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21 lines
763 B
JavaScript
21 lines
763 B
JavaScript
6 years ago
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// https://github.com/tc39/proposal-promise-finally
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'use strict';
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var $export = require('./_export');
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var core = require('./_core');
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var global = require('./_global');
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var speciesConstructor = require('./_species-constructor');
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var promiseResolve = require('./_promise-resolve');
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$export($export.P + $export.R, 'Promise', { 'finally': function (onFinally) {
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var C = speciesConstructor(this, core.Promise || global.Promise);
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var isFunction = typeof onFinally == 'function';
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return this.then(
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isFunction ? function (x) {
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return promiseResolve(C, onFinally()).then(function () { return x; });
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} : onFinally,
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isFunction ? function (e) {
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return promiseResolve(C, onFinally()).then(function () { throw e; });
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} : onFinally
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);
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} });
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