From de98e0b232509d5f40c135d540a70e415272ff85 Mon Sep 17 00:00:00 2001
From: Florian Dold <florian.dold@gmail.com>
Date: Wed, 3 May 2017 15:35:00 +0200
Subject: node_modules

---
 node_modules/html-webpack-plugin/lib/compiler.js | 112 +++++++++++++++++++++++
 1 file changed, 112 insertions(+)
 create mode 100644 node_modules/html-webpack-plugin/lib/compiler.js

(limited to 'node_modules/html-webpack-plugin/lib/compiler.js')

diff --git a/node_modules/html-webpack-plugin/lib/compiler.js b/node_modules/html-webpack-plugin/lib/compiler.js
new file mode 100644
index 000000000..9c8a22434
--- /dev/null
+++ b/node_modules/html-webpack-plugin/lib/compiler.js
@@ -0,0 +1,112 @@
+/*
+ * This file uses webpack to compile a template with a child compiler.
+ *
+ * [TEMPLATE] -> [JAVASCRIPT]
+ *
+ */
+'use strict';
+var Promise = require('bluebird');
+var _ = require('lodash');
+var path = require('path');
+var NodeTemplatePlugin = require('webpack/lib/node/NodeTemplatePlugin');
+var NodeTargetPlugin = require('webpack/lib/node/NodeTargetPlugin');
+var LoaderTargetPlugin = require('webpack/lib/LoaderTargetPlugin');
+var LibraryTemplatePlugin = require('webpack/lib/LibraryTemplatePlugin');
+var 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"
+  var outputOptions = {
+    filename: outputFilename,
+    publicPath: compilation.outputOptions.publicPath
+  };
+  // Store the result of the parent compilation before we start the child compilation
+  var assetsBeforeCompilation = _.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
+  var compilerName = getCompilerName(context, outputFilename);
+  var childCompiler = compilation.createChildCompiler(compilerName, outputOptions);
+  childCompiler.context = context;
+  childCompiler.apply(
+    new NodeTemplatePlugin(outputOptions),
+    new NodeTargetPlugin(),
+    new LibraryTemplatePlugin('HTML_WEBPACK_PLUGIN_RESULT', 'var'),
+    new SingleEntryPlugin(this.context, template),
+    new LoaderTargetPlugin('node')
+  );
+
+  // 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
+  childCompiler.plugin('compilation', function (compilation) {
+    if (compilation.cache) {
+      if (!compilation.cache[compilerName]) {
+        compilation.cache[compilerName] = {};
+      }
+      compilation.cache = compilation.cache[compilerName];
+    }
+  });
+
+  // Compile and return a promise
+  return new Promise(function (resolve, reject) {
+    childCompiler.runAsChild(function (err, entries, childCompilation) {
+      // Resolve / reject the promise
+      if (childCompilation && childCompilation.errors && childCompilation.errors.length) {
+        var errorDetails = childCompilation.errors.map(function (error) {
+          return 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
+        var outputName = 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) {
+  var absolutePath = path.resolve(context, filename);
+  var relativePath = path.relative(context, absolutePath);
+  return 'html-webpack-plugin for "' + (absolutePath.length < relativePath.length ? absolutePath : relativePath) + '"';
+}
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