test262/implementation-contributed/v8/mjsunit/es6/promise-thenable-proxy.js
test262-automation 7298a38552 [v8-test262-automation] Updated curation log with latest revision sha's from export and changed files.
sourceRevisionAtLastExport: 33f2fb0e53d135f0ee17cfccd9d993eb2a6f47de targetRevisionAtLastExport: 31340cbd9add103f586d501b0c3354b7b182abc0
2018-09-14 12:32:18 -04:00

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JavaScript

// Copyright 2015 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
// Flags: --allow-natives-syntax
function assertAsync(b, s) {
if (!b) {
%AbortJS(" FAILED!")
}
}
var handler = {
get: function(target, name) {
if (name === 'then') {
return (val) => Promise.prototype.then.call(target, val);
}
}
};
var target = new Promise(r => r(42));
var p = new Proxy(target, handler);
Promise.resolve(p).then((val) => assertAsync(val === 42));