Method constructor

example/app.jsx:9–18

()

class App extends React.Component {
  constructor() {
    super();
    this.state = {
      canRefreshResolve: 1,
      listLen: 0,
      hasMore: 0,
      initializing: 1,
      refreshedAt: Date.now(),
    };
  }

  componentDidMount() {
    setTimeout(() => {