Awaiting thenables

Mark S. Miller erights at google.com
Fri Jun 26 21:14:53 UTC 2015


Y

-- 
  Cheers,
  MarkM

On Jun 26, 2015 2:07 PM, "Jordan Harband" <ljharb at gmail.com> wrote:

> so, in other words, `await thenable` would wrap the thenable in
> `Promise.resolve`, which would ensure it fires on the next tick?
>
> On Fri, Jun 26, 2015 at 12:36 PM, Mark S. Miller <erights at google.com>
> wrote:
>
>> It would be postponed to a later job, i.e., turn of the event loop.
>>
>> --
>>   Cheers,
>>   MarkM
>>
>> On Jun 26, 2015 11:49 AM, "Francisco Tolmasky" <tolmasky at gmail.com>
>> wrote:
>>
>>> Apologies, I’m aware the last example didn’t make sense. What I meant
>>> was more along the lines of the following:
>>>
>>> setImmediateOrOtherNextRunLoopMethod(function() { console.log(6) })
>>> console.log(await { then: function(x) { x(5) } })
>>>
>>> In other words, would the “then” fire on the same run loop (since it
>>> isnt a fancy Promise), or still have the underlying await engine (step
>>> function) make sure it takes place on the next iteration (and in this case
>>> thus possibly make it show up after the 6 instead of beefore).
>>>
>>>
>>> On Fri, Jun 26, 2015 at 11:40 AM, Francisco Tolmasky <tolmasky at gmail.com
>>> > wrote:
>>>
>>>> Out of curiosity, in ES7, would the following code:
>>>>
>>>> console.log(await { then: function(x) { x(5) } })
>>>> console.log(6)
>>>>
>>>> Print out 5 then 6, or still 6 then 5? In other words, is the
>>>> asynchronousness gauranteed by the await, or by the underlying Promise
>>>> implementation?
>>>>
>>>>
>>>> --
>>>> Francisco Tolmasky
>>>> www.tolmasky.com
>>>> tolmasky at gmail.com
>>>>
>>>
>>>
>>>
>>> --
>>> Francisco Tolmasky
>>> www.tolmasky.com
>>> tolmasky at gmail.com
>>>
>>> _______________________________________________
>>> es-discuss mailing list
>>> es-discuss at mozilla.org
>>> https://mail.mozilla.org/listinfo/es-discuss
>>>
>>>
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>
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