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// |reftest| skip-if(!this.hasOwnProperty('AsyncIterator'))
//
//
/*---
esid: pending
description: Lazy Iterator Helper methods return new iterator result objects.
info: >
Iterator Helpers proposal 2.1.6
features: [iterator-helpers]
---*/
const iterResult = {done: false, value: 1, testProperty: 'test'};
class TestIterator extends AsyncIterator {
async next() {
return iterResult;
}
}
async function* gen(x) { yield x; }
const methods = [
iter => iter.map(x => x),
iter => iter.filter(x => true),
iter => iter.take(1),
iter => iter.drop(0),
iter => iter.asIndexedPairs(),
iter => iter.flatMap(gen),
];
// Call `return` before stepping the iterator:
for (const method of methods) {
const iter = new TestIterator();
const iterHelper = method(iter);
iterHelper.next().then(result => {
assertEq(result == iterResult, false);
assertEq(result.testProperty, undefined);
});
}
if (typeof reportCompare == 'function')
reportCompare(0, 0);
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