text: "use strict";
  
  const autoprefixer = require("autoprefixer");
  const path = require("path");
  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 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);
  
  // 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: 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$/],
  						loader: require.resolve("url-loader"),
  						options: {
  							limit: 10000,
  							name: "static/media/[name].[hash:8].[ext]"
  						}
            },
            //html-loader
  					{
  						test: /\.(html)$/,
  						use: {
  							loader: "html-loader",
  							options: {
  								attrs: [":data-src"]
  							}
  						}
  					},
  					// 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
  								}
  							},
  							{
  								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" // React doesn't support IE8 anyway
  											],
  											flexbox: "no-2009"
  										})
  									]
  								}
  							}
  						]
  					},
  					// "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
  						// 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$/, /\.html$/, /\.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$/)
  	],
  	// 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
  	}
  };
  