From e4900edb714cab7a22f26bd08e8939209a3627b3 Mon Sep 17 00:00:00 2001
From: undefined <i@undefined.moe>
Date: Wed, 1 Jun 2022 19:23:07 +0800
Subject: [PATCH] ui: module loader: handle duplicate module

---
 packages/ui-default/utils/loadModule.ts | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/packages/ui-default/utils/loadModule.ts b/packages/ui-default/utils/loadModule.ts
index ad36c6acf..39707137e 100644
--- a/packages/ui-default/utils/loadModule.ts
+++ b/packages/ui-default/utils/loadModule.ts
@@ -1,4 +1,7 @@
+const loaded = {};
+
 export default async function loadExternalModule(target: string) {
+  if (loaded[target]) return loaded[target];
   const ele = document.createElement('script');
   ele.src = target;
   await new Promise((resolve, reject) => {
@@ -6,5 +9,6 @@ export default async function loadExternalModule(target: string) {
     ele.onerror = reject;
     document.head.appendChild(ele);
   });
-  return window.exports;
+  loaded[target] = window.exports;
+  return loaded[target];
 }