uuid.ts
816 Bytes
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
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
const hexList: string[] = [];
for (let i = 0; i <= 15; i++) {
hexList[i] = i.toString(16);
}
export function buildUUID(): string {
let uuid = '';
for (let i = 1; i <= 36; i++) {
switch (i) {
case 9:
case 14:
case 19:
case 24: {
uuid += '-';
break;
}
case 15: {
uuid += 4;
break;
}
case 20: {
uuid += hexList[(Math.random() * 4) | 8];
break;
}
default: {
uuid += hexList[Math.trunc(Math.random() * 16)];
}
}
}
return uuid.replaceAll('-', '');
}
let unique = 0;
export function buildShortUUID(prefix = ''): string {
const time = Date.now();
const random = Math.floor(Math.random() * 1_000_000_000);
unique++;
return `${prefix}_${random}${unique}${String(time)}`;
}