return several values with autocb in iced coffee script

Question

How to return couple values in iced coffee script using return and autocb?

Without autocb I can do:

func = (cb)=>
   cb returnVal1, returnVal2

How to implement this using autocb? This code ...

func = (autocb)=>
   return returnVal1, returnVal2 

... throws error:

SyntaxError: unexpected ,

Answer 1

You are getting an error because you can't return more than one value in JavaScript. You could wrap the two values in an array and destructure it after calling...

func = (autocb)=>
   return [returnVal1, returnVal2] 

await func defer(returnVals)
[returnVal1, returnVal2] = returnVals

...but you should probably just use your first example. autocb is simple syntactical sugar (one argument instead of one line), and not at all necessary to using IcedCoffeeScript.

Answer 2

Destructuring will work as mentioned here: https://github.com/maxtaco/coffee-script/issues/29

func = (thing, autocb) ->
   thing1 = doSomething(thing)
   thing2 = doSomethingElse(thing)

   {thing1, thing2}


await funct thing, defer {thing1, thing2}

console.log "#{thing1} and #{thing2}"