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1import validate from './validate.js';
2
3function parse(uuid) {
4 if (!validate(uuid)) {
5 throw TypeError('Invalid UUID');
6 }
7
8 let v;
9 const arr = new Uint8Array(16); // Parse ########-....-....-....-............
10
11 arr[0] = (v = parseInt(uuid.slice(0, 8), 16)) >>> 24;
12 arr[1] = v >>> 16 & 0xff;
13 arr[2] = v >>> 8 & 0xff;
14 arr[3] = v & 0xff; // Parse ........-####-....-....-............
15
16 arr[4] = (v = parseInt(uuid.slice(9, 13), 16)) >>> 8;
17 arr[5] = v & 0xff; // Parse ........-....-####-....-............
18
19 arr[6] = (v = parseInt(uuid.slice(14, 18), 16)) >>> 8;
20 arr[7] = v & 0xff; // Parse ........-....-....-####-............
21
22 arr[8] = (v = parseInt(uuid.slice(19, 23), 16)) >>> 8;
23 arr[9] = v & 0xff; // Parse ........-....-....-....-############
24 // (Use "/" to avoid 32-bit truncation when bit-shifting high-order bytes)
25
26 arr[10] = (v = parseInt(uuid.slice(24, 36), 16)) / 0x10000000000 & 0xff;
27 arr[11] = v / 0x100000000 & 0xff;
28 arr[12] = v >>> 24 & 0xff;
29 arr[13] = v >>> 16 & 0xff;
30 arr[14] = v >>> 8 & 0xff;
31 arr[15] = v & 0xff;
32 return arr;
33}
34
35export default parse;
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