how to help with ES6 features

[Jim Laskey (Oracle)]

If we can get more people involved, maybe I should come up with some scheme of free Nashorn t-shirts for those people that contribute code. :-) 


> On Apr 27, 2017, at 9:07 AM, Paulo Lopes <pmlopes at gmail.com> wrote:
> 
> I can make it work with nashorn. Currently it does run on nashorn jdk8 plus
> I need a executor impl for the async part. Of course I'm using vert.x for
> this ;) However this could be a runtime configuration and by default use a
> simple ThreadPool as it exists on the JDK itself and allow (say with some
> runtime config) to provide a custom executor.
> 
> The executor is basically the equivalent of the not yet standard:
> 
> setImmediate(function);
> 
> Or node's:
> 
> nextTick(function);
> 
> So in nashorn it can be just a java.lang.Runnable and a ThreadPoolExecutor.
> 
> Cheers,
> Paulo
> 
> 
> On Thu, Apr 27, 2017 at 1:49 PM, Hannes Wallnöfer <
> hannes.wallnoefer at oracle.com> wrote:
> 
>> Hi Paulo,
>> 
>> Excellent! I’d be happy to help you and sponsor this work.
>> 
>> Do you think your existing code would work in Nashorn, or would it be a
>> reimplementation based on that prototype? In any case, a link to the code
>> would be nice to get an idea of what’s involved.
>> 
>> Also, before contributing to OpenJDK you have to sign and send in the
>> committer agreement as described in http://openjdk.java.net/contribute/ .
>> If you aren’t a committer already we can help you with this.
>> 
>> Hannes
>> 
>> 
>>> Am 27.04.2017 um 13:16 schrieb Paulo Lopes <pmlopes at gmail.com>:
>>> 
>>> Hi,
>>> 
>>> For Vert.x javascript support I've prototyped the Promise API as per:
>>> 
>>> https://developer.mozilla.org/en-US/docs/Web/JavaScript/
>> Reference/Global_Objects/Promise
>>> http://www.ecma-international.org/ecma-262/6.0/#sec-promise-objects
>>> 
>>> I see that it is not in the complete list, If someone would "mentor" me
>> with how to get it in nashorn, I'd gladly contribute the code.
>>> 
>>> As an example here's some demo:
>>> 
>>> https://gist.github.com/pmlopes/3d86f67943b3ffd9dd9aff73067de0a2
>>> 
>>> And it has been tested to work with babel.js to allow transpiling
>> `async` `await` to Promise API.
>>> 
>>> Cheers,
>>> Paulo
>>> 
>>> 
>>> On Wed, Apr 26, 2017 at 4:38 PM, Hannes Wallnöfer <
>> hannes.wallnoefer at oracle.com> wrote:
>>> Here’s a list of things we have working and things we don’t:
>>> 
>>> https://bugs.openjdk.java.net/browse/JDK-8066046
>>> 
>>> ES6 support in the parser is pretty much complete, so some features are
>> arrow functions are ‚almost‘ working, and others may not require too much
>> effort.
>>> 
>>> Hannes
>>> 
>>> 
>>>> Am 26.04.2017 um 16:18 schrieb Karl Pietrzak <kap4020 at gmail.com>:
>>>> 
>>>> On Wed, Apr 26, 2017 at 10:14 AM, Hannes Wallnöfer <
>>>> hannes.wallnoefer at oracle.com> wrote:
>>>> 
>>>>> ES6 support is still work in progress, we only support some of it, so
>>>>> making it the default wouldn’t be a good idea.
>>>>> 
>>>> 
>>>> 
>>>> Is there a feature I can help with?   If someone points me in the right
>>>> direction, I can submit a patch.  I don't see anything in JIRA, really.
>>> 
>>> 
>>> 
>>> 
>>> --
>>> Paulo Lopes
>>> www.jetdrone.com
>> 
>> 
> 
> 
> -- 
> Paulo Lopes
> www.jetdrone.com