Merge branch 'main' into glitch-soc/merge-upstream

Conflicts:
- `config/i18n-tasks.yml`:
  Upstream added new ignored strings, glitch-soc has extra ignored strings
  because of the theming system.
  Added upstream's changes.

app/javascript/mastodon/actions/compose.js

@@ -160,6 +160,18 @@ export function submitCompose(routerHistory) {
 
     dispatch(submitComposeRequest());
 
+    // If we're editing a post with media attachments, those have not
+    // necessarily been changed on the server. Do it now in the same
+    // API call.
+    let media_attributes;
+    if (statusId !== null) {
+      media_attributes = media.map(item => ({
+        id: item.get('id'),
+        description: item.get('description'),
+        focus: item.get('focus'),
+      }));
+    }
+
     api(getState).request({
       url: statusId === null ? '/api/v1/statuses' : `/api/v1/statuses/${statusId}`,
       method: statusId === null ? 'post' : 'put',
@@ -167,6 +179,7 @@ export function submitCompose(routerHistory) {
         status,
         in_reply_to_id: getState().getIn(['compose', 'in_reply_to'], null),
         media_ids: media.map(item => item.get('id')),
+        media_attributes,
         sensitive: getState().getIn(['compose', 'sensitive']),
         spoiler_text: getState().getIn(['compose', 'spoiler']) ? getState().getIn(['compose', 'spoiler_text'], '') : '',
         visibility: getState().getIn(['compose', 'privacy']),
@@ -377,11 +390,31 @@ export function changeUploadCompose(id, params) {
   return (dispatch, getState) => {
     dispatch(changeUploadComposeRequest());
 
-    api(getState).put(`/api/v1/media/${id}`, params).then(response => {
-      dispatch(changeUploadComposeSuccess(response.data));
-    }).catch(error => {
-      dispatch(changeUploadComposeFail(id, error));
-    });
+    let media = getState().getIn(['compose', 'media_attachments']).find((item) => item.get('id') === id);
+
+    // Editing already-attached media is deferred to editing the post itself.
+    // For simplicity's sake, fake an API reply.
+    if (media && !media.get('unattached')) {
+      let { description, focus } = params;
+      const data = media.toJS();
+
+      if (description) {
+        data.description = description;
+      }
+
+      if (focus) {
+        focus = focus.split(',');
+        data.meta = { focus: { x: parseFloat(focus[0]), y: parseFloat(focus[1]) } };
+      }
+
+      dispatch(changeUploadComposeSuccess(data, true));
+    } else {
+      api(getState).put(`/api/v1/media/${id}`, params).then(response => {
+        dispatch(changeUploadComposeSuccess(response.data, false));
+      }).catch(error => {
+        dispatch(changeUploadComposeFail(id, error));
+      });
+    }
   };
 }
 
@@ -392,10 +425,11 @@ export function changeUploadComposeRequest() {
   };
 }
 
-export function changeUploadComposeSuccess(media) {
+export function changeUploadComposeSuccess(media, attached) {
   return {
     type: COMPOSE_UPLOAD_CHANGE_SUCCESS,
     media: media,
+    attached: attached,
     skipLoading: true,
   };
 }

app/javascript/mastodon/actions/tags.js

@@ -1,9 +1,17 @@
-import api from '../api';
+import api, { getLinks } from '../api';
 
 export const HASHTAG_FETCH_REQUEST = 'HASHTAG_FETCH_REQUEST';
 export const HASHTAG_FETCH_SUCCESS = 'HASHTAG_FETCH_SUCCESS';
 export const HASHTAG_FETCH_FAIL    = 'HASHTAG_FETCH_FAIL';
 
+export const FOLLOWED_HASHTAGS_FETCH_REQUEST = 'FOLLOWED_HASHTAGS_FETCH_REQUEST';
+export const FOLLOWED_HASHTAGS_FETCH_SUCCESS = 'FOLLOWED_HASHTAGS_FETCH_SUCCESS';
+export const FOLLOWED_HASHTAGS_FETCH_FAIL    = 'FOLLOWED_HASHTAGS_FETCH_FAIL';
+
+export const FOLLOWED_HASHTAGS_EXPAND_REQUEST = 'FOLLOWED_HASHTAGS_EXPAND_REQUEST';
+export const FOLLOWED_HASHTAGS_EXPAND_SUCCESS = 'FOLLOWED_HASHTAGS_EXPAND_SUCCESS';
+export const FOLLOWED_HASHTAGS_EXPAND_FAIL    = 'FOLLOWED_HASHTAGS_EXPAND_FAIL';
+
 export const HASHTAG_FOLLOW_REQUEST = 'HASHTAG_FOLLOW_REQUEST';
 export const HASHTAG_FOLLOW_SUCCESS = 'HASHTAG_FOLLOW_SUCCESS';
 export const HASHTAG_FOLLOW_FAIL    = 'HASHTAG_FOLLOW_FAIL';
@@ -37,6 +45,78 @@ export const fetchHashtagFail = error => ({
   error,
 });
 
