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// Deleting the .next method of an iterator in the middle of a for-of loop
// doesn't cause a TypeError at the next iteration.
load(libdir + "asserts.js");
load(libdir + "iteration.js");
var iterProto = Object.getPrototypeOf([][Symbol.iterator]());
var s = '';
for (var v of ['duck', 'duck', 'duck', 'goose', 'and now you\'re it']) {
s += v;
if (v === 'goose')
delete iterProto.next;
s += '.';
}
assertEq(s, 'duck.duck.duck.goose.and now you\'re it.');