mini-css-extract-plugin/dist/index.js

"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.default = exports.pluginSymbol = exports.pluginName = void 0;

var _schemaUtils = require("schema-utils");

var _identifier = require("webpack/lib/util/identifier");

var _pluginOptions = _interopRequireDefault(require("./plugin-options.json"));

var _utils = require("./utils");

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

/* eslint-disable class-methods-use-this */
const pluginName = "mini-css-extract-plugin";
exports.pluginName = pluginName;
const pluginSymbol = Symbol(pluginName);
exports.pluginSymbol = pluginSymbol;
const DEFAULT_FILENAME = "[name].css";
const TYPES = new Set([_utils.MODULE_TYPE]);
const CODE_GENERATION_RESULT = {
  sources: new Map(),
  runtimeRequirements: new Set()
};
/**
 * @type WeakMap<webpack, CssModule>
 */

const cssModuleCache = new WeakMap();
/**
 * @type WeakMap<webpack, CssDependency>
 */

const cssDependencyCache = new WeakMap();
const registered = new WeakSet();

class MiniCssExtractPlugin {
  static getCssModule(webpack) {
    /**
     * Prevent creation of multiple CssModule classes to allow other integrations to get the current CssModule.
     */
    if (cssModuleCache.has(webpack)) {
      return cssModuleCache.get(webpack);
    }

    class CssModule extends webpack.Module {
      constructor({
        context,
        identifier,
        identifierIndex,
        content,
        layer,
        supports,
        media,
        sourceMap,
        assets,
        assetsInfo
      }) {
        super(_utils.MODULE_TYPE, context);
        this.id = "";
        this._context = context;
        this._identifier = identifier;
        this._identifierIndex = identifierIndex;
        this.content = content;
        this.layer = layer;
        this.supports = supports;
        this.media = media;
        this.sourceMap = sourceMap;
        this.assets = assets;
        this.assetsInfo = assetsInfo;
        this._needBuild = true;
      } // no source() so webpack 4 doesn't do add stuff to the bundle


      size() {
        return this.content.length;
      }

      identifier() {
        return `css|${this._identifier}|${this._identifierIndex}`;
      }

      readableIdentifier(requestShortener) {
        return `css ${requestShortener.shorten(this._identifier)}${this._identifierIndex ? ` (${this._identifierIndex})` : ""}`;
      } // eslint-disable-next-line class-methods-use-this


      getSourceTypes() {
        return TYPES;
      } // eslint-disable-next-line class-methods-use-this


      codeGeneration() {
        return CODE_GENERATION_RESULT;
      }

      nameForCondition() {
        const resource = this._identifier.split("!").pop();

        const idx = resource.indexOf("?");

        if (idx >= 0) {
          return resource.substring(0, idx);
        }

        return resource;
      }

      updateCacheModule(module) {
        if (this.content !== module.content || this.layer !== module.layer || this.supports !== module.supports || this.media !== module.media || this.sourceMap !== module.sourceMap || this.assets !== module.assets || this.assetsInfo !== module.assetsInfo) {
          this._needBuild = true;
          this.content = module.content;
          this.layer = module.layer;
          this.supports = module.supports;
          this.media = module.media;
          this.sourceMap = module.sourceMap;
          this.assets = module.assets;
          this.assetsInfo = module.assetsInfo;
        }
      } // eslint-disable-next-line class-methods-use-this


      needRebuild() {
        return this._needBuild;
      } // eslint-disable-next-line class-methods-use-this


      needBuild(context, callback) {
        callback(null, this._needBuild);
      }

      build(options, compilation, resolver, fileSystem, callback) {
        this.buildInfo = {
          assets: this.assets,
          assetsInfo: this.assetsInfo,
          cacheable: true,
          hash: this._computeHash(compilation.outputOptions.hashFunction)
        };
        this.buildMeta = {};
        this._needBuild = false;
        callback();
      }

