1/* 2 * Copyright (c) 2024-2025 Huawei Device Co., Ltd. 3 * Licensed under the Apache License, Version 2.0 (the "License"); 4 * you may not use this file except in compliance with the License. 5 * You may obtain a copy of the License at 6 * 7 * http://www.apache.org/licenses/LICENSE-2.0 8 * 9 * Unless required by applicable law or agreed to in writing, software 10 * distributed under the License is distributed on an "AS IS" BASIS, 11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 * See the License for the specific language governing permissions and 13 * limitations under the License. 14 */ 15 16function main() { 17 let x1 = (): int | undefined => { return 5; }(); 18 let y1: int = x1 ?? 3.1; 19 assertEQ(y1, 5) 20 21 let x2 = (): int | undefined => { return undefined; }(); 22 let y2: int = x2 ?? 3.1; 23 assertEQ(y2, 3) 24 25 let x3 = (): number | undefined => { return 5; }(); 26 let y3: number = x3 ?? 3; 27 assertEQ(y3, 5.0) 28 29 let x4 = (): number | undefined => { return undefined; }(); 30 let y4: number = x4 ?? 3; 31 assertEQ(y4, 3.0) 32} 33