content: import React from 'react';
  import { Provider, connect } from 'react-redux';
  import PropTypes from 'prop-types';
  import configureStore from '../store/configureStore';
  import { INTRODUCTION_VERSION } from '../actions/onboarding';
  import { BrowserRouter, Route } from 'react-router-dom';
  import { ScrollContext } from 'react-router-scroll-4';
  import UI from '../features/ui';
  import Introduction from '../features/introduction';
  import { fetchCustomEmojis } from '../actions/custom_emojis';
  import { hydrateStore } from '../actions/store';
  import { connectUserStream } from '../actions/streaming';
  import { IntlProvider, addLocaleData } from 'react-intl';
  import { getLocale } from '../locales';
  import initialState from '../initial_state';
  import ErrorBoundary from '../components/error_boundary';
  
  const { localeData, messages } = getLocale();
  addLocaleData(localeData);
  
  export const store = configureStore();
  const hydrateAction = hydrateStore(initialState);
  
  store.dispatch(hydrateAction);
  store.dispatch(fetchCustomEmojis());
  
  const mapStateToProps = state => ({
    showIntroduction: state.getIn(['settings', 'introductionVersion'], 0) < INTRODUCTION_VERSION,
  });
  
  @connect(mapStateToProps)
  class MastodonMount extends React.PureComponent {
  
    static propTypes = {
      showIntroduction: PropTypes.bool,
    };
  
    render () {
      const { showIntroduction } = this.props;
  
      if (showIntroduction) {
        return <Introduction />;
      }
  
      return (
        <BrowserRouter basename='/web'>
          <ScrollContext>
            <Route path='/' component={UI} />
          </ScrollContext>
        </BrowserRouter>
      );
    }
  
  }
  
  export default class Mastodon extends React.PureComponent {
  
    static propTypes = {
      locale: PropTypes.string.isRequired,
    };
  
    componentDidMount() {
      this.disconnect = store.dispatch(connectUserStream());
    }
  
    componentWillUnmount () {
      if (this.disconnect) {
        this.disconnect();
        this.disconnect = null;
      }
    }
  
    render () {
      const { locale } = this.props;
  
      return (
        <IntlProvider locale={locale} messages={messages}>
          <Provider store={store}>
            <ErrorBoundary>
              <MastodonMount />
            </ErrorBoundary>
          </Provider>
        </IntlProvider>
      );
    }
  
  }
  