32 lines
No EOL
817 B
JavaScript
32 lines
No EOL
817 B
JavaScript
import { unsafeStringify } from './stringify.js';
|
|
import v1 from './v1.js';
|
|
import v1ToV6 from './v1ToV6.js';
|
|
|
|
/**
|
|
*
|
|
* @param {object} options
|
|
* @param {Uint8Array=} buf
|
|
* @param {number=} offset
|
|
* @returns
|
|
*/
|
|
export default function v6(options = {}, buf, offset = 0) {
|
|
// v6 is v1 with different field layout, so we start with a v1 UUID, albeit
|
|
// with slightly different behavior around how the clock_seq and node fields
|
|
// are randomized, which is why we call v1 with _v6: true.
|
|
let bytes = v1({
|
|
...options,
|
|
_v6: true
|
|
}, new Uint8Array(16));
|
|
|
|
// Reorder the fields to v6 layout.
|
|
bytes = v1ToV6(bytes);
|
|
|
|
// Return as a byte array if requested
|
|
if (buf) {
|
|
for (let i = 0; i < 16; i++) {
|
|
buf[offset + i] = bytes[i];
|
|
}
|
|
return buf;
|
|
}
|
|
return unsafeStringify(bytes);
|
|
} |