Xavier577

Hash Map implementation in Typescript

function DJB2Hash(key: string) {
  let hash = 5381; // magic start djb2 number

  for (let i = 0; i < key.length; i++) {
    hash = (hash << 5) + hash + key.charCodeAt(i);
    // using (hash << 5 + hash) instead of hash * 33 because '<<' is operation is faster than '*' on computer cpu
    hash = hash & hash;
  }

Xavier577

Code snippet

import { createServer } from "http";
import crypto from "crypto";

const PORT = 8001;

// this is from the web-socket specification and not something that is generated
const WEBSOCKET_MAGIC_STRING_KEY = "258EAFA5-E914-47DA-95CA-C5AB0DC85B11";