Remove extraneous packages
npm prune [[<@scope>/]<pkg>...] [--production]
This command removes "extraneous" packages. If a package name is provided, then only packages matching one of the supplied names are removed.
Extraneous packages are packages that are not listed on the parent package's dependencies list.
--production flag is specified or the
variable is set to
production, this command will remove the packages
specified in your
NODE_ENV being set to