

    if (isFixedStrategy === void 0) {
      isFixedStrategy = false;
    }

    var clientRect = element.getBoundingClientRect();
    var scaleX = 1;
    var scaleY = 1;

    if (includeScale && isHTMLElement(element)) {
      scaleX = element.offsetWidth > 0 ? round(clientRect.width) / element.offsetWidth || 1 : 1;
      scaleY = element.offsetHeight > 0 ? round(clientRect.height) / element.offsetHeight || 1 : 1;
    }

    var _ref = isElement(element) ? getWindow(element) : window,
        visualViewport = _ref.visualViewport;

    var addVisualOffsets = !isLayoutViewport() && isFixedStrategy;
    var x = (clientRect.left + (addVisualOffsets && visualViewport ? visualViewport.offsetLeft : 0)) / scaleX;
    var y = (clientRect.top + (addVisualOffsets && visualViewport ? visualViewport.offsetTop : 0)) / scaleY;
    var width = clientRect.width / scaleX;
    var height = clientRect.height / scaleY;
    return {
      width: width,
      height: height,
      top: y,
      right: x + width,
      bottom: y + height,
      left: x,
      x: x,
      y: y
    };
  }