old_contents: import path from 'path';
  import WebpackIsomorphicTools from 'webpack-isomorphic-tools';
  import WebpackIsomorphicToolsConfig from '../../webpack/webpack.isomorphic.tools';
  
  const rootDir = path.resolve(__dirname, '../../');
  /* eslint no-underscore-dangle: 0*/
  global.__DEVELOPMENT__ = process.env.NODE_ENV !== 'production';
  global.webpackIsomorphicTools = new WebpackIsomorphicTools(WebpackIsomorphicToolsConfig)
    .server(rootDir, () => {
      require('./server');
    });
  
new_contents: const path = require('path');
  const WebpackIsomorphicTools = require('webpack-isomorphic-tools');
  const WebpackIsomorphicToolsConfig = require('../../webpack/webpack.isomorphic.tools');
  
  const rootDir = path.resolve(__dirname, '../../');
  /* eslint no-underscore-dangle: 0*/
  global.__DEVELOPMENT__ = process.env.NODE_ENV !== 'production';
  global.webpackIsomorphicTools = new WebpackIsomorphicTools(WebpackIsomorphicToolsConfig)
    .server(rootDir, () => {
      require('./server');
    });
  
subject: Use "require"