Adding a CoffeeScript equivalent to Rake/Make/Jake (Cake, naturally), and implementing all of our build and test tasks in the Cakefile. Run bin/cake to see the tasks.

src/cake.coffee

@@ -0,0 +1,39 @@
+# `cake` is a simplified version of Make (Rake, Jake) for CoffeeScript.
+
+fs:       require 'fs'
+path:     require 'path'
+coffee:   require 'coffee-script'
+
+tasks: {}
+
+# Mixin the Cake functionality.
+process.mixin {
+
+  # Define a task with a name, a description, and the action itself.
+  task: (name, description, action) ->
+    tasks[name]: {name: name, description: description, action: action}
+
+  # Invoke another task in the Cakefile.
+  invoke: (name) ->
+    tasks[name].action()
+}
+
+# Display the list of Cake tasks.
+print_tasks: ->
+  for name, task of tasks
+    spaces: 20 - name.length
+    spaces: if spaces > 0 then (' ' for i in [0..spaces]).join('') else ''
+    puts "cake " + name + spaces + ' # ' + task.description
+
+# The CommandLine handles all of the functionality of the `coffee` utility.
+exports.run: ->
+  path.exists 'Cakefile', (exists) ->
+    throw new Error('Cakefile not found in ' + process.cwd()) unless exists
+    args: process.ARGV[2...process.ARGV.length]
+    fs.cat('Cakefile').addCallback (source) ->
+      eval coffee.compile source
+      return print_tasks() unless args.length
+      for arg in args
+        throw new Error('No such task: "' + arg + '"') unless tasks[arg]
+        tasks[arg].action()
+