Error: onException argument must be a function, string or undefined for Meteor.bindEnvironment()

How do I wrap a function in a fiber context? Help me please(

i want this:


setInterval Meteor.bindEnvironment ->
  user = Meteor.users.findOne().fetch()
  console.log(user)
, 1000

how i can do it? i get Error: onException argument must be a function, string or undefined for Meteor.bindEnvironment()

p.s. i not want use Meteor.setInterval, I use setInterval as an example only to understand how I can wrap any function in a fiber context.

in a real application I want like this:

app = express()

express.get '/', Meteor.wrapFunction ->
  user = Meteor.users.fondOne().fetch()
  console.log(user)