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