Bergi (2015-04-27T22:34:10.000Z)
No, it must return a new object every time.

See 
https://esdiscuss.org/topic/performance-of-iterator-next-as-specified 
for the last discussion on this.

  Bergi
d at domenic.me (2015-05-11T17:01:17.287Z)
No, it must return a new object every time.

See 
https://esdiscuss.org/topic/performance-of-iterator-next-as-specified 
for the last discussion on this.