npm prune [[<@scope>/]<pkg>...] [--production] [--dry-run] [--json]
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 those present in the
node_modules folder that are not listed as any package's dependency list.
--production flag is specified or the
NODE_ENV environment variable is set to production, this command will remove the packages specified in your
--no-production will negate
NODE_ENV being set to production.
--dry-run flag is used then no changes will actually be made.
--json flag is used, then the changes npm prune made (or would have made with
--dry-run) are printed as a JSON object.
In normal operation, extraneous modules are pruned automatically, so you'll only need this command with the
--production flag. However, in the real world, operation is not always "normal". When crashes or mistakes happen, this command can help clean up any resulting garbage.
To remove extraneous packages (packages that are installed but not in dependency list) run the following command:
To remove all dev packages add
npm prune --production
With all that being said, I highly recommend you keep learning!