      _computeHash(hashFunction) {
        const hash = webpack.util.createHash(hashFunction);
        hash.update(this.content);

        if (this.layer) {
          hash.update(this.layer);
        }

        hash.update(this.supports || "");
        hash.update(this.media || "");
        hash.update(this.sourceMap || "");
        return hash.digest("hex");
      }

      updateHash(hash, context) {
        super.updateHash(hash, context);
        hash.update(this.buildInfo.hash);
      }

      serialize(context) {
        const {
          write
        } = context;
        write(this._context);
        write(this._identifier);
        write(this._identifierIndex);
        write(this.content);
        write(this.layer);
        write(this.supports);
        write(this.media);
        write(this.sourceMap);
        write(this.assets);
        write(this.assetsInfo);
        write(this._needBuild);
        super.serialize(context);
      }

      deserialize(context) {
        this._needBuild = context.read();
        super.deserialize(context);
      }

    }

    cssModuleCache.set(webpack, CssModule);
    webpack.util.serialization.register(CssModule, "mini-css-extract-plugin/dist/CssModule", null, {
      serialize(instance, context) {
        instance.serialize(context);
      },

      deserialize(context) {
        const {
          read
        } = context;
        const contextModule = read();
        const identifier = read();
        const identifierIndex = read();
        const content = read();
        const layer = read();
        const supports = read();
        const media = read();
        const sourceMap = read();
        const assets = read();
        const assetsInfo = read();
        const dep = new CssModule({
          context: contextModule,
          identifier,
          identifierIndex,
          content,
          layer,
          supports,
          media,
          sourceMap,
          assets,
          assetsInfo
        });
        dep.deserialize(context);
        return dep;
      }

    });
    return CssModule;
  }

  static getCssDependency(webpack) {
    /**
     * Prevent creation of multiple CssDependency classes to allow other integrations to get the current CssDependency.
     */
    if (cssDependencyCache.has(webpack)) {
      return cssDependencyCache.get(webpack);
    } // eslint-disable-next-line no-shadow


    class CssDependency extends webpack.Dependency {
      constructor({
        identifier,
        content,
        layer,
        supports,
        media,
        sourceMap
      }, context, identifierIndex) {
        super();
        this.identifier = identifier;
        this.identifierIndex = identifierIndex;
        this.content = content;
        this.layer = layer;
        this.supports = supports;
        this.media = media;
        this.sourceMap = sourceMap;
        this.context = context; // eslint-disable-next-line no-undefined

        this.assets = undefined; // eslint-disable-next-line no-undefined

        this.assetsInfo = undefined;
      }

      getResourceIdentifier() {
        return `css-module-${this.identifier}-${this.identifierIndex}`;
      } // eslint-disable-next-line class-methods-use-this


      getModuleEvaluationSideEffectsState() {
        return webpack.ModuleGraphConnection.TRANSITIVE_ONLY;
      }

      serialize(context) {
        const {
          write
        } = context;
        write(this.identifier);
        write(this.content);
        write(this.layer);
        write(this.supports);
        write(this.media);
        write(this.sourceMap);
        write(this.context);
        write(this.identifierIndex);
        write(this.assets);
        write(this.assetsInfo);
        super.serialize(context);
      }

      deserialize(context) {
        super.deserialize(context);
      }

    }

    cssDependencyCache.set(webpack, CssDependency);
    webpack.util.serialization.register(CssDependency, "mini-css-extract-plugin/dist/CssDependency", null, {
      serialize(instance, context) {
        instance.serialize(context);
      },

      deserialize(context) {
        const {
          read
        } = context;
        const dep = new CssDependency({
          identifier: read(),
          content: read(),
          layer: read(),
          supports: read(),
          media: read(),
          sourceMap: read()
        }, read(), read());
        const assets = read();
        const assetsInfo = read();
        dep.assets = assets;
        dep.assetsInfo = assetsInfo;
        dep.deserialize(context);
        return dep;
      }

    });
    return CssDependency;
  }

  constructor(options = {}) {
    (0, _schemaUtils.validate)(_pluginOptions.default, options, {
      baseDataPath: "options"
    });
    this._sortedModulesCache = new WeakMap();
    this.options = Object.assign({
      filename: DEFAULT_FILENAME,
      ignoreOrder: false,
      // TODO remove in the next major release
      // eslint-disable-next-line no-undefined
      experimentalUseImportModule: undefined,
      runtime: true
    }, options);
    this.runtimeOptions = {
      insert: options.insert,
      linkType: // Todo in next major release set default to "false"
      options.linkType === true || typeof options.linkType === "undefined" ? "text/css" : options.linkType,
      attributes: options.attributes
    };

