josephsavona

### Keybase proof

I hereby claim:

  * I am josephsavona on github.
  * I am joesavona (https://keybase.io/joesavona) on keybase.
  * I have a public key whose fingerprint is 71DA 232F A47B 8A97 6EF6  141D 9A6D 5124 7BE8 A8B3

To claim this, I am signing this object:

josephsavona

class MyComponent extends React.Component {
  render() {
    return (
      <div className="user-profile">
        <img src={this.props.user.thumbnail} />
        <h1>{this.props.user.name}</h1>
      </div>
    );
  }
}

josephsavona

class DelayedQueryRenderer extends Component {
  constructor(props, context) {
    super(props, context);
    this.state = {query: null}; // don't fetch anything initially
  }
  componentDidMount() {
    this.setState({query: this.props.query}); // fetch after mount
  }
  componentWillReceiveProps(nextProps) {
    this.setState({query: nextProps.query});

josephsavona

// Somewhere, the Redux store needs to be wrapped in a mutable source object...
const mutableSource = createMutableSource(
  relayEnvironment,
  // Because the state is immutable, it can be used as the "version".
  () => relayEnvironment.getVersion()
);

// It would probably be shared via the Context API...
const MutableSourceContext = createContext(mutableSource);

josephsavona

 PASS  packages/react-dom/src/__tests__/ReactDOMServerIntegrationElements-test.js (18.995 s)
  ● Console

    console.group
        ⚛️ commit (0b0000000000000000000000000000001)

      at console.log (packages/react-reconciler/src/DebugTracing.js:51:27)

    console.group
          ⚛️ commit (0b0000000000000000000000000000001)

josephsavona

import { useState } from "react";

export default function CounterWithMutationTracking() {
  const [state, setState] = useState(0);

  let x = [];
  let y = x;
  y.push(state);

  return (