Normative: properly close iterator in Array.from

tc39 · Feb 6, 2016 · 1e71565 · 1e71565
1 parent 28bdf07
commit 1e71565
Showing 1 changed file with 3 additions and 1 deletion.
diff --git a/spec.html b/spec.html
@@ -29385,7 +29385,9 @@ <h1>Array.from ( _items_ [ , _mapfn_ [ , _thisArg_ ] ] )</h1>
             1. Let _iterator_ be ? GetIterator(_items_, _usingIterator_).
             1. Let _k_ be 0.
             1. Repeat
-              1. If _k_ &ge; 2<sup>53</sup>-1, throw a *TypeError* exception.
+              1. If _k_ &ge; 2<sup>53</sup>-1, then
+                1. Let _error_ be Completion{[[type]]: ~throw~, [[value]]: a newly created *TypeError* object, [[target]]:~empty~}.
+                1. Return ? IteratorClose(_iterator_, _error_).
               1. Let _Pk_ be ! ToString(_k_).
               1. Let _next_ be ? IteratorStep(_iterator_).
               1. If _next_ is *false*, then