heroku/heroku-buildpack-nodejs — pull request #40 by mojodna (2013-08-09 18:26:07+00:00)
Title: Vendor NPM predictably

This vendors NPM into /app/vendor/npm (instead of an unpredictable `mktmpdir`-created directory), adds it to the `PATH`, and rewrites its wrapper so that it can be executed directly on a dyno.