Multiple entries from a directory dynamically

webpack.config.js

const path = require('path');
const glob = require('glob');
const MiniCssExtractPlugin = require('mini-css-extract-plugin');
const UglifyJsPlugin = require('uglifyjs-webpack-plugin');
const OptimizeCSSAssetsPlugin = require('optimize-css-assets-webpack-plugin');
const CopyWebpackPlugin = require('copy-webpack-plugin');

const templateEntries = glob.sync('./js/templates/**.js').reduce(function(obj, el){
  var name = "./templates/" + path.parse(el).name
  obj[name] = el;
  return obj
},{})

const mainEntries = {
  './app': ['./js/app.js'].concat(glob.sync('./vendor/**/*.js')),
  './manage': ['./js/manage.js'].concat(glob.sync('./vendor/**/*.js')),
  './admin': ['./js/admin.js'].concat(glob.sync('./vendor/**/*.js'))
}

const entries = Object.assign(templateEntries, mainEntries)

module.exports = (env, options) => ({
  optimization: {
    minimizer: [
      new UglifyJsPlugin({ cache: true, parallel: true, sourceMap: false }),
      new OptimizeCSSAssetsPlugin({})
    ]
  },
  entry: entries,
  output: {
    filename: '[name].js',
    path: path.resolve(__dirname, '../priv/static/js')
  },
  module: {
    rules: [
      {
        test: /\.js$/,
        exclude: /node_modules/,
        use: {
          loader: 'babel-loader'
        }
      },
      {
        // test: /\.css$/,
        // use: [MiniCssExtractPlugin.loader, 'css-loader']
        test: /\.scss$/,
        use: [
          MiniCssExtractPlugin.loader,
          {
            loader: 'css-loader',
            options: {}
          },
          {
            loader: 'sass-loader',
            options: {}
          }
        ]
      }
    ]
  },
  plugins: [
    // new MiniCssExtractPlugin({ filename: '../css/app.css' }),
    new MiniCssExtractPlugin({ filename: '../css/[name].css' }),
    new CopyWebpackPlugin([{ from: 'static/', to: '../' }])
  ],

  resolve: {
    alias: {
      react: path.resolve(__dirname, './node_modules/react'),
      'react-dom': path.resolve(__dirname, './node_modules/react-dom')
    }
  }

});