I just tried Webpack 4.0.0-beta.0 and got the following stacktrace:
ERROR in ./src/App/polyfills.ts
Module build failed: TypeError: Cannot read property 'tslint' of undefined
at resolveOptions (C:\workspace\software-entwicklung\react\node_modules\tslint-loader\index.js:24:47)
at Object.module.exports (C:\workspace\software-entwicklung\react\node_modules\tslint-loader\index.js:139:17)
I just tried Webpack 4.0.0-beta.0 and got the following stacktrace: