processes started via `exec` are unable to accept input

require('shelljs/global')

exec('npm init')

exec npm init { stdio: 'inherit' }
This utility will walk you through creating a package.json file.
It only covers the most common items, and tries to guess sensible defaults.

See `npm help json` for definitive documentation on these fields
and exactly what they do.

Use `npm install <pkg> --save` afterwards to install a package and
save it as a dependency in the package.json file.

Press ^C at any time to quit.
name: (drive) foobar