Webpack error while loading module DomUtils after import enzyme - reactjs

Question

I have a project with TypeScript and React 0.14.
And I set-up test enviroment with karma/mocha/chai. And its work. But when I import and use function from enzyme I got error in browser (Human-readable error from Chrome):
Uncaught TypeError: ext[key].bind is not a function
As I understood modules 227...232 (internal DomUtils files) not loaded before using.
Maybe I forgot something? Or does anyone know workaround?
Sorry for huge configs:
Webpack config:
var webpack = require("webpack"),
path = require("path"),
ExtractTextPlugin = require("extract-text-webpack-plugin"),
precss = require('precss'),
autoprefixer = require('autoprefixer');
module.exports = {
entry: [
path.resolve(__dirname, "app/app.tsx")
],
output: {
filename: "bundle.js",
publicPath: "/build/",
path: path.resolve(__dirname, "build")
},
module: {
loaders: [
{test: /\.json$/, loader: 'json'},
{test: /\.tsx$/, exclude: /node_modules/, loader: 'es3ify!ts'},
{test: /\.s?css$/, loader: ExtractTextPlugin.extract('style', 'css!postcss')},
{test: /\.svg|eot|ttf|woff|woff2|ico|png|gif|jpg($|\?)/, loader: 'file'}
]
},
postcss: function () {
return [precss, autoprefixer];
},
resolve: {
root: path.resolve(__dirname, "app"),
extensions: ["", ".js", ".ts", ".tsx", ".json"]
},
plugins: [
new ExtractTextPlugin("bundle.css")
]
};
Karma config:
var webpack = require('webpack');
var webpackConfig = require('./webpack.config');
module.exports = function(config) {
config.set({
basePath: '',
frameworks: ['mocha', 'chai', 'sinon'],
files: [
'app/**/*-test.tsx'
],
exclude: [],
preprocessors: {
'app/**/*.tsx': ['webpack']
},
webpack: {
resolve: webpackConfig.resolve,
module: webpackConfig.module,
externals: {
'cheereo': 'window',
'react/addons': true,
'react/lib/ExecutionEnvironment': true,
'react/lib/ReactContext': true
}
},
reporters: ['progress', 'spec'],
port: 9876,
colors: true,
logLevel: config.LOG_INFO,
autoWatch: false,
browsers: ['PhantomJS'],
singleRun: true,
concurrency: Infinity
})
}
Test file:
import * as React from 'react';
import { shallow } from 'enzyme';
describe('Dashboard', () => {
it('should be OK', () => {
const instance = shallow(<div />);
expect(true).to.equal(true, 'true === true');
});
});
Webpack import chain: enzyme -> ... -> cheerio -> ... -> DomUtils
StackOverflow my last chance to solve the problem, Google don't know answer.

Answer 1

I've faced with same issue, for me it helps to put domutils as extrenal in webpack configuration. Based on your config try this:
webpack: {
resolve: webpackConfig.resolve,
module: webpackConfig.module,
externals: {
'domutils': 'true',
'cheereo': 'window',
'react/addons': true,
'react/lib/ExecutionEnvironment': true,
'react/lib/ReactContext': true
}
}