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/*
MIT License http://www.opensource.org/licenses/mit-license.php
Author Alexander Akait @alexander-akait
*/
"use strict";
const createHash = require("./createHash");
/**
* @param {string | Buffer} content content
* @param {string} file file
* @returns {string} generated debug id
*/
module.exports = (content, file) => {
// We need a uuid which is 128 bits so we need 2x 64 bit hashes.
// The first 64 bits is a hash of the source.
const sourceHash = createHash("xxhash64").update(content).digest("hex");
// The next 64 bits is a hash of the filename and sourceHash
const hash128 = `${sourceHash}${createHash("xxhash64")
.update(file)
.update(sourceHash)
.digest("hex")}`;
return [
hash128.slice(0, 8),
hash128.slice(8, 12),
`4${hash128.slice(12, 15)}`,
((Number.parseInt(hash128.slice(15, 16), 16) & 3) | 8).toString(16) +
hash128.slice(17, 20),
hash128.slice(20, 32)
].join("-");
};