diff --git a/config/env.js b/config/env.js
index c4178db5..211711b2 100644
--- a/config/env.js
+++ b/config/env.js
@@ -1,3 +1,4 @@
+'use strict';
 
 const fs = require('fs');
 const path = require('path');
@@ -6,8 +7,7 @@ const paths = require('./paths');
 // Make sure that including paths.js after env.js will read .env variables.
 delete require.cache[require.resolve('./paths')];
 
-const { NODE_ENV } = process.env;
-
+const NODE_ENV = process.env.NODE_ENV;
 if (!NODE_ENV) {
   throw new Error(
     'The NODE_ENV environment variable is required but was not specified.'
@@ -18,7 +18,6 @@ if (!NODE_ENV) {
 const dotenvFiles = [
   `${paths.dotenv}.${NODE_ENV}.local`,
   `${paths.dotenv}.${NODE_ENV}`,
-
   // Don't include `.env.local` for `test` environment
   // since normally you expect tests to produce the same
   // results for everyone
@@ -31,7 +30,7 @@ const dotenvFiles = [
 // that have already been set.  Variable expansion is supported in .env files.
 // https://github.com/motdotla/dotenv
 // https://github.com/motdotla/dotenv-expand
-dotenvFiles.forEach((dotenvFile) => {
+dotenvFiles.forEach(dotenvFile => {
   if (fs.existsSync(dotenvFile)) {
     require('dotenv-expand')(
       require('dotenv').config({
@@ -43,19 +42,18 @@ dotenvFiles.forEach((dotenvFile) => {
 
 // We support resolving modules according to `NODE_PATH`.
 // This lets you use absolute paths in imports inside large monorepos:
-// https://github.com/facebookincubator/create-react-app/issues/253.
+// https://github.com/facebook/create-react-app/issues/253.
 // It works similar to `NODE_PATH` in Node itself:
 // https://nodejs.org/api/modules.html#modules_loading_from_the_global_folders
 // Note that unlike in Node, only *relative* paths from `NODE_PATH` are honored.
 // Otherwise, we risk importing Node.js core modules into an app instead of Webpack shims.
-// https://github.com/facebookincubator/create-react-app/issues/1023#issuecomment-265344421
+// https://github.com/facebook/create-react-app/issues/1023#issuecomment-265344421
 // We also resolve them to make sure all tools using them work consistently.
 const appDirectory = fs.realpathSync(process.cwd());
-
 process.env.NODE_PATH = (process.env.NODE_PATH || '')
   .split(path.delimiter)
-  .filter((folder) => folder && !path.isAbsolute(folder))
-  .map((folder) => path.resolve(appDirectory, folder))
+  .filter(folder => folder && !path.isAbsolute(folder))
+  .map(folder => path.resolve(appDirectory, folder))
   .join(path.delimiter);
 
 // Grab NODE_ENV and REACT_APP_* environment variables and prepare them to be
@@ -64,19 +62,16 @@ const REACT_APP = /^REACT_APP_/i;
 
 function getClientEnvironment(publicUrl) {
   const raw = Object.keys(process.env)
-    .filter((key) => REACT_APP.test(key))
+    .filter(key => REACT_APP.test(key))
     .reduce(
       (env, key) => {
         env[key] = process.env[key];
-
         return env;
       },
       {
-
         // Useful for determining whether we’re running in production mode.
         // Most importantly, it switches React into the correct mode.
         NODE_ENV: process.env.NODE_ENV || 'development',
-
         // Useful for resolving the correct path to static assets in `public`.
         // For example, <img src={process.env.PUBLIC_URL + '/img/logo.png'} />.
         // This should only be used as an escape hatch. Normally you would put
@@ -84,12 +79,10 @@ function getClientEnvironment(publicUrl) {
         PUBLIC_URL: publicUrl,
       }
     );
-
   // Stringify all values so we can feed into Webpack DefinePlugin
   const stringified = {
     'process.env': Object.keys(raw).reduce((env, key) => {
       env[key] = JSON.stringify(raw[key]);
-
       return env;
     }, {}),
   };
diff --git a/config/jest/cssTransform.js b/config/jest/cssTransform.js
index 4e138d18..8f651148 100644
--- a/config/jest/cssTransform.js
+++ b/config/jest/cssTransform.js
@@ -1,3 +1,4 @@
+'use strict';
 
 // This is a custom Jest transformer turning style imports into empty objects.
 // http://facebook.github.io/jest/docs/en/webpack.html
diff --git a/config/jest/fileTransform.js b/config/jest/fileTransform.js
index 1162d1dd..07010e33 100644
--- a/config/jest/fileTransform.js
+++ b/config/jest/fileTransform.js
@@ -1,3 +1,4 @@
+'use strict';
 
 const path = require('path');
 
@@ -6,6 +7,24 @@ const path = require('path');
 
 module.exports = {
   process(src, filename) {
-    return `module.exports = ${JSON.stringify(path.basename(filename))};`;
+    const assetFilename = JSON.stringify(path.basename(filename));
+
+    if (filename.match(/\.svg$/)) {
+      return `module.exports = {
+        __esModule: true,
+        default: ${assetFilename},
+        ReactComponent: (props) => ({
+          $$typeof: Symbol.for('react.element'),
+          type: 'svg',
+          ref: null,
+          key: null,
+          props: Object.assign({}, props, {
+            children: ${assetFilename}
+          })
+        }),
+      };`;
+    }
+
+    return `module.exports = ${assetFilename};`;
   },
 };
diff --git a/config/paths.js b/config/paths.js
index 875467cd..65bd4599 100644
--- a/config/paths.js
+++ b/config/paths.js
@@ -1,28 +1,28 @@
+'use strict';
 
 const path = require('path');
 const fs = require('fs');
 const url = require('url');
 
 // Make sure any symlinks in the project folder are resolved:
-// https://github.com/facebookincubator/create-react-app/issues/637
+// https://github.com/facebook/create-react-app/issues/637
 const appDirectory = fs.realpathSync(process.cwd());
-const resolveApp = (relativePath) => path.resolve(appDirectory, relativePath);
+const resolveApp = relativePath => path.resolve(appDirectory, relativePath);
 
 const envPublicUrl = process.env.PUBLIC_URL;
 
-function ensureSlash(path, needsSlash) {
-  const hasSlash = path.endsWith('/');
-
+function ensureSlash(inputPath, needsSlash) {
+  const hasSlash = inputPath.endsWith('/');
   if (hasSlash && !needsSlash) {
-    return path.substr(path, path.length - 1);
+    return inputPath.substr(0, inputPath.length - 1);
   } else if (!hasSlash && needsSlash) {
-    return `${path}/`;
+    return `${inputPath}/`;
+  } else {
+    return inputPath;
   }
-
-  return path;
 }
 
-const getPublicUrl = (appPackageJson) =>
+const getPublicUrl = appPackageJson =>
   envPublicUrl || require(appPackageJson).homepage;
 
 // We use `PUBLIC_URL` environment variable or "homepage" field to infer
@@ -33,23 +33,55 @@ const getPublicUrl = (appPackageJson) =>
 // like /todos/42/static/js/bundle.7289d.js. We have to know the root.
 function getServedPath(appPackageJson) {
   const publicUrl = getPublicUrl(appPackageJson);
-  const servedUrl = envPublicUrl || (publicUrl ? url.parse(publicUrl).pathname : '/');
-
+  const servedUrl =
+    envPublicUrl || (publicUrl ? url.parse(publicUrl).pathname : '/');
   return ensureSlash(servedUrl, true);
 }
 
