To confirm what Allen already mentioned: I too concluded from the discussion that we would remove [[Invoke]] from ES6.
It is one of a few items I would like to put on the agenda of the TC39 November meeting to get a definitive consensus (the other item being the removal of the hasOwn() trap, for which there also was consensus on the list). Regards, Tom 2013/10/18 Allen Wirfs-Brock <[email protected]> > > On Oct 18, 2013, at 11:06 AM, Brandon Benvie wrote: > > > On 10/18/2013 11:01 AM, Allen Wirfs-Brock wrote: > >> What your question does help me be more decisive on: We should not be > in a rush to add an Invoke, InvokeFunction, or any new traps not needed for > membranes, and not subject to a long history of examination. Invoke at > least, as a derived trap, can always be added later, after ES6. > > > > Isn't there observably different behavior different depending on whether > invoke exists or not? Even if you don't implement it in your handler? If > that's the case, then it's not guaranteed that it can be added later down > the line. > > Yes, and those differences are not easily fixable in the context of the > current Proxy design. As currently defined, some possible uses of Proxies > will be "broken" regardless of whether or not [[Invoke]] is there. Yet, > the only reason to add [[Invoke]] at this time would be to try to fix > issues with Proxies but even with [[Invoke]] we still have issues. And. > for ES6, we're run of time for experimenting with fixes. However, as Mark > pointed out, experts can make them work for specific use cases and they are > essential for supporting membranes. So we can live with the exiting design > (without [[Invoke]]) as an expert feature for building membranes and > similar use cases. > > If we ever come up with a better design (perhaps including [[Invoke]]) we > can always introduce a new kind of proxy that works with it. > > Allen > _______________________________________________ > es-discuss mailing list > [email protected] > https://mail.mozilla.org/listinfo/es-discuss >
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