660235 - Remove JSRESOLVE_DETECTING and replace with a special object that evaluates to false

Status: RESOLVED DUPLICATE of bug 792108

(Core :: DOM: Core & HTML, defect)

Description

[Andreas Gal :gal]

To express document.all() in IDL we can't rely on the resolve magic any more. WebKit uses a special class that is caught in ValueToPrimitive on a slow path. We would match WebKit, and it would help our DOM bindings.

Comment 1

[Andreas Gal :gal]

Brendan pointed out that we can model all as a random document.id property, for which we need a resolve hook onto the direct object (document instance, not document.prototype) anyway, so we can stick with the resolve machinery here. He also mentioned that TC39 doesn't like the magic -to-false or to-undefined conversion, and that its less compatible than what we do. Dropping the dependent bug for now.