From e2ae3ad1205fd344bb0f4b1875e86d2929e7f832 Mon Sep 17 00:00:00 2001
From: Valentin Semirulnik <v7rulnik@gmail.com>
Date: Tue, 1 Feb 2022 18:35:12 +0300
Subject: [PATCH] compare buffers via .equals

---
 src/index.js | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/src/index.js b/src/index.js
index e420cb45..ebbacb7d 100644
--- a/src/index.js
+++ b/src/index.js
@@ -205,11 +205,12 @@ class MiniCssExtractPlugin {
        */
       updateCacheModule(module) {
         if (
-          this.content !== /** @type {CssModule} */ (module).content ||
+          !this.content.equals(module.content) ||
           this.layer !== /** @type {CssModule} */ (module).layer ||
           this.supports !== /** @type {CssModule} */ (module).supports ||
           this.media !== /** @type {CssModule} */ (module).media ||
-          this.sourceMap !== /** @type {CssModule} */ (module).sourceMap ||
+          (Buffer.isBuffer(this.sourceMap) && Buffer.isBuffer(module.sourceMap) && !this.sourceMap.equals(module.sourceMap)) ||
+          this.sourceMap !== /** @type {CssModule} */ module.sourceMap ||
           this.assets !== /** @type {CssModule} */ (module).assets ||
           this.assetsInfo !== /** @type {CssModule} */ (module).assetsInfo
         ) {