webpack.config.js

const path = require('path');
const webpack = require('webpack');
const { CleanWebpackPlugin } = require('clean-webpack-plugin');

module.exports = {
  mode: 'development',
  entry: {
    'single-spa.config': './single-spa.config.js',
  },
  output: {
    publicPath: '/dist/',
    filename: '[name].js',
    path: path.resolve(__dirname, 'dist'),
  },
  module: {
    rules: [
      {
        test: /\.css$/,
        use: ['style-loader', 'css-loader']
      }, {
        test: /\.js$/,
        exclude: [/node_modules/],
        loader: 'babel-loader',
        options: { presets: ['@babel/env','@babel/preset-react'] },
      },
    ],
  },
  resolve: {
    modules: [path.resolve(__dirname, 'node_modules')],
  },
  plugins: [
    new CleanWebpackPlugin(),
  ],
  devtool: 'source-map',
  externals: [],
  devServer: {
    historyApiFallback: true
  }
};