rthomazel

const someMachine = Machine({
  id: "actionPlan",
  initial: "view",
  type: "parallel",
  context: {
    goals: [],
    canEditCarePlan: false,
    canEditActionPlan: false,
    draftGoal: {},
  },

rthomazel

Assunto: Palestrante 2020

Raphael "Tom" Thomazella

Florianópolis - Santa Catarina

Fullstack Javascript Engineer - Freelancer

Tema: State Machines (24 👍 nos temas 2020)

rthomazel

foo

rthomazel

SQL injection, injection in general

happens when user provided data is poorly or not validated at all. happens when the client is manipulated to send unexpected params to the backend. backend must avoid at all cost to use data in db requests or other operations if needed, data should be filtered and validated on the server side, better yet parametrized, or at the bare minimum, escaped properly

headers and env vars are possible vectors of attack

rthomazel

/*************************************************************
 * https://twitter.com/marcelcruz/status/1282005231065341953 *
 *************************************************************/

/**
 * original js
 */
const capitalize = ([firstLetter, ...rest]) => {
  return firstLetter.toUpperCase() + rest.join('')
}

rthomazel

const totalYear = /* total de ganhos no ano */;
const SERVICES_TAX_ASSUMPTION = 0.32;
const EXEMPT_AMOUNT = 28.559.70 /* valor para 2020 */;
const nonTaxable = totalYear * SERVICES_TAX_ASSUMPTION;
const taxableByPj = totalYear - nonTaxable;
const shouldSubmitIR = taxableByPj > EXEMPT_AMOUNT;
console.log({ shouldSubmitIR, taxableByPj, nonTaxable, totalYear });
/**
 https://www.msn.com/pt-br/dinheiro/other/mei-precisa-declarar-imposto-de-renda/ar-BB10w1xg

rthomazel

import decache from 'decache'
import { watch, FSWatcher } from 'fs'
import REPL from 'repl'

type ReloadConfig = { newline?: boolean }
type JSObject<Value = any> = Record<string, Value>

const AUTO_RELOAD = true
/**
 * path to the modules you'll be developing and reloading.

rthomazel

real vs dolar 2020
https://twitter.com/thom_is_coding/status/1253373908650205185

rthomazel

/**
 * react-native
 * React.FC
 * loading state used for UI feedback only
 * async handle attached to button with 3 awaits
 * apollo mutation
 * promisified calls
 */
const EmailConfirmation: React.FC<Props> = ({ navigation, dispatch, ...props }) => {
  const [loading, setLoading] = useState(false)

rthomazel

/**
 * react-native project
 */
 
class HeartButton extends Component<Props, State> {
  handlePress = async e => {
    const { data } = await apolloMutation1({
      variables
    })
    navigation.navigate('ChatScreen', { conversationId: data.conversation.id })