Would a better solution to simply say that Object.freeze also freeze the values of any internal properties. If there are exceptions we can explicitly identify them for the specific built-in objects. This seems like a better solution then changing a lot of built-in properties to being accessors.
Arguably, this was an oversight in drafting ES5. Finally, please submit work items like this to bugs.emcascrpt.org as a bug against "Draft for 6th Edition". that way they won't get lost. Allen On Jul 1, 2011, at 6:01 PM, Mark S. Miller wrote: > Thanks David, > > Yes, this is important. The way I noticed it is that the same issue came up > for the FF implementation of WeakMaps > <https://bugzilla.mozilla.org/show_bug.cgi?id=656828>. I will be proposing > the to-be-fixed Mozilla API to the committee to become the new WeakMap > proposal -- making it more consistent with Map and Set. But not at the > upcoming meeting -- it's not on the agenda. > > In the meantime, > <http://google-caja.googlecode.com/svn/trunk/src/com/google/caja/ses/repairES5.js> > repairs this and many other problems encountered in today's almost-ES5 > implementations. Except for this issue with Date and WeakMap, all the other > repairs in that file are spec non-conformances. See the kludges list at > <http://code.google.com/p/google-caja/source/browse/trunk/src/com/google/caja/ses/repairES5.js#989> > for cross referencing between these repairs, various bug threads, and > Sputnik/test262 test names. > > > On Fri, Jul 1, 2011 at 12:28 PM, David Bruant <[email protected]> wrote: > Hi, > > I just wanted to put on es-discuss the concern raised by Mark Miller [1] > about mutable internal properties of Date.prototype and that it should > be fixed in the next version of ECMAScript. > > David > > [1] http://code.google.com/p/google-caja/issues/detail?id=1362 > > > > -- > Cheers, > --MarkM > _______________________________________________ > es-discuss mailing list > [email protected] > https://mail.mozilla.org/listinfo/es-discuss
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