diff --git a/app/soapbox/actions/__tests__/compose.test.js b/app/soapbox/actions/__tests__/compose.test.ts
similarity index 100%
rename from app/soapbox/actions/__tests__/compose.test.js
rename to app/soapbox/actions/__tests__/compose.test.ts
diff --git a/app/soapbox/actions/__tests__/preload-test.js b/app/soapbox/actions/__tests__/preload.test.ts
similarity index 100%
rename from app/soapbox/actions/__tests__/preload-test.js
rename to app/soapbox/actions/__tests__/preload.test.ts
diff --git a/app/soapbox/actions/__tests__/statuses-test.js b/app/soapbox/actions/__tests__/statuses.test.ts
similarity index 100%
rename from app/soapbox/actions/__tests__/statuses-test.js
rename to app/soapbox/actions/__tests__/statuses.test.ts
diff --git a/app/soapbox/components/__tests__/autosuggest_emoji.test.js b/app/soapbox/components/__tests__/autosuggest_emoji.test.tsx
similarity index 88%
rename from app/soapbox/components/__tests__/autosuggest_emoji.test.js
rename to app/soapbox/components/__tests__/autosuggest_emoji.test.tsx
index 938ca737b..8fab0ef8b 100644
--- a/app/soapbox/components/__tests__/autosuggest_emoji.test.js
+++ b/app/soapbox/components/__tests__/autosuggest_emoji.test.tsx
@@ -10,7 +10,7 @@ describe('<AutosuggestEmoji />', () => {
       colons: ':foobar:',
     };
 
-    render(<AutosuggestEmoji emoji={emoji} />);
+    render(<AutosuggestEmoji emoji={emoji as any} />);
 
     expect(screen.getByTestId('emoji')).toHaveTextContent('foobar');
     expect(screen.getByRole('img').getAttribute('src')).not.toBe('http://example.com/emoji.png');
@@ -24,7 +24,7 @@ describe('<AutosuggestEmoji />', () => {
       colons: ':foobar:',
     };
 
-    render(<AutosuggestEmoji emoji={emoji} />);
+    render(<AutosuggestEmoji emoji={emoji as any} />);
 
     expect(screen.getByTestId('emoji')).toHaveTextContent('foobar');
     expect(screen.getByRole('img').getAttribute('src')).toBe('http://example.com/emoji.png');
diff --git a/app/soapbox/components/__tests__/avatar.test.js b/app/soapbox/components/__tests__/avatar.test.tsx
similarity index 100%
rename from app/soapbox/components/__tests__/avatar.test.js
rename to app/soapbox/components/__tests__/avatar.test.tsx
diff --git a/app/soapbox/components/__tests__/avatar_overlay.test.js b/app/soapbox/components/__tests__/avatar_overlay.test.tsx
similarity index 100%
rename from app/soapbox/components/__tests__/avatar_overlay.test.js
rename to app/soapbox/components/__tests__/avatar_overlay.test.tsx
diff --git a/app/soapbox/components/__tests__/badge.test.js b/app/soapbox/components/__tests__/badge.test.tsx
similarity index 100%
rename from app/soapbox/components/__tests__/badge.test.js
rename to app/soapbox/components/__tests__/badge.test.tsx
diff --git a/app/soapbox/components/__tests__/display_name.test.js b/app/soapbox/components/__tests__/display_name.test.tsx
similarity index 100%
rename from app/soapbox/components/__tests__/display_name.test.js
rename to app/soapbox/components/__tests__/display_name.test.tsx
diff --git a/app/soapbox/components/__tests__/emoji_selector.test.js b/app/soapbox/components/__tests__/emoji_selector.test.tsx
similarity index 100%
rename from app/soapbox/components/__tests__/emoji_selector.test.js
rename to app/soapbox/components/__tests__/emoji_selector.test.tsx
diff --git a/app/soapbox/components/__tests__/scroll-top-button.test.js b/app/soapbox/components/__tests__/scroll-top-button.test.tsx
similarity index 100%
rename from app/soapbox/components/__tests__/scroll-top-button.test.js
rename to app/soapbox/components/__tests__/scroll-top-button.test.tsx
diff --git a/app/soapbox/components/profile-hover-card.tsx b/app/soapbox/components/profile-hover-card.tsx
index 8e5e281bd..11de952f2 100644
--- a/app/soapbox/components/profile-hover-card.tsx
+++ b/app/soapbox/components/profile-hover-card.tsx
@@ -68,9 +68,9 @@ export const ProfileHoverCard: React.FC<IProfileHoverCard> = ({ visible = true }
   const [popperElement, setPopperElement] = useState<HTMLElement | null>(null);
 
   const me = useAppSelector(state => state.me);
-  const accountId: string | undefined = useAppSelector(state => state.profile_hover_card.get<string | undefined>('accountId', undefined));
+  const accountId: string | undefined = useAppSelector(state => state.profile_hover_card.accountId || undefined);
   const account   = useAppSelector(state => accountId && getAccount(state, accountId));
-  const targetRef = useAppSelector(state => state.profile_hover_card.getIn(['ref', 'current']) as Element | null);
+  const targetRef = useAppSelector(state => state.profile_hover_card.ref?.current);
   const badges = account ? getBadges(account) : [];
 
