Vectormike

// listen to the parent process
process.on('message', (message) => {
  // send the message to the function
  const response = calculatePrime(message.primeNumber);
  // send the response from the function back to the parent process.
  process.send(response);
  // exit/shutdown the process immediately
  process.exit();
});

Vectormike

const childProcess = fork('./calculatePrime.mjs');
childProcess.send({ primeNumber: parseInt(req.query.number) });
childProcess.on('message', (message) => res.json(message));

Vectormike

import { fork } from 'child_process';

// the file we want to execute
const childProcess = fork('./calculatePrime.mjs')

Vectormike

import express from 'express';
const app = express();

app.get('/calculateprime', (req, res) => {
  const response = isPrime(parseInt(req.query.number));
  return res.json(response);
});

app.listen(5000, () => console.log('Listening on 8081'));

Vectormike

{
  "name": "prime-block",
  "version": "1.0.0",
  "description": "",
  "main": "index.js",
  "scripts": {
    "test": "echo \"Error: no test specified\" && exit 1"
  },
  "keywords": [],
  "author": "",

Vectormike

$ npm init -y

Vectormike

class Blockchain {
  constructor() {
    this.chain = [this.createGenesisBlock()];
  }
  
  createGenesisBlock() {
    return new Block('17/102021', 'First Block');
  }
  
  appendBlock(newBlock) {

Vectormike

class Block {
  constructor(time, data, previousHash = '') {
    this.time = time;
    this.data = data;
    this.previousHash = previousHash;
    this.hash = this.getHash()
  }
  
  getHash() {
    return crypto.createHash('sha256').update(this.previousHash + this.time + JSON.stringify(this.data)).digest('hex');

Vectormike

remove(index) {
  
  // check if index is out of size range
  if (index < 0 || index >= this.length) {
    return;
  }

  let current = this.head;
  let previous;
  let count = 0;

Vectormike

class LinkedList {
  constructor() {
    this.head = null;
    this.tail = this.head;
    this.length = 0;
  }
  
  append(data) {
    let node = new Node(data);
    if(!this.head) {