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- function uuid(len, radix) {
- var chars = '0123456789abcdef'.split('');
- var uuid = [],
- i;
- radix = radix || chars.length;
- if (len) {
- // Compact form
- for (i = 0; i < len; i++) uuid[i] = chars[0 | Math.random() * radix];
- } else {
- // rfc4122, version 4 form
- var r;
- // rfc4122 requires these characters
- uuid[8] = uuid[13] = uuid[18] = uuid[23] = '-';
- uuid[14] = '4';
- // Fill in random data. At i==19 set the high bits of clock sequence as
- // per rfc4122, sec. 4.1.5
- for (i = 0; i < 36; i++) {
- if (!uuid[i]) {
- r = 0 | Math.random() * 16;
- uuid[i] = chars[(i == 19) ? (r & 0x3) | 0x8 : r];
- }
- }
- }
- return uuid.join('');
- }
- export default uuid
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