+const moduleFileExtensions = [
+  'web.mjs',
+  'mjs',
+  'web.js',
+  'js',
+  'web.ts',
+  'ts',
+  'web.tsx',
+  'tsx',
+  'json',
+  'web.jsx',
+  'jsx',
+];
+
+// Resolve file paths in the same order as webpack
+const resolveModule = (resolveFn, filePath) => {
+  const extension = moduleFileExtensions.find(extension =>
+    fs.existsSync(resolveFn(`${filePath}.${extension}`))
+  );
+
+  if (extension) {
+    return resolveFn(`${filePath}.${extension}`);
+  }
+
+  return resolveFn(`${filePath}.js`);
+};
+
 // config after eject: we're in ./config/
 module.exports = {
   dotenv: resolveApp('.env'),
+  appPath: resolveApp('.'),
   appBuild: resolveApp('build'),
   appPublic: resolveApp('public'),
   appHtml: resolveApp('public/index.html'),
-  appIndexJs: resolveApp('src/index.js'),
+  appIndexJs: resolveModule(resolveApp, 'src/index'),
   appPackageJson: resolveApp('package.json'),
   appSrc: resolveApp('src'),
+  appTsConfig: resolveApp('tsconfig.json'),
   yarnLockFile: resolveApp('yarn.lock'),
-  testsSetup: resolveApp('src/setupTests.js'),
+  testsSetup: resolveModule(resolveApp, 'src/setupTests'),
+  proxySetup: resolveApp('src/setupProxy.js'),
   appNodeModules: resolveApp('node_modules'),
   publicUrl: getPublicUrl(resolveApp('package.json')),
   servedPath: getServedPath(resolveApp('package.json')),
 };
+
+module.exports.moduleFileExtensions = moduleFileExtensions;
diff --git a/config/polyfills.js b/config/polyfills.js
deleted file mode 100644
index 1e503e8b..00000000
--- a/config/polyfills.js
+++ /dev/null
@@ -1,21 +0,0 @@
-
-if (typeof Promise === 'undefined') {
-  // Rejection tracking prevents a common issue where React gets into an
-  // inconsistent state due to an error, but it gets swallowed by a Promise,
-  // and the user has no idea what causes React's erratic future behavior.
-  require('promise/lib/rejection-tracking').enable();
-  window.Promise = require('promise/lib/es6-extensions.js');
-}
-
-// fetch() polyfill for making API calls.
-require('whatwg-fetch');
-
-// Object.assign() is commonly used with React.
-// It will use the native implementation if it's present and isn't buggy.
-Object.assign = require('object-assign');
-
-// In tests, polyfill requestAnimationFrame since jsdom doesn't provide it yet.
-// We don't polyfill it in the browser--this is user's responsibility.
-if (process.env.NODE_ENV === 'test') {
-  require('raf').polyfill(global);
-}
diff --git a/config/webpack.config.dev.js b/config/webpack.config.dev.js
deleted file mode 100644
index 2a09a3c2..00000000
--- a/config/webpack.config.dev.js
+++ /dev/null
@@ -1,308 +0,0 @@
-
-const path = require('path');
-const autoprefixer = require('autoprefixer');
-const webpack = require('webpack');
-const HtmlWebpackPlugin = require('html-webpack-plugin');
-const CaseSensitivePathsPlugin = require('case-sensitive-paths-webpack-plugin');
-const InterpolateHtmlPlugin = require('react-dev-utils/InterpolateHtmlPlugin');
-const WatchMissingNodeModulesPlugin = require('react-dev-utils/WatchMissingNodeModulesPlugin');
-const eslintFormatter = require('react-dev-utils/eslintFormatter');
-const ModuleScopePlugin = require('react-dev-utils/ModuleScopePlugin');
-const ExtractTextPlugin = require('extract-text-webpack-plugin');
-const getClientEnvironment = require('./env');
-const paths = require('./paths');
-
-// Webpack uses `publicPath` to determine where the app is being served from.
-// In development, we always serve from the root. This makes config easier.
-const publicPath = '/';
-
-// `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.
-const publicUrl = '';
-
-// Get environment variables to inject into our app.
-const env = getClientEnvironment(publicUrl);
-
-const postCssLoader = {
-  loader: require.resolve('postcss-loader'),
-  options: {
-
-    // Necessary for external CSS imports to work
-    // https://github.com/facebookincubator/create-react-app/issues/2677
-    ident: 'postcss',
-    plugins: () => [
-      require('postcss-flexbugs-fixes'),
-      autoprefixer({
-        browsers: [
-          '>1%',
-          'last 4 versions',
-          'Firefox ESR',
-          'not ie < 9',
-        ],
-        flexbox: 'no-2009',
-      }),
-    ],
-  },
-};
-
-// This is the development configuration.
-// It is focused on developer experience and fast rebuilds.
-// The production configuration is different and lives in a separate file.
-module.exports = {
-
-  // You may want 'eval' instead if you prefer to see the compiled output in DevTools.
-  // See the discussion in https://github.com/facebookincubator/create-react-app/issues/343.
-  devtool: 'cheap-module-source-map',
-
-  // These are the "entry points" to our application.
-  // This means they will be the "root" imports that are included in JS bundle.
-  // The first two entry points enable "hot" CSS and auto-refreshes for JS.
-  entry: [
-
-    // We ship a few polyfills by default:
-    require.resolve('./polyfills'),
-
-    // Include an alternative client for WebpackDevServer. A client's job is to
-    // connect to WebpackDevServer by a socket and get notified about changes.
-    // When you save a file, the client will either apply hot updates (in case
-    // of CSS changes), or refresh the page (in case of JS changes). When you
-    // make a syntax error, this client will display a syntax error overlay.
-    // Note: instead of the default WebpackDevServer client, we use a custom one
-    // to bring better experience for Create React App users. You can replace
-    // the line below with these two lines if you prefer the stock client:
-    // require.resolve('webpack-dev-server/client') + '?/',
-    // require.resolve('webpack/hot/dev-server'),
-    require.resolve('react-dev-utils/webpackHotDevClient'),
-
-    // Finally, this is your app's code:
-    paths.appIndexJs,
-
-    // We include the app code last so that if there is a runtime error during
-    // initialization, it doesn't blow up the WebpackDevServer client, and
-    // changing JS code would still trigger a refresh.
-  ],
-  output: {
-
-    // Add /* filename */ comments to generated require()s in the output.
-    pathinfo: true,
-
-    // This does not produce a real file. It's just the virtual path that is
-    // served by WebpackDevServer in development. This is the JS bundle
-    // containing code from all our entry points, and the Webpack runtime.
-    filename: 'static/js/bundle.js',
-
-    // There are also additional JS chunk files if you use code splitting.
-    chunkFilename: 'static/js/[name].chunk.js',
-
-    // This is the URL that app is served from. We use "/" in development.
-    publicPath,
-
-    // Point sourcemap entries to original disk location (format as URL on Windows)
-    devtoolModuleFilenameTemplate: (info) =>
-      path.resolve(info.absoluteResourcePath).replace(/\\/g, '/'),
-  },
-  resolve: {
-
-    // This allows you to set a fallback for where Webpack should look for modules.
-    // We placed these paths second because we want `node_modules` to "win"
-    // if there are any conflicts. This matches Node resolution mechanism.
-    // https://github.com/facebookincubator/create-react-app/issues/253
-    modules: [ 'node_modules', paths.appNodeModules ].concat(
-
-      // It is guaranteed to exist because we tweak it in `env.js`
-      process.env.NODE_PATH.split(path.delimiter).filter(Boolean)
-    ),
-
-    // 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
-    // `web` extension prefixes have been added for better support
-    // for React Native Web.
-    extensions: [ '.web.js', '.mjs', '.js', '.json', '.web.jsx', '.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',
-    },
-    plugins: [
-
-      // Prevents users from importing files from outside of src/ (or node_modules/).
-      // This often causes confusion because we only process files within src/ with babel.
-      // To fix this, we prevent you from importing files out of src/ -- if you'd like to,
-      // please link the files into your node_modules/ and let module-resolution kick in.
-      // Make sure your source files are compiled, as they will not be processed in any way.
-      new ModuleScopePlugin(paths.appSrc, [ paths.appPackageJson ]),
-    ],
-  },
-  module: {
-    strictExportPresence: true,
-    rules: [
-
-      // TODO: Disable require.ensure as it's not a standard language feature.
-      // We are waiting for https://github.com/facebookincubator/create-react-app/issues/2176.
-      // { parser: { requireEnsure: false } },
-
-      // First, run the linter.
-      // It's important to do this before Babel processes the JS.
-      {
-        test: /\.(js|jsx|mjs)$/,
-        enforce: 'pre',
-        use: [
-          {
-            options: {
-              formatter: eslintFormatter,
-              eslintPath: require.resolve('eslint'),
-
-            },
-            loader: require.resolve('eslint-loader'),
-          },
-        ],
-        include: paths.appSrc,
-      },
-      {
-
-        // "oneOf" will traverse all following loaders until one will
-        // match the requirements. When no loader matches it will fall
-        // back to the "file" loader at the end of the loader list.
-        oneOf: [
-
-          // "url" loader works like "file" loader except that it embeds assets
-          // smaller than specified limit in bytes as data URLs to avoid requests.
-          // A missing `test` is equivalent to a match.
-          {
-            test: [ /\.bmp$/, /\.gif$/, /\.jpe?g$/, /\.png$/ ],
-            loader: require.resolve('url-loader'),
-            options: {
-              limit: 10000,
-              name: 'static/media/[name].[hash:8].[ext]',
-            },
-          },
-
-          // Process JS with Babel.
-          {
-            test: /\.(js|jsx|mjs)$/,
-            include: paths.appSrc,
-            loader: require.resolve('babel-loader'),
-            options: {
-
-              // This is a feature of `babel-loader` for webpack (not Babel itself).
-              // It enables caching results in ./node_modules/.cache/babel-loader/
-              // directory for faster rebuilds.
-              cacheDirectory: true,
-            },
-          },
-
-          // "postcss" loader applies autoprefixer to our CSS.
-          // "css" loader resolves paths in CSS and adds assets as dependencies.
-          // "style" loader turns CSS into JS modules that inject <style> tags.
-          // In production, we use a plugin to extract that CSS to a file, but
-          // in development "style" loader enables hot editing of CSS.
-          {
-            test: /\.css$/,
-            use: [
-              require.resolve('style-loader'),
-              {
-                loader: require.resolve('css-loader'),
-                options: {
-                  importLoaders: 1,
-                },
-              },
-              postCssLoader,
-            ],
-          },
-          {
-            test: /\.scss$/,
-            use: ExtractTextPlugin.extract({
-              fallback: 'style-loader',
-              use: [ 'css-loader', 'sass-loader', postCssLoader ],
-            }),
-          },
-
-          // "file" loader makes sure those assets get served by WebpackDevServer.
-          // When you `import` an asset, you get its (virtual) filename.
-          // In production, they would get copied to the `build` folder.
-          // This loader doesn't use a "test" so it will catch all modules
-          // that fall through the other loaders.
-          {
-
-            // Exclude `js` files to keep "css" loader working as it injects
-            // its runtime that would otherwise processed through "file" loader.
-            // Also exclude `html` and `json` extensions so they get processed
-            // by webpacks internal loaders.
-            exclude: [ /\.(js|jsx|mjs)$/, /\.html$/, /\.json$/ ],
-            loader: require.resolve('file-loader'),
-            options: {
-              name: 'static/media/[name].[hash:8].[ext]',
-            },
-          },
-        ],
-      },
-
-      // ** STOP ** Are you adding a new loader?
-      // Make sure to add the new loader(s) before the "file" loader.
-    ],
-  },
-  plugins: [
-
-    // Makes some environment variables available in index.html.
-    // The public URL is available as %PUBLIC_URL% in index.html, e.g.:
-    // <link rel="shortcut icon" href="%PUBLIC_URL%/favicon.ico">
-    // In development, this will be an empty string.
-    new InterpolateHtmlPlugin(env.raw),
-
-    // Generates an `index.html` file with the <script> injected.
-    new HtmlWebpackPlugin({
-      inject: true,
-      template: paths.appHtml,
-    }),
-
-    // Add module names to factory functions so they appear in browser profiler.
-    new webpack.NamedModulesPlugin(),
-
-    // Makes some environment variables available to the JS code, for example:
-    // if (process.env.NODE_ENV === 'development') { ... }. See `./env.js`.
-    new webpack.DefinePlugin(env.stringified),
-
-    // This is necessary to emit hot updates (currently CSS only):
-    new webpack.HotModuleReplacementPlugin(),
-
-    // Watcher doesn't work well if you mistype casing in a path so we use
-    // a plugin that prints an error when you attempt to do this.
-    // See https://github.com/facebookincubator/create-react-app/issues/240
-    new CaseSensitivePathsPlugin(),
-
-    // If you require a missing module and then `npm install` it, you still have
-    // to restart the development server for Webpack to discover it. This plugin
-    // makes the discovery automatic so you don't have to restart.
-    // See https://github.com/facebookincubator/create-react-app/issues/186
