1/* 2 * Copyright (c) 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() : void 17{ 18 assertEQ(foo("1"), 3); 19} 20 21class A{} 22class B{} 23 24function foo(x: string, y?: A) { 25 return 1 26} 27function foo(x: string, y?: B) { 28 return 2 29} 30function foo(x: string) { 31 return 3 32} 33 34 35 36