webpack.config.js

const HtmlWebPackPlugin = require("html-webpack-plugin");
const MiniCssExtractPlugin = require("mini-css-extract-plugin");
const ExtractTextPlugin = require("extract-text-webpack-plugin");
const path = require("path");

module.exports = {
  entry: "./src/assets/js/index.js",
  output: {
    path: path.resolve(__dirname, "dist"),
    filename: "assets/js/bundle.js",
    publicPath: ""
  },
  module: {
    rules: [
      {
        test: /\.js$/,
        exclude: /node_modules/,
        use: {
          loader: "babel-loader"
        }
      },
      {
        type: "javascript/auto",
        test: /\.json$/,
        use: [
          {
            loader: "file-loader",
            options: {
              name: "./assets/[name].[ext]"
            }
          }
        ]
      },
      {
        test: /\.html$/,
        use: [
          {
            loader: "html-loader",
            options: { minimize: true }
          }
        ]
      },
      {
        test: /\.css$/,
        use: [MiniCssExtractPlugin.loader, "css-loader"]
      },
      {
        test: /\.(png|jpg|svg|gif|ico)$/,
        use: [
          {
            loader: "file-loader",
            options: {
              name: "[name].[ext]",
              outputPath: "assets/img/",
              publicPath: "./assets/img"
            }
          }
        ]
      },
      {
        test: /favicon\.ico$/,
        loader: "file-loader",
        options: {
          name: "[name].[ext]?[hash:8]"
        }
      },
      {
        test: /\.scss$/,
        use: ExtractTextPlugin.extract({
          use: [
            "css-loader", // translates CSS into CommonJS
            "sass-loader" // compiles Sass to CSS, using Node Sass by default
          ]
        })
      }
    ]
  },
  plugins: [
    new HtmlWebPackPlugin({
      template: "./src/index.html",
      filename: "./index.html",
      inject: true,
      minify: {
        removeComments: true,
        collapseWhitespace: true
      }
    }),
    new ExtractTextPlugin("styles.css"),

    new MiniCssExtractPlugin({
      filename: "[name].css",
      chunkFilename: "[id].css"
    })
  ]
};