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// |reftest| skip-if(!this.hasOwnProperty('Iterator'))
//
//
/*---
esid: pending
description: %Iterator.prototype%.flatMap skips empty inner iterables.
info: >
Iterator Helpers proposal 2.1.5.7
1. Repeat,
...
i. Repeat, while innerAlive is true,
...
iii. Let innerComplete be IteratorComplete(innerNext).
...
v. If innerComplete is true, set innerAlive to false.
features: [iterator-helpers]
---*/
let iter = [0, 1, 2, 3].values().flatMap(x => x % 2 ? [] : [x]);
for (const expected of [0, 2]) {
const result = iter.next();
assertEq(result.value, expected);
assertEq(result.done, false);
}
let result = iter.next();
assertEq(result.value, undefined);
assertEq(result.done, true);
iter = [0, 1, 2, 3].values().flatMap(x => []);
result = iter.next();
assertEq(result.value, undefined);
assertEq(result.done, true);
if (typeof reportCompare == 'function')
reportCompare(0, 0);
|
