Fix cjs

src/index.js

@@ -1,19 +1,19 @@
 /* eslint-disable class-methods-use-this */
 
-import path from "path";
+const path = require("path");
 
-import { validate } from "schema-utils";
+const { validate } = require("schema-utils");
 
-import schema from "./plugin-options.json";
-import {
+const schema = require("./plugin-options.json");
+const {
   trueFn,
   MODULE_TYPE,
   AUTO_PUBLIC_PATH,
   ABSOLUTE_PUBLIC_PATH,
   SINGLE_DOT_PATH_SEGMENT,
   compareModulesByIdentifier,
   getUndoPath,
-} from "./utils";
+} = require("./utils");
 
 /** @typedef {import("schema-utils/declarations/validate").Schema} Schema */
 /** @typedef {import("webpack").Compiler} Compiler */
@@ -69,8 +69,8 @@ import {
 
 /** @typedef {any} TODO */
 
-export const pluginName = "mini-css-extract-plugin";
-export const pluginSymbol = Symbol(pluginName);
+const pluginName = "mini-css-extract-plugin";
+const pluginSymbol = Symbol(pluginName);
 
 const DEFAULT_FILENAME = "[name].css";
 const TYPES = new Set([MODULE_TYPE]);
@@ -480,6 +480,11 @@ class MiniCssExtractPlugin {
       baseDataPath: "options",
     });
 
+    /**
+     * @private
+     * @type {WeakMap<Chunk, Set<TODO>>}
+     * @private
+     */
     this._sortedModulesCache = new WeakMap();
 
     /**
@@ -1049,6 +1054,7 @@ class MiniCssExtractPlugin {
     let usedModules = this._sortedModulesCache.get(chunk);
 
     if (usedModules || !modules) {
+      // @ts-ignore
       return usedModules;
     }
 
@@ -1119,7 +1125,8 @@ class MiniCssExtractPlugin {
      * @param {Module} m
      * @returns {boolean}
      */
-    const unusedModulesFilter = (m) => !usedModules.has(m);
+    const unusedModulesFilter = (m) =>
+      !(/** @type {Set<Module>} */ (usedModules).has(m));
 
     while (usedModules.size < modulesList.length) {
       let success = false;
@@ -1129,6 +1136,7 @@ class MiniCssExtractPlugin {
       // get first module where dependencies are fulfilled
       for (const list of modulesByChunkGroup) {
         // skip and remove already added modules
+        // @ts-ignore
         while (list.length > 0 && usedModules.has(list[list.length - 1])) {
           list.pop();
         }
@@ -1151,7 +1159,7 @@ class MiniCssExtractPlugin {
 
           if (failedDeps.length === 0) {
             // use this module and remove it from list
-            usedModules.add(list.pop());
+            usedModules.add(/** @type {Module & { content: Buffer, media: string, sourceMap?: Buffer, supports?: string, layer?: string }} */ (list.pop()));
             success = true;
             break;
           }
@@ -1215,12 +1223,12 @@ class MiniCssExtractPlugin {
           );
         }
 
-        usedModules.add(fallbackModule);
+        usedModules.add(/** @type {Module & { content: Buffer, media: string, sourceMap?: Buffer, supports?: string, layer?: string }} */ (fallbackModule));
       }
     }
 
     this._sortedModulesCache.set(chunk, usedModules);
-
+    
     return usedModules;
   }
 
@@ -1356,6 +1364,8 @@ class MiniCssExtractPlugin {
   }
 }
 
+MiniCssExtractPlugin.pluginName = pluginName;
+MiniCssExtractPlugin.pluginSymbol = pluginSymbol;
 MiniCssExtractPlugin.loader = require.resolve("./loader");
 
-export default MiniCssExtractPlugin;
+module.exports = MiniCssExtractPlugin;

src/loader.js

@@ -1,16 +1,16 @@
-import path from "path";
+const path = require("path");
 
-import {
+const {
   findModuleById,
   evalModuleCode,
   AUTO_PUBLIC_PATH,
   ABSOLUTE_PUBLIC_PATH,
   SINGLE_DOT_PATH_SEGMENT,
   stringifyRequest,
-} from "./utils";
-import schema from "./loader-options.json";
+} = require("./utils");
+const schema = require("./loader-options.json");
 
-import MiniCssExtractPlugin, { pluginName, pluginSymbol } from "./index";
+const MiniCssExtractPlugin = require("./index");
 
