Le 19/12/2012 16:34, Brandon Benvie a écrit :
That's easily solved by making the accessor have a null prototype and
frozen though.
True, but it makes that you can't re-apply these getters and setters
with .call.
Since the getter doesn't inherit from Function.prototype any longer, you
have to go through
Function.prototype.call.call(webIDLGetter, context)
or
var call = Function.prototype.call.bind(Function.prototype.call);
call(webIDLGetter, context);
Since recontextualizing getter/setter is probably one of their main use
case, I wish this wasn't the chosen solution.
I'd like to point out that recently on Twitter, Eddy Bruel, (who among
other things implemented direct proxies on SpiderMonkey) shared his
trouble understanding the Function.prototype.call.bind trick [1] If he
has trouble, I'm sure thousands (millions?) of less educated JS devs
will do too.
I prefer the configurable:true solution so far.
David
[1] https://twitter.com/ejpbruel/status/276747606951071744
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