Heroku buildpack: Coffeescript

This is a Heroku buildpack for Coffeescript apps, and is compatible with Cedar-14 stack. It uses NPM and SCons. It was forked from the Heroku Node.js buildpack. It is also loosely based on the original coffeescript buildpack by Chris Fung, which did not work out-of-the-box with Cedar-14.

Usage

Example usage:

$ ls
Procfile  package.json  src

$ ls src
app.coffee

$ heroku create --stack cedar --buildpack https://github.com/sailrish/heroku-buildpack-coffee.git

$ git push heroku master
...
Compressing source files... done.
Building source:

-----> Fetching custom git buildpack... done
-----> Coffeescript app detected

-----> Creating runtime environment

       NPM_CONFIG_LOGLEVEL=error
       NPM_CONFIG_PRODUCTION=true
       NODE_ENV=production
       NODE_MODULES_CACHE=true

-----> Installing binaries
       engines.node (package.json):  0.10.x
       engines.npm (package.json):   1.3.x

       Resolving node version 0.10.x via semver.io...
       Downloading and installing node 0.10.40...
       Resolving npm version 1.3.x via semver.io...
       Downloading and installing npm 1.3.26 (replacing version 1.4.28)...
       npm WARN package.json [email protected] No repository field.

-----> Restoring cache
       Skipping cache (new runtime signature)

-----> Building dependencies
       Pruning any extraneous modules
       Installing node modules (package.json)
...
...
-----> Compiling coffeescript source
       Source compiled to target

-----> Caching build
       Clearing previous node cache
       Saving 1 cacheDirectories (default):
       - node_modules

-----> Build succeeded!
...
...
-----> Discovering process types
       Procfile declares types -> web

-----> Compressing... done, 24.1MB
-----> Launching... done, v10
...

The buildpack will detect your app as Coffeescript if it detects a file matching src/*.coffee in your project root. It will use NPM to install your dependencies, and vendors a version of the Node.js runtime into your slug. The node_modules directory will be cached between builds to allow for faster NPM install time.

You must include Coffeescript in your package.json. The buildpack does not install Coffeescript automatically in order to allow you to specify your own Coffeescript version.

Compiled javascript is written to the target directory in the slug. Your Procfile should reference these compiled files like so:

web: node target/app.js

Node.js and npm versions

You can specify the versions of Node.js and npm your application requires using package.json

{
  "name": "myapp",
  "version": "0.0.1",
  "engines": {
    "node": "0.10.x",
    "npm": "1.3.x"
  }
}

To list the available versions of Node.js and npm, see these manifests:

• http://heroku-buildpack-nodejs.s3.amazonaws.com/manifest.nodejs
• http://heroku-buildpack-nodejs.s3.amazonaws.com/manifest.npm