   useEffect(() => {
diff --git a/app/soapbox/components/ui/modal/modal.tsx b/app/soapbox/components/ui/modal/modal.tsx
index f0a661229..3b2ba89e9 100644
--- a/app/soapbox/components/ui/modal/modal.tsx
+++ b/app/soapbox/components/ui/modal/modal.tsx
@@ -27,7 +27,7 @@ interface IModal {
   /** Callback when the modal is cancelled. */
   cancelAction?: () => void,
   /** Cancel button text. */
-  cancelText?: string,
+  cancelText?: React.ReactNode,
   /** URL to an SVG icon for the close button. */
   closeIcon?: string,
   /** Position of the close button. */
diff --git a/app/soapbox/features/auth_login/components/__tests__/captcha.test.js b/app/soapbox/features/auth_login/components/__tests__/captcha.test.tsx
similarity index 100%
rename from app/soapbox/features/auth_login/components/__tests__/captcha.test.js
rename to app/soapbox/features/auth_login/components/__tests__/captcha.test.tsx
diff --git a/app/soapbox/features/auth_login/components/__tests__/login_form.test.js b/app/soapbox/features/auth_login/components/__tests__/login_form.test.tsx
similarity index 100%
rename from app/soapbox/features/auth_login/components/__tests__/login_form.test.js
rename to app/soapbox/features/auth_login/components/__tests__/login_form.test.tsx
diff --git a/app/soapbox/features/auth_login/components/__tests__/login_page.test.js b/app/soapbox/features/auth_login/components/__tests__/login_page.test.tsx
similarity index 100%
rename from app/soapbox/features/auth_login/components/__tests__/login_page.test.js
rename to app/soapbox/features/auth_login/components/__tests__/login_page.test.tsx
diff --git a/app/soapbox/features/auth_login/components/__tests__/password_reset_confirm-test.js b/app/soapbox/features/auth_login/components/__tests__/password_reset_confirm.test.tsx
similarity index 100%
rename from app/soapbox/features/auth_login/components/__tests__/password_reset_confirm-test.js
rename to app/soapbox/features/auth_login/components/__tests__/password_reset_confirm.test.tsx
diff --git a/app/soapbox/features/compose/components/reply_indicator.tsx b/app/soapbox/features/compose/components/reply_indicator.tsx
index d135bfdeb..f47b0494b 100644
--- a/app/soapbox/features/compose/components/reply_indicator.tsx
+++ b/app/soapbox/features/compose/components/reply_indicator.tsx
@@ -9,13 +9,13 @@ import type { Status } from 'soapbox/types/entities';
 
 interface IReplyIndicator {
   status?: Status,
-  onCancel: () => void,
+  onCancel?: () => void,
   hideActions: boolean,
 }
 
 const ReplyIndicator: React.FC<IReplyIndicator> = ({ status, hideActions, onCancel }) => {
   const handleClick = () => {
-    onCancel();
+    onCancel!();
   };
 
   if (!status) {
@@ -23,7 +23,7 @@ const ReplyIndicator: React.FC<IReplyIndicator> = ({ status, hideActions, onCanc
   }
 
   let actions = {};
-  if (!hideActions) {
+  if (!hideActions && onCancel) {
     actions = {
       onActionClick: handleClick,
       actionIcon: require('@tabler/icons/icons/x.svg'),
diff --git a/app/soapbox/features/crypto_donate/components/crypto_address.tsx b/app/soapbox/features/crypto_donate/components/crypto_address.tsx
index 3fb28f6e4..afffd085a 100644
--- a/app/soapbox/features/crypto_donate/components/crypto_address.tsx
+++ b/app/soapbox/features/crypto_donate/components/crypto_address.tsx
@@ -10,7 +10,7 @@ import { getTitle } from '../utils/coin_db';
 
 import CryptoIcon from './crypto_icon';
 
-interface ICryptoAddress {
+export interface ICryptoAddress {
   address: string,
   ticker: string,
   note?: string,
diff --git a/app/soapbox/features/emoji/__tests__/emoji-test.js b/app/soapbox/features/emoji/__tests__/emoji.test.ts
similarity index 100%
rename from app/soapbox/features/emoji/__tests__/emoji-test.js
rename to app/soapbox/features/emoji/__tests__/emoji.test.ts
diff --git a/app/soapbox/features/emoji/__tests__/emoji_index-test.js b/app/soapbox/features/emoji/__tests__/emoji_index.test.ts
similarity index 100%
rename from app/soapbox/features/emoji/__tests__/emoji_index-test.js
rename to app/soapbox/features/emoji/__tests__/emoji_index.test.ts
diff --git a/app/soapbox/features/emoji/emoji_mart_data_light.js b/app/soapbox/features/emoji/emoji_mart_data_light.ts
similarity index 67%
rename from app/soapbox/features/emoji/emoji_mart_data_light.js
rename to app/soapbox/features/emoji/emoji_mart_data_light.ts
index 4756c1a5d..03bdbf765 100644
--- a/app/soapbox/features/emoji/emoji_mart_data_light.js
+++ b/app/soapbox/features/emoji/emoji_mart_data_light.ts
@@ -1,15 +1,17 @@
 // The output of this module is designed to mimic emoji-mart's
 // "data" object, such that we can use it for a light version of emoji-mart's
 // emojiIndex.search functionality.
-const [ shortCodesToEmojiData, skins, categories, short_names ] = require('./emoji_compressed');
-const { unicodeToUnifiedName } = require('./unicode_to_unified_name');
+import emojiCompressed from './emoji_compressed';
+import { unicodeToUnifiedName } from './unicode_to_unified_name';
 
