On 9/20/2013 6:27 PM, Brandon Benvie wrote:
Actually, taking the precedent of removing "getPropertyDescriptor", it's "has" that would be removed. The implementation of [[Has]] can easily walk the [[GetPrototype]] chain calling "hasOwn" on each until true or [[GetPrototype]] returns null. In fact, some agreed for a short time to *remove* the "has" trap specifically for this reason, but it was added back.
Better link: https://mail.mozilla.org/pipermail/es-discuss/2012-November/026286.html
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