+export const fetchFollowedHashtags = () => (dispatch, getState) => {
+  dispatch(fetchFollowedHashtagsRequest());
+
+  api(getState).get('/api/v1/followed_tags').then(response => {
+    const next = getLinks(response).refs.find(link => link.rel === 'next');
+    dispatch(fetchFollowedHashtagsSuccess(response.data, next ? next.uri : null));
+  }).catch(err => {
+    dispatch(fetchFollowedHashtagsFail(err));
+  });
+};
+
+export function fetchFollowedHashtagsRequest() {
+  return {
+    type: FOLLOWED_HASHTAGS_FETCH_REQUEST,
+  };
+};
+
+export function fetchFollowedHashtagsSuccess(followed_tags, next) {
+  return {
+    type: FOLLOWED_HASHTAGS_FETCH_SUCCESS,
+    followed_tags,
+    next,
+  };
+};
+
+export function fetchFollowedHashtagsFail(error) {
+  return {
+    type: FOLLOWED_HASHTAGS_FETCH_FAIL,
+    error,
+  };
+};
+
+export function expandFollowedHashtags() {
+  return (dispatch, getState) => {
+    const url = getState().getIn(['followed_tags', 'next']);
+
+    if (url === null) {
+      return;
+    }
+
+    dispatch(expandFollowedHashtagsRequest());
+
+    api(getState).get(url).then(response => {
+      const next = getLinks(response).refs.find(link => link.rel === 'next');
+      dispatch(expandFollowedHashtagsSuccess(response.data, next ? next.uri : null));
+    }).catch(error => {
+      dispatch(expandFollowedHashtagsFail(error));
+    });
+  };
+};
+
+export function expandFollowedHashtagsRequest() {
+  return {
+    type: FOLLOWED_HASHTAGS_EXPAND_REQUEST,
+  };
+};
+
+export function expandFollowedHashtagsSuccess(followed_tags, next) {
+  return {
+    type: FOLLOWED_HASHTAGS_EXPAND_SUCCESS,
+    followed_tags,
+    next,
+  };
+};
+
+export function expandFollowedHashtagsFail(error) {
+  return {
+    type: FOLLOWED_HASHTAGS_EXPAND_FAIL,
+    error,
+  };
+};
+
 export const followHashtag = name => (dispatch, getState) => {
   dispatch(followHashtagRequest(name));
 

app/javascript/mastodon/components/admin/Trends.js

@@ -50,7 +50,7 @@ export default class Trends extends React.PureComponent {
             <Hashtag
               key={hashtag.name}
               name={hashtag.name}
-              to={`/admin/tags/${hashtag.id}`}
+              to={hashtag.id === undefined ? undefined : `/admin/tags/${hashtag.id}`}
               people={hashtag.history[0].accounts * 1 + hashtag.history[1].accounts * 1}
               uses={hashtag.history[0].uses * 1 + hashtag.history[1].uses * 1}
               history={hashtag.history.reverse().map(day => day.uses)}

app/javascript/mastodon/features/account/components/header.js

@@ -46,6 +46,7 @@ const messages = defineMessages({
   follow_requests: { id: 'navigation_bar.follow_requests', defaultMessage: 'Follow requests' },
   favourites: { id: 'navigation_bar.favourites', defaultMessage: 'Favourites' },
   lists: { id: 'navigation_bar.lists', defaultMessage: 'Lists' },
+  followed_tags: { id: 'navigation_bar.followed_tags', defaultMessage: 'Followed hashtags' },
   blocks: { id: 'navigation_bar.blocks', defaultMessage: 'Blocked users' },
   domain_blocks: { id: 'navigation_bar.domain_blocks', defaultMessage: 'Blocked domains' },
   mutes: { id: 'navigation_bar.mutes', defaultMessage: 'Muted users' },
@@ -193,7 +194,7 @@ class Header extends ImmutablePureComponent {
     }
 
