1 2/* 3 * Copyright (c) 2023-2025 Huawei Device Co., Ltd. 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17class Bar { 18 cb: (() => int) | undefined = () => { return 3 }; 19} 20 21function foo(a: Int | null): (() => Int) | undefined { 22 let cb: () => Int = () => { return a!; }; 23 return a != null ? cb : undefined; 24} 25 26function main(): void { 27 let a = new Int(3); 28 // assertEQ(foo(a)?.(), 3 // bug) 29 assertEQ(foo(a)?.(), a) 30 31 assertTrue(foo(null)?.() == null) 32 assertTrue(null == foo(null)?.()) 33 34 assertEQ(foo(null)?.(), undefined) 35 assertEQ(undefined, foo(null)?.()) 36 37 assertNE(new Int(3), foo(null)?.()) 38 39 let b = new Bar(); 40 assertEQ(b.cb?.(), 3) 41 b.cb = undefined; 42 assertEQ(b.cb?.(), undefined) 43} 44