nodemon not found in npm

Question

I have a problem: nodemon does not run off the npm script (e.g. npm start),
but if nodemon is called on the command line outside the npm script, nodemon run

Answer 1

My nodemon vanished after installing babel (why?).

Tried a lot of stuff. Here is how I solved it:

sudo npm i -g nodemon

Just reinstall it with sudo. Yeah.