     if (account.getIn(['relationship', 'requested']) || account.getIn(['relationship', 'following'])) {
-      bellBtn = <IconButton icon='bell-o' size={24} active={account.getIn(['relationship', 'notifying'])} title={intl.formatMessage(account.getIn(['relationship', 'notifying']) ? messages.disableNotifications : messages.enableNotifications, { name: account.get('username') })} onClick={this.props.onNotifyToggle} />;
+      bellBtn = <IconButton icon={account.getIn(['relationship', 'notifying']) ? 'bell' : 'bell-o'} size={24} active={account.getIn(['relationship', 'notifying'])} title={intl.formatMessage(account.getIn(['relationship', 'notifying']) ? messages.disableNotifications : messages.enableNotifications, { name: account.get('username') })} onClick={this.props.onNotifyToggle} />;
     }
 
     if (me !== account.get('id')) {
@@ -242,6 +243,7 @@ class Header extends ImmutablePureComponent {
       menu.push({ text: intl.formatMessage(messages.follow_requests), to: '/follow_requests' });
       menu.push({ text: intl.formatMessage(messages.favourites), to: '/favourites' });
       menu.push({ text: intl.formatMessage(messages.lists), to: '/lists' });
+      menu.push({ text: intl.formatMessage(messages.followed_tags), to: '/followed_tags' });
       menu.push(null);
       menu.push({ text: intl.formatMessage(messages.mutes), to: '/mutes' });
       menu.push({ text: intl.formatMessage(messages.blocks), to: '/blocks' });

app/javascript/mastodon/features/compose/components/action_bar.js

@@ -11,6 +11,7 @@ const messages = defineMessages({
   follow_requests: { id: 'navigation_bar.follow_requests', defaultMessage: 'Follow requests' },
   favourites: { id: 'navigation_bar.favourites', defaultMessage: 'Favourites' },
   lists: { id: 'navigation_bar.lists', defaultMessage: 'Lists' },
+  followed_tags: { id: 'navigation_bar.followed_tags', defaultMessage: 'Followed hashtags' },
   blocks: { id: 'navigation_bar.blocks', defaultMessage: 'Blocked users' },
   domain_blocks: { id: 'navigation_bar.domain_blocks', defaultMessage: 'Hidden domains' },
   mutes: { id: 'navigation_bar.mutes', defaultMessage: 'Muted users' },
@@ -45,6 +46,7 @@ class ActionBar extends React.PureComponent {
     menu.push({ text: intl.formatMessage(messages.favourites), to: '/favourites' });
     menu.push({ text: intl.formatMessage(messages.bookmarks), to: '/bookmarks' });
     menu.push({ text: intl.formatMessage(messages.lists), to: '/lists' });
+    menu.push({ text: intl.formatMessage(messages.followed_tags), to: '/followed_tags' });
     menu.push(null);
     menu.push({ text: intl.formatMessage(messages.mutes), to: '/mutes' });
     menu.push({ text: intl.formatMessage(messages.blocks), to: '/blocks' });

app/javascript/mastodon/features/compose/components/upload.js

@@ -43,10 +43,10 @@ export default class Upload extends ImmutablePureComponent {
             <div className='compose-form__upload-thumbnail' style={{ transform: `scale(${scale})`, backgroundImage: `url(${media.get('preview_url')})`, backgroundPosition: `${x}% ${y}%` }}>
               <div className='compose-form__upload__actions'>
                 <button type='button' className='icon-button' onClick={this.handleUndoClick}><Icon id='times' /> <FormattedMessage id='upload_form.undo' defaultMessage='Delete' /></button>
-                {!!media.get('unattached') && (<button type='button' className='icon-button' onClick={this.handleFocalPointClick}><Icon id='pencil' /> <FormattedMessage id='upload_form.edit' defaultMessage='Edit' /></button>)}
+                <button type='button' className='icon-button' onClick={this.handleFocalPointClick}><Icon id='pencil' /> <FormattedMessage id='upload_form.edit' defaultMessage='Edit' /></button>
               </div>
 
-              {(media.get('description') || '').length === 0 && !!media.get('unattached') && (
+              {(media.get('description') || '').length === 0 && (
                 <div className='compose-form__upload__warning'>
                   <button type='button' className='icon-button' onClick={this.handleFocalPointClick}><Icon id='info-circle' /> <FormattedMessage id='upload_form.description_missing' defaultMessage='No description added' /></button>
                 </div>

