1 files changed, 29 insertions, 0 deletions
diff --git a/popperjs/package/lib/dom-utils/getLayoutRect.js.flow b/popperjs/package/lib/dom-utils/getLayoutRect.js.flow
new file mode 100644
index 0000000..fe99526
--- /dev/null
+++ b/popperjs/package/lib/dom-utils/getLayoutRect.js.flow
@@ -0,0 +1,29 @@
+// @flow
+import type { Rect } from '../types';
+import getBoundingClientRect from './getBoundingClientRect';
+
+// Returns the layout rect of an element relative to its offsetParent. Layout
+// means it doesn't take into account transforms.
+export default function getLayoutRect(element: HTMLElement): Rect {
+  const clientRect = getBoundingClientRect(element);
+
+  // Use the clientRect sizes if it's not been transformed.
+  // Fixes https://github.com/popperjs/popper-core/issues/1223
+  let width = element.offsetWidth;
+  let height = element.offsetHeight;
+
+  if (Math.abs(clientRect.width - width) <= 1) {
+    width = clientRect.width;
+  }
+
+  if (Math.abs(clientRect.height - height) <= 1) {
+    height = clientRect.height;
+  }
+
+  return {
+    x: element.offsetLeft,
+    y: element.offsetTop,
+    width,
+    height,
+  };
+}