Add supporting themes required for Lotusdocs

themes/hugo-mod-jslibs-dist/popperjs/package/lib/utils/computeOffsets.js.flow

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+// @flow
+import getBasePlacement from './getBasePlacement';
+import getVariation from './getVariation';
+import getMainAxisFromPlacement from './getMainAxisFromPlacement';
+import type {
+  Rect,
+  PositioningStrategy,
+  Offsets,
+  ClientRectObject,
+} from '../types';
+import { top, right, bottom, left, start, end, type Placement } from '../enums';
+
+export default function computeOffsets({
+  reference,
+  element,
+  placement,
+}: {
+  reference: Rect | ClientRectObject,
+  element: Rect | ClientRectObject,
+  strategy: PositioningStrategy,
+  placement?: Placement,
+}): Offsets {
+  const basePlacement = placement ? getBasePlacement(placement) : null;
+  const variation = placement ? getVariation(placement) : null;
+  const commonX = reference.x + reference.width / 2 - element.width / 2;
+  const commonY = reference.y + reference.height / 2 - element.height / 2;
+
+  let offsets;
+  switch (basePlacement) {
+    case top:
+      offsets = {
+        x: commonX,
+        y: reference.y - element.height,
+      };
+      break;
+    case bottom:
+      offsets = {
+        x: commonX,
+        y: reference.y + reference.height,
+      };
+      break;
+    case right:
+      offsets = {
+        x: reference.x + reference.width,
+        y: commonY,
+      };
+      break;
+    case left:
+      offsets = {
+        x: reference.x - element.width,
+        y: commonY,
+      };
+      break;
+    default:
+      offsets = {
+        x: reference.x,
+        y: reference.y,
+      };
+  }
+
+  const mainAxis = basePlacement
+    ? getMainAxisFromPlacement(basePlacement)
+    : null;
+
+  if (mainAxis != null) {
+    const len = mainAxis === 'y' ? 'height' : 'width';
+
+    switch (variation) {
+      case start:
+        offsets[mainAxis] =
+          offsets[mainAxis] - (reference[len] / 2 - element[len] / 2);
+        break;
+      case end:
+        offsets[mainAxis] =
+          offsets[mainAxis] + (reference[len] / 2 - element[len] / 2);
+        break;
+      default:
+    }
+  }
+
+  return offsets;
+}