From: Mark S. Miller [mailto:erig...@google.com]
> In this situation, it will try and succeed. This more closely obeys the > intent in the original code (e.g., the comment in the jQuery code), since it > creates a non-configurable property on the *Window* W. It does not violate > any invariant, since all that's observable on the *WindowProxy* (given the > rest of your draft spec, which remain unchanged) is a configurable property > of the same name. Ah, I see! So then another non-intuitive (but invariant-preserving) consequence would be: ```js Object.defineProperty(window, "prop", { value: "foo" }); var propDesc = Object.getOwnPropertyDescriptor(window, "prop"); if (propDesc.configurable) { Object.defineProperty(window, "prop", { value: "bar" }); // this will fail, even though the property is supposedly configurable, // since when it forwards from the WindowProxy `window` to the underlying // Window object, it the Window's [[DefineOwnProperty]] fails. } ``` Am I getting this right? _______________________________________________ es-discuss mailing list es-discuss@mozilla.org https://mail.mozilla.org/listinfo/es-discuss