Move a module from devDependencies to dependencies in npm package.json

Yes! to move a module from devDependencies to dependencies:

npm install <module_name> --save-prod

Shorthand to move from devDependencies to dependencies (prod):

npm i <module_name> -P

If you want to do the opposite (i.e. move a module from dependencies to devDependencies) just do:

npm install <module_name> --save-dev

or shorthand:

npm i <module_name> -D

In yarn:

Move a module from devDependencies to dependencies:

yarn remove <module_name> --dev && yarn add <module_name> 

Move a module from dependencies to devDependencies :

yarn remove <module_name> && yarn add <module_name> --dev

As said in the comments, the command actually deletes the module and reinstall it in the new place.