Erik Arvidsson wrote:
On Tue, Nov 13, 2012 at 3:25 PM, Tom Van Cutsem <tomvc...@gmail.com
<mailto:tomvc...@gmail.com>> wrote:
So, my proposal: let's revert the fundamental traps of Handler to
become abstract methods again. This forces subclasses of Handler
to provide all fundamentals at once, avoiding the footgun.
Maybe we should skip the derived traps for ES6 and see if the extra
allocation really becomes an issue in reality? This way we are keeping
the API smaller and the risk of errors lower. We can always add the
derived traps later, can't we?
Allocations always matter, in my experience -- even with V8.
Also Tom's point about precision counts, independent of allocations. A
"hasOwn" test in the MOP should not call the same thing that
Object.getOwnPropertyDescriptor calls, if we can help it -- especially
without a flag argument to hint the difference, but that flag argument
is blecherous anyway.
/be
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