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44 lines
1.5 KiB
JavaScript
44 lines
1.5 KiB
JavaScript
'use strict';
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var $ = require('../internals/export');
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var aFunction = require('../internals/a-function');
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var newPromiseCapabilityModule = require('../internals/new-promise-capability');
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var perform = require('../internals/perform');
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var iterate = require('../internals/iterate');
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// `Promise.allSettled` method
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// https://tc39.es/ecma262/#sec-promise.allsettled
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$({ target: 'Promise', stat: true }, {
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allSettled: function allSettled(iterable) {
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var C = this;
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var capability = newPromiseCapabilityModule.f(C);
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var resolve = capability.resolve;
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var reject = capability.reject;
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var result = perform(function () {
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var promiseResolve = aFunction(C.resolve);
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var values = [];
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var counter = 0;
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var remaining = 1;
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iterate(iterable, function (promise) {
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var index = counter++;
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var alreadyCalled = false;
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values.push(undefined);
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remaining++;
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promiseResolve.call(C, promise).then(function (value) {
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if (alreadyCalled) return;
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alreadyCalled = true;
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values[index] = { status: 'fulfilled', value: value };
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--remaining || resolve(values);
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}, function (error) {
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if (alreadyCalled) return;
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alreadyCalled = true;
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values[index] = { status: 'rejected', reason: error };
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--remaining || resolve(values);
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});
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});
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--remaining || resolve(values);
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});
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if (result.error) reject(result.value);
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return capability.promise;
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}
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});
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