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37 lines
1.0 KiB
JavaScript
37 lines
1.0 KiB
JavaScript
Promise.all = Promise.all || function () {
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var args = Array.prototype.slice.call(arguments.length === 1 && Array.isArray(arguments[0]) ? arguments[0] : arguments);
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return new Promise(function (resolve, reject) {
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if (args.length === 0) return resolve([]);
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var remaining = args.length;
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function res(i, val) {
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try {
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if (val && (typeof val === 'object' || typeof val === 'function')) {
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var then = val.then;
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if (typeof then === 'function') {
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then.call(val, function (val) { res(i, val) }, reject);
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return;
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}
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}
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args[i] = val;
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if (--remaining === 0) {
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resolve(args);
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}
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} catch (ex) {
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reject(ex);
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}
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}
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for (var i = 0; i < args.length; i++) {
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res(i, args[i]);
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}
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});
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};
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Promise.race = Promise.race || function (values) {
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return new Promise(function (resolve, reject) {
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for(var i = 0, len = values.length; i < len; i++) {
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values[i].then(resolve, reject);
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}
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});
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};
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