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const count = 10e6
const length = 100

console.time('generate')
const chars = Array(52).fill().map((_, i) => String.fromCharCode(i < 26 ? i + 65 : i + 71))
const char = () => chars[Math.random() * chars.length | 0]
const triplets = chars.flatMap(a => chars.flatMap(b => chars.flatMap(c => [a, b, c].join(''))))
const triplet = () => triplets[Math.random() * triplets.length | 0]
const main = Array(Math.floor(length / 3)).fill(0)
const tail = Array(length - main.length * 3).fill(0)

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[
  [
    ["esc",  "1",  "2",  "3",  "/", "\\", "fn","del"],
    [  "⇥",  "4",  "5",  "6",  "[",  "]",  "'",  "⇦"],
    [  "`",  "7",  "8",  "9",  "0",  "-",  "=",  ";"],
    [  "q",  "j",  "l",  "m",  "f",  "y",  "p",  "↩"],
    [  "z",  ".",  "o",  "r",  "s",  "u",  "c",  "b"],
    [  "x",  "a",  "e",  "h",  "t",  "d",  "g",  "k"],
    [  "↥",  ",",  "i",  "n",  "w",  "v",  "↑",  "↥"],
    ["ctr","sup","alt",  " ",  " ",  "←",  "↓",  "→"]

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const send = (file) => {
  const xhr = new XMLHttpRequest();
  const formData = new FormData();

  formData.append("avatar", file);
  xhr.open("POST", "/", true);

  xhr.upload.onprogress = function(event) {
    if (event.lengthComputable) {
      const percent = (event.loaded / event.total) * 100;

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private emailValidators = [
         Validators.maxLength(250),
         Validators.minLength(5),
         Validators.pattern(/.+@.+\..+/)
  ];

ngOnInit() {
  this.myForm = this.fb.group({
    myCheckbox: [''],
    myEmailField: ['', this.emailValidators]

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this.myForm.get('myCheckbox').valueChanges.subscribe((value) => {
  if (value) {
    this.myForm.get('myEmailField').setValidators(Validators.required);
  } else {
    this.myForm.get('myEmailField').clearValidators();
  }
});

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<h2>My form</h2>

<form [formGroup]="myForm" (ngSubmit)="onSubmit()">
  <div>
    Make email mandatory <input formControlName="myCheckbox"
                                type="checkbox">
  </div>
  <div>
    Email: <input formControlName="myEmailField"
                  type="email">

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  ngOnInit() {
    this.myForm = this.fb.group({
      myCheckbox: [''],
      myEmailField: [
        '',
        [
          Validators.maxLength(250),
          Validators.minLength(5),
          Validators.pattern(/.+@.+\..+/),
        ],

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const puppeteer = require('puppeteer')

let anime = {}

async function run (searched) {
  searched = searched.replace(';', ' ')
  // Setup pupeteer
  const browser = await puppeteer.launch({
    headless: false,
  })

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JavaScript Best Practices

Code conventions

Closing/opening brackets

Although this isn't a problem in other languages, because of semicolon insertion, there could be problems if you don't place the bracket on the opening line:

// no:
function()
{

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'use strict';

var path = require('path');
var webpack = require('webpack');
var HtmlWebpackPlugin = require('html-webpack-plugin');
var ExtractTextPlugin = require('extract-text-webpack-plugin');
var WriteFilePlugin = require('write-file-webpack-plugin');
var BrowserSyncPlugin = require('browser-sync-webpack-plugin');

const devServer = {