On 6/17/15 1:54 PM, Jordan Harband wrote:
Could I not use `Object(Symbol.for('some global registry symbol'))` as a
`WeakMap` key? That would return a realm-specific object, of course.
Object(Symbol.for("x")) == Object(Symbol.for("x")) tests false. That's
because http://www.ecma-international.org/ecma-262/6.0/#sec-object-value
reaches step 3 which lands you in
http://www.ecma-international.org/ecma-262/6.0/#sec-toobject which
returns a new Symbol object every time.
So while you _could_ use Object(Symbol.for('some global registry
symbol')) as a weakmap key it would not be terribly useful unless you
hung on to that object somewhere.
-Boris
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