alekseykulikov

Recently CSS has got a lot of negativity. But I would like to defend it and show, that with good naming convention CSS works pretty well.

My 3 developers team has just developed React.js application with 7668 lines of CSS (and just 2 !important). During one year of development we had 0 issues with CSS. No refactoring typos, no style leaks, no performance problems, possibly, it is the most stable part of our application.

Here are main principles we use to write CSS for modern (IE11+) browsers:

• SUIT CSS naming conventions + SUIT CSS design principles;
• PostCSS + CSSNext. Future CSS syntax like variables, nesting, and autoprefixer are good enough;
• Flexbox is awesome. No need for grid framework;
• Normalize.css, base styles and variables are solid foundation for all components;

gaearon

// connect() is a function that injects Redux-related props into your component.
// You can inject data and callbacks that change that data by dispatching actions.
function connect(mapStateToProps, mapDispatchToProps) {
  // It lets us inject component as the last step so people can use it as a decorator.
  // Generally you don't need to worry about it.
  return function (WrappedComponent) {
    // It returns a component
    return class extends React.Component {
      render() {
        return (

gaearon

function mapValues(obj, fn) {
  return Object.keys(obj).reduce((result, key) => {
    result[key] = fn(obj[key], key);
    return result;
  }, {});
}

function pick(obj, fn) {
  return Object.keys(obj).reduce((result, key) => {
    if (fn(obj[key])) {

chenglou

Interesting part (unmounting & API) is at the end if you're not interested in the rest =).

Stress Tests

This animation proposal is just an attempt. In case it doesn't work out, I've gathered a few examples that can test the power of a future animation system.

1. Parent is an infinitely spinning ball, and has a child ball that is also spinning. Clicking on the parent causes child to reverse spinning direction. This tests the ability of the animation system to compose animation, not in the sense of applying multiple interpolations to one or more variables passed onto the child (this should be trivial), but in the sense that the parent's constantly updating at the same time as the child, and has to ensure that it passes the animation commands correctly to it. This also tests that we can still intercept these animations (the clicking) and immediately change their configuration instead of queueing them.

2. Typing letters and let them fly in concurrently. This tests concurrency, coordination of an array of ch

SaraVieira

In this talk we will be all discussing the origin of the furry fandom. How we will thogheter create a new furry-in-js framework. We will going over how they have changed the current fandom world, our hearts and the js world in 5 very awesome minutes! This talk is to prove a point that stars mean nothing in this case.

https://reactiveconf.com/

insin

{
  "browser": true,
  "node": true,

  "curly": true,
  "devel": true,
  "globals": {
    "ActiveXObject": true,
    "async": true,
    "moment": true,

alexeisavca

var React = require('react/addons');
var ReactIgnore = {
    displayName: 'ReactIgnore',
    shouldComponentUpdate (){
        return false;
    },

    render (){
        return React.Children.only(this.props.children);
    }

threepointone

// store.js
let {store, handler} = sto(initialState, reduceFn);   // where reduceFn: function(currentState, action, ...args){}

dispatcher.register(handler);
export store;

// elsewhere
store.get()  // -> current state

store.toObservable() // -> to be used with .observe()

sebmarkbage

React (Virtual) DOM Terminology

In React's terminology, there are five core types that are important to distinguish:

• ReactElement / ReactElement Factory
• ReactNode
• ReactComponent / ReactComponent Class

React Elements

thevangelist

import React from 'react';
import { shallow } from 'enzyme';
import MyComponent from '../src/my-component';

const wrapper = shallow(<MyComponent/>);

describe('(Component) MyComponent', () => {
  it('renders without exploding', () => {
    expect(wrapper).to.have.length(1);
  });