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Filename : v4.js

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"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
const native_js_1 = require("./native.js");
const rng_js_1 = require("./rng.js");
const stringify_js_1 = require("./stringify.js");
function v4(options, buf, offset) {
    if (native_js_1.default.randomUUID && !buf && !options) {
        return native_js_1.default.randomUUID();
    }
    options = options || {};
    const rnds = options.random ?? options.rng?.() ?? (0, rng_js_1.default)();
    if (rnds.length < 16) {
        throw new Error('Random bytes length must be >= 16');
    }
    rnds[6] = (rnds[6] & 0x0f) | 0x40;
    rnds[8] = (rnds[8] & 0x3f) | 0x80;
    if (buf) {
        offset = offset || 0;
        if (offset < 0 || offset + 16 > buf.length) {
            throw new RangeError(`UUID byte range ${offset}:${offset + 15} is out of buffer bounds`);
        }
        for (let i = 0; i < 16; ++i) {
            buf[offset + i] = rnds[i];
        }
        return buf;
    }
    return (0, stringify_js_1.unsafeStringify)(rnds);
}
exports.default = v4;