From f7ffed8f3edf89ab8fed33ca6c554a3276748e86 Mon Sep 17 00:00:00 2001
From: Tim Sebastian <tim.sebastian@gmail.com>
Date: Tue, 20 Jun 2017 22:47:38 +1000
Subject: [PATCH] allow to set chunks and use it in ConcatenatedModule

---
 lib/Module.js                      | 4 ++++
 lib/optimize/ConcatenatedModule.js | 2 +-
 2 files changed, 5 insertions(+), 1 deletion(-)

diff --git a/lib/Module.js b/lib/Module.js
index 5a69eaabdb6..72400725751 100644
--- a/lib/Module.js
+++ b/lib/Module.js
@@ -74,6 +74,10 @@ class Module extends DependenciesBlock {
 		super.unseal();
 	}
 
+	setChunks(chunks) {
+		this._chunks = new SortableSet(chunks, sortById);
+	}
+
 	addChunk(chunk) {
 		this._chunks.add(chunk);
 		this._chunksDebugIdent = undefined;
diff --git a/lib/optimize/ConcatenatedModule.js b/lib/optimize/ConcatenatedModule.js
index fdbb5f00cdd..851dc536678 100644
--- a/lib/optimize/ConcatenatedModule.js
+++ b/lib/optimize/ConcatenatedModule.js
@@ -130,13 +130,13 @@ function getPathInAst(ast, node) {
 class ConcatenatedModule extends Module {
 	constructor(rootModule, modules) {
 		super();
+		super.setChunks(rootModule._chunks);
 		this.rootModule = rootModule;
 		this.modules = modules;
 		this.usedExports = rootModule.usedExports;
 		this.providedExports = rootModule.providedExports;
 		this.optimizationBailout = rootModule.optimizationBailout;
 		this.used = rootModule.used;
-		this._chunks = new SortedSet(rootModule._chunks, Module.sortById);
 		this.index = rootModule.index;
 		this.index2 = rootModule.index2;
 		this.depth = rootModule.depth;