-    new WatchMissingNodeModulesPlugin(paths.appNodeModules),
-
-    // Moment.js is an extremely popular library that bundles large locale files
-    // by default due to how Webpack interprets its code. This is a practical
-    // solution that requires the user to opt into importing specific locales.
-    // https://github.com/jmblog/how-to-optimize-momentjs-with-webpack
-    // You can remove this if you don't use Moment.js:
-    new webpack.IgnorePlugin(/^\.\/locale$/, /moment$/),
-    new ExtractTextPlugin('main.css'),
-  ],
-
-  // 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: {
-    dgram: 'empty',
-    fs: 'empty',
-    net: 'empty',
-    tls: 'empty',
-    child_process: 'empty',
-  },
-
-  // Turn off performance hints during development because we don't do any
-  // splitting or minification in interest of speed. These warnings become
-  // cumbersome.
-  performance: {
-    hints: false,
-  },
-};
diff --git a/config/webpack.config.js b/config/webpack.config.js
new file mode 100644
index 00000000..184c4dbb
--- /dev/null
+++ b/config/webpack.config.js
@@ -0,0 +1,610 @@
+'use strict';
+
+const fs = require('fs');
+const path = require('path');
+const webpack = require('webpack');
+const resolve = require('resolve');
+const PnpWebpackPlugin = require('pnp-webpack-plugin');
+const HtmlWebpackPlugin = require('html-webpack-plugin');
+const CaseSensitivePathsPlugin = require('case-sensitive-paths-webpack-plugin');
+const InlineChunkHtmlPlugin = require('react-dev-utils/InlineChunkHtmlPlugin');
+const TerserPlugin = require('terser-webpack-plugin');
+const MiniCssExtractPlugin = require('mini-css-extract-plugin');
+const OptimizeCSSAssetsPlugin = require('optimize-css-assets-webpack-plugin');
+const safePostCssParser = require('postcss-safe-parser');
+const ManifestPlugin = require('webpack-manifest-plugin');
+const InterpolateHtmlPlugin = require('react-dev-utils/InterpolateHtmlPlugin');
+const WorkboxWebpackPlugin = require('workbox-webpack-plugin');
+const WatchMissingNodeModulesPlugin = require('react-dev-utils/WatchMissingNodeModulesPlugin');
+const ModuleScopePlugin = require('react-dev-utils/ModuleScopePlugin');
+const getCSSModuleLocalIdent = require('react-dev-utils/getCSSModuleLocalIdent');
+const paths = require('./paths');
+const getClientEnvironment = require('./env');
+const ModuleNotFoundPlugin = require('react-dev-utils/ModuleNotFoundPlugin');
+const ForkTsCheckerWebpackPlugin = require('fork-ts-checker-webpack-plugin-alt');
+const typescriptFormatter = require('react-dev-utils/typescriptFormatter');
+
+
+// Source maps are resource heavy and can cause out of memory issue for large source files.
+const shouldUseSourceMap = process.env.GENERATE_SOURCEMAP !== 'false';
+// Some apps do not need the benefits of saving a web request, so not inlining the chunk
+// makes for a smoother build process.
+const shouldInlineRuntimeChunk = process.env.INLINE_RUNTIME_CHUNK !== 'false';
+
+// Check if TypeScript is setup
+const useTypeScript = fs.existsSync(paths.appTsConfig);
+
+// style files regexes
+const cssRegex = /\.css$/;
+const cssModuleRegex = /\.module\.css$/;
+const sassRegex = /\.(scss|sass)$/;
+const sassModuleRegex = /\.module\.(scss|sass)$/;
+
+// This is the production and development configuration.
+// It is focused on developer experience, fast rebuilds, and a minimal bundle.
+module.exports = function(webpackEnv) {
+  const isEnvDevelopment = webpackEnv === 'development';
+  const isEnvProduction = webpackEnv === 'production';
+
+  // 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.
+  // In development, we always serve from the root. This makes config easier.
+  const publicPath = isEnvProduction
+    ? paths.servedPath
+    : isEnvDevelopment && '/';
+  // Some apps do not use client-side routing with pushState.
+  // For these, "homepage" can be set to "." to enable relative asset paths.
+  const shouldUseRelativeAssetPaths = publicPath === './';
+
+  // `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_URL%/xyz looks better than %PUBLIC_URL%xyz.
+  const publicUrl = isEnvProduction
+    ? publicPath.slice(0, -1)
+    : isEnvDevelopment && '';
+  // Get environment variables to inject into our app.
+  const env = getClientEnvironment(publicUrl);
+
+  // common function to get style loaders
+  const getStyleLoaders = (cssOptions, preProcessor) => {
+    const loaders = [
+      isEnvDevelopment && require.resolve('style-loader'),
+      isEnvProduction && {
+        loader: MiniCssExtractPlugin.loader,
+        options: Object.assign(
+          {},
+          shouldUseRelativeAssetPaths ? { publicPath: '../../' } : undefined
+        ),
+      },
+      {
+        loader: require.resolve('css-loader'),
+        options: cssOptions,
+      },
+      {
+        // Options for PostCSS as we reference these options twice
+        // Adds vendor prefixing based on your specified browser support in
+        // package.json
+        loader: require.resolve('postcss-loader'),
+        options: {
+          // Necessary for external CSS imports to work
+          // https://github.com/facebook/create-react-app/issues/2677
+          ident: 'postcss',
+          plugins: () => [
+            require('postcss-flexbugs-fixes'),
+            require('postcss-preset-env')({
+              autoprefixer: {
+                flexbox: 'no-2009',
+              },
+              stage: 3,
+            }),
+          ],
+          sourceMap: isEnvProduction && shouldUseSourceMap,
+        },
+      },
+    ].filter(Boolean);
+    if (preProcessor) {
+      loaders.push({
+        loader: require.resolve(preProcessor),
+        options: {
+          sourceMap: isEnvProduction && shouldUseSourceMap,
+        },
+      });
+    }
+    return loaders;
+  };
+
+  return {
+    mode: isEnvProduction ? 'production' : isEnvDevelopment && 'development',
+    // Stop compilation early in production
+    bail: isEnvProduction,
+    devtool: isEnvProduction
+      ? shouldUseSourceMap
+        ? 'source-map'
+        : false
+      : isEnvDevelopment && 'cheap-module-source-map',
+    // These are the "entry points" to our application.
+    // This means they will be the "root" imports that are included in JS bundle.
+    entry: [
+      // Include an alternative client for WebpackDevServer. A client's job is to
+      // connect to WebpackDevServer by a socket and get notified about changes.
+      // When you save a file, the client will either apply hot updates (in case
+      // of CSS changes), or refresh the page (in case of JS changes). When you
+      // make a syntax error, this client will display a syntax error overlay.
+      // Note: instead of the default WebpackDevServer client, we use a custom one
+      // to bring better experience for Create React App users. You can replace
+      // the line below with these two lines if you prefer the stock client:
+      // require.resolve('webpack-dev-server/client') + '?/',
+      // require.resolve('webpack/hot/dev-server'),
+      isEnvDevelopment &&
+        require.resolve('react-dev-utils/webpackHotDevClient'),
+      // Finally, this is your app's code:
+      paths.appIndexJs,
+      // We include the app code last so that if there is a runtime error during
+      // initialization, it doesn't blow up the WebpackDevServer client, and
+      // changing JS code would still trigger a refresh.
+    ].filter(Boolean),
+    output: {
+      // The build folder.
+      path: isEnvProduction ? paths.appBuild : undefined,
+      // Add /* filename */ comments to generated require()s in the output.
+      pathinfo: isEnvDevelopment,
+      // There will be one main bundle, and one file per asynchronous chunk.
+      // In development, it does not produce real files.
+      filename: isEnvProduction
+        ? 'static/js/[name].[chunkhash:8].js'
+        : isEnvDevelopment && 'static/js/bundle.js',
+      // There are also additional JS chunk files if you use code splitting.
+      chunkFilename: isEnvProduction
+        ? 'static/js/[name].[chunkhash:8].chunk.js'
+        : isEnvDevelopment && 'static/js/[name].chunk.js',
+      // We inferred the "public path" (such as / or /my-project) from homepage.
+      // We use "/" in development.
+      publicPath: publicPath,
+      // Point sourcemap entries to original disk location (format as URL on Windows)
+      devtoolModuleFilenameTemplate: isEnvProduction
+        ? info =>
+            path
+              .relative(paths.appSrc, info.absoluteResourcePath)
+              .replace(/\\/g, '/')
+        : isEnvDevelopment &&
+          (info => path.resolve(info.absoluteResourcePath).replace(/\\/g, '/')),
+    },
+    optimization: {
+      minimize: isEnvProduction,
+      minimizer: [
+        // This is only used in production mode
+        new TerserPlugin({
+          terserOptions: {
+            parse: {
+              // we want terser to parse ecma 8 code. However, we don't want it
+              // to apply any minfication steps that turns valid ecma 5 code
+              // into invalid ecma 5 code. This is why the 'compress' and 'output'
+              // sections only apply transformations that are ecma 5 safe
+              // https://github.com/facebook/create-react-app/pull/4234
+              ecma: 8,
+            },
+            compress: {
+              ecma: 5,
+              warnings: false,
+              // Disabled because of an issue with Uglify breaking seemingly valid code:
+              // https://github.com/facebook/create-react-app/issues/2376
+              // Pending further investigation:
+              // https://github.com/mishoo/UglifyJS2/issues/2011
+              comparisons: false,
+              // Disabled because of an issue with Terser breaking valid code:
+              // https://github.com/facebook/create-react-app/issues/5250
+              // Pending futher investigation:
+              // https://github.com/terser-js/terser/issues/120
+              inline: 2,
+            },
+            mangle: {
+              safari10: true,
+            },
+            output: {
+              ecma: 5,
+              comments: false,
+              // Turned on because emoji and regex is not minified properly using default
+              // https://github.com/facebook/create-react-app/issues/2488
+              ascii_only: true,
+            },
+          },
+          // Use multi-process parallel running to improve the build speed
+          // Default number of concurrent runs: os.cpus().length - 1
+          parallel: true,
+          // Enable file caching
+          cache: true,
+          sourceMap: shouldUseSourceMap,
+        }),
+        // This is only used in production mode
+        new OptimizeCSSAssetsPlugin({
+          cssProcessorOptions: {
+            parser: safePostCssParser,
+            map: shouldUseSourceMap
+              ? {
+                  // `inline: false` forces the sourcemap to be output into a
+                  // separate file
+                  inline: false,
+                  // `annotation: true` appends the sourceMappingURL to the end of
+                  // the css file, helping the browser find the sourcemap
+                  annotation: true,
+                }
+              : false,
+          },
+        }),
+      ],
+      // Automatically split vendor and commons
+      // https://twitter.com/wSokra/status/969633336732905474
+      // https://medium.com/webpack/webpack-4-code-splitting-chunk-graph-and-the-splitchunks-optimization-be739a861366
+      splitChunks: {
+        chunks: 'all',
+        name: false,
+      },
+      // Keep the runtime chunk separated to enable long term caching
+      // https://twitter.com/wSokra/status/969679223278505985
+      runtimeChunk: true,
+    },
+    resolve: {
+      // This allows you to set a fallback for where Webpack should look for modules.
+      // We placed these paths second because we want `node_modules` to "win"
+      // if there are any conflicts. This matches Node resolution mechanism.
+      // https://github.com/facebook/create-react-app/issues/253
+      modules: ['node_modules'].concat(
+        // It is guaranteed to exist because we tweak it in `env.js`
+        process.env.NODE_PATH.split(path.delimiter).filter(Boolean)
+      ),
+      // 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/facebook/create-react-app/issues/290
+      // `web` extension prefixes have been added for better support
+      // for React Native Web.
+      extensions: paths.moduleFileExtensions
+        .map(ext => `.${ext}`)
+        .filter(ext => useTypeScript || !ext.includes('ts')),
+      alias: {
+        // Support React Native Web
+        // https://www.smashingmagazine.com/2016/08/a-glimpse-into-the-future-with-react-native-for-web/
+        'react-native': 'react-native-web',
+      },
+      plugins: [
+        // Adds support for installing with Plug'n'Play, leading to faster installs and adding
+        // guards against forgotten dependencies and such.
+        PnpWebpackPlugin,
+        // Prevents users from importing files from outside of src/ (or node_modules/).
+        // This often causes confusion because we only process files within src/ with babel.
+        // To fix this, we prevent you from importing files out of src/ -- if you'd like to,
+        // please link the files into your node_modules/ and let module-resolution kick in.
+        // Make sure your source files are compiled, as they will not be processed in any way.
+        new ModuleScopePlugin(paths.appSrc, [paths.appPackageJson]),
+      ],
+    },
+    resolveLoader: {
+      plugins: [
+        // Also related to Plug'n'Play, but this time it tells Webpack to load its loaders
