From 4e90f435961f9267d7cd7e12f240f8bdcfcda077 Mon Sep 17 00:00:00 2001
From: Tobias Koppers <tobias.koppers@googlemail.com>
Date: Fri, 7 Jul 2017 11:48:52 +0200
Subject: [PATCH] add hash method to concatenated module

fixes #5184
---
 lib/optimize/ConcatenatedModule.js | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/lib/optimize/ConcatenatedModule.js b/lib/optimize/ConcatenatedModule.js
index 52b2a41c8e2..984e03e4a09 100644
--- a/lib/optimize/ConcatenatedModule.js
+++ b/lib/optimize/ConcatenatedModule.js
@@ -451,6 +451,13 @@ class ConcatenatedModule extends Module {
 		return name;
 	}
 
+	updateHash(hash) {
+		for(const m of this.modules) {
+			m.updateHash(hash);
+		}
+		super.updateHash(hash);
+	}
+
 }
 
 class HarmonyImportSpecifierDependencyConcatenatedTemplate {