    if (!this.options.chunkFilename) {
      const {
        filename
      } = this.options;

      if (typeof filename !== "function") {
        const hasName = filename.includes("[name]");
        const hasId = filename.includes("[id]");
        const hasChunkHash = filename.includes("[chunkhash]");
        const hasContentHash = filename.includes("[contenthash]"); // Anything changing depending on chunk is fine

        if (hasChunkHash || hasContentHash || hasName || hasId) {
          this.options.chunkFilename = filename;
        } else {
          // Otherwise prefix "[id]." in front of the basename to make it changing
          this.options.chunkFilename = filename.replace(/(^|\/)([^/]*(?:\?|$))/, "$1[id].$2");
        }
      } else {
        this.options.chunkFilename = "[id].css";
      }
    }
  }
  /** @param {import("webpack").Compiler} compiler */


  apply(compiler) {
    const {
      webpack
    } = compiler;

    if (this.options.experimentalUseImportModule) {
      if (typeof compiler.options.experiments.executeModule === "undefined") {
        // eslint-disable-next-line no-param-reassign
        compiler.options.experiments.executeModule = true;
      }
    } // TODO bug in webpack, remove it after it will be fixed
    // webpack tries to `require` loader firstly when serializer doesn't found


    if (!registered.has(webpack)) {
      registered.add(webpack);
      webpack.util.serialization.registerLoader(/^mini-css-extract-plugin\//, _utils.trueFn);
    }

    const {
      splitChunks
    } = compiler.options.optimization;

    if (splitChunks) {
      if (splitChunks.defaultSizeTypes.includes("...")) {
        splitChunks.defaultSizeTypes.push(_utils.MODULE_TYPE);
      }
    }

    const CssModule = MiniCssExtractPlugin.getCssModule(webpack);
    const CssDependency = MiniCssExtractPlugin.getCssDependency(webpack);
    const {
      NormalModule
    } = compiler.webpack;
    compiler.hooks.compilation.tap(pluginName, compilation => {
      const {
        loader: normalModuleHook
      } = NormalModule.getCompilationHooks(compilation);
      normalModuleHook.tap(pluginName, loaderContext => {
        // eslint-disable-next-line no-param-reassign
        loaderContext[pluginSymbol] = {
          experimentalUseImportModule: this.options.experimentalUseImportModule
        };
      });
    });
    compiler.hooks.thisCompilation.tap(pluginName, compilation => {
      class CssModuleFactory {
        // eslint-disable-next-line class-methods-use-this
        create({
          dependencies: [dependency]
        }, callback) {
          callback(null, new CssModule(dependency));
        }

      }

      compilation.dependencyFactories.set(CssDependency, new CssModuleFactory());

      class CssDependencyTemplate {
        // eslint-disable-next-line class-methods-use-this
        apply() {}

      }

      compilation.dependencyTemplates.set(CssDependency, new CssDependencyTemplate());
      compilation.hooks.renderManifest.tap(pluginName, (result, {
        chunk
      }) => {
        const {
          chunkGraph
        } = compilation;
        const {
          HotUpdateChunk
        } = webpack; // We don't need hot update chunks for css
        // We will use the real asset instead to update

        if (chunk instanceof HotUpdateChunk) {
          return;
        }

        const renderedModules = Array.from(this.getChunkModules(chunk, chunkGraph)).filter(module => module.type === _utils.MODULE_TYPE);
        const filenameTemplate = chunk.canBeInitial() ? this.options.filename : this.options.chunkFilename;

        if (renderedModules.length > 0) {
          result.push({
            render: () => this.renderContentAsset(compiler, compilation, chunk, renderedModules, compilation.runtimeTemplate.requestShortener, filenameTemplate, {
              contentHashType: _utils.MODULE_TYPE,
              chunk
            }),
            filenameTemplate,
            pathOptions: {
              chunk,
              contentHashType: _utils.MODULE_TYPE
            },
            identifier: `${pluginName}.${chunk.id}`,
            hash: chunk.contentHash[_utils.MODULE_TYPE]
          });
        }
      });
      compilation.hooks.contentHash.tap(pluginName, chunk => {
        const {
          outputOptions,
          chunkGraph
        } = compilation;
        const modules = this.sortModules(compilation, chunk, chunkGraph.getChunkModulesIterableBySourceType(chunk, _utils.MODULE_TYPE), compilation.runtimeTemplate.requestShortener);