+        // from the current package.
+        PnpWebpackPlugin.moduleLoader(module),
+      ],
+    },
+    module: {
+      strictExportPresence: true,
+      rules: [
+        // Disable require.ensure as it's not a standard language feature.
+        { parser: { requireEnsure: false } },
+
+        // First, run the linter.
+        // It's important to do this before Babel processes the JS.
+        {
+          test: /\.(js|mjs|jsx)$/,
+          enforce: 'pre',
+          use: [
+            {
+              options: {
+                formatter: require.resolve('react-dev-utils/eslintFormatter'),
+                eslintPath: require.resolve('eslint'),
+                
+              },
+              loader: require.resolve('eslint-loader'),
+            },
+          ],
+          include: paths.appSrc,
+        },
+        {
+          // "oneOf" will traverse all following loaders until one will
+          // match the requirements. When no loader matches it will fall
+          // back to the "file" loader at the end of the loader list.
+          oneOf: [
+            // "url" loader works like "file" loader except that it embeds assets
+            // smaller than specified limit in bytes as data URLs to avoid requests.
+            // A missing `test` is equivalent to a match.
+            {
+              test: [/\.bmp$/, /\.gif$/, /\.jpe?g$/, /\.png$/],
+              loader: require.resolve('url-loader'),
+              options: {
+                limit: 10000,
+                name: 'static/media/[name].[hash:8].[ext]',
+              },
+            },
+            // Process application JS with Babel.
+            // The preset includes JSX, Flow, TypeScript, and some ESnext features.
+            {
+              test: /\.(js|mjs|jsx|ts|tsx)$/,
+              include: paths.appSrc,
+              loader: require.resolve('babel-loader'),
+              options: {
+                customize: require.resolve(
+                  'babel-preset-react-app/webpack-overrides'
+                ),
+                
+                plugins: [
+                  [
+                    require.resolve('babel-plugin-named-asset-import'),
+                    {
+                      loaderMap: {
+                        svg: {
+                          ReactComponent:
+                            '@svgr/webpack?-prettier,-svgo![path]',
+                        },
+                      },
+                    },
+                  ],
+                ],
+                // This is a feature of `babel-loader` for webpack (not Babel itself).
+                // It enables caching results in ./node_modules/.cache/babel-loader/
+                // directory for faster rebuilds.
+                cacheDirectory: true,
+                cacheCompression: isEnvProduction,
+                compact: isEnvProduction,
+              },
+            },
+            // Process any JS outside of the app with Babel.
+            // Unlike the application JS, we only compile the standard ES features.
+            {
+              test: /\.(js|mjs)$/,
+              exclude: /@babel(?:\/|\\{1,2})runtime/,
+              loader: require.resolve('babel-loader'),
+              options: {
+                babelrc: false,
+                configFile: false,
+                compact: false,
+                presets: [
+                  [
+                    require.resolve('babel-preset-react-app/dependencies'),
+                    { helpers: true },
+                  ],
+                ],
+                cacheDirectory: true,
+                cacheCompression: isEnvProduction,
+                
+                // If an error happens in a package, it's possible to be
+                // because it was compiled. Thus, we don't want the browser
+                // debugger to show the original code. Instead, the code
+                // being evaluated would be much more helpful.
+                sourceMaps: false,
+              },
+            },
+            // "postcss" loader applies autoprefixer to our CSS.
+            // "css" loader resolves paths in CSS and adds assets as dependencies.
+            // "style" loader turns CSS into JS modules that inject <style> tags.
+            // In production, we use MiniCSSExtractPlugin to extract that CSS
+            // to a file, but in development "style" loader enables hot editing
+            // of CSS.
+            // By default we support CSS Modules with the extension .module.css
+            {
+              test: cssRegex,
+              exclude: cssModuleRegex,
+              use: getStyleLoaders({
+                importLoaders: 1,
+                sourceMap: isEnvProduction && shouldUseSourceMap,
+              }),
+              // Don't consider CSS imports dead code even if the
+              // containing package claims to have no side effects.
+              // Remove this when webpack adds a warning or an error for this.
+              // See https://github.com/webpack/webpack/issues/6571
+              sideEffects: true,
+            },
+            // Adds support for CSS Modules (https://github.com/css-modules/css-modules)
+            // using the extension .module.css
+            {
+              test: cssModuleRegex,
+              use: getStyleLoaders({
+                importLoaders: 1,
+                sourceMap: isEnvProduction && shouldUseSourceMap,
+                modules: true,
+                getLocalIdent: getCSSModuleLocalIdent,
+              }),
+            },
+            // Opt-in support for SASS (using .scss or .sass extensions).
+            // By default we support SASS Modules with the
+            // extensions .module.scss or .module.sass
+            {
+              test: sassRegex,
+              exclude: sassModuleRegex,
+              use: getStyleLoaders(
+                {
+                  importLoaders: 2,
+                  sourceMap: isEnvProduction && shouldUseSourceMap,
+                },
+                'sass-loader'
+              ),
+              // Don't consider CSS imports dead code even if the
+              // containing package claims to have no side effects.
+              // Remove this when webpack adds a warning or an error for this.
+              // See https://github.com/webpack/webpack/issues/6571
+              sideEffects: true,
+            },
+            // Adds support for CSS Modules, but using SASS
+            // using the extension .module.scss or .module.sass
+            {
+              test: sassModuleRegex,
+              use: getStyleLoaders(
+                {
+                  importLoaders: 2,
+                  sourceMap: isEnvProduction && shouldUseSourceMap,
+                  modules: true,
+                  getLocalIdent: getCSSModuleLocalIdent,
+                },
+                'sass-loader'
+              ),
+            },
+            // "file" loader makes sure those assets get served by WebpackDevServer.
+            // When you `import` an asset, you get its (virtual) filename.
+            // In production, they would get copied to the `build` folder.
+            // This loader doesn't use a "test" so it will catch all modules
+            // that fall through the other loaders.
+            {
+              loader: require.resolve('file-loader'),
+              // Exclude `js` files to keep "css" loader working as it injects
+              // its runtime that would otherwise be processed through "file" loader.
+              // Also exclude `html` and `json` extensions so they get processed
+              // by webpacks internal loaders.
+              exclude: [/\.(js|mjs|jsx|ts|tsx)$/, /\.html$/, /\.json$/],
+              options: {
+                name: 'static/media/[name].[hash:8].[ext]',
+              },
+            },
+            // ** STOP ** Are you adding a new loader?
+            // Make sure to add the new loader(s) before the "file" loader.
+          ],
+        },
+      ],
+    },
+    plugins: [
+      // Generates an `index.html` file with the <script> injected.
+      new HtmlWebpackPlugin(
+        Object.assign(
+          {},
+          {
+            inject: true,
+            template: paths.appHtml,
+          },
+          isEnvProduction
+            ? {
+                minify: {
+                  removeComments: true,
+                  collapseWhitespace: true,
+                  removeRedundantAttributes: true,
+                  useShortDoctype: true,
+                  removeEmptyAttributes: true,
+                  removeStyleLinkTypeAttributes: true,
+                  keepClosingSlash: true,
+                  minifyJS: true,
+                  minifyCSS: true,
+                  minifyURLs: true,
+                },
+              }
+            : undefined
+        )
+      ),
+      // Inlines the webpack runtime script. This script is too small to warrant
+      // a network request.
+      isEnvProduction &&
+        shouldInlineRuntimeChunk &&
+        new InlineChunkHtmlPlugin(HtmlWebpackPlugin, [/runtime~.+[.]js/]),
+      // Makes some environment variables available in index.html.
+      // The public URL is available as %PUBLIC_URL% in index.html, e.g.:
+      // <link rel="shortcut icon" href="%PUBLIC_URL%/favicon.ico">
+      // In production, it will be an empty string unless you specify "homepage"
+      // in `package.json`, in which case it will be the pathname of that URL.
+      // In development, this will be an empty string.
+      new InterpolateHtmlPlugin(HtmlWebpackPlugin, env.raw),
+      // This gives some necessary context to module not found errors, such as
+      // the requesting resource.
+      new ModuleNotFoundPlugin(paths.appPath),
+      // 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 is set to production
+      // during a production build.
+      // Otherwise React will be compiled in the very slow development mode.
+      new webpack.DefinePlugin(env.stringified),
+      // This is necessary to emit hot updates (currently CSS only):
+      isEnvDevelopment && new webpack.HotModuleReplacementPlugin(),
+      // Watcher doesn't work well if you mistype casing in a path so we use
+      // a plugin that prints an error when you attempt to do this.
+      // See https://github.com/facebook/create-react-app/issues/240
+      isEnvDevelopment && new CaseSensitivePathsPlugin(),
+      // If you require a missing module and then `npm install` it, you still have
+      // to restart the development server for Webpack to discover it. This plugin
+      // makes the discovery automatic so you don't have to restart.
+      // See https://github.com/facebook/create-react-app/issues/186
+      isEnvDevelopment &&
+        new WatchMissingNodeModulesPlugin(paths.appNodeModules),
+      isEnvProduction &&
+        new MiniCssExtractPlugin({
+          // Options similar to the same options in webpackOptions.output
+          // both options are optional
+          filename: 'static/css/[name].[contenthash:8].css',
+          chunkFilename: 'static/css/[name].[contenthash:8].chunk.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',
+        publicPath: publicPath,
+      }),
+      // Moment.js is an extremely popular library that bundles large locale files
+      // by default due to how Webpack interprets its code. This is a practical
+      // solution that requires the user to opt into importing specific locales.
+      // https://github.com/jmblog/how-to-optimize-momentjs-with-webpack
+      // You can remove this if you don't use Moment.js:
+      new webpack.IgnorePlugin(/^\.\/locale$/, /moment$/),
+      // Generate a service worker script that will precache, and keep up to date,
+      // the HTML & assets that are part of the Webpack build.
+      isEnvProduction &&
+        new WorkboxWebpackPlugin.GenerateSW({
+          clientsClaim: true,
+          exclude: [/\.map$/, /asset-manifest\.json$/],
+          importWorkboxFrom: 'cdn',
+          navigateFallback: publicUrl + '/index.html',
+          navigateFallbackBlacklist: [
+            // Exclude URLs starting with /_, as they're likely an API call
+            new RegExp('^/_'),
+            // Exclude URLs containing a dot, as they're likely a resource in
+            // public/ and not a SPA route
+            new RegExp('/[^/]+\\.[^/]+$'),
+          ],
+        }),
+      // TypeScript type checking
+      useTypeScript &&
+        new ForkTsCheckerWebpackPlugin({
+          typescript: resolve.sync('typescript', {
+            basedir: paths.appNodeModules,
+          }),
+          async: false,
+          checkSyntacticErrors: true,
+          tsconfig: paths.appTsConfig,
+          compilerOptions: {
+            module: 'esnext',
+            moduleResolution: 'node',
+            resolveJsonModule: true,
+            isolatedModules: true,
+            noEmit: true,
+            jsx: 'preserve',
+          },
+          reportFiles: [
+            '**',
+            '!**/*.json',
+            '!**/__tests__/**',
+            '!**/?(*.)(spec|test).*',
+            '!**/src/setupProxy.*',
+            '!**/src/setupTests.*',
+          ],
+          watch: paths.appSrc,
+          silent: true,
+          formatter: typescriptFormatter,
+        }),
+    ].filter(Boolean),
+    // 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: {
+      dgram: 'empty',
+      fs: 'empty',
+      net: 'empty',
+      tls: 'empty',
+      child_process: 'empty',
+    },
+    // Turn off performance processing because we utilize
+    // our own hints via the FileSizeReporter
+    performance: false,
+  };
+};
diff --git a/config/webpack.config.prod.js b/config/webpack.config.prod.js
