Be sure that you have installed nvm:
- Windows: https://github.com/coreybutler/nvm-windows
- Linux / Mac: https://github.com/nvm-sh/nvm
After that please use the nodeJS Version 18.12.0 with the command nvm install 18.12.0 followed by nvm use 18.12.0.
The next step is to install angular cli globaly:
npm install -g @angular/cli
Now you can use npm install in the ./ directory.
Run ng serve for a dev envirement. Navigate to https://localhost:4200/. The app will automatically reload if you change any of the source files.