/*
 * Copyright (c) 2024 Huawei Device Co., Ltd.
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */


(1 ?? 2) == 1;
(0 ?? 2) == 0;
null ?? 2 == 2;
null ?? undefined == undefined;
null ?? undefined ?? 2 == 2;
null ?? undefined ?? null ?? 10 == 10;
null ?? (undefined || null) ?? 10 == 10;
null ?? (undefined && null) ?? 10 == 10;
(null ?? true) && (true ?? null) == true
5 + 3 ?? 5 * 8;