Errors when running 'npm run dev'

[dmitriz]

Any hint why this happens?

ERROR in ./src/frontend/js/main.js
Module not found: Error: Cannot resolve module 'react/lib/ReactMount' in /Users/dmitrizaitsev/Repos/classroom-coding/src/frontend/js
 @ ./src/frontend/js/main.js 1:320-351

ERROR in ./src/frontend/js/app.jsx
Module not found: Error: Cannot resolve module 'react/lib/ReactMount' in /Users/dmitrizaitsev/Repos/classroom-coding/src/frontend/js
 @ ./src/frontend/js/app.jsx 1:320-351

ERROR in ./~/react-dom/index.js
Module not found: Error: Cannot resolve module 'react/lib/ReactDOM' in /Users/dmitrizaitsev/Repos/classroom-coding/node_modules/react-dom
 @ ./~/react-dom/index.js 3:17-46

[switheyw]

Add react-mount. I'm including the changes I've made to webpack and package.json. Can't go far with outdated originals. package.json.zip webpack.config.js.zip