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// |reftest| skip-if(!this.hasOwnProperty('Iterator'))
const iteratorHelperProto = Object.getPrototypeOf([].values().map(x => x));
function *gen() {
yield 1;
}
assertThrowsInstanceOf(() => iteratorHelperProto.next.call(gen()), TypeError);
assertThrowsInstanceOf(() => iteratorHelperProto.return.call(gen()), TypeError);
assertThrowsInstanceOf(() => iteratorHelperProto.throw.call(gen()), TypeError);
if (typeof reportCompare == 'function')
reportCompare(0, 0);