heroku/heroku-buildpack-nodejs — pull request #58 by zeke (2013-10-23 05:25:46+00:00)
Title: Shrinkwrap

- Give npm-shrinkwrap.json preferential cachebusting treatment
- If npm-shrinkwrap.json is absent, use package.json as the cachebuster and output a Pro Tip about shrinkwrapping
- Redirect npm's stderr output to stdout