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

@@ -0,0 +1,89 @@
+import { debounce } from 'lodash';
+import PropTypes from 'prop-types';
+import React from 'react';
+import ImmutablePureComponent from 'react-immutable-pure-component';
+import ImmutablePropTypes from 'react-immutable-proptypes';
+import { defineMessages, injectIntl, FormattedMessage } from 'react-intl';
+import { connect } from 'react-redux';
+import ColumnHeader from 'mastodon/components/column_header';
+import ScrollableList from 'mastodon/components/scrollable_list';
+import Column from 'mastodon/features/ui/components/column';
+import { Helmet } from 'react-helmet';
+import Hashtag from 'mastodon/components/hashtag';
+import { expandFollowedHashtags, fetchFollowedHashtags } from 'mastodon/actions/tags';
+
+const messages = defineMessages({
+  heading: { id: 'followed_tags', defaultMessage: 'Followed hashtags' },
+});
+
+const mapStateToProps = state => ({
+  hashtags: state.getIn(['followed_tags', 'items']),
+  isLoading: state.getIn(['followed_tags', 'isLoading'], true),
+  hasMore: !!state.getIn(['followed_tags', 'next']),
+});
+
+export default @connect(mapStateToProps)
+@injectIntl
+class FollowedTags extends ImmutablePureComponent {
+
+  static propTypes = {
+    params: PropTypes.object.isRequired,
+    dispatch: PropTypes.func.isRequired,
+    intl: PropTypes.object.isRequired,
+    hashtags: ImmutablePropTypes.list,
+    isLoading: PropTypes.bool,
+    hasMore: PropTypes.bool,
+    multiColumn: PropTypes.bool,
+  };
+
+  componentDidMount() {
+    this.props.dispatch(fetchFollowedHashtags());
+  };
+
+  handleLoadMore = debounce(() => {
+    this.props.dispatch(expandFollowedHashtags());
+  }, 300, { leading: true });
+
+  render () {
+    const { intl, hashtags, isLoading, hasMore, multiColumn } = this.props;
+
+    const emptyMessage = <FormattedMessage id='empty_column.followed_tags' defaultMessage='You have not followed any hashtags yet. When you do, they will show up here.' />;
+
+    return (
+      <Column bindToDocument={!multiColumn}>
+        <ColumnHeader
+          icon='hashtag'
+          title={intl.formatMessage(messages.heading)}
+          showBackButton
+          multiColumn={multiColumn}
+        />
+
+        <ScrollableList
+          scrollKey='followed_tags'
+          emptyMessage={emptyMessage}
+          hasMore={hasMore}
+          isLoading={isLoading}
+          onLoadMore={this.handleLoadMore}
+          bindToDocument={!multiColumn}
+        >
+          {hashtags.map((hashtag) => (
+            <Hashtag
+              key={hashtag.get('name')}
+              name={hashtag.get('name')}
+              to={`/tags/${hashtag.get('name')}`}
+              withGraph={false}
+              // Taken from ImmutableHashtag. Should maybe refactor ImmutableHashtag to accept more options?
+              people={hashtag.getIn(['history', 0, 'accounts']) * 1 + hashtag.getIn(['history', 1, 'accounts']) * 1}
+              history={hashtag.get('history').reverse().map((day) => day.get('uses')).toArray()}
+            />
+          ))}
+        </ScrollableList>
+
+        <Helmet>
+          <meta name='robots' content='noindex' />
+        </Helmet>
+      </Column>
+    );
+  }
+
+}

app/javascript/mastodon/features/ui/components/focal_point_modal.js

@@ -320,7 +320,7 @@ class FocalPointModal extends ImmutablePureComponent {
               <React.Fragment>
                 <label className='setting-text-label' htmlFor='upload-modal__thumbnail'><FormattedMessage id='upload_form.thumbnail' defaultMessage='Change thumbnail' /></label>
 
-                <Button disabled={isUploadingThumbnail} text={intl.formatMessage(messages.chooseImage)} onClick={this.handleFileInputClick} />
+                <Button disabled={isUploadingThumbnail || !media.get('unattached')} text={intl.formatMessage(messages.chooseImage)} onClick={this.handleFileInputClick} />
 
