everyutil/array/arrayFingerprint.js

A comprehensive library of lightweight, reusable utility functions for JavaScript and TypeScript, designed to streamline common programming tasks such as string manipulation, array processing, date handling, and more.

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.arrayFingerprint = void 0;
/**
 * Hash-style signature of an array for quick diffing.
 * @author @dailker
 * @param {any[]} array
 * @returns {string}
 */
function arrayFingerprint(array) {
    // Simple hash: djb2
    let hash = 5381;
    const str = JSON.stringify(array);
    for (let i = 0; i < str.length; i++) {
        hash = ((hash << 5) + hash) + str.charCodeAt(i);
        hash = hash & hash;
    }
    return hash.toString(16);
}
exports.arrayFingerprint = arrayFingerprint;