From ab7ecb30ee08abd719a7ab4d79bde498cd01e90c Mon Sep 17 00:00:00 2001
From: Tobias Koppers <tobias.koppers@googlemail.com>
Date: Tue, 26 Jun 2018 15:27:44 +0200
Subject: [PATCH] fixes #7499

---
 lib/optimize/ConcatenatedModule.js                     |  1 +
 .../missing-module-7499/example/constants.js           |  1 +
 .../side-effects/missing-module-7499/example/index.js  |  2 ++
 .../missing-module-7499/example/package.json           |  3 +++
 test/cases/side-effects/missing-module-7499/index.js   | 10 ++++++++++
 test/cases/side-effects/missing-module-7499/lazy.js    |  5 +++++
 6 files changed, 22 insertions(+)
 create mode 100644 test/cases/side-effects/missing-module-7499/example/constants.js
 create mode 100644 test/cases/side-effects/missing-module-7499/example/index.js
 create mode 100644 test/cases/side-effects/missing-module-7499/example/package.json
 create mode 100644 test/cases/side-effects/missing-module-7499/index.js
 create mode 100644 test/cases/side-effects/missing-module-7499/lazy.js

diff --git a/lib/optimize/ConcatenatedModule.js b/lib/optimize/ConcatenatedModule.js
index 2ec0d4bc775..2c44fa028b5 100644
--- a/lib/optimize/ConcatenatedModule.js
+++ b/lib/optimize/ConcatenatedModule.js
@@ -281,6 +281,7 @@ class ConcatenatedModule extends Module {
 
 		// Info from Factory
 		this.rootModule = rootModule;
+		this.factoryMeta = rootModule.factoryMeta;
 
 		// Info from Compilation
 		this.index = rootModule.index;
diff --git a/test/cases/side-effects/missing-module-7499/example/constants.js b/test/cases/side-effects/missing-module-7499/example/constants.js
new file mode 100644
index 00000000000..9b857576f70
--- /dev/null
+++ b/test/cases/side-effects/missing-module-7499/example/constants.js
@@ -0,0 +1 @@
+export const hello = 'world'
diff --git a/test/cases/side-effects/missing-module-7499/example/index.js b/test/cases/side-effects/missing-module-7499/example/index.js
new file mode 100644
index 00000000000..a06738b7396
--- /dev/null
+++ b/test/cases/side-effects/missing-module-7499/example/index.js
@@ -0,0 +1,2 @@
+import * as constants from './constants'
+export { constants }
diff --git a/test/cases/side-effects/missing-module-7499/example/package.json b/test/cases/side-effects/missing-module-7499/example/package.json
new file mode 100644
index 00000000000..a43829151e1
--- /dev/null
+++ b/test/cases/side-effects/missing-module-7499/example/package.json
@@ -0,0 +1,3 @@
+{
+  "sideEffects": false
+}
diff --git a/test/cases/side-effects/missing-module-7499/index.js b/test/cases/side-effects/missing-module-7499/index.js
new file mode 100644
index 00000000000..714aabf74b4
--- /dev/null
+++ b/test/cases/side-effects/missing-module-7499/index.js
@@ -0,0 +1,10 @@
+import './example'
+
+it("should run correctly", function() {
+	return import('./lazy').then(lazy => {
+		expect(lazy.default()).toEqual({
+			hello: "world",
+			[Symbol.toStringTag]: "Module"
+		});
+	})
+});
diff --git a/test/cases/side-effects/missing-module-7499/lazy.js b/test/cases/side-effects/missing-module-7499/lazy.js
new file mode 100644
index 00000000000..f916eaa5b10
--- /dev/null
+++ b/test/cases/side-effects/missing-module-7499/lazy.js
@@ -0,0 +1,5 @@
+import { constants } from './example'
+
+export default function getConstants() {
+	return constants;
+}