webpack.validateSchema is not a function

Question

Webpack are throwing this error all of a sudden:

TypeError: webpack.validateSchema is not a function

Everything was working fine

Answer 1

Got the same issue when we upgraded angular/cli to 1.6.3 and when we test the ng -v we get an error towards webpack. So we happen to uninstall webpack, do an cache clean and then installed the webpack again globally. It resolved the issue