deleted file mode 100644
index f2519179..00000000
--- a/config/webpack.config.prod.js
+++ /dev/null
@@ -1,385 +0,0 @@
-
-const path = require('path');
-const autoprefixer = require('autoprefixer');
-const webpack = require('webpack');
-const HtmlWebpackPlugin = require('html-webpack-plugin');
-const ExtractTextPlugin = require('extract-text-webpack-plugin');
-const ManifestPlugin = require('webpack-manifest-plugin');
-const InterpolateHtmlPlugin = require('react-dev-utils/InterpolateHtmlPlugin');
-const SWPrecacheWebpackPlugin = require('sw-precache-webpack-plugin');
-const eslintFormatter = require('react-dev-utils/eslintFormatter');
-const ModuleScopePlugin = require('react-dev-utils/ModuleScopePlugin');
-const paths = require('./paths');
-const getClientEnvironment = require('./env');
-
-// 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.
-const publicPath = paths.servedPath;
-
-// Some apps do not use client-side routing with pushState.
-// For these, "homepage" can be set to "." to enable relative asset paths.
-const shouldUseRelativeAssetPaths = publicPath === './';
-
-// Source maps are resource heavy and can cause out of memory issue for large source files.
-const shouldUseSourceMap = process.env.GENERATE_SOURCEMAP !== 'false';
-
-// `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_URL%/xyz looks better than %PUBLIC_URL%xyz.
-const publicUrl = publicPath.slice(0, -1);
-
-// Get environment variables to inject into our app.
-const env = getClientEnvironment(publicUrl);
-
-// Assert this just to be safe.
-// Development builds of React are slow and not intended for production.
-if (env.stringified['process.env'].NODE_ENV !== '"production"') {
-  throw new Error('Production builds must have NODE_ENV=production.');
-}
-
-// Note: defined here because it will be used more than once.
-const cssFilename = 'static/css/[name].[contenthash:8].css';
-
-// ExtractTextPlugin expects the build output to be flat.
-// (See https://github.com/webpack-contrib/extract-text-webpack-plugin/issues/27)
-// However, our output is structured with css, js and media folders.
-// To have this structure working with relative paths, we have to use custom options.
-// Making sure that the publicPath goes back to to build folder.
-const extractTextPluginOptions = shouldUseRelativeAssetPaths
-  ? { publicPath: Array(cssFilename.split('/').length).join('../') }
-  : {};
-
-// 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 = {
-
-  // 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: shouldUseSourceMap ? 'source-map' : false,
-
-  // In production, we only want to load the polyfills and the app code.
-  entry: [ 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,
-
-    // Point sourcemap entries to original disk location (format as URL on Windows)
-    devtoolModuleFilenameTemplate: (info) =>
-      path
-        .relative(paths.appSrc, info.absoluteResourcePath)
-        .replace(/\\/g, '/'),
-  },
-  resolve: {
-
-    // This allows you to set a fallback for where Webpack should look for modules.
-    // We placed these paths second because we want `node_modules` to "win"
-    // if there are any conflicts. This matches Node resolution mechanism.
-    // https://github.com/facebookincubator/create-react-app/issues/253
-    modules: [ 'node_modules', paths.appNodeModules ].concat(
-
-      // It is guaranteed to exist because we tweak it in `env.js`
-      process.env.NODE_PATH.split(path.delimiter).filter(Boolean)
-    ),
-
-    // 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
-    // `web` extension prefixes have been added for better support
-    // for React Native Web.
-    extensions: [ '.web.js', '.mjs', '.js', '.json', '.web.jsx', '.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',
-    },
-    plugins: [
-
-      // Prevents users from importing files from outside of src/ (or node_modules/).
-      // This often causes confusion because we only process files within src/ with babel.
-      // To fix this, we prevent you from importing files out of src/ -- if you'd like to,
-      // please link the files into your node_modules/ and let module-resolution kick in.
-      // Make sure your source files are compiled, as they will not be processed in any way.
-      new ModuleScopePlugin(paths.appSrc, [ paths.appPackageJson ]),
-    ],
-  },
-  module: {
-    strictExportPresence: true,
-    rules: [
-
-      // TODO: Disable require.ensure as it's not a standard language feature.
-      // We are waiting for https://github.com/facebookincubator/create-react-app/issues/2176.
-      // { parser: { requireEnsure: false } },
-
-      // First, run the linter.
-      // It's important to do this before Babel processes the JS.
-      {
-        test: /\.(js|jsx|mjs)$/,
-        enforce: 'pre',
-        use: [
-          {
-            options: {
-              formatter: eslintFormatter,
-              eslintPath: require.resolve('eslint'),
-
-            },
-            loader: require.resolve('eslint-loader'),
-          },
-        ],
-        include: paths.appSrc,
-      },
-      {
-
-        // "oneOf" will traverse all following loaders until one will
-        // match the requirements. When no loader matches it will fall
-        // back to the "file" loader at the end of the loader list.
-        oneOf: [
-
-          // "url" loader works just like "file" loader but it also embeds
-          // assets smaller than specified size as data URLs to avoid requests.
-          {
-            test: [ /\.bmp$/, /\.gif$/, /\.jpe?g$/, /\.png$/ ],
-            loader: require.resolve('url-loader'),
-            options: {
-              limit: 10000,
-              name: 'static/media/[name].[hash:8].[ext]',
-            },
-          },
-
-          // Process JS with Babel.
-          {
-            test: /\.(js|jsx|mjs)$/,
-            include: paths.appSrc,
-            loader: require.resolve('babel-loader'),
-            options: {
-
-              compact: true,
-            },
-          },
-
-          // The notation here is somewhat confusing.
-          // "postcss" loader applies autoprefixer to our CSS.
-          // "css" loader resolves paths in CSS and adds assets as dependencies.
-          // "style" loader normally turns CSS into JS modules injecting <style>,
-          // but unlike in development configuration, we do something different.
-          // `ExtractTextPlugin` first applies the "postcss" and "css" loaders
-          // (second argument), then grabs the result CSS and puts it into a
-          // separate file in our build process. This way we actually ship
-          // a single CSS file in production instead of JS code injecting <style>
-          // tags. If you use code splitting, however, any async bundles will still
-          // use the "style" loader inside the async code so CSS from them won't be
-          // in the main CSS file.
-          {
-            test: [ /\.css$/, /\.scss$/ ],
-            loader: ExtractTextPlugin.extract(
-              Object.assign(
-                {
-                  fallback: {
-                    loader: require.resolve('style-loader'),
-                    options: {
-                      hmr: false,
-                    },
-                  },
-                  use: [
-                    {
-                      loader: require.resolve('css-loader'),
-                      options: {
-                        importLoaders: 1,
-                        minimize: true,
-                        sourceMap: shouldUseSourceMap,
-                      },
-                    },
-                    {
-                      loader: require.resolve('sass-loader'),
-                    },
-                    {
-                      loader: require.resolve('postcss-loader'),
-                      options: {
-
-                        // Necessary for external CSS imports to work
-                        // https://github.com/facebookincubator/create-react-app/issues/2677
-                        ident: 'postcss',
-                        plugins: () => [
-                          require('postcss-flexbugs-fixes'),
-                          autoprefixer({
-                            browsers: [
-                              '>1%',
-                              'last 4 versions',
-                              'Firefox ESR',
-                              'not ie < 9',
-                            ],
-                            flexbox: 'no-2009',
-                          }),
-                        ],
-                      },
-                    },
-                  ],
-                },
-                extractTextPluginOptions
-              )
-            ),
-
-            // Note: this won't work without `new ExtractTextPlugin()` in `plugins`.
-          },
-
-          // "file" loader makes sure assets end up in the `build` folder.
-          // When you `import` an asset, you get its filename.
-          // This loader doesn't use a "test" so it will catch all modules
-          // that fall through the other loaders.
-          {
-            loader: require.resolve('file-loader'),
-
-            // Exclude `js` files to keep "css" loader working as it injects
-            // it's runtime that would otherwise processed through "file" loader.
-            // Also exclude `html` and `json` extensions so they get processed
-            // by webpacks internal loaders.
-            exclude: [ /\.(js|jsx|mjs)$/, /\.html$/, /\.json$/ ],
-            options: {
-              name: 'static/media/[name].[hash:8].[ext]',
-            },
-          },
-
-          // ** STOP ** Are you adding a new loader?
-          // Make sure to add the new loader(s) before the "file" loader.
-        ],
-      },
-    ],
-  },
-  plugins: [
-
-    // Makes some environment variables available in index.html.
-    // The public URL is available as %PUBLIC_URL% in index.html, e.g.:
-    // <link rel="shortcut icon" href="%PUBLIC_URL%/favicon.ico">
-    // In production, it will be an empty string unless you specify "homepage"
-    // in `package.json`, in which case it will be the pathname of that URL.
-    new InterpolateHtmlPlugin(env.raw),
-
-    // 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.stringified),
-
-    // Minify the code.
-    new webpack.optimize.UglifyJsPlugin({
-      compress: {
-        warnings: false,
-
-        // Disabled because of an issue with Uglify breaking seemingly valid code:
-        // https://github.com/facebookincubator/create-react-app/issues/2376
-        // Pending further investigation:
-        // https://github.com/mishoo/UglifyJS2/issues/2011
-        comparisons: false,
-      },
-      mangle: {
-        safari10: true,
-      },
-      output: {
-        comments: false,
-
-        // Turned on because emoji and regex is not minified properly using default
-        // https://github.com/facebookincubator/create-react-app/issues/2488
-        ascii_only: true,
-      },
-      sourceMap: shouldUseSourceMap,
-    }),
-
-    // Note: this won't work without ExtractTextPlugin.extract(..) in `loaders`.
-    new ExtractTextPlugin({
-      filename: cssFilename,
-    }),
-
-    // 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',
-    }),
-
-    // Generate a service worker script that will precache, and keep up to date,
-    // the HTML & assets that are part of the Webpack build.
-    new SWPrecacheWebpackPlugin({
-
-      // By default, a cache-busting query parameter is appended to requests
-      // used to populate the caches, to ensure the responses are fresh.
-      // If a URL is already hashed by Webpack, then there is no concern
-      // about it being stale, and the cache-busting can be skipped.
-      dontCacheBustUrlsMatching: /\.\w{8}\./,
-      filename: 'service-worker.js',
-      logger(message) {
-        if (message.indexOf('Total precache size is') === 0) {
-          // This message occurs for every build and is a bit too noisy.
-          return;
-        }
-        if (message.indexOf('Skipping static resource') === 0) {
-          // This message obscures real errors so we ignore it.
-          // https://github.com/facebookincubator/create-react-app/issues/2612
-          return;
-        }
-
-        console.log(message); // eslint-disable-line
-      },
-      minify: true,
-
-      // For unknown URLs, fallback to the index page
-      navigateFallback: `${publicUrl}/index.html`,
-
-      // Ignores URLs starting from /__ (useful for Firebase):
-      // https://github.com/facebookincubator/create-react-app/issues/2237#issuecomment-302693219
-      navigateFallbackWhitelist: [ /^(?!\/__).*/ ],
-
-      // Don't precache sourcemaps (they're large) and build asset manifest:
-      staticFileGlobsIgnorePatterns: [ /\.map$/, /asset-manifest\.json$/ ],
-    }),
-
-    // Moment.js is an extremely popular library that bundles large locale files
-    // by default due to how Webpack interprets its code. This is a practical
-    // solution that requires the user to opt into importing specific locales.
-    // https://github.com/jmblog/how-to-optimize-momentjs-with-webpack
-    // You can remove this if you don't use Moment.js:
-    new webpack.IgnorePlugin(/^\.\/locale$/, /moment$/),
-  ],
-
-  // 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: {
-    dgram: 'empty',
-    fs: 'empty',
-    net: 'empty',
-    tls: 'empty',
-    child_process: 'empty',
-  },
-};
diff --git a/config/webpackDevServer.config.js b/config/webpackDevServer.config.js
index f91c7d41..33ab8d3a 100644
--- a/config/webpackDevServer.config.js
+++ b/config/webpackDevServer.config.js
@@ -1,24 +1,25 @@
+'use strict';
 
 const errorOverlayMiddleware = require('react-dev-utils/errorOverlayMiddleware');
+const evalSourceMapMiddleware = require('react-dev-utils/evalSourceMapMiddleware');
 const noopServiceWorkerMiddleware = require('react-dev-utils/noopServiceWorkerMiddleware');
 const ignoredFiles = require('react-dev-utils/ignoredFiles');
-const config = require('./webpack.config.dev');
 const paths = require('./paths');
+const fs = require('fs');
 
 const protocol = process.env.HTTPS === 'true' ? 'https' : 'http';
 const host = process.env.HOST || '0.0.0.0';
 
 module.exports = function(proxy, allowedHost) {
   return {
-
     // WebpackDevServer 2.4.3 introduced a security fix that prevents remote
     // websites from potentially accessing local content through DNS rebinding:
     // https://github.com/webpack/webpack-dev-server/issues/887
     // https://medium.com/webpack/webpack-dev-server-middleware-security-issues-1489d950874a
     // However, it made several existing use cases such as development in cloud
     // environment or subdomains in development significantly more complicated:
-    // https://github.com/facebookincubator/create-react-app/issues/2271
-    // https://github.com/facebookincubator/create-react-app/issues/2233
+    // https://github.com/facebook/create-react-app/issues/2271
+    // https://github.com/facebook/create-react-app/issues/2233
     // While we're investigating better solutions, for now we will take a
     // compromise. Since our WDS configuration only serves files in the `public`
     // folder we won't consider accessing them a vulnerability. However, if you
@@ -29,14 +30,11 @@ module.exports = function(proxy, allowedHost) {
     // really know what you're doing with a special environment variable.
     disableHostCheck:
       !proxy || process.env.DANGEROUSLY_DISABLE_HOST_CHECK === 'true',
-
     // Enable gzip compression of generated files.
     compress: true,
-
     // Silence WebpackDevServer's own logs since they're generally not useful.
     // It will still show compile warnings and errors with this setting.
     clientLogLevel: 'none',
-
     // By default WebpackDevServer serves physical files from current directory
     // in addition to all the virtual build products that it serves from memory.
     // This is confusing because those files won’t automatically be available in
@@ -52,46 +50,46 @@ module.exports = function(proxy, allowedHost) {
     // for some reason broken when imported through Webpack. If you just want to
     // use an image, put it in `src` and `import` it from JavaScript instead.
     contentBase: paths.appPublic,
-
     // By default files from `contentBase` will not trigger a page reload.
     watchContentBase: true,
-
     // Enable hot reloading server. It will provide /sockjs-node/ endpoint
     // for the WebpackDevServer client so it can learn when the files were
     // updated. The WebpackDevServer client is included as an entry point
     // in the Webpack development configuration. Note that only changes
     // to CSS are currently hot reloaded. JS changes will refresh the browser.
     hot: true,
-
     // It is important to tell WebpackDevServer to use the same "root" path
     // as we specified in the config. In development, we always serve from /.
-    publicPath: config.output.publicPath,
-
+    publicPath: '/',
     // WebpackDevServer is noisy by default so we emit custom message instead
-    // by listening to the compiler events with `compiler.plugin` calls above.
+    // by listening to the compiler events with `compiler.hooks[...].tap` calls above.
     quiet: true,
-
     // Reportedly, this avoids CPU overload on some systems.
-    // https://github.com/facebookincubator/create-react-app/issues/293
+    // https://github.com/facebook/create-react-app/issues/293
     // src/node_modules is not ignored to support absolute imports
-    // https://github.com/facebookincubator/create-react-app/issues/1065
+    // https://github.com/facebook/create-react-app/issues/1065
     watchOptions: {
       ignored: ignoredFiles(paths.appSrc),
     },
-
     // Enable HTTPS if the HTTPS environment variable is set to 'true'
     https: protocol === 'https',
     host,
     overlay: false,
     historyApiFallback: {
-
       // Paths with dots should still use the history fallback.
-      // See https://github.com/facebookincubator/create-react-app/issues/387.
+      // See https://github.com/facebook/create-react-app/issues/387.
       disableDotRule: true,
     },
     public: allowedHost,
     proxy,
-    before(app) {
+    before(app, server) {
+      if (fs.existsSync(paths.proxySetup)) {
+        // This registers user provided middleware for proxy reasons
+        require(paths.proxySetup)(app);
+      }
+
+      // This lets us fetch source contents from webpack for the error overlay
+      app.use(evalSourceMapMiddleware(server));
       // This lets us open files from the runtime error overlay.
       app.use(errorOverlayMiddleware());
 
