webpack.config.js

const webpack = require('webpack');
// const ExtractTextPlugin = require('extract-text-webpack-plugin');
const pkg = require('./package.json');
const path = require('path');
const libraryName = "Carousal";

module.exports = {
  mode:'production',
  entry: path.join(__dirname, "./src/index.js"),
  output: {
    path: path.join(__dirname, './dist'),
    filename: 'index.js',
    library: libraryName,
    libraryTarget: 'umd',
    publicPath: '/dist/',
    umdNamedDefine: true
  },
  module: {
    rules: [
      {
        test: /\.js$/,
        include: path.resolve(__dirname, 'src'),
        exclude: /(node_modules|bower_components|build)/,
        use: {
          loader: 'babel-loader',
          options: {
            presets: ['@babel/preset-env']
          }
        }
      },
      {
        test: /\.css$/,
        use: ['style-loader', 'css-loader']
      },
      {
        test: /\.scss$/,
        use: [{
          loader: "style-loader" // creates style nodes from JS strings
        }, {
          loader: "css-loader" // translates CSS into CommonJS
        }, {
          loader: "sass-loader" // compiles Sass to CSS
        }]
      }
    ]
  },
  externals: {
    react: {
      commonjs: "react",
      commonjs2: "react",
      amd: "React",
      root: "React"
    },
    "react-dom": {
      commonjs: "react-dom",
      commonjs2: "react-dom",
      amd: "ReactDOM",
      root: "ReactDOM"
    }
  },
  resolve: {
    alias: {
      'react': path.resolve(__dirname, './node_modules/react'),
      'react-dom': path.resolve(__dirname, './node_modules/react-dom'),
    }
  },
};