feat: support named exports with any characters

package.json

@@ -68,7 +68,7 @@
     "bootstrap": "^4.6.2",
     "cross-env": "^7.0.3",
     "cspell": "^6.31.1",
-    "css-loader": "^6.9.0",
+    "css-loader": "^6.10.0",
     "del": "^6.0.0",
     "del-cli": "^4.0.0",
     "es-check": "^7.1.0",

src/loader.js

@@ -245,22 +245,44 @@ function pitch(request) {
       return;
     }
 
-    const result = locals
-      ? namedExport
-        ? Object.keys(locals)
+    const result = (function makeResult() {
+      if (locals) {
+        if (namedExport) {
+          const identifiers = Array.from(
+            (function* generateIdentifiers() {
+              let identifierId = 0;
+
+              for (const key of Object.keys(locals)) {
+                identifierId += 1;
+
+                yield [`_${identifierId.toString(16)}`, key];
+              }
+            })()
+          );
+
+          const localsString = identifiers
             .map(
-              (key) =>
-                `\nexport var ${key} = ${stringifyLocal(
+              ([id, key]) =>
+                `\nvar ${id} = ${stringifyLocal(
                   /** @type {Locals} */ (locals)[key]
                 )};`
             )
-            .join("")
-        : `\n${
-            esModule ? "export default" : "module.exports ="
-          } ${JSON.stringify(locals)};`
-      : esModule
-      ? `\nexport {};`
-      : "";
+            .join("");
+          const exportsString = `export { ${identifiers
+            .map(([id, key]) => `${id} as ${JSON.stringify(key)}`)
+            .join(", ")} }`;
+
+          return `${localsString}\n${exportsString}\n`;
+        }
+
+        return `\n${
+          esModule ? "export default" : "module.exports = "
+        } ${JSON.stringify(locals)};`;
+      } else if (esModule) {
+        return "\nexport {};";
+      }
+      return "";
+    })();
 
     let resultSource = `// extracted by ${MiniCssExtractPlugin.pluginName}`;
 

test/cases/custom-loader-with-functional-exports/expected/main.js

@@ -7,12 +7,14 @@
 
 __webpack_require__.r(__webpack_exports__);
 /* harmony export */ __webpack_require__.d(__webpack_exports__, {
-/* harmony export */   cnA: () => (/* binding */ cnA),
-/* harmony export */   cnB: () => (/* binding */ cnB)
+/* harmony export */   cnA: () => (/* binding */ _1),
+/* harmony export */   cnB: () => (/* binding */ _2)
 /* harmony export */ });
 // extracted by mini-css-extract-plugin
-var cnA = () => "class-name-a";
-var cnB = () => "class-name-b";
+var _1 = () => "class-name-a";
+var _2 = () => "class-name-b";
+
+
 
 /***/ })
 /******/ 	]);

test/cases/es-module-concatenation-modules/expected/main.js

@@ -41,21 +41,21 @@ __webpack_require__.r(__webpack_exports__);
 __webpack_require__.d(__webpack_exports__, {
   a: () => (/* reexport */ a_namespaceObject),
   b: () => (/* reexport */ b_namespaceObject),
-  c: () => (/* reexport */ c)
+  c: () => (/* reexport */ c_1)
 });
 
 // NAMESPACE OBJECT: ./a.css
 var a_namespaceObject = {};
 __webpack_require__.r(a_namespaceObject);
 __webpack_require__.d(a_namespaceObject, {
-  a: () => (a)
+  a: () => (_1)
 });
 
 // NAMESPACE OBJECT: ./b.css
 var b_namespaceObject = {};
 __webpack_require__.r(b_namespaceObject);
 __webpack_require__.d(b_namespaceObject, {
-  b: () => (b)
+  b: () => (b_1)
 });
 
 // NAMESPACE OBJECT: ./index.js
@@ -64,18 +64,24 @@ __webpack_require__.r(index_namespaceObject);
 __webpack_require__.d(index_namespaceObject, {
   a: () => (a_namespaceObject),
   b: () => (b_namespaceObject),
-  c: () => (c)
+  c: () => (c_1)
 });
 
 ;// CONCATENATED MODULE: ./a.css
 // extracted by mini-css-extract-plugin
-var a = "foo__a";
+var _1 = "foo__a";
+
+
 ;// CONCATENATED MODULE: ./b.css
 // extracted by mini-css-extract-plugin
-var b = "foo__b";
+var b_1 = "foo__b";
+
+
 ;// CONCATENATED MODULE: ./c.css
 // extracted by mini-css-extract-plugin
-var c = "foo__c";
+var c_1 = "foo__c";
+
+
 ;// CONCATENATED MODULE: ./index.js
 /* eslint-disable import/no-namespace */
 

test/cases/es-named-export-as-is-output-module/expected/main.css

@@ -0,0 +1,12 @@
+.Xh041yLR4iCP4RGjge50 {
+  background: red;
+}
+
+.NMuRsxoDwvW8BhSXhFAY {
+  color: green;
+}
+
+.ayWIv09rPsAqE2JznIsI {
+  color: blue;
+}
+

