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// |reftest| skip-if(!this.hasOwnProperty('Iterator')) -- Iterator is not enabled unconditionally
const iter = {
next: () => ({ done: false, value: 0 }),
return: (value) => ({ done: true, value }),
};
const wrap = Iterator.from(iter);
let {done, value} = wrap.return(1);
assertEq(done, true);
assertEq(value, 1);
iter.return = () => { throw new Error(); };
assertThrowsInstanceOf(wrap.return, Error);
iter.return = null;
let nullResult = wrap.return(2);
assertEq(nullResult.done, true);
assertEq(nullResult.value, 2);
if (typeof reportCompare === 'function')
reportCompare(0, 0);
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