1/* 2 * Copyright (c) 2023-2024 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 16class A {} 17class B extends A {} 18 19class A1<in T> {} 20class A2<out T> {} 21 22function main(): void { 23 let x1: A1<A> = new A1<B>() 24} 25/* @@? 23:21 Error TypeError: Type 'A1<B>' cannot be assigned to type 'A1<A>' */ 26