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var express = require('express');
var graphqlHTTP = require('express-graphql');
var { buildSchema } = require('graphql');

// Construct a schema, using GraphQL schema language
var schema = buildSchema(`
  type Query {
    rollDice(numDice: Int!, numSides: Int): [Int]
  }
`);

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//package.json
{
    "name": "flame-graph-exercise",
    "version": "1.0.0",
    "private": true,
    "scripts": {
        "start": "node --perf-basic-prof-only-functions app.js"
    },
    "author": "Shubham Verma",\
    "dependencies": {

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//app.js
const express = require('express');
const console = require('console');
const levenshtein = require('fast-levenshtein');
var arr=[];
const HOW_OBVIOUS_THE_FLAME_GRAPH_SHOULD_BE_ON_SCALE_1_TO_100 = 10;

const someFakeModule = (function someFakeModule () {
return {
  calculateStringDistance (a, b) {

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//makeIndex.js 
const _ = require('highland');
const fs = require('fs');
const csv = require('csv-parser');
const elasticsearch = require('elasticsearch');
const indexName = 'demo_elastic_index';

const start = async () => {
  const client = new elasticsearch.Client({
     host: 'localhost:9200',

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//searchData.js
const elasticsearch = require('elasticsearch');
const indexName = 'demo_elastic_index';
const query = 'Lewisham';
const searchData = async () => {
  const client = new elasticsearch.Client({
  host: 'localhost:9200',
  // log: 'trace',
  });
await client.ping({

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//deleteIndex.js
const elasticsearch = require('elasticsearch');
const indexName='demo_elastic_index';
const deleteIndex = async () => {
  const client = new elasticsearch.Client({
  host: 'localhost:9200',
  // log: 'trace',
  });
await client.ping({
  requestTimeout: 3000

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{
  "query": {                                  //1
    "bool": {                                 //2
      "must": [
       { "match":{"address":"Street"}}        //3
      ],
      "filter": [                             //4
        { "term":{"gender":"f"}},             //5
        { "range": { "age": { "gte": 25 }}}   //6
      ]

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//package.json:
{
 "name": "blockchain",
 "version": "1.0.0",
 "description": "",
 "main": "main.js",
 "scripts": {
   "test": "echo \"Error: no test specified\" && exit 1"
 },
 "author": "Shubham Verma",

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//main.js
const crypto = require('crypto');
class Block {
   constructor(index, data, prevHash) {
       this.index = index;
       this.timestamp = Math.floor(Date.now() / 1000);
       this.data = data;
       this.prevHash = prevHash;
       this.hash=this.getHash();
   }

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//sample.json
[{
"firstName":"Shubham",
"lastName":"Verma",
"email":"example@gmail.com",
"Mob:":1234567890,
"country":"India"
},
{
"firstName":"Shubham",