hashicorp-copywrite[bot]andCameron Perera
3d610427d0
* [COMPLIANCE] Add Copyright and License Headers * chore: 🤖 update Copyright headers to satisfy our lint rules --------- Co-authored-by: hashicorp-copywrite[bot] <110428419+hashicorp-copywrite[bot]@users.noreply.github.com> Co-authored-by: Cameron Perera <cameron.perera@hashicorp.com>
47 lines
1.1 KiB
JavaScript
47 lines
1.1 KiB
JavaScript
/**
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* Copyright (c) HashiCorp, Inc.
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* SPDX-License-Identifier: MPL-2.0
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*/
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const characters = 'abcdefghijklmnopqrstuvwxyz0123456789';
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/**
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* The Mulberry32 PRNG, JavaScript implementation. This is a seedable PRNG,
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* which we need in order to deterministically generate IDs which are stable
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* across reloads. Unfortunately, the built-in `Math.random` function
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* is not seedable.
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*
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* Source:
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* https://github.com/bryc/code/blob/master/jshash/PRNGs.md#mulberry32
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*
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* @param {number} a
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* @return {number}
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*/
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function mulberry32(a = 0) {
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return function () {
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a += 0x6d2b79f5 | 0;
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var t = Math.imul(a ^ (a >>> 15), 1 | a);
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t = (t + Math.imul(t ^ (t >>> 7), 61 | t)) ^ t;
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return ((t ^ (t >>> 14)) >>> 0) / 4294967296;
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};
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}
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const random = mulberry32();
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/**
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* Generates a random ID string at least 10 characters long with the
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* specified prefix.
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*
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* @param {string} prefix
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* @return {string}
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*/
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export default function (prefix = '') {
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let result = '';
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for (let i = 0; i < 10; i++) {
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result = result.concat(
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characters[Math.floor(random() * characters.length)]
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);
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}
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return prefix.concat(result);
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}
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