coffee-mixin

Powerful mixins and monkeypatches for coffeescript.

mix = require("coffee-mixin")

class A
  constructor: -> console.log "hello"
  world: ->       console.log "world"

class B

  constructor: -> super()
  world:       -> super()

C = mix A, B

new C().world()
  #
  # hello
  # world

The mix function takes any number of classes as parameters.

Wrap Super (Monkeypatch)

Automatically call super before or after each function is executed.

Prepend Example

Transparently monkeypatch, even on constructors!

mix = require("coffee-mixin")

class A

  # CoffeeScript does not `return` by default in constructors.
  #
  constructor: -> return "hel"
  world:       -> "wor"

class B
  constructor: (str) -> console.log "#{str}lo"
  world:       (str) -> console.log "#{str}ld"

C = mix A, B, prepend: true

new C().world()
  #
  # hello
  # world

Append Example

mix = require("coffee-mixin")

class A
  constructor: (str) -> console.log "#{str}lo"
  world:       (str) -> console.log "#{str}ld"

class B

  # CoffeeScript does not `return` by default in constructors.
  #
  constructor: -> return "hel"
  world:       -> "wor"

C = mix A, B, append: true

new C().world()
  #
  # hello
  # world