@@ -99,7 +97,7 @@ module.exports = function(proxy, allowedHost) {
       // previous service worker registered for the same host:port combination.
       // We do this in development to avoid hitting the production cache if
       // it used the same host and port.
-      // https://github.com/facebookincubator/create-react-app/issues/2272#issuecomment-302832432
+      // https://github.com/facebook/create-react-app/issues/2272#issuecomment-302832432
       app.use(noopServiceWorkerMiddleware());
     },
   };
diff --git a/package.json b/package.json
index de8bbaad..7b2b8a40 100644
--- a/package.json
+++ b/package.json
@@ -128,5 +128,11 @@
     "presets": [
       "react-app"
     ]
-  }
+  },
+  "browserslist": [
+    ">0.2%",
+    "not dead",
+    "not ie <= 11",
+    "not op_mini all"
+  ]
 }
diff --git a/scripts/start.js b/scripts/start.js
index 2a0b7d01..4803a20f 100644
--- a/scripts/start.js
+++ b/scripts/start.js
@@ -1,4 +1,4 @@
-/* eslint no-console: "off" */
+'use strict';
 
 // Do this as the first thing so that any code reading it knows the right env.
 process.env.BABEL_ENV = 'development';
@@ -7,13 +7,14 @@ process.env.NODE_ENV = 'development';
 // Makes the script crash on unhandled rejections instead of silently
 // ignoring them. In the future, promise rejections that are not handled will
 // terminate the Node.js process with a non-zero exit code.
-process.on('unhandledRejection', (err) => {
+process.on('unhandledRejection', err => {
   throw err;
 });
 
