Deploying to Heroku is super simple. Just add the NodeJS buildpack

heroku buildpacks:clear
heroku buildpacks:set heroku/nodejs --index 1
heroku buildpacks:set heroku/ruby --index 2

Heroku for older versions of Breakfast (0.5.x and earlier)

Add the custom buildpack

heroku buildpacks:add --index 2

Capistrano V3

Breakfast plugs into the assets:precompile task. So as long as you have Capistrano Rails and node installed there is nothing else you need to do.

Capistrano for older versions of Breakfast (0.5.x and earlier)

Breakfast ships with deploy tasks for Capistrano V3.

In your Capfile

require "breakfast/capistrano"

If you want roles besides web to run asset compilation modify the breakfast_roles option in config/deploy.rb

Breakfast needs to run npm while deploying. If the npm installation is at a location different than /usr/bin/npm you will need to modify the breakfast_npm_path option.

set :breakfast_roles, -> { :web, :app }
set :breakfast_npm_path, "/usr/bin/npm"
set :breakfast_npm_install_command, "install"

The servers that run asset compilation will need to have node installed.