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
16
17export default function add(a: number, b: number): number {
18  return a + b;
19}
20
21function subtract(a: number, b: number): number {
22  return a - b;
23}
24
25export function multiply(a: number, b: number): number {
26  return a * b;
27}
28
29export { multiply as times };
30
31export const PI: number = 3.14;
32
33export class Student {
34  name: string;
35  age: number;
36  constructor(name: string, age: number) {
37    this.name = name;
38    this.age = age;
39  };
40}
41
42interface Lesson {
43  id: number,
44  date: string
45}
46
47type customType = string;
48
49export { subtract, customType, Lesson };