From 77094c55a7876f1c9cf79ef80e43af961cc8b662 Mon Sep 17 00:00:00 2001
From: Adam Shaw <arshaw@users.noreply.github.com>
Date: Wed, 16 Dec 2020 21:18:33 -0500
Subject: [PATCH] fix locale dist files for IE11. fixes #6014

---
 rollup.locales.js | 18 ++++++++++++++++--
 1 file changed, 16 insertions(+), 2 deletions(-)

diff --git a/rollup.locales.js b/rollup.locales.js
index 1d1539d44a..80d93e1269 100644
--- a/rollup.locales.js
+++ b/rollup.locales.js
@@ -30,7 +30,8 @@ module.exports = [
     },
     plugins: [
       externalizeRelative(), // resulting bundle will import the individual locales
-      sucraseInstance
+      sucraseInstance,
+      dumbDownFuncs()
     ]
   },
 
@@ -48,6 +49,7 @@ module.exports = [
     }),
     plugins: [
       sucraseInstance,
+      dumbDownFuncs(),
       bundleWrapLocalesAll()
     ]
   },
@@ -61,7 +63,8 @@ module.exports = [
       file: path.join('packages/core/locales', path.basename(srcLocaleFile, '.ts') + '.js')
     },
     plugins: [
-      sucraseInstance
+      sucraseInstance,
+      dumbDownFuncs()
     ]
   })),
 
@@ -79,6 +82,7 @@ module.exports = [
     }),
     plugins: [
       sucraseInstance,
+      dumbDownFuncs(),
       bundleWrapLocalesEach()
     ]
   }))
@@ -102,3 +106,13 @@ function bundleWrapLocalesEach() {
     }
   }
 }
+
+
+// for IE11: https://github.com/fullcalendar/fullcalendar/issues/6014
+function dumbDownFuncs() {
+  return {
+    renderChunk(code) {
+      return code.replace(/(\w+)(\([\w, ]\)\s*{)/g, '$1: function$2')
+    }
+  }
+}