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node_modules/html-webpack-plugin/lib/chunksorter.js

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+'use strict';
+
+const toposort = require('toposort');
+const _ = require('lodash');
+
+/**
+  Sorts dependencies between chunks by their "parents" attribute.
+
+  This function sorts chunks based on their dependencies with each other.
+  The parent relation between chunks as generated by Webpack for each chunk
+  is used to define a directed (and hopefully acyclic) graph, which is then
+  topologically sorted in order to retrieve the correct order in which
+  chunks need to be embedded into HTML. A directed edge in this graph is
+  describing a "is parent of" relationship from a chunk to another (distinct)
+  chunk. Thus topological sorting orders chunks from bottom-layer chunks to
+  highest level chunks that use the lower-level chunks.
+
+  @param {Array} chunks an array of chunks as generated by the html-webpack-plugin.
+  - For webpack < 4, It is assumed that each entry contains at least the properties
+  "id" (containing the chunk id) and "parents" (array containing the ids of the
+  parent chunks).
+  - For webpack 4+ the see the chunkGroups param for parent-child relationships
+
+  @param {Array} chunks an array of ChunkGroups that has a getParents method.
+  Each ChunkGroup contains a list of chunks in order.
+
+  @return {Array} A topologically sorted version of the input chunks
+*/
+module.exports.dependency = (chunks, options, compilation) => {
+  const chunkGroups = compilation.chunkGroups;
+  if (!chunks) {
+    return chunks;
+  }
+
+  // We build a map (chunk-id -> chunk) for faster access during graph building.
+  const nodeMap = {};
+
+  chunks.forEach(chunk => {
+    nodeMap[chunk.id] = chunk;
+  });
+
+  // Next, we add an edge for each parent relationship into the graph
+  let edges = [];
+
+  if (chunkGroups) {
+    // Add an edge for each parent (parent -> child)
+    edges = chunkGroups.reduce((result, chunkGroup) => result.concat(
+      Array.from(chunkGroup.parentsIterable, parentGroup => [parentGroup, chunkGroup])
+    ), []);
+    const sortedGroups = toposort.array(chunkGroups, edges);
+    // flatten chunkGroup into chunks
+    const sortedChunks = sortedGroups
+      .reduce((result, chunkGroup) => result.concat(chunkGroup.chunks), [])
+      .map(chunk => // use the chunk from the list passed in, since it may be a filtered list
+    nodeMap[chunk.id])
+      .filter((chunk, index, self) => {
+        // make sure exists (ie excluded chunks not in nodeMap)
+        const exists = !!chunk;
+        // make sure we have a unique list
+        const unique = self.indexOf(chunk) === index;
+        return exists && unique;
+      });
+    return sortedChunks;
+  } else {
+    // before webpack 4 there was no chunkGroups
+    chunks.forEach(chunk => {
+      if (chunk.parents) {
+        // Add an edge for each parent (parent -> child)
+        chunk.parents.forEach(parentId => {
+          // webpack2 chunk.parents are chunks instead of string id(s)
+          const parentChunk = _.isObject(parentId) ? parentId : nodeMap[parentId];
+          // If the parent chunk does not exist (e.g. because of an excluded chunk)
+          // we ignore that parent
+          if (parentChunk) {
+            edges.push([parentChunk, chunk]);
+          }
+        });
+      }
+    });
+    // We now perform a topological sorting on the input chunks and built edges
+    return toposort.array(chunks, edges);
+  }
+};
+
+/**
+ * Sorts the chunks based on the chunk id.
+ *
+ * @param  {Array} chunks the list of chunks to sort
+ * @return {Array} The sorted list of chunks
+ */
+module.exports.id = chunks => chunks.sort(function orderEntryLast (a, b) {
+  if (a.entry !== b.entry) {
+    return b.entry ? 1 : -1;
+  } else {
+    return b.id - a.id;
+  }
+});
+
+/**
+ * Performs identity mapping (no-sort).
+ * @param  {Array} chunks the chunks to sort
+ * @return {Array} The sorted chunks
+ */
+module.exports.none = chunks => chunks;
+
+/**
+ * Sort manually by the chunks
+ * @param  {Array} chunks the chunks to sort
+ * @return {Array} The sorted chunks
+ */
+module.exports.manual = (chunks, options) => {
+  const specifyChunks = options.chunks;
+  const chunksResult = [];
+  let filterResult = [];
+  if (Array.isArray(specifyChunks)) {
+    for (var i = 0; i < specifyChunks.length; i++) {
+      filterResult = chunks.filter(chunk => {
+        if (chunk.names[0] && chunk.names[0] === specifyChunks[i]) {
+          return true;
+        }
+        return false;
+      });
+      filterResult.length > 0 && chunksResult.push(filterResult[0]);
+    }
+  }
+  return chunksResult;
+};
+
+/**
+ * Defines the default sorter.
+ */
+module.exports.auto = module.exports.id;
+
+// In webpack 2 the ids have been flipped.
+// Therefore the id sort doesn't work the same way as it did for webpack 1
+// Luckily the dependency sort is working as expected
+if (Number(require('webpack/package.json').version.split('.')[0]) > 1) {
+  module.exports.auto = module.exports.dependency;
+}

