The most prominent feature of this new API is its support for creating proxies:
virtual objects that behave as regular objects, but whose entire “meta-object
the API, we describe a more general set of design principles that helped steer the
API’s design, and which should be applicable to similar APIs for other languages.
We also describe access control abstractions implemented in the new API, and
provide an operational semantics of an extension of the untyped lambda-calculus