feat(css): redirect named locals to default export when named export is disabled

lib/css/CssParser.js

@@ -1030,6 +1030,11 @@ class CssParser extends Parser {
 
 		module.buildInfo.strict = true;
 		module.buildMeta.exportsType = this.namedExports ? "namespace" : "default";
+
+		if (!this.namedExports) {
+			module.buildMeta.defaultObject = "redirect";
+		}
+
 		module.addDependency(new StaticExportsDependency([], true));
 		return state;
 	}

test/configCases/css/default-exports-parser-options/index.js

@@ -0,0 +1,19 @@
+import * as style1 from "./style.module.css?namespace";
+import style2 from "./style.module.css?default";
+import { foo } from "./style.module.css?named";
+
+it("should able to import with default and named exports", () => {
+	expect(style1.default).toEqual(nsObj({ foo: '-_style_module_css_namespace-foo' }));
+	expect(style1.foo).toEqual("-_style_module_css_namespace-foo");
+	expect(style2).toEqual(nsObj({ foo: '-_style_module_css_default-foo' }));
+	expect(foo).toEqual("-_style_module_css_named-foo");
+});
+
+it("should able to import with different default and namex dynamic export", (done) => {
+	import("./style.module.css?namespace").then((style1) => {
+		expect(style1.default).toEqual(nsObj({ foo: '-_style_module_css_namespace-foo' }));
+		expect(style1.foo).toEqual('-_style_module_css_namespace-foo');
+
+		done();
+	}, done)
+});

test/configCases/css/default-exports-parser-options/style.module.css

@@ -0,0 +1,3 @@
+.foo {
+	color: red;
+}

test/configCases/css/default-exports-parser-options/webpack.config.js

@@ -0,0 +1,20 @@
+/** @type {import("../../../../").Configuration} */
+module.exports = {
+	target: "node",
+	mode: "development",
+	devtool: false,
+	module: {
+		rules: [
+			{
+				test: /\.css/,
+				parser: {
+					namedExports: false
+				},
+				type: "css/module"
+			}
+		]
+	},
+	experiments: {
+		css: true
+	}
+};

test/configCases/css/named-exports-parser-options/index.js

@@ -15,7 +15,10 @@ it("should able to import with different namedExports (async)", (done) => {
 		import("./style.module.css?named"),
 	]).then(([style1, style2, style3]) => {
 		expect(style1).toEqual(nsObj({ class: '-_style_module_css-class' }));
-		expect(style2).toEqual(nsObj({ default: nsObj({ class: '-_style_module_css_default-class' }) }));
+		expect(style2).toEqual(nsObj({
+			class: "-_style_module_css_default-class",
+			default: nsObj({ class: '-_style_module_css_default-class' })
+		}));
 		expect(style3).toEqual(nsObj({ class: '-_style_module_css_named-class' }));
 		done()
 	}, done)