From f0f6e69e501582f9847c122dbe62e291e62d6476 Mon Sep 17 00:00:00 2001
From: Simon Mechler <170467894+Fiery-132@users.noreply.github.com>
Date: Mon, 17 Feb 2025 21:15:15 +0100
Subject: [PATCH] Added polyfill for Object.groupBy

---
 src/hooks.ts | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/src/hooks.ts b/src/hooks.ts
index a1454ac02..a3a5a34e6 100644
--- a/src/hooks.ts
+++ b/src/hooks.ts
@@ -2,3 +2,18 @@ import "./dayjs-plugins";
 
 import { i18n } from "$lib/utils/i18n";
 export const reroute = i18n.reroute();
+
+// Polyfill Object.groupBy
+if (typeof Object.groupBy === typeof undefined) {
+  Object.groupBy = <K extends PropertyKey, T>(
+    items: Iterable<T>,
+    keySelector: (item: T, index: number) => K,
+  ): Partial<Record<K, T[]>> => {
+    return Array.from(items).reduce((acc: Partial<Record<K, T[]>>, ...args) => {
+      const key = keySelector(args[0], args[1]);
+      acc[key] ??= [];
+      acc[key].push(args[0]);
+      return acc;
+    }, {});
+  };
+}