37 lines
997 B
JavaScript
37 lines
997 B
JavaScript
'use strict';
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var randomUUID = require('./randomUUID');
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const decimalToHex = Array.from({ length: 256 }, (_, i) => i.toString(16).padStart(2, "0"));
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const v4 = () => {
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if (randomUUID.randomUUID) {
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return randomUUID.randomUUID();
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}
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const rnds = new Uint8Array(16);
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crypto.getRandomValues(rnds);
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rnds[6] = (rnds[6] & 0x0f) | 0x40;
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rnds[8] = (rnds[8] & 0x3f) | 0x80;
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return (decimalToHex[rnds[0]] +
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decimalToHex[rnds[1]] +
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decimalToHex[rnds[2]] +
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decimalToHex[rnds[3]] +
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"-" +
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decimalToHex[rnds[4]] +
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decimalToHex[rnds[5]] +
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"-" +
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decimalToHex[rnds[6]] +
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decimalToHex[rnds[7]] +
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"-" +
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decimalToHex[rnds[8]] +
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decimalToHex[rnds[9]] +
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"-" +
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decimalToHex[rnds[10]] +
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decimalToHex[rnds[11]] +
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decimalToHex[rnds[12]] +
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decimalToHex[rnds[13]] +
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decimalToHex[rnds[14]] +
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decimalToHex[rnds[15]]);
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};
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exports.v4 = v4;
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