1/*
2 * Copyright (c) 2023 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
16declare function print(arg:any):string;
17function Dog(name) {
18  this.name = name;
19}
20
21const dog1 = new Dog('Gabby');
22
23Dog.prototype.toString = function dogToString() {
24  return `${this.name}`;
25};
26
27print(dog1.toString());
28print(Object.prototype.toString.call(dog1));
29
30let o = new Object();
31print(o.toString())
32
33let n = new Number(1);
34print(Object.prototype.toString.call(n));
35
36let s = "ss";
37print(Object.prototype.toString.call(s));
38print(s.toString());
39
40print(Object.prototype.toString.call(new Date()));
41print(Object.prototype.toString.call(new String()));
42// Math has its Symbol.toStringTag
43print(Object.prototype.toString.call(Math));
44
45
46print(Object.prototype.toString.call(null));
47print(Object.prototype.toString.call());
48
49const myDate = new Date();
50print(Object.prototype.toString.call(myDate));
51
52myDate[Symbol.toStringTag] = "myDate";
53print(Object.prototype.toString.call(myDate));
54
55Date.prototype[Symbol.toStringTag] = "prototype polluted";
56print(Object.prototype.toString.call(new Date()));
57