        if (modules) {
          const {
            hashFunction,
            hashDigest,
            hashDigestLength
          } = outputOptions;
          const {
            createHash
          } = compiler.webpack.util;
          const hash = createHash(hashFunction);

          for (const m of modules) {
            hash.update(chunkGraph.getModuleHash(m, chunk.runtime));
          } // eslint-disable-next-line no-param-reassign


          chunk.contentHash[_utils.MODULE_TYPE] = hash.digest(hashDigest).substring(0, hashDigestLength);
        }
      }); // All the code below is dedicated to the runtime and can be skipped when the `runtime` option is `false`

      if (!this.options.runtime) {
        return;
      }

      const {
        Template,
        RuntimeGlobals,
        RuntimeModule,
        runtime
      } = webpack; // eslint-disable-next-line no-shadow

      const getCssChunkObject = (mainChunk, compilation) => {
        const obj = {};
        const {
          chunkGraph
        } = compilation;

        for (const chunk of mainChunk.getAllAsyncChunks()) {
          const modules = chunkGraph.getOrderedChunkModulesIterable(chunk, _utils.compareModulesByIdentifier);

          for (const module of modules) {
            if (module.type === _utils.MODULE_TYPE) {
              obj[chunk.id] = 1;
              break;
            }
          }
        }

        return obj;
      };

      class CssLoadingRuntimeModule extends RuntimeModule {
        constructor(runtimeRequirements, runtimeOptions) {
          super("css loading", 10);
          this.runtimeRequirements = runtimeRequirements;
          this.runtimeOptions = runtimeOptions;
        }

        generate() {
          const {
            chunk,
            runtimeRequirements
          } = this;
          const {
            runtimeTemplate,
            outputOptions: {
              crossOriginLoading
            }
          } = this.compilation;
          const chunkMap = getCssChunkObject(chunk, this.compilation);
          const withLoading = runtimeRequirements.has(RuntimeGlobals.ensureChunkHandlers) && Object.keys(chunkMap).length > 0;
          const withHmr = runtimeRequirements.has(RuntimeGlobals.hmrDownloadUpdateHandlers);

