From eff91fc9913705e83162304e297c2dddaf0b318c Mon Sep 17 00:00:00 2001
From: Adolfo Panizo <adolfo.panizo@gmail.com>
Date: Tue, 6 Mar 2018 12:03:03 +0100
Subject: [PATCH] WIP Making prod script to work

---
 config/webpack.config.prod.js | 193 ++++++++++++++++++++++++++++++++++
 package-lock.json             |  64 +++++++++++
 package.json                  |   6 +-
 3 files changed, 262 insertions(+), 1 deletion(-)
 create mode 100644 config/webpack.config.prod.js

diff --git a/config/webpack.config.prod.js b/config/webpack.config.prod.js
new file mode 100644
index 00000000..3cfe0470
--- /dev/null
+++ b/config/webpack.config.prod.js
@@ -0,0 +1,193 @@
+const autoprefixer = require('autoprefixer');
+const cssvars = require('postcss-simple-vars');
+const webpack = require('webpack');
+
+const HtmlWebpackPlugin = require('html-webpack-plugin');
+const ExtractTextPlugin = require('extract-text-webpack-plugin');
+const ManifestPlugin = require('webpack-manifest-plugin');
+const url = require('url');
+
+var paths = require('./paths');
+var getClientEnvironment = require('./env');
+
+var cssvariables = require(paths.appSrc + '/theme/variables');
+
+const postcssPlugins = [
+  autoprefixer({
+    browsers: [
+      '>1%',
+      'last 4 versions',
+      'Firefox ESR',
+      'not ie < 9', // React doesn't support IE8 anyway
+    ]
+  }),
+  cssvars({
+    variables: function () {
+        return Object.assign({}, cssvariables);
+    },
+    silent: true
+  }),
+];
+
+function ensureSlash(path, needsSlash) {
+  var hasSlash = path.endsWith('/');
+  if (hasSlash && !needsSlash) {
+    return path.substr(path, path.length - 1);
+  } else if (!hasSlash && needsSlash) {
+    return path + '/';
+  } else {
+    return path;
+  }
+}
+
+// We use "homepage" field to infer "public path" at which the app is served.
+// Webpack needs to know it to put the right <script> hrefs into HTML even in
+// single-page apps that may serve index.html for nested URLs like /todos/42.
+// We can't use a relative path in HTML because we don't want to load something
+// like /todos/42/static/js/bundle.7289d.js. We have to know the root.
+var homepagePath = require(paths.appPackageJson).homepage;
+var homepagePathname = homepagePath ? url.parse(homepagePath).pathname : '/';
+// Webpack uses `publicPath` to determine where the app is being served from.
+// It requires a trailing slash, or the file assets will get an incorrect path.
+var publicPath = ensureSlash(homepagePathname, true);
+// `publicUrl` is just like `publicPath`, but we will provide it to our app
+// as %PUBLIC_URL% in `index.html` and `process.env.PUBLIC_URL` in JavaScript.
+// Omit trailing slash as %PUBLIC_PATH%/xyz looks better than %PUBLIC_PATH%xyz.
+var publicUrl = ensureSlash(homepagePathname, false);
+// Get environment variables to inject into our app.
+var env = getClientEnvironment(publicUrl);
+
+// Assert this just to be safe.
+// Development builds of React are slow and not intended for production.
+if (env['process.env'].NODE_ENV !== '"production"') {
+  throw new Error('Production builds must have NODE_ENV=production.');
+}
+
+// This is the production configuration.
+// It compiles slowly and is focused on producing a fast and minimal bundle.
+// The development configuration is different and lives in a separate file.
+module.exports = {
+  mode: 'production',
+  // Don't attempt to continue if there are any errors.
+  bail: true,
+  // We generate sourcemaps in production. This is slow but gives good results.
+  // You can exclude the *.map files from the build during deployment.
+  devtool: 'source-map',
+  // In production, we only want to load the polyfills and the app code.
+  entry: [
+    "babel-polyfill",
+    require.resolve('./polyfills'),
+    paths.appIndexJs
+  ],
+  output: {
+    // The build folder.
+    path: paths.appBuild,
+    // Generated JS file names (with nested folders).
+    // There will be one main bundle, and one file per asynchronous chunk.
+    // We don't currently advertise code splitting but Webpack supports it.
+    filename: 'static/js/[name].[chunkhash:8].js',
+    chunkFilename: 'static/js/[name].[chunkhash:8].chunk.js',
+    // We inferred the "public path" (such as / or /my-project) from homepage.
