by dominikmayer


Demeteorizer Buildpack

A fork of the popular Meteor Buildpack Horse that uses Demeteorizer to allow installing a TypeScript app. (It should also work with non-TypeScript apps.)

Prepare your app

The buildpack assumes, that all definition files are part of your code. So if you you're using the Meteor TypeScript libraries make sure to copy the definitions.

Setup deployment

To use this with your meteor app and heroku:

  1. Set up your app to deploy to heroku with git.
  2. Set this repository as the buildpack URL:

    heroku buildpacks:set
  3. If it isn't set already, be sure to set the ROOT_URL for meteor (replace URL with whatever is appropriate):

    heroku config:set ROOT_URL=https://<yourapp>
  4. If you don't yet have a MongoDB, add the MongoLab addon:

    heroku addons:create mongolab

    Otherwiese, make sure to set the MONGO_URL:

    heroku config:set MONGO_URL=mongodb://<your MongoDB>

Once that's done, you can deploy your app using this build pack any time by pushing to heroku:

git push heroku master


The basic buildpack should function correctly for any normal-ish meteor app, with or without npm-container. For extra steps needed for your particular build, just add shell scripts to the "extras" folder and they will get sourced into the build.

Extras included in this branch:

  • Set MONGO_URL to the value of MONGOLAB_URI.
  • Include phantomjs for use with spiderable.

Where things go

This buildpack creates a directory .meteor/heroku_build ($COMPILE_DIR) inside the app checkout, and puts all the binaries and the built app in there. So it ends up having the usual unixy bin/, lib/, share etc subdirectories. Those directories are added to $PATH and $LD_LIBRARY_PATH appropriately.

So $COMPILE_DIR/bin etc are great places to put any extra binaries or stuff if you need to in custom extras.


Meteor is under active developement, recent changes in its core broke support for certain meteor packages designed to access their own assets at first run. The issue has been reported on, but it may take a while to have it fixed. In the meanwhile you can circumvent the problem by setting the following variable in your Heroku Config Vars: