fix: issue 701

src/index.js

@@ -535,7 +535,11 @@ class MiniCssExtractPlugin {
           ? Array.from(this.getChunkModules(chunk, chunkGraph)).filter(
               (module) => module.type === MODULE_TYPE
             )
-          : chunkGraph.getChunkModulesIterableBySourceType(chunk, MODULE_TYPE);
+          : chunkGraph.getOrderedChunkModulesIterableBySourceType(
+              chunk,
+              MODULE_TYPE,
+              webpack.util.comparators.compareModulesByIdentifier
+            );
 
         if (modules) {
           const { hashFunction, hashDigest, hashDigestLength } = outputOptions;

test/cases/content-entries-with-same-import/expected/1.a2e2caac15fbc316194f.css

@@ -0,0 +1,8 @@
+.a {
+  width: 100px;
+}
+
+.b {
+  width: 100px;
+}
+

test/cases/content-entries-with-same-import/expected/2.a2e2caac15fbc316194f.css

@@ -0,0 +1,8 @@
+.b {
+  width: 100px;
+}
+
+.a {
+  width: 100px;
+}
+

test/cases/content-entries-with-same-import/index.js

@@ -0,0 +1,7 @@
+const app1 = import('./one');
+const app2 = import('./two');
+
+// eslint-disable-next-line no-console
+console.log(app1);
+// eslint-disable-next-line no-console
+console.log(app2);

test/cases/content-entries-with-same-import/one.js

@@ -0,0 +1,4 @@
+import './style1.css';
+import './style2.css';
+
+export default 'one';

test/cases/content-entries-with-same-import/style1.css

@@ -0,0 +1,3 @@
+.a {
+  width: 100px;
+}

test/cases/content-entries-with-same-import/style2.css

@@ -0,0 +1,3 @@
+.b {
+  width: 100px;
+}

test/cases/content-entries-with-same-import/two.js

@@ -0,0 +1,4 @@
+import './style2.css';
+import './style1.css';
+
+export default 'two';

test/cases/content-entries-with-same-import/webpack.config.js

@@ -0,0 +1,21 @@
+import Self from '../../../src';
+
+module.exports = {
+  entry: './index.js',
+  module: {
+    rules: [
+      {
+        test: /\.css$/,
+        use: [Self.loader, 'css-loader'],
+      },
+    ],
+  },
+  output: {
+    filename: '[name].[contenthash].js',
+  },
+  plugins: [
+    new Self({
+      filename: '[name].[contenthash].css',
+    }),
+  ],
+};