The uninstall option didn't work for me when I tried to use the same command to the one I used in installing (as I was installing with the @latest directive)
So for example, I installed a package like this:
npm install @ngtools/webpack@latest
And then I wanted to uninstall it so I used the same command (including @latest)
npm uninstall @ngtools/webpack@latest
So the above uninstall didn't work, I have to remove the @latest & then it worked well
npm uninstall @ngtools/webpack
I hope this helps
