The problem is that when I do npm start OR npm run customScriptCommand npm just not doing anything with the project and quickly just return new lin
npm start
npm run customScriptCommand
npm config set ignore-scripts false would do the trick for you.
npm config set ignore-scripts false
The struggle is real my friend, not following random tutorials from now.
https://github.com/npm/cli/issues/541
You can install yarn and it works; just run yarn start. As to what caused the problem I have no idea.
yarn start