maciejsikora

const renderPage = (req, res, store) => {

  const reactPart = renderToString(
    <Provider store={store}>
      <StaticRouter
      location={req.url}
      context={{}}>
        <App/>
      </StaticRouter>
    </Provider>

maciejsikora

const initState = window.__STATE__;
delete window.__STATE__; // not needed anymore

// Create Redux store with initial state
const store = createStore(reducer.main, initState);
// start the app
window.initApp = (url) => {
  window.onload = () => {
    ReactDOM.render(
      <Provider store={store}>

maciejsikora

function hasProp (obj, prop) {
  return obj.hasOwnProperty(prop)
}

function hasProps (obj, props) {
  return props.filter(prop => hasProp(obj, prop)).length === props.length
}

function isString (value) {
  return typeof value === 'string'

maciejsikora

const assert = require('assert')
const rewire = require('rewire')

// standard using of exported functions
const { createUser } = require('./user')

// using rewire to get into private resources
const userRewire = rewire('./user')
const hasProp = userRewire.__get__('hasProp')
const hasProps = userRewire.__get__('hasProps')

maciejsikora

// object
const claraFrog = { color: 'green', name: 'Clara' };
const juliaFrog = { ...claraFrog, name: 'Julia' };
// array
const week = ['monday','tuesday','wednesday','thursday','friday','saturday', 'sunday'];
const betterWeek = [...week];
betterWeek.shift(); // week without monday :)

maciejsikora

class Just<Data> {
  value: Data;
  constructor(value: Data) {
    this.value = value;
  }
  fmap<NextData>(f: (x: Data) => NextData) {
    return new Just<NextData>(f(this.value))
  }
}
class Nothing {

maciejsikora

class Just<Data> {
  value: Data;
  constructor(value: Data) {
    this.value = value
  }
  fmap<NextData>(f: (x: Data) => NextData) {
    return new Just<NextData>(f(this.value))
  }
  private flat() {
    return this.value