khaosdoctor

const fs = require('fs')

fs.readFile('./arquivo.txt', (err, dados) => {
  if (err) throw new Error(err)
  fs.writeFile('./outroarquivo.txt', dados, (err) => {
    if (err) throw new Error(err)
    outraFuncaoAssincrona((err, dados) => {
      const x = dados.split(',')
      const y = x.map((e) => e.toUpperCase())
      maisUmaFuncaoAssincrona(y, (err, resultado) => {

khaosdoctor

function readFile (path, callback) {
  if (!path) throw new Error('Path is required')
  
  // Leitura do arquivo de forma assíncrona
  // Criando err como variável de erros e data como variável com o conteúdo
  
  callback(err, dados)
}

khaosdoctor

const fs = require('fs')

fs.readFile('./arquivo.txt', (err, texto) => {
  // fazer alguma coisa com o arquivo
})

khaosdoctor

const fs = require('fs')

const texto = fs.readFileSync('./arquivo.txt')

khaosdoctor

#!/bin/bash

rm -rf /swapfile
sudo fallocate -l 4G /swapfile

ls -lh /swapfile
sudo chmod 600 /swapfile

sudo mkswap /swapfile
sudo swapon /swapfile

khaosdoctor

export function factory (service: ShipService, portService: PortService) {
  return [
    /**
     * Route handler
     * =============
     */
    rescue(async (req, res) => {
      const ship = await service.delete(req.params.shipId, req.onBehalfOf)
      await portService.undockShip(ship, 'Ship was deleted', req.onBehalfOf)

khaosdoctor

Array.from($('#react-root > section > main > div > header + div + div + div > article > div > div').children).forEach(row => {
	Array.from(row.children).forEach(async (image) => {
        try {
		const photoUrl = image.querySelector('a').getAttribute('href')
		const response = await fetch(`https://instagram.com${photoUrl}`)
		const responseText = await response.text()
		const parser = new DOMParser()
		const htmlDocument = parser.parseFromString(responseText, 'text/html')
		const sharedData = JSON.parse(htmlDocument.querySelector('#react-root+script').innerText.replace('window._sharedData = ', '').replace('};', '}'))
		const picData = sharedData.entry_data.PostPage[0] ? sharedData.entry_data.PostPage[0].graphql.shortcode_media : sharedData.entry_data

khaosdoctor

console.log = (...items) => {
  let output = ''
  for (const item of items) {
    output += console.inspect[typeof item](item)
    if (item[Symbol.for('object.upper')]) output.toUpperCase()
    output += ', '
  }
  process.stdout.write(output + '\n')
}
      

khaosdoctor

let obj = { nome: 'Lucas' }
obj[Symbol.for('object.upper')] = true

console.log(obj) // { NOME: 'LUCAS' }
console.log(Object.keys(obj)) // ['NOME']

khaosdoctor

let foo = {
  [Symbol()]: 'foo',
  [Symbol('foo')]: 'bar',
  [Symbol.for('bar')]: 'baz',
  propriedade: 'legal'
}

console.log(Object.getOwnPropertySymbols(foo)) // [ Symbol(), Symbol(foo), Symbol(bar) ]

for (let symbol of Object.getOwnPropertySymbols(foo)) {