From a972358900ecf15cac7c54c3819ee5cf7429c55d Mon Sep 17 00:00:00 2001
From: H M SHAHADUL ISLAM <shahadul.islam1@gmail.com>
Date: Tue, 30 Jan 2024 11:04:20 +0600
Subject: [PATCH] fixed TypeError: Cannot read properties of undefined (reading
 'apply')

---
 src/index.js | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/src/index.js b/src/index.js
index d65b335..942d786 100644
--- a/src/index.js
+++ b/src/index.js
@@ -103,8 +103,12 @@ class WebpackRTLPlugin {
           }
         })
 
-        cssnanoPromise.then(() => {
-          chunk.files.push.apply(chunk.files, rtlFiles)
+       cssnanoPromise.then(() => {
+          if (chunk.files instanceof Set) {
+            rtlFiles.forEach( item => chunk.files.add( item ) );
+          } else {
+            chunk.files.push.apply(chunk.files, rtlFiles)
+          }
           cb()
         })
       }, callback)