webpack.common.js

const path = require('path');
const webpack = require('webpack');
const HtmlWebpackPlugin = require('html-webpack-plugin');
const MiniCssExtractPlugin = require('mini-css-extract-plugin');
const { CleanWebpackPlugin } = require('clean-webpack-plugin');
const Dotenv = require('dotenv-webpack');
const {
  appDirectory,
  buildDirectory
} = require('./webpack-build-utils/filePath');

module.exports = {
  entry: `${appDirectory}/index.jsx`,
  output: {
    path: buildDirectory,
    filename: '[name].chunk.js',
    publicPath: '/'
  },
  resolve: {
    extensions: ['.jsx', '.js'],
    alias: {
      Images: path.resolve(__dirname, 'src/img/'),
      Components: path.resolve(__dirname, 'src/components/'),
      Actions: path.resolve(__dirname, 'src/actions/'),
      Validate: path.resolve(__dirname, 'src/validations/')
    }
  },
  plugins: [
    new CleanWebpackPlugin(),
    new MiniCssExtractPlugin({
      filename: 'style.css'
    }),
    new webpack.ProgressPlugin(),
    new HtmlWebpackPlugin({
      template: `${appDirectory}/index.html`,
      filename: `${buildDirectory}/index.html`,
      inject: 'body'
    }),
    new Dotenv()
  ],
  module: {
    rules: [
      {
        test: /\.js?$|.jsx?$/,
        exclude: /node_modules/,
        use: {
          loader: 'babel-loader',
          options: {
            presets: ['@babel/preset-env', '@babel/preset-react'],
            plugins: [
              '@babel/plugin-proposal-object-rest-spread',
              '@babel/plugin-proposal-class-properties',
              '@babel/plugin-transform-runtime',
              '@babel/plugin-transform-arrow-functions'
            ]
          }
        }
      },
      {
        test: /\.(css|scss)$/,
        use: ['style-loader', 'css-loader', 'sass-loader']
      },
      {
        test: /\.(jpg|jpeg|png|gif|mp3|svg)$/,
        loader: ['file-loader']
      }
    ]
  }
};