Coffee Machine

Super simple state machine class, for Coffeescript or Javascript.

Usage

To initialize a new state machine:

var machine = new Machine()

To add a new state:

machine.state 'grinding'
  'onenter': -> grinder.start()
  'onleave': -> return grounds

You can totally chain any state machine methods together, too. So you can do this kind of thing:

machine.state 'brewing'
  'onenter': -> 
    add_water
    heating_element.start()
  'onleave': ->
    return coffee
.state 'serving'
  'onleave': -> return pour_coffee()
.state 'grinding'

To query a machine's state:

machine.state() # => "grinding"

To transition to a new state:

machine.state 'brewing'

Either of the onenter or onleave callbacks may return a value, but both cannot.