webpack.config.js

const HtmlWebPackPlugin = require("html-webpack-plugin");

const htmlWebpackPlugin = new HtmlWebPackPlugin({
  template: "./src/index.html",
  filename: "./index.html"
});

module.exports = {
  module: {
    rules: [
      {
        test: /\.js$/,
        exclude: /node_modules/,
        use: {
          loader: "babel-loader",
          options: {
          	presets: ['babel-preset-env','babel-preset-react'],
          	plugins: ['transform-runtime']
          }
        }
      },
      {
      	test: /\.css$/,
       	use: ["style-loader", "css-loader"]
      },
      {
        test: /\.sass$/,
        use: [
          {
            loader: "style-loader"
          },
          {
            loader: "css-loader",
            options: {
              modules: true,
              importLoaders: 1,
              localIdentName: "[name]_[local]_[hash:base64]",
              camelCase: true,
              sourceMap: true,
              minimize: true
            }
          },
          {
            loader: "sass-loader"
          }
        ]
      },
      {
        test: /\.(png|svg|jpg|gif)$/,
        use: [
          { loader: 'file-loader' }
        ]
      }
    ]
  },
  plugins: [htmlWebpackPlugin]
};