          if (!withLoading && !withHmr) {
            return null;
          }

          return Template.asString([`var createStylesheet = ${runtimeTemplate.basicFunction("chunkId, fullhref, resolve, reject", ['var linkTag = document.createElement("link");', this.runtimeOptions.attributes ? Template.asString(Object.entries(this.runtimeOptions.attributes).map(entry => {
            const [key, value] = entry;
            return `linkTag.setAttribute(${JSON.stringify(key)}, ${JSON.stringify(value)});`;
          })) : "", 'linkTag.rel = "stylesheet";', this.runtimeOptions.linkType ? `linkTag.type = ${JSON.stringify(this.runtimeOptions.linkType)};` : "", `var onLinkComplete = ${runtimeTemplate.basicFunction("event", ["// avoid mem leaks.", "linkTag.onerror = linkTag.onload = null;", "if (event.type === 'load') {", Template.indent(["resolve();"]), "} else {", Template.indent(["var errorType = event && (event.type === 'load' ? 'missing' : event.type);", "var realHref = event && event.target && event.target.href || fullhref;", 'var err = new Error("Loading CSS chunk " + chunkId + " failed.\\n(" + realHref + ")");', 'err.code = "CSS_CHUNK_LOAD_FAILED";', "err.type = errorType;", "err.request = realHref;", "linkTag.parentNode.removeChild(linkTag)", "reject(err);"]), "}"])}`, "linkTag.onerror = linkTag.onload = onLinkComplete;", "linkTag.href = fullhref;", crossOriginLoading ? Template.asString([`if (linkTag.href.indexOf(window.location.origin + '/') !== 0) {`, Template.indent(`linkTag.crossOrigin = ${JSON.stringify(crossOriginLoading)};`), "}"]) : "", typeof this.runtimeOptions.insert !== "undefined" ? typeof this.runtimeOptions.insert === "function" ? `(${this.runtimeOptions.insert.toString()})(linkTag)` : Template.asString([`var target = document.querySelector("${this.runtimeOptions.insert}");`, `target.parentNode.insertBefore(linkTag, target.nextSibling);`]) : Template.asString(["document.head.appendChild(linkTag);"]), "return linkTag;"])};`, `var findStylesheet = ${runtimeTemplate.basicFunction("href, fullhref", ['var existingLinkTags = document.getElementsByTagName("link");', "for(var i = 0; i < existingLinkTags.length; i++) {", Template.indent(["var tag = existingLinkTags[i];", 'var dataHref = tag.getAttribute("data-href") || tag.getAttribute("href");', 'if(tag.rel === "stylesheet" && (dataHref === href || dataHref === fullhref)) return tag;']), "}", 'var existingStyleTags = document.getElementsByTagName("style");', "for(var i = 0; i < existingStyleTags.length; i++) {", Template.indent(["var tag = existingStyleTags[i];", 'var dataHref = tag.getAttribute("data-href");', "if(dataHref === href || dataHref === fullhref) return tag;"]), "}"])};`, `var loadStylesheet = ${runtimeTemplate.basicFunction("chunkId", `return new Promise(${runtimeTemplate.basicFunction("resolve, reject", [`var href = ${RuntimeGlobals.require}.miniCssF(chunkId);`, `var fullhref = ${RuntimeGlobals.publicPath} + href;`, "if(findStylesheet(href, fullhref)) return resolve();", "createStylesheet(chunkId, fullhref, resolve, reject);"])});`)}`, withLoading ? Template.asString(["// object to store loaded CSS chunks", "var installedCssChunks = {", Template.indent(chunk.ids.map(id => `${JSON.stringify(id)}: 0`).join(",\n")), "};", "", `${RuntimeGlobals.ensureChunkHandlers}.miniCss = ${runtimeTemplate.basicFunction("chunkId, promises", [`var cssChunks = ${JSON.stringify(chunkMap)};`, "if(installedCssChunks[chunkId]) promises.push(installedCssChunks[chunkId]);", "else if(installedCssChunks[chunkId] !== 0 && cssChunks[chunkId]) {", Template.indent([`promises.push(installedCssChunks[chunkId] = loadStylesheet(chunkId).then(${runtimeTemplate.basicFunction("", "installedCssChunks[chunkId] = 0;")}, ${runtimeTemplate.basicFunction("e", ["delete installedCssChunks[chunkId];", "throw e;"])}));`]), "}"])};`]) : "// no chunk loading", "", withHmr ? Template.asString(["var oldTags = [];", "var newTags = [];", `var applyHandler = ${runtimeTemplate.basicFunction("options", [`return { dispose: ${runtimeTemplate.basicFunction("", ["for(var i = 0; i < oldTags.length; i++) {", Template.indent(["var oldTag = oldTags[i];", "if(oldTag.parentNode) oldTag.parentNode.removeChild(oldTag);"]), "}", "oldTags.length = 0;"])}, apply: ${runtimeTemplate.basicFunction("", ['for(var i = 0; i < newTags.length; i++) newTags[i].rel = "stylesheet";', "newTags.length = 0;"])} };`])}`, `${RuntimeGlobals.hmrDownloadUpdateHandlers}.miniCss = ${runtimeTemplate.basicFunction("chunkIds, removedChunks, removedModules, promises, applyHandlers, updatedModulesList", ["applyHandlers.push(applyHandler);", `chunkIds.forEach(${runtimeTemplate.basicFunction("chunkId", [`var href = ${RuntimeGlobals.require}.miniCssF(chunkId);`, `var fullhref = ${RuntimeGlobals.publicPath} + href;`, "var oldTag = findStylesheet(href, fullhref);", "if(!oldTag) return;", `promises.push(new Promise(${runtimeTemplate.basicFunction("resolve, reject", [`var tag = createStylesheet(chunkId, fullhref, ${runtimeTemplate.basicFunction("", ['tag.as = "style";', 'tag.rel = "preload";', "resolve();"])}, reject);`, "oldTags.push(oldTag);", "newTags.push(tag);"])}));`])});`])}`]) : "// no hmr"]);
        }

