npm-publish(1) -- Publish a package
npm publish <tarball> npm publish <folder>
Publishes a package to the registry so that it can be installed by name.
<folder>: A folder containing a package.json file
<tarball>: A url or file path to a gzipped tar archive containing a single folder with a package.json file inside.
Fails if the package name and version combination already exists in the registry.