// Copyright (C) 2015 the V8 project authors. All rights reserved. // This code is governed by the BSD license found in the LICENSE file. /*--- es6id: 9.5.3 description: > The trap returns a boolean result. features: [Proxy] ---*/ var target = {}; var p = new Proxy(target, { isExtensible: function(t) { if (Object.isExtensible(t)) { return 1; } else { return 0; } } }); assert.sameValue(Object.isExtensible(p), true); Object.preventExtensions(target); assert.sameValue(Object.isExtensible(p), false); reportCompare(0, 0);