Replace sprockets/browserify with Webpack (#2617)

* Replace browserify with webpack

* Add react-intl-translations-manager

* Do not minify in development, add offline-plugin for ServiceWorker background cache updates

* Adjust tests and dependencies

* Fix production deployments

* Fix tests

* More optimizations

* Improve travis cache for npm stuff

* Re-run travis

* Add back support for custom.scss as before

* Remove offline-plugin and babili

* Fix issue with Immutable.List().unshift(...values) not working as expected

* Make travis load schema instead of running all migrations in sequence

* Fix missing React import in WarningContainer. Optimize rendering performance by using ImmutablePureComponent instead of
React.PureComponent. ImmutablePureComponent uses Immutable.is() to compare props. Replace dynamic callback bindings in
<UI />

* Add react definitions to places that use JSX

* Add Procfile.dev for running rails, webpack and streaming API at the same time

app/javascript/mastodon/features/notifications/index.js

@@ -0,0 +1,143 @@
+import React from 'react';
+import { connect } from 'react-redux';
+import PropTypes from 'prop-types';
+import ImmutablePropTypes from 'react-immutable-proptypes';
+import Column from '../ui/components/column';
+import { expandNotifications, clearNotifications, scrollTopNotifications } from '../../actions/notifications';
+import NotificationContainer from './containers/notification_container';
+import { ScrollContainer } from 'react-router-scroll';
+import { defineMessages, injectIntl, FormattedMessage } from 'react-intl';
+import ColumnSettingsContainer from './containers/column_settings_container';
+import { createSelector } from 'reselect';
+import Immutable from 'immutable';
+import LoadMore from '../../components/load_more';
+import ClearColumnButton from './components/clear_column_button';
+import { openModal } from '../../actions/modal';
+
+const messages = defineMessages({
+  title: { id: 'column.notifications', defaultMessage: 'Notifications' },
+  clearMessage: { id: 'notifications.clear_confirmation', defaultMessage: 'Are you sure you want to permanently clear all your notifications?' },
+  clearConfirm: { id: 'notifications.clear', defaultMessage: 'Clear notifications' }
+});
+
+const getNotifications = createSelector([
+  state => Immutable.List(state.getIn(['settings', 'notifications', 'shows']).filter(item => !item).keys()),
+  state => state.getIn(['notifications', 'items'])
+], (excludedTypes, notifications) => notifications.filterNot(item => excludedTypes.includes(item.get('type'))));
+
+const mapStateToProps = state => ({
+  notifications: getNotifications(state),
+  isLoading: state.getIn(['notifications', 'isLoading'], true),
+  isUnread: state.getIn(['notifications', 'unread']) > 0
+});
+
+class Notifications extends React.PureComponent {
+
+  constructor (props, context) {
+    super(props, context);
+    this.handleScroll = this.handleScroll.bind(this);
+    this.handleLoadMore = this.handleLoadMore.bind(this);
+    this.handleClear = this.handleClear.bind(this);
+    this.setRef = this.setRef.bind(this);
+  }
+
+  handleScroll (e) {
+    const { scrollTop, scrollHeight, clientHeight } = e.target;
+    const offset = scrollHeight - scrollTop - clientHeight;
+    this._oldScrollPosition = scrollHeight - scrollTop;
+
+    if (250 > offset && !this.props.isLoading) {
+      this.props.dispatch(expandNotifications());
+    } else if (scrollTop < 100) {
+      this.props.dispatch(scrollTopNotifications(true));
+    } else {
+      this.props.dispatch(scrollTopNotifications(false));
+    }
+  }
+
+  componentDidUpdate (prevProps) {
+    if (this.node.scrollTop > 0 && (prevProps.notifications.size < this.props.notifications.size && prevProps.notifications.first() !== this.props.notifications.first() && !!this._oldScrollPosition)) {
+      this.node.scrollTop = this.node.scrollHeight - this._oldScrollPosition;
+    }
+  }
+
+  handleLoadMore (e) {
+    e.preventDefault();
+    this.props.dispatch(expandNotifications());
+  }
+
+  handleClear () {
+    const { dispatch, intl } = this.props;
+
+    dispatch(openModal('CONFIRM', {
+      message: intl.formatMessage(messages.clearMessage),
+      confirm: intl.formatMessage(messages.clearConfirm),
+      onConfirm: () => dispatch(clearNotifications())
+    }));
+  }
+
+  setRef (c) {
+    this.node = c;
+  }
+
+  render () {
+    const { intl, notifications, shouldUpdateScroll, isLoading, isUnread } = this.props;
+
+    let loadMore       = '';
+    let scrollableArea = '';
+    let unread         = '';
+
+    if (!isLoading && notifications.size > 0) {
+      loadMore = <LoadMore onClick={this.handleLoadMore} />;
+    }
+
+    if (isUnread) {
+      unread = <div className='notifications__unread-indicator' />;
+    }
+
+    if (isLoading || notifications.size > 0) {
+      scrollableArea = (
+        <div className='scrollable' onScroll={this.handleScroll} ref={this.setRef}>
+          {unread}
+
+          <div>
+            {notifications.map(item => <NotificationContainer key={item.get('id')} notification={item} accountId={item.get('account')} />)}
+            {loadMore}
+          </div>
+        </div>
+      );
+    } else {
+      scrollableArea = (
+        <div className='empty-column-indicator' ref={this.setRef}>
+          <FormattedMessage id='empty_column.notifications' defaultMessage="You don't have any notifications yet. Interact with others to start the conversation." />
+        </div>
+      );
+    }
+
+    return (
+      <Column icon='bell' active={isUnread} heading={intl.formatMessage(messages.title)}>
+        <ColumnSettingsContainer />
+        <ClearColumnButton onClick={this.handleClear} />
+        <ScrollContainer scrollKey='notifications' shouldUpdateScroll={shouldUpdateScroll}>
+          {scrollableArea}
+        </ScrollContainer>
+      </Column>
+    );
+  }
+
+}
+
+Notifications.propTypes = {
+  notifications: ImmutablePropTypes.list.isRequired,
+  dispatch: PropTypes.func.isRequired,
+  shouldUpdateScroll: PropTypes.func,
+  intl: PropTypes.object.isRequired,
+  isLoading: PropTypes.bool,
+  isUnread: PropTypes.bool
+};
+
+Notifications.defaultProps = {
+  trackScroll: true
+};
+
+export default connect(mapStateToProps)(injectIntl(Notifications));