Magic config inheritance

magic.coffee

class Base
    constructor: ->
        @config()

    config: ->
        magic = (options) =>
            @config = {} if typeof @config is 'function'
            @config[option] = value for option, value of options

            return magic

class Thing extends Base
    config: ->
        super()
            foo: 100
            bar: 200
            bool: true

class ExtendedThing extends Thing
    config: ->
        super()
            success: 'success'
            fail: 'fail'

et = new ExtendedThing
console.log et.config