test/cases/es-named-export-as-is-output-module/expected/main.mjs

@@ -0,0 +1,87 @@
+/******/ var __webpack_modules__ = ([
+/* 0 */,
+/* 1 */
+/***/ ((__unused_webpack_module, __webpack_exports__, __webpack_require__) => {
+
+__webpack_require__.r(__webpack_exports__);
+/* harmony export */ __webpack_require__.d(__webpack_exports__, {
+/* harmony export */   "a-class": () => (/* binding */ _1),
+/* harmony export */   b__class: () => (/* binding */ _2),
+/* harmony export */   cClass: () => (/* binding */ _3)
+/* harmony export */ });
+// extracted by mini-css-extract-plugin
+var _1 = "Xh041yLR4iCP4RGjge50";
+var _2 = "NMuRsxoDwvW8BhSXhFAY";
+var _3 = "ayWIv09rPsAqE2JznIsI";
+
+
+
+/***/ })
+/******/ ]);
+/************************************************************************/
+/******/ // The module cache
+/******/ var __webpack_module_cache__ = {};
+/******/ 
+/******/ // The require function
+/******/ function __webpack_require__(moduleId) {
+/******/ 	// Check if module is in cache
+/******/ 	var cachedModule = __webpack_module_cache__[moduleId];
+/******/ 	if (cachedModule !== undefined) {
+/******/ 		return cachedModule.exports;
+/******/ 	}
+/******/ 	// Create a new module (and put it into the cache)
+/******/ 	var module = __webpack_module_cache__[moduleId] = {
+/******/ 		// no module.id needed
+/******/ 		// no module.loaded needed
+/******/ 		exports: {}
+/******/ 	};
+/******/ 
+/******/ 	// Execute the module function
+/******/ 	__webpack_modules__[moduleId](module, module.exports, __webpack_require__);
+/******/ 
+/******/ 	// Return the exports of the module
+/******/ 	return module.exports;
+/******/ }
+/******/ 
+/************************************************************************/
+/******/ /* webpack/runtime/define property getters */
+/******/ (() => {
+/******/ 	// define getter functions for harmony exports
+/******/ 	__webpack_require__.d = (exports, definition) => {
+/******/ 		for(var key in definition) {
+/******/ 			if(__webpack_require__.o(definition, key) && !__webpack_require__.o(exports, key)) {
+/******/ 				Object.defineProperty(exports, key, { enumerable: true, get: definition[key] });
+/******/ 			}
+/******/ 		}
+/******/ 	};
+/******/ })();
+/******/ 
+/******/ /* webpack/runtime/hasOwnProperty shorthand */
+/******/ (() => {
+/******/ 	__webpack_require__.o = (obj, prop) => (Object.prototype.hasOwnProperty.call(obj, prop))
+/******/ })();
+/******/ 
+/******/ /* webpack/runtime/make namespace object */
+/******/ (() => {
+/******/ 	// define __esModule on exports
+/******/ 	__webpack_require__.r = (exports) => {
+/******/ 		if(typeof Symbol !== 'undefined' && Symbol.toStringTag) {
+/******/ 			Object.defineProperty(exports, Symbol.toStringTag, { value: 'Module' });
+/******/ 		}
+/******/ 		Object.defineProperty(exports, '__esModule', { value: true });
+/******/ 	};
+/******/ })();
+/******/ 
+/************************************************************************/
+var __webpack_exports__ = {};
+// This entry need to be wrapped in an IIFE because it need to be isolated against other modules in the chunk.
+(() => {
+__webpack_require__.r(__webpack_exports__);
+/* harmony import */ var _style_css__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(1);
+
+
+// eslint-disable-next-line no-console
+console.log({ css: _style_css__WEBPACK_IMPORTED_MODULE_0__["default"], aClass: _style_css__WEBPACK_IMPORTED_MODULE_0__["a-class"], bClass: _style_css__WEBPACK_IMPORTED_MODULE_0__.b__class, cClass: _style_css__WEBPACK_IMPORTED_MODULE_0__.cClass });
+
+})();
+

test/cases/es-named-export-as-is-output-module/index.js

@@ -0,0 +1,8 @@
+import css, {
+  "a-class" as aClass,
+  "b__class" as bClass,
+  cClass,
+} from "./style.css";
+
+// eslint-disable-next-line no-console
+console.log({ css, aClass, bClass, cClass });

test/cases/es-named-export-as-is-output-module/style.css

@@ -0,0 +1,11 @@
+.a-class {
+  background: red;
+}
+
+.b__class {
+  color: green;
+}
+
+.cClass {
+  color: blue;
+}

test/cases/es-named-export-as-is-output-module/webpack.config.js

@@ -0,0 +1,38 @@
+import Self from "../../../src";
+
+module.exports = {
+  entry: "./index.js",
+  module: {
+    rules: [
+      {
+        test: /\.css$/,
+        use: [
+          {
+            loader: Self.loader,
+          },
+          {
+            loader: "css-loader",
+            options: {
+              esModule: true,
+              modules: {
+                namedExport: true,
+                exportLocalsConvention: "asIs",
+              },
+            },
+          },
+        ],
+      },
+    ],
+  },
+  output: {
+    module: true,
+  },
+  experiments: {
+    outputModule: true,
+  },
+  plugins: [
+    new Self({
+      filename: "[name].css",
+    }),
+  ],
+};

test/cases/es-named-export-as-is/expected/main.css

@@ -0,0 +1,12 @@
+.Xh041yLR4iCP4RGjge50 {
+  background: red;
+}
+
+.NMuRsxoDwvW8BhSXhFAY {
+  color: green;
+}
+
+.ayWIv09rPsAqE2JznIsI {
+  color: blue;
+}
+