Missing modules while running npm install --only=dev and future fix

Question

I had three error messages for different modules while running:

npm install --only=dev.

I installed them manually by running:

npm install mkdirp
npm install request 
npm install npmlog 

How can I avoid this on other (next) dev machines?

Can I just add these three to the beginning of the "devDependencies" list in package.json?

Answer 1

--only=dev will only install devDependencies. If you need these dependencies, either run npm install without the --only flag or add them you your devDependencies .