Source code
Revision control
Copy as Markdown
Other Tools
// |reftest| shell-option(--enable-promise-allkeyed) skip-if(!Promise.allKeyed||!xulRuntime.shell) async -- await-dictionary is not enabled unconditionally, requires shell-options
// Copyright (C) 2026 Danial Asaria (Bloomberg LP). All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
esid: sec-performpromiseallkeyed
description: >
Keys whose property descriptor has [[Enumerable]] false are skipped
info: |
PerformPromiseAllKeyed ( variant, promises, constructor, resultCapability, promiseResolve )
...
6. For each element key of allKeys, do
a. Let desc be ? promises.[[GetOwnProperty]](key).
b. If desc is not undefined and desc.[[Enumerable]] is true, then
...
includes: [asyncHelpers.js]
flags: [async]
features: [await-dictionary, Reflect]
---*/
var input = Object.create(null);
Object.defineProperty(input, "a", {
value: Promise.resolve(1),
enumerable: true,
configurable: true
});
Object.defineProperty(input, "b", {
value: Promise.resolve(2),
enumerable: false,
configurable: true
});
Object.defineProperty(input, "c", {
value: Promise.resolve(3),
enumerable: true,
configurable: true
});
asyncTest(function() {
return Promise.allKeyed(input).then(function(result) {
assert.sameValue(Object.getPrototypeOf(result), null, "result is null-prototype");
var keys = Reflect.ownKeys(result);
assert.sameValue(keys.length, 2, "only enumerable keys are present");
assert.sameValue(keys[0], "a", "first key");
assert.sameValue(keys[1], "c", "second key");
assert.sameValue(result.a, 1, "result.a");
assert.sameValue(result.c, 3, "result.c");
});
});