                 <label>
                   <span style={{ display: 'none' }}>{intl.formatMessage(messages.chooseImage)}</span>

app/javascript/mastodon/features/ui/components/sign_in_banner.js

@@ -30,7 +30,7 @@ const SignInBanner = () => {
 
   return (
     <div className='sign-in-banner'>
-      <p><FormattedMessage id='sign_in_banner.text' defaultMessage='Sign in to follow profiles or hashtags, favourite, share and reply to posts, or interact from your account on a different server.' /></p>
+      <p><FormattedMessage id='sign_in_banner.text' defaultMessage='Sign in to follow profiles or hashtags, favourite, share and reply to posts. You can also interact from your account on a different server.' /></p>
       <a href='/auth/sign_in' className='button button--block'><FormattedMessage id='sign_in_banner.sign_in' defaultMessage='Sign in' /></a>
       {signupButton}
     </div>

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

@@ -42,6 +42,7 @@ import {
   FollowRequests,
   FavouritedStatuses,
   BookmarkedStatuses,
+  FollowedTags,
   ListTimeline,
   Blocks,
   DomainBlocks,
@@ -54,7 +55,7 @@ import {
   About,
   PrivacyPolicy,
 } from './util/async-components';
-import initialState, { me, owner, singleUserMode, showTrends } from '../../initial_state';
+import initialState, { me, owner, singleUserMode, showTrends, trendsAsLanding } from '../../initial_state';
 import { closeOnboarding, INTRODUCTION_VERSION } from 'mastodon/actions/onboarding';
 import Header from './components/header';
 
@@ -163,7 +164,7 @@ class SwitchingColumnsArea extends React.PureComponent {
       }
     } else if (singleUserMode && owner && initialState?.accounts[owner]) {
       redirect = <Redirect from='/' to={`/@${initialState.accounts[owner].username}`} exact />;
-    } else if (showTrends) {
+    } else if (showTrends && trendsAsLanding) {
       redirect = <Redirect from='/' to='/explore' exact />;
     } else {
       redirect = <Redirect from='/' to='/about' exact />;
@@ -216,6 +217,7 @@ class SwitchingColumnsArea extends React.PureComponent {
           <WrappedRoute path='/follow_requests' component={FollowRequests} content={children} />
           <WrappedRoute path='/blocks' component={Blocks} content={children} />
           <WrappedRoute path='/domain_blocks' component={DomainBlocks} content={children} />
+          <WrappedRoute path='/followed_tags' component={FollowedTags} content={children} />
           <WrappedRoute path='/mutes' component={Mutes} content={children} />
           <WrappedRoute path='/lists' component={Lists} content={children} />
 

app/javascript/mastodon/features/ui/util/async-components.js

@@ -90,6 +90,10 @@ export function FavouritedStatuses () {
   return import(/* webpackChunkName: "features/favourited_statuses" */'../../favourited_statuses');
 }
 
+export function FollowedTags () {
+  return import(/* webpackChunkName: "features/followed_tags" */'../../followed_tags');
+}
+
 export function BookmarkedStatuses () {
   return import(/* webpackChunkName: "features/bookmarked_statuses" */'../../bookmarked_statuses');
 }

app/javascript/mastodon/initial_state.js

@@ -75,6 +75,7 @@
  * @property {boolean} timeline_preview
  * @property {string} title
  * @property {boolean} trends
+ * @property {boolean} trends_as_landing_page
  * @property {boolean} unfollow_modal
  * @property {boolean} use_blurhash
  * @property {boolean=} use_pending_items
@@ -126,6 +127,7 @@ export const singleUserMode = getMeta('single_user_mode');
 export const source_url = getMeta('source_url');
 export const timelinePreview = getMeta('timeline_preview');
 export const title = getMeta('title');
+export const trendsAsLanding = getMeta('trends_as_landing_page');
 export const unfollowModal = getMeta('unfollow_modal');
 export const useBlurhash = getMeta('use_blurhash');
 export const usePendingItems = getMeta('use_pending_items');

app/javascript/mastodon/locales/defaultMessages.json

@@ -1391,6 +1391,10 @@
         "defaultMessage": "Lists",
         "id": "navigation_bar.lists"
       },
+      {
+        "defaultMessage": "Followed hashtags",
+        "id": "navigation_bar.followed_tags"
+      },
       {
         "defaultMessage": "Blocked users",
         "id": "navigation_bar.blocks"
@@ -4220,7 +4224,7 @@
         "id": "sign_in_banner.create_account"
       },
       {
-        "defaultMessage": "Sign in to follow profiles or hashtags, favourite, share and reply to posts, or interact from your account on a different server.",
+        "defaultMessage": "Sign in to follow profiles or hashtags, favourite, share and reply to posts. You can also interact from your account on a different server.",
         "id": "sign_in_banner.text"
       },
       {
@@ -4310,4 +4314,4 @@
     ],
     "path": "app/javascript/mastodon/features/video/index.json"
   }
-]
+]

