/*
 * Copyright (c) 2024 Huawei Device Co., Ltd.
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */


export default function add(a: number, b: number): number {
  return a + b;
}

function subtract(a: number, b: number): number {
  return a - b;
}

export function multiply(a: number, b: number): number {
  return a * b;
}

export { multiply as times };

export const PI: number = 3.14;

export class Student {
  name: string;
  age: number;
  constructor(name: string, age: number) {
    this.name = name;
    this.age = age;
  };
}

interface Lesson {
  id: number,
  date: string
}

type customType = string;

export { subtract, customType, Lesson };