How do I know which packages to install with --save and which with --save-dev?

Question

Node.js

Here is my package.json. I know which packages go into production (--save), and which are used only in development (--save-dev), so I duplicate most of the packages both there and there.
Question: are there any validators/linters that will poke and indicate which package to specify where?

Answer 1

All that will be
put on the server

Answer 2

Does not exist. How do they know if you're writing a gulp plugin or using it to build?
On the topic: use the search.
https://toster.ru/answer?answer_id=559717#comments...
What is the difference between --save-dev and --save?