You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
44 lines
1.9 KiB
44 lines
1.9 KiB
11 months ago
|
'use strict';
|
||
|
|
var $ = require('../internals/export');
|
||
|
|
var IS_PURE = require('../internals/is-pure');
|
||
|
|
var NativePromiseConstructor = require('../internals/promise-native-constructor');
|
||
|
|
var fails = require('../internals/fails');
|
||
|
|
var getBuiltIn = require('../internals/get-built-in');
|
||
|
|
var isCallable = require('../internals/is-callable');
|
||
|
|
var speciesConstructor = require('../internals/species-constructor');
|
||
|
|
var promiseResolve = require('../internals/promise-resolve');
|
||
|
|
var defineBuiltIn = require('../internals/define-built-in');
|
||
|
|
|
||
|
|
var NativePromisePrototype = NativePromiseConstructor && NativePromiseConstructor.prototype;
|
||
|
|
|
||
|
|
// Safari bug https://bugs.webkit.org/show_bug.cgi?id=200829
|
||
|
|
var NON_GENERIC = !!NativePromiseConstructor && fails(function () {
|
||
|
|
// eslint-disable-next-line unicorn/no-thenable -- required for testing
|
||
|
|
NativePromisePrototype['finally'].call({ then: function () { /* empty */ } }, function () { /* empty */ });
|
||
|
|
});
|
||
|
|
|
||
|
|
// `Promise.prototype.finally` method
|
||
|
|
// https://tc39.es/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 = isCallable(onFinally);
|
||
|
|
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
|
||
|
|
);
|
||
|
|
}
|
||
|
|
});
|
||
|
|
|
||
|
|
// makes sure that native promise-based APIs `Promise#finally` properly works with patched `Promise#then`
|
||
|
|
if (!IS_PURE && isCallable(NativePromiseConstructor)) {
|
||
|
|
var method = getBuiltIn('Promise').prototype['finally'];
|
||
|
|
if (NativePromisePrototype['finally'] !== method) {
|
||
|
|
defineBuiltIn(NativePromisePrototype, 'finally', method, { unsafe: true });
|
||
|
|
}
|
||
|
|
}
|