webpack.config.js

const path = require('path');
module.exports = {
   mode : "development",
   context : __dirname,
   entry : {
      '7jam' : './source/DFclient/7jam.js',
      '7jamAdmin' : './source/DFclient/7jamAdminClient.js'
   },
   output : {
      path: path.resolve(__dirname, "public/dist"),
      environment : {
         // The environment supports arrow functions ('() => { ... }').
         arrowFunction : true,
         // The environment supports BigInt as literal (123n).
         bigIntLiteral : false,
         // The environment supports const and let for variable declarations.
         const : true,
         // The environment supports destructuring ('{ a, b } = obj').
         destructuring : true,
         // The environment supports an async import() function to import EcmaScript modules.
         dynamicImport : false,
         // The environment supports 'for of' iteration ('for (const x of array) { ... }').
         forOf : true,
         // The environment supports ECMAScript Module syntax to import ECMAScript modules (import ... from '...').
         module : false,
         // The environment supports optional chaining ('obj?.a' or 'obj?.()').
         optionalChaining : true,
         // The environment supports template literals.
         templateLiteral : true,
      },
   },
   module : {
      rules : [
         {
            test : /\.js$/,
            exclude : /node_modules/,
            loader : 'babel-loader',
            options : {
               presets : [ '@babel/preset-env',
                           '@babel/react', {
                              'plugins' : [ '@babel/plugin-proposal-class-properties',
                                            "@babel/plugin-proposal-private-methods" ]
                           } ]
            }
         }
      ]
   }
};