blob: ab2ce08b55c9b76ad1ba48c53f79e8e93bd56660 [file] [log] [blame]
'use strict';
var $ = require('../internals/export');
var getBuiltIn = require('../internals/get-built-in');
var speciesConstructor = require('../internals/species-constructor');
var promiseResolve = require('../internals/promise-resolve');
// `Promise.prototype.finally` method
// https://tc39.github.io/ecma262/#sec-promise.prototype.finally
$({ target: 'Promise', proto: true, real: true }, {
'finally': function (onFinally) {
var C = speciesConstructor(this, getBuiltIn('Promise'));
var isFunction = typeof onFinally == 'function';
return this.then(
isFunction ? function (x) {
return promiseResolve(C, onFinally()).then(function () { return x; });
} : onFinally,
isFunction ? function (e) {
return promiseResolve(C, onFinally()).then(function () { throw e; });
} : onFinally
);
}
});