Join API

join-api-async.coffee

"use strict"
api1 =
  a: (x,y,z,cb) -> setTimeout cb.bind(null, null, x+y+z+1), 500
  b: (x,y,z,cb) -> setTimeout cb.bind(null, null, x+y+z+2), 500
    
api2 =
  b: (x,y,z,cb) -> setTimeout cb.bind(null, null, x+y+z+3), 500
  c: (x,y,z,cb) -> setTimeout cb.bind(null, null, x+y+z+4), 500
  
join = ->
  newapi = {}
  for api in arguments
    for key, val of api
      #already exists
      if newapi[key]
        newapi[key].fns.push val
        continue
      #close around key and api, then init
      ((key, api) ->
        newapi[key] = ->
          args = Array::slice.call arguments
          callback = args.pop()
          asyncs = []
          for fn in newapi[key].fns
            asyncs.push async.apply.apply null, [fn].concat args 
          async.parallel asyncs, callback
          null
        newapi[key].fns = [val]
      )(key,api)
  newapi

all = join(api1, api2)

all.a 3,3,3,(err, results) ->
  results
  # [ 11, 12 ]

join-api.coffee

api1 =
  a: -> 1
  b: -> 2
    
api2 =
  b: -> 3
  c: -> 4
  
join = ->
  result = {}
  for api in arguments
    for key, val of api
      #already exists
      if result[key]
        result[key].fns.push val
        continue
      #close around key and api, then init
      ((key, api) ->
        result[key] = ->
          rets = []
          for fn in result[key].fns
            rets.push fn.apply null, arguments
          rets
        result[key].fns = [val]
      )(key,api)
  result

joint = join(api1, api2)

json joint.b() # [2,3]

nogauridan

how to add nogaurdian