 // Ensure environment variables are read.
 require('../config/env');
 
+
 const fs = require('fs');
 const chalk = require('chalk');
 const webpack = require('webpack');
@@ -28,20 +29,19 @@ const {
 } = require('react-dev-utils/WebpackDevServerUtils');
 const openBrowser = require('react-dev-utils/openBrowser');
 const paths = require('../config/paths');
-const config = require('../config/webpack.config.dev');
+const configFactory = require('../config/webpack.config');
 const createDevServerConfig = require('../config/webpackDevServer.config');
 
 const useYarn = fs.existsSync(paths.yarnLockFile);
 const isInteractive = process.stdout.isTTY;
 
 // Warn and crash if required files are missing
-if (!checkRequiredFiles([ paths.appHtml, paths.appIndexJs ])) {
+if (!checkRequiredFiles([paths.appHtml, paths.appIndexJs])) {
   process.exit(1);
 }
 
 // Tools like Cloud9 rely on this.
-const FALLBACK_PORT = 3000;
-const DEFAULT_PORT = parseInt(process.env.PORT) || FALLBACK_PORT;
+const DEFAULT_PORT = parseInt(process.env.PORT, 10) || 3000;
 const HOST = process.env.HOST || '0.0.0.0';
 
 if (process.env.HOST) {
@@ -53,68 +53,65 @@ if (process.env.HOST) {
     )
   );
   console.log(
-    'If this was unintentional, check that you haven\'t mistakenly set it in your shell.'
+    `If this was unintentional, check that you haven't mistakenly set it in your shell.`
+  );
+  console.log(
+    `Learn more here: ${chalk.yellow('http://bit.ly/CRA-advanced-config')}`
   );
-  console.log(`Learn more here: ${chalk.yellow('http://bit.ly/2mwWSwH')}`);
   console.log();
 }
 
-// We attempt to use the default port but if it is busy, we offer the user to
-// run on a different port. `choosePort()` Promise resolves to the next free port.
-choosePort(HOST, DEFAULT_PORT)
-  .then((port) => {
-    if (port === null) {
+// We require that you explictly set browsers and do not fall back to
+// browserslist defaults.
+const { checkBrowsers } = require('react-dev-utils/browsersHelper');
+checkBrowsers(paths.appPath, isInteractive)
+  .then(() => {
+    // We attempt to use the default port but if it is busy, we offer the user to
+    // run on a different port. `choosePort()` Promise resolves to the next free port.
+    return choosePort(HOST, DEFAULT_PORT);
+  })
+  .then(port => {
+    if (port == null) {
       // We have not found a port.
       return;
     }
-
+    const config = configFactory('development');
     const protocol = process.env.HTTPS === 'true' ? 'https' : 'http';
     const appName = require(paths.appPackageJson).name;
-
     const urls = prepareUrls(protocol, HOST, port);
-
     // Create a webpack compiler that is configured with custom messages.
     const compiler = createCompiler(webpack, config, appName, urls, useYarn);
-
     // Load proxy config
     const proxySetting = require(paths.appPackageJson).proxy;
-
     const proxyConfig = prepareProxy(proxySetting, paths.appPublic);
-
-    // Serve webpack assets generated by the compiler over a web sever.
+    // Serve webpack assets generated by the compiler over a web server.
     const serverConfig = createDevServerConfig(
       proxyConfig,
       urls.lanUrlForConfig
     );
     const devServer = new WebpackDevServer(compiler, serverConfig);
-
     // Launch WebpackDevServer.
-
-    devServer.listen(port, HOST, (err) => {
+    devServer.listen(port, HOST, err => {
       if (err) {
-        console.log(err);
-
-        return;
+        return console.log(err);
       }
       if (isInteractive) {
         clearConsole();
       }
-
       console.log(chalk.cyan('Starting the development server...\n'));
       openBrowser(urls.localUrlForBrowser);
     });
 
-    [ 'SIGINT', 'SIGTERM' ].forEach((sig) => {
-      process.on(sig, () => {
+    ['SIGINT', 'SIGTERM'].forEach(function(sig) {
+      process.on(sig, function() {
         devServer.close();
         process.exit();
       });
     });
   })
-  .catch((err) => {
+  .catch(err => {
     if (err && err.message) {
       console.log(err.message);
     }
-
     process.exit(1);
   });
diff --git a/src/short-urls/ShortUrls.js b/src/short-urls/ShortUrls.js
index 22b2ed15..3bfeec46 100644
--- a/src/short-urls/ShortUrls.js
+++ b/src/short-urls/ShortUrls.js
@@ -1,21 +1,35 @@
 import React from 'react';
+import PropTypes from 'prop-types';
 import Paginator from './Paginator';
 
-const ShortUrls = (SearchBar, ShortUrlsList) => (props) => {
-  const { match: { params }, shortUrlsList } = props;
-  const { page, serverId } = params;
-  const { data = [], pagination } = shortUrlsList;
+const ShortUrls = (SearchBar, ShortUrlsList) => {
+  const propTypes = {
+    match: PropTypes.shape({
+      params: PropTypes.object,
+    }),
+    shortUrlsList: PropTypes.object,
+  };
 
-  // Using a key on a component makes react to create a new instance every time the key changes
-  const urlsListKey = `${serverId}_${page}`;
+  const ShortUrlsComponent = (props) => {
+    const { match: { params }, shortUrlsList } = props;
+    const { page, serverId } = params;
+    const { data = [], pagination } = shortUrlsList;
 
-  return (
-    <div className="shlink-container">
-      <div className="form-group"><SearchBar /></div>
-      <ShortUrlsList {...props} shortUrlsList={data} key={urlsListKey} />
-      <Paginator paginator={pagination} serverId={serverId} />
-    </div>
-  );
+    // Using a key on a component makes react to create a new instance every time the key changes
+    const urlsListKey = `${serverId}_${page}`;
+
+    return (
+      <div className="shlink-container">
+        <div className="form-group"><SearchBar /></div>
+        <ShortUrlsList {...props} shortUrlsList={data} key={urlsListKey} />
+        <Paginator paginator={pagination} serverId={serverId} />
+      </div>
+    );
+  };
+
+  ShortUrlsComponent.propTypes = propTypes;
+
+  return ShortUrlsComponent;
 };
 
 export default ShortUrls;
diff --git a/src/tags/helpers/TagsSelector.js b/src/tags/helpers/TagsSelector.js
index 161a9237..3df8d0fd 100644
--- a/src/tags/helpers/TagsSelector.js
+++ b/src/tags/helpers/TagsSelector.js
@@ -10,6 +10,7 @@ const TagsSelector = (colorGenerator) => class TagsSelector extends React.Compon
   static propTypes = {
     tags: PropTypes.arrayOf(PropTypes.string).isRequired,
     onChange: PropTypes.func.isRequired,
+    listTags: PropTypes.func,
     placeholder: PropTypes.string,
     tagsList: PropTypes.shape({
       tags: PropTypes.arrayOf(PropTypes.string),