From de98e0b232509d5f40c135d540a70e415272ff85 Mon Sep 17 00:00:00 2001
From: Florian Dold <florian.dold@gmail.com>
Date: Wed, 3 May 2017 15:35:00 +0200
Subject: node_modules

---
 .../lib/optimize/MergeDuplicateChunksPlugin.js     | 33 ++++++++++++++++++++++
 1 file changed, 33 insertions(+)
 create mode 100644 node_modules/webpack/lib/optimize/MergeDuplicateChunksPlugin.js

(limited to 'node_modules/webpack/lib/optimize/MergeDuplicateChunksPlugin.js')

diff --git a/node_modules/webpack/lib/optimize/MergeDuplicateChunksPlugin.js b/node_modules/webpack/lib/optimize/MergeDuplicateChunksPlugin.js
new file mode 100644
index 000000000..90df06b51
--- /dev/null
+++ b/node_modules/webpack/lib/optimize/MergeDuplicateChunksPlugin.js
@@ -0,0 +1,33 @@
+/*
+	MIT License http://www.opensource.org/licenses/mit-license.php
+	Author Tobias Koppers @sokra
+*/
+"use strict";
+
+function getChunkIdentifier(chunk) {
+	return chunk.modules.map((m) => {
+		return m.identifier();
+	}).sort().join(", ");
+}
+
+class MergeDuplicateChunksPlugin {
+
+	apply(compiler) {
+		compiler.plugin("compilation", (compilation) => {
+			compilation.plugin("optimize-chunks-basic", (chunks) => {
+				const map = {};
+				chunks.slice().forEach((chunk) => {
+					if(chunk.hasRuntime() || chunk.hasEntryModule()) return;
+					const ident = getChunkIdentifier(chunk);
+					if(map[ident]) {
+						if(map[ident].integrate(chunk, "duplicate"))
+							chunks.splice(chunks.indexOf(chunk), 1);
+						return;
+					}
+					map[ident] = chunk;
+				});
+			});
+		});
+	}
+}
+module.exports = MergeDuplicateChunksPlugin;
-- 
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