On Feb 25, 2011, at 1:12 PM, Boris Zbarsky wrote: > On 2/25/11 4:08 PM, David Bruant wrote: >> I would tend to be more in favor of disallowing Harmony features in >> non-strict code (without explicit "use strict" directive) to avoid >> surprises (I'm nuancing below). > > I was under the impression that Harmony features would only be allowed for > scripts that opt in to them (via the type or language of the <script> tag or > whatnot). Does that alleviate this concern? > > -Boris
The other subtlety is that this only applies only to the actual language features not to the behavior of objects. Any new property added to the existing built-in objects will most likely be visible to non-harmony code and function and objects defined using harmony features (including Proxy) can be passed to and accessed by non-harmony code. This is comparable to what happens in ES5 where non-strict code may call a strict mode function. Allen _______________________________________________ es-discuss mailing list es-discuss@mozilla.org https://mail.mozilla.org/listinfo/es-discuss