node_modules/html-webpack-plugin/lib/compiler.js

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+/*
+ * This file uses webpack to compile a template with a child compiler.
+ *
+ * [TEMPLATE] -> [JAVASCRIPT]
+ *
+ */
+'use strict';
+const path = require('path');
+const NodeTemplatePlugin = require('webpack/lib/node/NodeTemplatePlugin');
+const NodeTargetPlugin = require('webpack/lib/node/NodeTargetPlugin');
+const LoaderTargetPlugin = require('webpack/lib/LoaderTargetPlugin');
+const LibraryTemplatePlugin = require('webpack/lib/LibraryTemplatePlugin');
+const SingleEntryPlugin = require('webpack/lib/SingleEntryPlugin');
+
+/**
+ * Compiles the template into a nodejs factory, adds its to the compilation.assets
+ * and returns a promise of the result asset object.
+ *
+ * @param template relative path to the template file
+ * @param context path context
+ * @param outputFilename the file name
+ * @param compilation The webpack compilation object
+ *
+ * Returns an object:
+ * {
+ *  hash: {String} - Base64 hash of the file
+ *  content: {String} - Javascript executable code of the template
+ * }
+ *
+ */
+module.exports.compileTemplate = function compileTemplate (template, context, outputFilename, compilation) {
+  // The entry file is just an empty helper as the dynamic template
+  // require is added in "loader.js"
+  const outputOptions = {
+    filename: outputFilename,
+    publicPath: compilation.outputOptions.publicPath
+  };
+  // Store the result of the parent compilation before we start the child compilation
+  const assetsBeforeCompilation = Object.assign({}, compilation.assets[outputOptions.filename]);
+  // Create an additional child compiler which takes the template
+  // and turns it into an Node.JS html factory.
+  // This allows us to use loaders during the compilation
+  const compilerName = getCompilerName(context, outputFilename);
+  const childCompiler = compilation.createChildCompiler(compilerName, outputOptions);
+  childCompiler.context = context;
+  new NodeTemplatePlugin(outputOptions).apply(childCompiler);
+  new NodeTargetPlugin().apply(childCompiler);
+  new LibraryTemplatePlugin('HTML_WEBPACK_PLUGIN_RESULT', 'var').apply(childCompiler);
+
+  // Using undefined as name for the SingleEntryPlugin causes a unexpected output as described in
+  // https://github.com/jantimon/html-webpack-plugin/issues/895
+  // Using a string as a name for the SingleEntryPlugin causes problems with HMR as described in
+  // https://github.com/jantimon/html-webpack-plugin/issues/900
+  // Until the HMR issue is fixed we keep the ugly output:
+  new SingleEntryPlugin(this.context, template, undefined).apply(childCompiler);
+
+  new LoaderTargetPlugin('node').apply(childCompiler);
+
+  // Fix for "Uncaught TypeError: __webpack_require__(...) is not a function"
+  // Hot module replacement requires that every child compiler has its own
+  // cache. @see https://github.com/ampedandwired/html-webpack-plugin/pull/179
+
+  // Backwards compatible version of: childCompiler.hooks.compilation
+  (childCompiler.hooks ? childCompiler.hooks.compilation.tap.bind(childCompiler.hooks.compilation, 'HtmlWebpackPlugin') : childCompiler.plugin.bind(childCompiler, 'compilation'))(compilation => {
+    if (compilation.cache) {
+      if (!compilation.cache[compilerName]) {
+        compilation.cache[compilerName] = {};
+      }
+      compilation.cache = compilation.cache[compilerName];
+    }
+  });
+
+  // Compile and return a promise
+  return new Promise((resolve, reject) => {
+    childCompiler.runAsChild((err, entries, childCompilation) => {
+      // Resolve / reject the promise
+      if (childCompilation && childCompilation.errors && childCompilation.errors.length) {
+        const errorDetails = childCompilation.errors.map(error => error.message + (error.error ? ':\n' + error.error : '')).join('\n');
+        reject(new Error('Child compilation failed:\n' + errorDetails));
+      } else if (err) {
+        reject(err);
+      } else {
+        // Replace [hash] placeholders in filename
+        // In webpack 4 the plugin interface changed, so check for available fns
+        const outputName = compilation.mainTemplate.getAssetPath
+          ? compilation.mainTemplate.hooks.assetPath.call(outputOptions.filename, {
+            hash: childCompilation.hash,
+            chunk: entries[0]
+          })
+          : compilation.mainTemplate.applyPluginsWaterfall(
+              'asset-path',
+              outputOptions.filename,
+            {
+              hash: childCompilation.hash,
+              chunk: entries[0]
+            });
+
+        // Restore the parent compilation to the state like it
+        // was before the child compilation
+        compilation.assets[outputName] = assetsBeforeCompilation[outputName];
+        if (assetsBeforeCompilation[outputName] === undefined) {
+          // If it wasn't there - delete it
+          delete compilation.assets[outputName];
+        }
+        resolve({
+          // Hash of the template entry point
+          hash: entries[0].hash,
+          // Output name
+          outputName: outputName,
+          // Compiled code
+          content: childCompilation.assets[outputName].source()
+        });
+      }
+    });
+  });
+};
+
+/**
+ * Returns the child compiler name e.g. 'html-webpack-plugin for "index.html"'
+ */
+function getCompilerName (context, filename) {
+  const absolutePath = path.resolve(context, filename);
+  const relativePath = path.relative(context, absolutePath);
+  return 'html-webpack-plugin for "' + (absolutePath.length < relativePath.length ? absolutePath : relativePath) + '"';
+}

