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Versions: 13
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Stored size: 1.53 KB
Contents
'use strict';
var $ = require('../internals/export');
var IS_PURE = require('../internals/is-pure');
var NativePromise = require('../internals/native-promise-constructor');
var fails = require('../internals/fails');
var getBuiltIn = require('../internals/get-built-in');
var speciesConstructor = require('../internals/species-constructor');
var promiseResolve = require('../internals/promise-resolve');
var redefine = require('../internals/redefine');
// Safari bug https://bugs.webkit.org/show_bug.cgi?id=200829
var NON_GENERIC = !!NativePromise && fails(function () {
NativePromise.prototype['finally'].call({ then: function () { /* empty */ } }, function () { /* empty */ });
});
// `Promise.prototype.finally` method
// https://tc39.github.io/ecma262/#sec-promise.prototype.finally
$({ target: 'Promise', proto: true, real: true, forced: NON_GENERIC }, {
'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
);
}
});
// patch native Promise.prototype for native async functions
if (!IS_PURE && typeof NativePromise == 'function' && !NativePromise.prototype['finally']) {
redefine(NativePromise.prototype, 'finally', getBuiltIn('Promise').prototype['finally']);
}
Version data entries
13 entries across 13 versions & 4 rubygems