+    publicPath: publicPath
+  },
+  resolve: {
+    // These are the reasonable defaults supported by the Node ecosystem.
+    // We also include JSX as a common component filename extension to support
+    // some tools, although we do not recommend using it, see:
+    // https://github.com/facebookincubator/create-react-app/issues/290
+    extensions: ['.js', '.json', '.jsx'],
+    alias: {
+      // Support React Native Web
+      // https://www.smashingmagazine.com/2016/08/a-glimpse-into-the-future-with-react-native-for-web/
+      'react-native': 'react-native-web'
+    }
+  },
+
+  module: {
+    rules: [
+      {
+        test: /\.(js|jsx)$/,
+        exclude: /node_modules/,
+        use: {
+          loader: "babel-loader"
+        }
+      },
+      {
+        test: /\.(scss|css)$/,
+        use: ExtractTextPlugin.extract({
+          fallback: 'style-loader',
+          use: [
+            { 
+              loader: 'css-loader',
+              options: {
+                importLoaders: 1,
+                modules: true,
+                minimize: true
+              }
+            },
+            {
+              loader: 'postcss-loader',
+              options: {
+                sourceMap: true,
+                plugins: postcssPlugins,
+              }
+            },
+          ],
+        })
+      },
+      // JSON is not enabled by default in Webpack but both Node and Browserify
+      // allow it implicitly so we also enable it.
+      {
+        test: /\.json$/,
+        loader: 'json-loader'
+      },
+      // "file" loader for svg
+      {
+        test: /\.svg$/,
+        loader: 'file-loader',
+        query: {
+          name: 'static/media/[name].[hash:8].[ext]'
+        }
+      },
+    ]
+  },
+  plugins: [
+    // Generates an `index.html` file with the <script> injected.
+    new HtmlWebpackPlugin({
+      inject: true,
+      template: paths.appHtml,
+      minify: {
+        removeComments: true,
+        collapseWhitespace: true,
+        removeRedundantAttributes: true,
+        useShortDoctype: true,
+        removeEmptyAttributes: true,
+        removeStyleLinkTypeAttributes: true,
+        keepClosingSlash: true,
+        minifyJS: true,
+        minifyCSS: true,
+        minifyURLs: true
+      }
+    }),
+    // Makes some environment variables available to the JS code, for example:
+    // if (process.env.NODE_ENV === 'production') { ... }. See `./env.js`.
+    // It is absolutely essential that NODE_ENV was set to production here.
+    // Otherwise React will be compiled in the very slow development mode.
+    new webpack.DefinePlugin(env),
+    // Note: this won't work without ExtractTextPlugin.extract(..) in `loaders`.
+    new ExtractTextPlugin('static/css/[name].[contenthash:8].css'),
+    // Generate a manifest file which contains a mapping of all asset filenames
+    // to their corresponding output file so that tools can pick it up without
+    // having to parse `index.html`.
+    new ManifestPlugin({
+      fileName: 'asset-manifest.json'
+    })
+  ],
+  // Some libraries import Node modules but don't use them in the browser.
+  // Tell Webpack to provide empty mocks for them so importing them works.
+  node: {
+    fs: 'empty',
+    net: 'empty',
+    tls: 'empty'
+  }
+};
diff --git a/package-lock.json b/package-lock.json
index c9652817..c2ee2b44 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -6119,6 +6119,29 @@
         }
       }
     },
+    "extract-text-webpack-plugin": {
+      "version": "4.0.0-beta.0",
+      "resolved": "https://registry.npmjs.org/extract-text-webpack-plugin/-/extract-text-webpack-plugin-4.0.0-beta.0.tgz",
+      "integrity": "sha512-Hypkn9jUTnFr0DpekNam53X47tXn3ucY08BQumv7kdGgeVUBLq3DJHJTi6HNxv4jl9W+Skxjz9+RnK0sJyqqjA==",
