Установите Nodemon как зависимость Dev
npm install --save-dev nodemon
Vivacious Vendace
npm install --save-dev nodemon
# Install nodemon
npm install nodemon
# Install nodemon globally on your machine
npm install -g nodemon
# Install nodemon on your project as dev-dependency
npm install nodemon --save-devnpm install -g nodemonnpm install nodemon --save-devnpm install --save-dev nodemonnodemon --exec npm run dev:test