nwrox

const getLog2 = (n) => Math.round(Math.log2(n))

const reverseSeq = (n) => Array.from(Array(n + 1).keys()).reverse()

const getPow = (b, n) => Math.pow(b, n)

const decToBin = (n) => {
	reverseSeq(getLog2(n)).reduce(
		(acc, curr) => (getPow(2, curr) <= n) ? ( n -= getPow(2, curr), acc + '1' ) : acc + '0', ''
	)

nwrox

const createScript = (path, version) => {
  const scriptTag = document.createElement('script')

  scriptTag.src = path + '?v=' + version
  scriptTag.type = 'text/javascript'

  document.head.appendChild(scriptTag)
}

const createStyle = (path, version) => {

nwrox

const assert = require('assert')
    , crypto = require('crypto')

class HKDFBufferGenerator {
  constructor(alg, ikm, info, salt, size) {
    this._alg = alg
    this._ikm = ikm
    this._info = info
    this._salt = salt
    this._size = size

nwrox

// entrada
[
  {
    "nome_ponto": "ponto A",
    "nome_parametro": "parametro X"
  },
  {
    "nome_ponto": "ponto B",
    "nome_parametro": "parametro Y"
  },

nwrox

const asn1 = require('asn1.js')
    , BN = require('bn.js')
    , crypto = require('crypto')

const privKey = '{' +
  '"version": "0",' +
  '"modulus": "259154769957187194386805172792520197599479908823949686364408864499' +
'94962945058195024520647063684248740786360017811823364689336100960942063494732020' +
'91812725346950176505638890859938367164068105119839615900697880416966060139081266' +
'35977887948210779573734140292700996701877639405960971827664641117294919785640103' +

nwrox

// capKey vem de uma iteração em um objeto
$('#div' + capKey).find('input')
  .keydown(e => {
    const key = e.key
        , arrKeys = [
            'ArrowDown', 'ArrowLeft', 'ArrowRight', 'ArrowUp','Backspace',
            'Control', 'Delete', 'End', 'Home', 'Tab'
          ]
         , input = $(e.currentTarget)

nwrox

/* Smartphones (portrait and landscape) ----------- */

@media only screen and (min-device-width: 320px) and (max-device-width: 480px) {
    /* Styles */
}
/* Smartphones (landscape) ----------- */

@media only screen and (min-width: 321px) {
    /* Styles */
}

nwrox

const arrStr = 'a.b.c.d'.split('.')

const res = arrStr.reduce((acc, curr, i, j) => {
  acc.push({ [`${curr}`]: {} })

  return acc
}, []).reduce((acc, curr, i, arr) => {
  acc = arr[0]

  if(i < arr.length) {

nwrox

const arr = [{ price: 10, qtd: 2}, { price: 20, qtd: 1}]
    , res = arr.reduce((acc, curr) => { acc.price = (acc.price || 0) + curr.price * curr.qtd; acc.qtd = (acc.qtd || 0) + curr.qtd; return acc }, {})
    
console.log(res)

nwrox

const groupBy = (xs, key) => xs.reduce((rv, x) => {
  (rv[x[key]] = rv[x[key]] || []).push(x);
  return rv;
}, {});