1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
// Faux database
export interface Pet {  name?: string;  id?: number;}
export interface User {  name?: string;  pets?: Pet[];  id?: number;}
export const pets: Pet[] = [  { name: "Smudge", id: 0 },  { name: "Tilly", id: 1 },  { name: "Georgie", id: 2 },];
export const users: User[] = [  { name: "C", pets: [], id: 0 },  { name: "H", pets: [pets[0]], id: 1 },  { name: "S", pets: [pets[1], pets[2]], id: 2 },];