webpack.dev.config.js

const webpack = require("webpack");
const path = require("path");
const MiniCssExtractPlugin = require("mini-css-extract-plugin");
const HtmlWebpackPlugin = require("html-webpack-plugin");
const InterpolateHtmlPlugin = require("react-dev-utils/InterpolateHtmlPlugin");

module.exports = {
	mode: "development",
	target: "web",
	entry: {
		main: [
			"webpack-hot-middleware/client?path=/__webpack_hmr&timeout=20000",
			"./src/index.js",
		],
	},
	output: {
		path: path.join(__dirname, "bundle"),
		filename: "js/bundle.js",
		publicPath: "/",
	},
	devServer: {
		contentBase: "./public",
		historyApiFallback: true,
		https: true,
		port: 3000,
	},
	devtool: "inline-source-map",
	module: {
		rules: [
			{
				use: "babel-loader",
				test: /\.js$/,
				exclude: /node_modules/,
			},
			{
				// Loads the javacript into html template provided.
				// Entry point is set below in HtmlWebPackPlugin in Plugins
				test: /\.html$/,
				use: [
					{
						loader: "html-loader",
						//options: { minimize: true }
					},
				],
			},
			{
				use: "babel-loader",
				test: /\.js$/,
				exclude: /node_modules/,
			},
			{
				use: [MiniCssExtractPlugin.loader, "css-loader"],
				test: /\.css$/,
			},
			{
				test: /\.(jpe?g|png|gif|svg|ico|json)$/,
				use: [
					{
						loader: "url-loader",
						options: {
							limit: 40000,
							name: "assets/[path][name].[ext]",
							context: path.resolve(__dirname, "src/assets"),
						},
					},
					"image-webpack-loader",
				],
			},
		],
	},
	plugins: [
		new HtmlWebpackPlugin({
			inject: true,
			template: path.resolve("public/index.html"),
			filename: "index.html",
			excludeChunks: ["server"],
		}),
		new InterpolateHtmlPlugin(HtmlWebpackPlugin, {
			PUBLIC_URL: "public",
		}),
		new MiniCssExtractPlugin({
			filename: "css/[name].css",
			chunkFilename: "css/[id].css",
		}),
		new webpack.DefinePlugin({
			"process.env.NODE_ENV": JSON.stringify(process.env.NODE_ENV),
		}),
		new webpack.optimize.OccurrenceOrderPlugin(),
		new webpack.HotModuleReplacementPlugin(),
		new webpack.NoEmitOnErrorsPlugin(),
	]
};