Iterator interface should not have @@iterator method

[mcheshkov]

25.1.1.2 The Iterator Interface must have only next method. ATM both interface $Iterator and interface $Iterable have @@iterator method. Why is that?

[vkurchatkin]

It's basically a hack to support iterables which will eventually go away, but I think that something like:

[].@@iterator()

shouldn't even parse

[vkurchatkin]

See: #1163

[mcheshkov]

But that's other question. There should not be neither @@iterator nor Symbol.iterator on Iterator interface, only next is required. Should I add that to mentioned issue?

[vkurchatkin]

Interesting. Builtin iterators are definitely iterable themselves. I'll reopen for now.

[vkurchatkin]

Ok, it seems that you are right and Symbol.iterator is not required for iterators