# Copyright 2018 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.*%(basename)s:5: TypeError: 'set' on proxy: trap returned truish for property 'bla' which exists in the proxy target as a non-configurable and non-writable data property with a different valuefunction set_value(obj, prop) { return obj[prop] = undefined } ^TypeError: 'set' on proxy: trap returned truish for property 'bla' which exists in the proxy target as a non-configurable and non-writable data property with a different value at set_value (*%(basename)s:5:50) at *%(basename)s:18:1