1/* 2 * Copyright (c) 2021-2024 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 16/*--- 17desc: 03.08.04 never Type 18name: 03.types/08.reference_types/04.never_type/useWithLambdaAndUnion 19tags: [] 20---*/ 21 22const run: (value: int) => int | never = (value: int): int | never => { 23 switch (value) { 24 case 1: 25 return 1; 26 case 0: 27 return 0; 28 default: 29 throw new Error("error"); 30 } 31} 32 33function main(): void { 34 let ret = run(0) 35 assert(ret == 0) 36} 37