+      "dev": true,
+      "requires": {
+        "async": "2.6.0",
+        "loader-utils": "1.1.0",
+        "schema-utils": "0.4.5",
+        "webpack-sources": "1.1.0"
+      },
+      "dependencies": {
+        "async": {
+          "version": "2.6.0",
+          "resolved": "https://registry.npmjs.org/async/-/async-2.6.0.tgz",
+          "integrity": "sha512-xAfGg1/NTLBBKlHFmnd7PlmUW9KhVQIUuSrYem9xzFUZy13ScvtyGGejaae9iAVRiRq9+Cx7DPFaAAhCpyxyPw==",
+          "dev": true,
+          "requires": {
+            "lodash": "4.17.5"
+          }
+        }
+      }
+    },
     "extsprintf": {
       "version": "1.3.0",
       "resolved": "https://registry.npmjs.org/extsprintf/-/extsprintf-1.3.0.tgz",
@@ -6198,6 +6221,16 @@
         "escape-string-regexp": "1.0.5"
       }
     },
+    "file-loader": {
+      "version": "1.1.11",
+      "resolved": "https://registry.npmjs.org/file-loader/-/file-loader-1.1.11.tgz",
+      "integrity": "sha512-TGR4HU7HUsGg6GCOPJnFk06RhWgEWFLAGWiT6rcD+GRC2keU3s9RGJ+b3Z6/U73jwwNb2gKLJ7YCrp+jvU4ALg==",
+      "dev": true,
+      "requires": {
+        "loader-utils": "1.1.0",
+        "schema-utils": "0.4.5"
+      }
+    },
     "file-type": {
       "version": "5.2.0",
       "resolved": "https://registry.npmjs.org/file-type/-/file-type-5.2.0.tgz",
@@ -9381,6 +9414,12 @@
       "integrity": "sha1-Wx85evx11ne96Lz8Dkfh+aPZqJg=",
       "dev": true
     },
+    "json-loader": {
+      "version": "0.5.7",
+      "resolved": "https://registry.npmjs.org/json-loader/-/json-loader-0.5.7.tgz",
+      "integrity": "sha512-QLPs8Dj7lnf3e3QYS1zkCo+4ZwqOiF9d/nZnYozTISxXWCfNs9yuky5rJw4/W34s7POaNlbZmQGaB5NiXCbP4w==",
+      "dev": true
+    },
     "json-schema": {
       "version": "0.2.3",
       "resolved": "https://registry.npmjs.org/json-schema/-/json-schema-0.2.3.tgz",
@@ -18268,6 +18307,31 @@
         }
       }
     },
+    "webpack-manifest-plugin": {
+      "version": "2.0.0-rc.2",
+      "resolved": "https://registry.npmjs.org/webpack-manifest-plugin/-/webpack-manifest-plugin-2.0.0-rc.2.tgz",
+      "integrity": "sha512-Qeq1YE+3ibb+sQbHyWnlxCtO1s3AsUtaPe2Gd4lJfVgWbgw9IwxUx6WvPPCzp7iWZed8bclPYrC7aS9VOzPAxw==",
+      "dev": true,
+      "requires": {
+        "fs-extra": "0.30.0",
+        "lodash": "4.17.5"
+      },
+      "dependencies": {
+        "fs-extra": {
+          "version": "0.30.0",
+          "resolved": "https://registry.npmjs.org/fs-extra/-/fs-extra-0.30.0.tgz",
+          "integrity": "sha1-8jP/zAjU2n1DLapEl3aYnbHfk/A=",
+          "dev": true,
+          "requires": {
+            "graceful-fs": "4.1.11",
+            "jsonfile": "2.4.0",
+            "klaw": "1.3.1",
+            "path-is-absolute": "1.0.1",
+            "rimraf": "2.6.2"
+          }
+        }
+      }
+    },
     "webpack-sources": {
       "version": "1.1.0",
       "resolved": "https://registry.npmjs.org/webpack-sources/-/webpack-sources-1.1.0.tgz",
diff --git a/package.json b/package.json
index ac189647..a1791dd1 100644
--- a/package.json
+++ b/package.json
@@ -35,8 +35,11 @@
     "css-loader": "^0.28.10",
     "detect-port": "^1.2.2",
     "dotenv": "^5.0.1",
+    "extract-text-webpack-plugin": "^4.0.0-beta.0",
+    "file-loader": "^1.1.11",
     "html-loader": "^0.5.5",
     "html-webpack-plugin": "^3.0.4",
+    "json-loader": "^0.5.7",
     "postcss-loader": "^2.1.1",
     "postcss-simple-vars": "^4.1.0",
     "react": "^16.2.0",
@@ -47,7 +50,8 @@
     "truffle-solidity-loader": "0.0.8",
     "webpack": "^4.0.0",
     "webpack-cli": "^2.0.8",
-    "webpack-dev-server": "^3.1.0"
+    "webpack-dev-server": "^3.1.0",
+    "webpack-manifest-plugin": "^2.0.0-rc.2"
   },
   "dependencies": {
     "final-form": "^4.2.1",