snapshot of https://github.com/makeplane/plane.git @ d868349a55de79979eb8b98701bf1702c67ad634 (2026-09-15)

apps/space/helpers/issue.helper.ts

@@ -0,0 +1,35 @@
+/**
+ * Copyright (c) 2023-present Plane Software, Inc. and contributors
+ * SPDX-License-Identifier: AGPL-3.0-only
+ * See the LICENSE file for details.
+ */
+
+import { differenceInCalendarDays } from "date-fns/differenceInCalendarDays";
+// plane internal
+import { STATE_GROUPS } from "@plane/constants";
+import type { TStateGroups } from "@plane/types";
+// helpers
+import { getDate } from "@/helpers/date-time.helper";
+
+/**
+ * @description check if the issue due date should be highlighted
+ * @param date
+ * @param stateGroup
+ * @returns boolean
+ */
+export const shouldHighlightIssueDueDate = (
+  date: string | Date | null,
+  stateGroup: TStateGroups | undefined
+): boolean => {
+  if (!date || !stateGroup) return false;
+  // if the issue is completed or cancelled, don't highlight the due date
+  if ([STATE_GROUPS.completed.key, STATE_GROUPS.cancelled.key].includes(stateGroup)) return false;
+
+  const parsedDate = getDate(date);
+  if (!parsedDate) return false;
+
+  const targetDateDistance = differenceInCalendarDays(parsedDate, new Date());
+
+  // if the issue is overdue, highlight the due date
+  return targetDateDistance <= 0;
+};