 /** @typedef {import("schema-utils/declarations/validate").Schema} Schema */
 /** @typedef {import("webpack").Compiler} Compiler */
@@ -65,11 +65,13 @@ function hotLoader(content, context) {
  * @this {import("webpack").LoaderContext<LoaderOptions>}
  * @param {string} request
  */
-export function pitch(request) {
+function pitch(request) {
   // @ts-ignore
   const options = this.getOptions(/** @type {Schema} */ (schema));
   const callback = this.async();
-  const optionsFromPlugin = /** @type {TODO} */ (this)[pluginSymbol];
+  const optionsFromPlugin = /** @type {TODO} */ (this)[
+    MiniCssExtractPlugin.pluginSymbol
+  ];
 
   if (!optionsFromPlugin) {
     callback(
@@ -240,7 +242,7 @@ export function pitch(request) {
       ? `\nexport {};`
       : "";
 
-    let resultSource = `// extracted by ${pluginName}`;
+    let resultSource = `// extracted by ${MiniCssExtractPlugin.pluginName}`;
 
     resultSource += this.hot
       ? hotLoader(result, { context: this.context, options, locals })
@@ -332,7 +334,7 @@ export function pitch(request) {
   const childCompiler =
     /** @type {Compilation} */
     (this._compilation).createChildCompiler(
-      `${pluginName} ${request}`,
+      `${MiniCssExtractPlugin.pluginName} ${request}`,
       outputOptions
     );
 
@@ -377,52 +379,58 @@ export function pitch(request) {
   const { NormalModule } = webpack;
 
   childCompiler.hooks.thisCompilation.tap(
-    `${pluginName} loader`,
+    `${MiniCssExtractPlugin.pluginName} loader`,
     /**
      * @param {Compilation} compilation
      */
     (compilation) => {
       const normalModuleHook =
         NormalModule.getCompilationHooks(compilation).loader;
 
-      normalModuleHook.tap(`${pluginName} loader`, (loaderContext, module) => {
-        if (module.request === request) {
-          // eslint-disable-next-line no-param-reassign
-          module.loaders = loaders.map((loader) => {
-            return {
-              type: null,
-              // @ts-ignore
-              loader: loader.path,
-              options: loader.options,
-              ident: loader.ident,
-            };
-          });
+      normalModuleHook.tap(
+        `${MiniCssExtractPlugin.pluginName} loader`,
+        (loaderContext, module) => {
+          if (module.request === request) {
+            // eslint-disable-next-line no-param-reassign
+            module.loaders = loaders.map((loader) => {
+              return {
+                type: null,
+                // @ts-ignore
+                loader: loader.path,
+                options: loader.options,
+                ident: loader.ident,
+              };
+            });
+          }
         }
-      });
+      );
     }
   );
 
   /** @type {string | Buffer} */
   let source;
 
   childCompiler.hooks.compilation.tap(
-    pluginName,
+    MiniCssExtractPlugin.pluginName,
     /**
      * @param {Compilation} compilation
      */
     (compilation) => {
-      compilation.hooks.processAssets.tap(pluginName, () => {
-        source =
-          compilation.assets[childFilename] &&
-          compilation.assets[childFilename].source();
-
-        // Remove all chunk assets
-        compilation.chunks.forEach((chunk) => {
-          chunk.files.forEach((file) => {
-            compilation.deleteAsset(file);
+      compilation.hooks.processAssets.tap(
+        MiniCssExtractPlugin.pluginName,
+        () => {
+          source =
+            compilation.assets[childFilename] &&
+            compilation.assets[childFilename].source();
+
+          // Remove all chunk assets
+          compilation.chunks.forEach((chunk) => {
+            chunk.files.forEach((file) => {
+              compilation.deleteAsset(file);
+            });
           });
-        });
-      });
+        }
+      );
     }
   );
 
@@ -478,5 +486,4 @@ export function pitch(request) {
   });
 }
 
-// eslint-disable-next-line func-names
-export default function () {}
+module.exports = { default: function loader() {}, pitch }

src/utils.js

@@ -1,5 +1,5 @@
-import NativeModule from "module";
-import path from "path";
+const NativeModule = require("module");
+const path = require("path");
 
 /** @typedef {import("webpack").Compilation} Compilation */
 /** @typedef {import("webpack").Module} Module */
@@ -204,7 +204,7 @@ function getUndoPath(filename, outputPath, enforceRelative) {
     : append;
 }
 
-export {
+module.exports = {
   trueFn,
   findModuleById,
   evalModuleCode,