mateusz-winiarczyk · mateusz-winiarczyk
--- a/src/redux/overlayBioEntity/overlayBioEntity.utils.ts
+++ b/src/redux/overlayBioEntity/overlayBioEntity.utils.ts
  return parsedOverlayBioEntities.success ? parsedOverlayBioEntities.data : undefined;
 };
+
+type GetActiveOverlaysIdsAndOrderReturnType = {
+  maxOrderValue: number;
+  activeOverlaysIdsAndOrder: OverlaysIdsAndOrder;
+};
+
+export const getActiveOverlaysIdsAndOrder = (
+  overlaysIdsAndOrder: OverlaysIdsAndOrder,
+  activeOverlaysIds: number[],
+): GetActiveOverlaysIdsAndOrderReturnType => {
+  let maxOrderValue = -Infinity;
+  const activeOverlaysIdsAndOrder = overlaysIdsAndOrder.filter(({ idObject, order }) => {
+    const isActive = activeOverlaysIds.includes(idObject);
+    if (isActive && order > maxOrderValue) maxOrderValue = order;