      }

      const enabledChunks = new WeakSet();

      const handler = (chunk, set) => {
        if (enabledChunks.has(chunk)) {
          return;
        }

        enabledChunks.add(chunk);

        if (typeof this.options.chunkFilename === "string" && /\[(full)?hash(:\d+)?\]/.test(this.options.chunkFilename)) {
          set.add(RuntimeGlobals.getFullHash);
        }

        set.add(RuntimeGlobals.publicPath);
        compilation.addRuntimeModule(chunk, new runtime.GetChunkFilenameRuntimeModule(_utils.MODULE_TYPE, "mini-css", `${RuntimeGlobals.require}.miniCssF`, referencedChunk => {
          if (!referencedChunk.contentHash[_utils.MODULE_TYPE]) {
            return false;
          }

          return referencedChunk.canBeInitial() ? this.options.filename : this.options.chunkFilename;
        }, true));
        compilation.addRuntimeModule(chunk, new CssLoadingRuntimeModule(set, this.runtimeOptions));
      };

      compilation.hooks.runtimeRequirementInTree.for(RuntimeGlobals.ensureChunkHandlers).tap(pluginName, handler);
      compilation.hooks.runtimeRequirementInTree.for(RuntimeGlobals.hmrDownloadUpdateHandlers).tap(pluginName, handler);
    });
  }

  getChunkModules(chunk, chunkGraph) {
    return typeof chunkGraph !== "undefined" ? chunkGraph.getOrderedChunkModulesIterable(chunk, _utils.compareModulesByIdentifier) : chunk.modulesIterable;
  }

  sortModules(compilation, chunk, modules, requestShortener) {
    let usedModules = this._sortedModulesCache.get(chunk);

    if (usedModules || !modules) {
      return usedModules;
    }

    const modulesList = [...modules]; // Store dependencies for modules

    const moduleDependencies = new Map(modulesList.map(m => [m, new Set()]));
    const moduleDependenciesReasons = new Map(modulesList.map(m => [m, new Map()])); // Get ordered list of modules per chunk group
    // This loop also gathers dependencies from the ordered lists
    // Lists are in reverse order to allow to use Array.pop()

    const modulesByChunkGroup = Array.from(chunk.groupsIterable, chunkGroup => {
      const sortedModules = modulesList.map(module => {
        return {
          module,
          index: chunkGroup.getModulePostOrderIndex(module)
        };
      }) // eslint-disable-next-line no-undefined
      .filter(item => item.index !== undefined).sort((a, b) => b.index - a.index).map(item => item.module);

      for (let i = 0; i < sortedModules.length; i++) {
        const set = moduleDependencies.get(sortedModules[i]);
        const reasons = moduleDependenciesReasons.get(sortedModules[i]);

        for (let j = i + 1; j < sortedModules.length; j++) {
          const module = sortedModules[j];
          set.add(module);
          const reason = reasons.get(module) || new Set();
          reason.add(chunkGroup);
          reasons.set(module, reason);
        }
      }

      return sortedModules;
    }); // set with already included modules in correct order

    usedModules = new Set();

    const unusedModulesFilter = m => !usedModules.has(m);

    while (usedModules.size < modulesList.length) {
      let success = false;
      let bestMatch;
      let bestMatchDeps; // get first module where dependencies are fulfilled

      for (const list of modulesByChunkGroup) {
        // skip and remove already added modules
        while (list.length > 0 && usedModules.has(list[list.length - 1])) {
          list.pop();
        } // skip empty lists


        if (list.length !== 0) {
          const module = list[list.length - 1];
          const deps = moduleDependencies.get(module); // determine dependencies that are not yet included

          const failedDeps = Array.from(deps).filter(unusedModulesFilter); // store best match for fallback behavior

          if (!bestMatchDeps || bestMatchDeps.length > failedDeps.length) {
            bestMatch = list;
            bestMatchDeps = failedDeps;
          }

          if (failedDeps.length === 0) {
            // use this module and remove it from list
            usedModules.add(list.pop());
            success = true;
            break;
          }
        }
      }

      if (!success) {
        // no module found => there is a conflict
        // use list with fewest failed deps
        // and emit a warning
        const fallbackModule = bestMatch.pop();

