--- /dev/null
+'use strict';
+var $ = require('../internals/export');
+var aFunction = require('../internals/a-function');
+var newPromiseCapabilityModule = require('../internals/new-promise-capability');
+var perform = require('../internals/perform');
+var iterate = require('../internals/iterate');
+
+// `Promise.allSettled` method
+// https://github.com/tc39/proposal-promise-allSettled
+$({ target: 'Promise', stat: true }, {
+ allSettled: function allSettled(iterable) {
+ var C = this;
+ var capability = newPromiseCapabilityModule.f(C);
+ var resolve = capability.resolve;
+ var reject = capability.reject;
+ var result = perform(function () {
+ var promiseResolve = aFunction(C.resolve);
+ var values = [];
+ var counter = 0;
+ var remaining = 1;
+ iterate(iterable, function (promise) {
+ var index = counter++;
+ var alreadyCalled = false;
+ values.push(undefined);
+ remaining++;
+ promiseResolve.call(C, promise).then(function (value) {
+ if (alreadyCalled) return;
+ alreadyCalled = true;
+ values[index] = { status: 'fulfilled', value: value };
+ --remaining || resolve(values);
+ }, function (e) {
+ if (alreadyCalled) return;
+ alreadyCalled = true;
+ values[index] = { status: 'rejected', reason: e };
+ --remaining || resolve(values);
+ });
+ });
+ --remaining || resolve(values);
+ });
+ if (result.error) reject(result.value);
+ return capability.promise;
+ }
+});