node_modules/html-webpack-plugin/lib/errors.js

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+'use strict';
+const PrettyError = require('pretty-error');
+const prettyError = new PrettyError();
+prettyError.withoutColors();
+prettyError.skipPackage(['html-plugin-evaluation']);
+prettyError.skipNodeFiles();
+prettyError.skip(function (traceLine) {
+  return traceLine.path === 'html-plugin-evaluation';
+});
+
+module.exports = function (err, context) {
+  return {
+    toHtml: function () {
+      return 'Html Webpack Plugin:\n<pre>\n' + this.toString() + '</pre>';
+    },
+    toJsonHtml: function () {
+      return JSON.stringify(this.toHtml());
+    },
+    toString: function () {
+      return prettyError.render(err).replace(/webpack:\/\/\/\./g, context);
+    }
+  };
+};

node_modules/html-webpack-plugin/lib/loader.js

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+/* This loader renders the template with underscore if no other loader was found */
+'use strict';
+
+const _ = require('lodash');
+const loaderUtils = require('loader-utils');
+
+module.exports = function (source) {
+  if (this.cacheable) {
+    this.cacheable();
+  }
+  const allLoadersButThisOne = this.loaders.filter(function (loader) {
+    // Loader API changed from `loader.module` to `loader.normal` in Webpack 2.
+    return (loader.module || loader.normal) !== module.exports;
+  });
+  // This loader shouldn't kick in if there is any other loader
+  if (allLoadersButThisOne.length > 0) {
+    return source;
+  }
+  // Skip .js files
+  if (/\.js$/.test(this.resourcePath)) {
+    return source;
+  }
+
+  // The following part renders the tempalte with lodash as aminimalistic loader
+  //
+  // Get templating options
+  const options = this.query !== '' ? loaderUtils.parseQuery(this.query) : {};
+  const template = _.template(source, _.defaults(options, { variable: 'data' }));
+  // Require !!lodash - using !! will disable all loaders (e.g. babel)
+  return 'var _ = require(' + loaderUtils.stringifyRequest(this, '!!' + require.resolve('lodash')) + ');' +
+    'module.exports = function (templateParams) { with(templateParams) {' +
+      // Execute the lodash template
+      'return (' + template.source + ')();' +
+    '}}';
+};