        if (!this.options.ignoreOrder) {
          const reasons = moduleDependenciesReasons.get(fallbackModule);
          compilation.warnings.push(new Error([`chunk ${chunk.name || chunk.id} [${pluginName}]`, "Conflicting order. Following module has been added:", ` * ${fallbackModule.readableIdentifier(requestShortener)}`, "despite it was not able to fulfill desired ordering with these modules:", ...bestMatchDeps.map(m => {
            const goodReasonsMap = moduleDependenciesReasons.get(m);
            const goodReasons = goodReasonsMap && goodReasonsMap.get(fallbackModule);
            const failedChunkGroups = Array.from(reasons.get(m), cg => cg.name).join(", ");
            const goodChunkGroups = goodReasons && Array.from(goodReasons, cg => cg.name).join(", ");
            return [` * ${m.readableIdentifier(requestShortener)}`, `   - couldn't fulfill desired order of chunk group(s) ${failedChunkGroups}`, goodChunkGroups && `   - while fulfilling desired order of chunk group(s) ${goodChunkGroups}`].filter(Boolean).join("\n");
          })].join("\n")));
        }

        usedModules.add(fallbackModule);
      }
    }

    this._sortedModulesCache.set(chunk, usedModules);

    return usedModules;
  }

  renderContentAsset(compiler, compilation, chunk, modules, requestShortener, filenameTemplate, pathData) {
    const usedModules = this.sortModules(compilation, chunk, modules, requestShortener);
    const {
      ConcatSource,
      SourceMapSource,
      RawSource
    } = compiler.webpack.sources;
    const source = new ConcatSource();
    const externalsSource = new ConcatSource();

    for (const module of usedModules) {
      let content = module.content.toString();
      const readableIdentifier = module.readableIdentifier(requestShortener);
      const startsWithAtRuleImport = /^@import url/.test(content);
      let header;

      if (compilation.outputOptions.pathinfo) {
        // From https://github.com/webpack/webpack/blob/29eff8a74ecc2f87517b627dee451c2af9ed3f3f/lib/ModuleInfoHeaderPlugin.js#L191-L194
        const reqStr = readableIdentifier.replace(/\*\//g, "*_/");
        const reqStrStar = "*".repeat(reqStr.length);
        const headerStr = `/*!****${reqStrStar}****!*\\\n  !*** ${reqStr} ***!\n  \\****${reqStrStar}****/\n`;
        header = new RawSource(headerStr);
      }

      if (startsWithAtRuleImport) {
        if (typeof header !== "undefined") {
          externalsSource.add(header);
        } // HACK for IE
        // http://stackoverflow.com/a/14676665/1458162


        if (module.media) {
          // insert media into the @import
          // this is rar
          // TODO improve this and parse the CSS to support multiple medias
          content = content.replace(/;|\s*$/, module.media);
        }

        externalsSource.add(content);
        externalsSource.add("\n");
      } else {
        if (typeof header !== "undefined") {
          source.add(header);
        }

        if (module.supports) {
          source.add(`@supports (${module.supports}) {\n`);
        }

        if (module.media) {
          source.add(`@media ${module.media} {\n`);
        }

        const needLayer = typeof module.layer !== "undefined";

        if (needLayer) {
          source.add(`@layer${module.layer.length > 0 ? ` ${module.layer}` : ""} {\n`);
        }

        const {
          path: filename
        } = compilation.getPathWithInfo(filenameTemplate, pathData);
        const undoPath = (0, _identifier.getUndoPath)(filename, compiler.outputPath, false);
        content = content.replace(new RegExp(_utils.ABSOLUTE_PUBLIC_PATH, "g"), "");
        content = content.replace(new RegExp(_utils.SINGLE_DOT_PATH_SEGMENT, "g"), ".");
        content = content.replace(new RegExp(_utils.AUTO_PUBLIC_PATH, "g"), undoPath);

        if (module.sourceMap) {
          source.add(new SourceMapSource(content, readableIdentifier, module.sourceMap.toString()));
        } else {
          source.add(new RawSource(content, readableIdentifier));
        }

        source.add("\n");

        if (needLayer) {
          source.add("}\n");
        }

        if (module.media) {
          source.add("}\n");
        }

        if (module.supports) {
          source.add("}\n");
        }
      }
    }

    return new ConcatSource(externalsSource, source);
  }

}

MiniCssExtractPlugin.loader = require.resolve("./loader");
var _default = MiniCssExtractPlugin;
exports.default = _default;