feat: avoid install installed plugin

iamkun · Nov 13, 2020 · 0ec5804 · 0ec5804
1 parent ef1979c
commit 0ec5804
Showing 1 changed file with 5 additions and 0 deletions.
diff --git a/src/index.js b/src/index.js
@@ -387,7 +387,12 @@ dayjs.prototype = proto;
 })
 
 dayjs.extend = (plugin, option) => {
+  if (plugin.installed) {
+    return dayjs
+  }
+
   plugin(option, Dayjs, dayjs)
+  plugin.installed = true
   return dayjs
 }