On 15 February 2013 14:29, Brandon Benvie <bben...@mozilla.com> wrote: > I definitely agree that something like "preventAccidentalExtensions" > (disallows new properties through [[Put]] but not [[DefineOwnProperty]]) has > more common uses cases than preventExtensions, and for the precise reasons > that David said. The security is against bugs usually, not attackers. > PreventExtensions is a clumsy tool for managing capabilities because it > leaves no room for giving *some* code permission while preventing other code, > which is exactly what we want when the clueful *me* of now is writing code to > manage the clueless *I* of the future.
If you need private extensibility, just complement preventExtensions with installing a private map or expando object. /Andreas _______________________________________________ es-discuss mailing list es-discuss@mozilla.org https://mail.mozilla.org/listinfo/es-discuss