app/javascript/mastodon/locales/en.json

@@ -383,6 +383,7 @@
   "navigation_bar.favourites": "Favourites",
   "navigation_bar.filters": "Muted words",
   "navigation_bar.follow_requests": "Follow requests",
+  "navigation_bar.followed_tags": "Followed hashtags",
   "navigation_bar.follows_and_followers": "Follows and followers",
   "navigation_bar.lists": "Lists",
   "navigation_bar.misc": "Misc",
@@ -545,7 +546,7 @@
   "server_banner.server_stats": "Server stats:",
   "sign_in_banner.create_account": "Create account",
   "sign_in_banner.sign_in": "Sign in",
-  "sign_in_banner.text": "Sign in to follow profiles or hashtags, favourite, share and reply to posts, or interact from your account on a different server.",
+  "sign_in_banner.text": "Sign in to follow profiles or hashtags, favourite, share and reply to posts. You can also interact from your account on a different server.",
   "status.admin_account": "Open moderation interface for @{name}",
   "status.admin_domain": "Open moderation interface for {domain}",
   "status.admin_status": "Open this post in the moderation interface",

app/javascript/mastodon/reducers/compose.js

@@ -444,7 +444,7 @@ export default function compose(state = initialState, action) {
       .setIn(['media_modal', 'dirty'], false)
       .update('media_attachments', list => list.map(item => {
         if (item.get('id') === action.media.id) {
-          return fromJS(action.media).set('unattached', true);
+          return fromJS(action.media).set('unattached', !action.attached);
         }
 
         return item;

app/javascript/mastodon/reducers/followed_tags.js

@@ -0,0 +1,42 @@
+import {
+  FOLLOWED_HASHTAGS_FETCH_REQUEST,
+  FOLLOWED_HASHTAGS_FETCH_SUCCESS,
+  FOLLOWED_HASHTAGS_FETCH_FAIL,
+  FOLLOWED_HASHTAGS_EXPAND_REQUEST,
+  FOLLOWED_HASHTAGS_EXPAND_SUCCESS,
+  FOLLOWED_HASHTAGS_EXPAND_FAIL,
+} from 'mastodon/actions/tags';
+import { Map as ImmutableMap, List as ImmutableList, fromJS } from 'immutable';
+
+const initialState = ImmutableMap({
+  items: ImmutableList(),
+  isLoading: false,
+  next: null,
+});
+
+export default function followed_tags(state = initialState, action) {
+  switch(action.type) {
+  case FOLLOWED_HASHTAGS_FETCH_REQUEST:
+    return state.set('isLoading', true);
+  case FOLLOWED_HASHTAGS_FETCH_SUCCESS:
+    return state.withMutations(map => {
+      map.set('items', fromJS(action.followed_tags));
+      map.set('isLoading', false);
+      map.set('next', action.next);
+    });
+  case FOLLOWED_HASHTAGS_FETCH_FAIL:
+    return state.set('isLoading', false);
+  case FOLLOWED_HASHTAGS_EXPAND_REQUEST:
+    return state.set('isLoading', true);
+  case FOLLOWED_HASHTAGS_EXPAND_SUCCESS:
+    return state.withMutations(map => {
+      map.update('items', set => set.concat(fromJS(action.followed_tags)));
+      map.set('isLoading', false);
+      map.set('next', action.next);
+    });
+  case FOLLOWED_HASHTAGS_EXPAND_FAIL:
+    return state.set('isLoading', false);
+  default:
+    return state;
+  }
+};

app/javascript/mastodon/reducers/index.js

@@ -40,6 +40,7 @@ import picture_in_picture from './picture_in_picture';
 import accounts_map from './accounts_map';
 import history from './history';
 import tags from './tags';
+import followed_tags from './followed_tags';
 
 const reducers = {
   announcements,
@@ -83,6 +84,7 @@ const reducers = {
   picture_in_picture,
   history,
   tags,
+  followed_tags,
 };
 
 export default combineReducers(reducers);