1/* 2 * Copyright (c) 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 DescribableFunction { 17 description: string 18 public invoke(someArg: number): string { 19 return someArg.toString() 20 } 21 constructor() { 22 this.description = "desc" 23 } 24} 25 26function doSomething(fn: DescribableFunction): void { 27 console.log(fn.description + " returned " + fn.invoke(6)) 28} 29 30doSomething(new DescribableFunction()) 31