Is it safe to delete elements in a set while iterating with for..of?

Is it specified that you can delete any element in an instance of Set while iterating using for..of and that

• you won't iterate more than once on an element


• you won't miss any other element that was in the set at the start of the iteration other than the ones you remove

?

Is there a general guarantee of ES6 iterators regarding deletion while iterating using for..of ?