Comment #5 on issue 3565 by [email protected]: Generator function
deviations from ES6
https://code.google.com/p/v8/issues/detail?id=3565
I'm not sure that works in general. For example:
var iter1 = (function*(){})();
var iter2 = Object.create(iter);
iter2 will have the next method of the iter1 --
GeneratorFunction.prototype.next -- but not the "internal slots"
corresponding to generator state.
For the same reason:
var iter3 = [1,2,3][Symbol.iterator]();
var iter4 = Object.create(iter3);
iter4 has the ArrayIterator next function, but not the ArrayIterator
internal state. Or is it the case that "internal state" is allowed to be a
non-own-property?
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