devDependencies not being installed on heroku by default

[kosz]

Even though the app.json file seems to configure NPM_CONFIG_PRODUCTION=false, deployment attempts on Heroku do not work until this setting is manually added to heroku using the heroku toolbelt.

Steps to reproduce ( at least on my heroku account ):

• clone the starter repo and setup a new github repo with it
• setup Heroku to deploy from the new github repo
• attempt to manually deploy will fail

Workaround :

https://github.com/mbuchetics/heroku-buildpack-nodejs-grunt/issues/5#issuecomment-73810004

Other notes:

• PR Apps work out of the box.
• I've experienced this with the angular starters as well as the typescript react starter
• Other people, using other heroku accounts, indicated that they cannot reproduce

[rbrander]

I've seen this happen before for my personal projects too. I think this is a heroku configuration issue, but I'm not 100%.