...
const WebpackIsomorphicToolsPlugin = require('webpack-isomorphic-tools/plugin');
const webpackIsomorphicToolsPlugin = new WebpackIsomorphicToolsPlugin(require('./webpack-isomorphic-tools-configuration'))
  .development();
...
module.exports = {
  ...,
  module: {
    ...,
    {
      oneOf: [
        {
          test: webpackIsomorphicToolsPlugin.regularExpression('images'),
          loader: 'url-loader?limit=10240'
        }
      ]
    },
    ...
  },
  ...,
  plugins: [
    ...,
    webpackIsomorphicToolsPlugin
  ],
  ...
};