Comment #32 on issue 1543 by [email protected]: Implement Proxy
proposal
http://code.google.com/p/v8/issues/detail?id=1543
The Node.js team has a use for direct proxies: allowing us to create fake
globals that intercept defineProperties on them for use in the vm module.
Currently we use ObjectTemplate which has GlobalPropertyGetterCallback,
GlobalPropertySetterCallback, GlobalPropertyQueryCallback,
GlobalPropertyDeleterCallback, GlobalPropertyEnumeratorCallback, but this
does not encompass all operations. In particular, it does not have
defineProperty, so if people declare global functions inside the vm, we
have no way to intercept that.
If direct proxies were available, we could turn them on in V8, then use
them to implement this desired proxying behavior. As is, we shouldn't turn
on --harmony-proxies, because then Node.js consumers would start using the
old API.
More details about the particular use case at
https://github.com/joyent/node/pull/6417.
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