index.js

// var babelPresetES2015;
// var modulesCommonJs;
// var es2015PluginsWithCommonJs;
// var es2015NativeModulesOnly;
//
// babelPresetES2015 = require('babel-preset-es2015');
// es2015PluginsWithCommonJs = babelPresetES2015.plugins;
//
// try {
//   // console.log('\nTrying to require CommonJS module using npm3 style...');
//   modulesCommonJs = require('babel-plugin-transform-es2015-modules-commonjs');
// } catch (error) {
//   // console.log('\t\t\t\t\t\t\t...npm3 is no go');
// }
//
// if (!modulesCommonJs) {
//   try {
//     // console.log('\nTrying to require CommonJS module using npm2 style...');
//     modulesCommonJs = require('babel-preset-es2015/node_modules/babel-plugin-transform-es2015-modules-commonjs');
//   } catch (error) {
//     // console.log('\t\t\t\t\t\t\t...npm2 is no go!');
//   }
// }
//
// if (!modulesCommonJs) {
//   throw new Error('Cannot resolve babel-plugin-transform-es2015-modules-commonjs');
// } else {
//   // console.log('\nSuccess, CommonJS module have been located!');
// }
//
// es2015NativeModulesOnly = es2015PluginsWithCommonJs.filter(function (es2015Plugin) {
//   // console.log('\nRemoving it from es2015 preset and transforming it into es2015-native-modules');
//   return es2015Plugin !== modulesCommonJs;
// });
//
// if (es2015PluginsWithCommonJs.length === es2015NativeModulesOnly.length) {
//   // throw new Error('Failed to remove babel-plugin-transform-es2015-modules-commonjs from the preset.');
//   /* In order to facilitate webpack-isomorphic-tools we will not throw an error but rather silent warning.
//    * Reason being that one might want to use native-modules mode and still have access to common modules
//    * on the development server at the same time. */
//   console.log('\nWarning: CommonJS modules detected - Strict ES6-modules mode disabled.\n');
// } else {
//   // console.log('All Done!');
// }

console.log('This preset is no longer necessary and can be replaced by the following: ');
console.log('\tpresets: [');
console.log('\t\t["es2015", { "modules": false }]');
console.log('\t]');

module.exports = {
  presets: [
    ["es2015", { "modules": false }]
  ]
};