From 2bcf474b6920cac93574f75fce36bfc78e3a5aff Mon Sep 17 00:00:00 2001
From: Kedar <kedarv@users.noreply.github.com>
Date: Mon, 17 May 2021 06:37:03 -0700
Subject: [PATCH] check this.compiler.outputFileSystem.constructor is not
 undefined (#447)

* check this.compiler.outputFileSystem.constructor is not undefined

* Fix trailing spaces lint

* Update changelog with bug fix

Co-authored-by: Vesa Laakso <482561+valscion@users.noreply.github.com>
---
 CHANGELOG.md                | 4 ++++
 src/BundleAnalyzerPlugin.js | 3 +++
 2 files changed, 7 insertions(+)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 4e40f4e6..a8e0d392 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -12,6 +12,10 @@ _Note: Gaps between patch versions are faulty, broken or test releases._
 
 ## UNRELEASED
 
+ * **Bug Fix**
+   * Fix failure with `compiler.outputFileSystem.constructor` being `undefined` ([#447](https://github.com/webpack-contrib/webpack-bundle-analyzer/pull/447) by [@kedarv](https://github.com/kedarv) and [@alexander-akait](https://github.com/alexander-akait))
+     * **NOTE:** This fix doesn't have added test coverage so the fix might break in future versions unless test coverage is added later.
+
 ## 4.4.1
 
  * **Bug Fix**
diff --git a/src/BundleAnalyzerPlugin.js b/src/BundleAnalyzerPlugin.js
index bc37f1de..9e5c2842 100644
--- a/src/BundleAnalyzerPlugin.js
+++ b/src/BundleAnalyzerPlugin.js
@@ -134,6 +134,9 @@ class BundleAnalyzerPlugin {
   }
 
   getBundleDirFromCompiler() {
+    if (typeof this.compiler.outputFileSystem.constructor === 'undefined') {
+      return this.compiler.outputPath;
+    }
     switch (this.compiler.outputFileSystem.constructor.name) {
       case 'MemoryFileSystem':
         return null;