polyrepo-update 

Bulk update packages. Currently only lists which packages are out of date.
Installation
$ npm install polyrepo-update
Usage
From the CLI:
Usage: polyrepo-update [options]
Options:
-h, --help Output usage information
-v, --version Output version number
Examples:
$ polyrepo-update # update repos in current dir
$ ls . | polyrepo-update # update a list of repos
Docs: https://github.com/polyrepo/polyrepo-update
Bugs: https://github.com/polyrepo/polyrepo-update/issues
From Node:
const update = require('polyrepo-update')
const json = require('JSONStream')
process.stdin
.pipe(update())
.pipe(json.stringify())
.pipe(process.stdout)
API
transformStream = polyrepoUpdate()
Take a list of directories and check if the dependencies in its package.json
are up to date. Outputs an object, make sure to stringify it before passing it
to process.stdout.
Contributors
License
MIT