--- /dev/null
+'use strict';
+// https://github.com/tc39/proposal-iterator-helpers
+var $ = require('../internals/export');
+var iterate = require('../internals/iterate');
+var aFunction = require('../internals/a-function');
+var anObject = require('../internals/an-object');
+
+$({ target: 'Iterator', proto: true, real: true }, {
+ some: function some(fn) {
+ anObject(this);
+ aFunction(fn);
+ return iterate(this, function (value, stop) {
+ if (fn(value)) return stop();
+ }, { IS_ITERATOR: true, INTERRUPTED: true }).stopped;
+ }
+});