-const emojis = {};
+const [ shortCodesToEmojiData, skins, categories, short_names ] = emojiCompressed;
+
+const emojis: Record<string, any> = {};
 
 // decompress
 Object.keys(shortCodesToEmojiData).forEach((shortCode) => {
   const [
-    filenameData, // eslint-disable-line @typescript-eslint/no-unused-vars
+    _filenameData, // eslint-disable-line @typescript-eslint/no-unused-vars
     searchData,
   ] = shortCodesToEmojiData[shortCode];
   const [
@@ -27,7 +29,14 @@ Object.keys(shortCodesToEmojiData).forEach((shortCode) => {
   };
 });
 
-module.exports = {
+export {
+  emojis,
+  skins,
+  categories,
+  short_names,
+};
+
+export default {
   emojis,
   skins,
   categories,
diff --git a/app/soapbox/features/filters/index.js b/app/soapbox/features/filters/index.js
deleted file mode 100644
index 62e12cdf6..000000000
--- a/app/soapbox/features/filters/index.js
+++ /dev/null
@@ -1,257 +0,0 @@
-import PropTypes from 'prop-types';
-import React from 'react';
-import ImmutablePureComponent from 'react-immutable-pure-component';
-import { defineMessages, injectIntl, FormattedMessage } from 'react-intl';
-import { connect } from 'react-redux';
-
-import { fetchFilters, createFilter, deleteFilter } from 'soapbox/actions/filters';
-import snackbar from 'soapbox/actions/snackbar';
-import Icon from 'soapbox/components/icon';
-import ScrollableList from 'soapbox/components/scrollable_list';
-import { Button, CardHeader, CardTitle, Column, Form, FormActions, FormGroup, Input, Text } from 'soapbox/components/ui';
-import {
-  FieldsGroup,
-  Checkbox,
-} from 'soapbox/features/forms';
-
-const messages = defineMessages({
-  heading: { id: 'column.filters', defaultMessage: 'Muted words' },
-  subheading_add_new: { id: 'column.filters.subheading_add_new', defaultMessage: 'Add New Filter' },
-  keyword: { id: 'column.filters.keyword', defaultMessage: 'Keyword or phrase' },
-  expires: { id: 'column.filters.expires', defaultMessage: 'Expire after' },
-  expires_hint: { id: 'column.filters.expires_hint', defaultMessage: 'Expiration dates are not currently supported' },
-  home_timeline: { id: 'column.filters.home_timeline', defaultMessage: 'Home timeline' },
-  public_timeline: { id: 'column.filters.public_timeline', defaultMessage: 'Public timeline' },
-  notifications: { id: 'column.filters.notifications', defaultMessage: 'Notifications' },
-  conversations: { id: 'column.filters.conversations', defaultMessage: 'Conversations' },
-  drop_header: { id: 'column.filters.drop_header', defaultMessage: 'Drop instead of hide' },
-  drop_hint: { id: 'column.filters.drop_hint', defaultMessage: 'Filtered posts will disappear irreversibly, even if filter is later removed' },
-  whole_word_header: { id: 'column.filters.whole_word_header', defaultMessage: 'Whole word' },
-  whole_word_hint: { id: 'column.filters.whole_word_hint', defaultMessage: 'When the keyword or phrase is alphanumeric only, it will only be applied if it matches the whole word' },
-  add_new: { id: 'column.filters.add_new', defaultMessage: 'Add New Filter' },
-  create_error: { id: 'column.filters.create_error', defaultMessage: 'Error adding filter' },
-  delete_error: { id: 'column.filters.delete_error', defaultMessage: 'Error deleting filter' },
-  subheading_filters: { id: 'column.filters.subheading_filters', defaultMessage: 'Current Filters' },
-  delete: { id: 'column.filters.delete', defaultMessage: 'Delete' },
-});
-
-// const expirations = {
-//   null: 'Never',
-//   // 3600: '30 minutes',
-//   // 21600: '1 hour',
-//   // 43200: '12 hours',
-//   // 86400 : '1 day',
-//   // 604800: '1 week',
-// };
-
-const mapStateToProps = state => ({
-  filters: state.get('filters'),
-});
-
-export default @connect(mapStateToProps)
-@injectIntl
-class Filters extends ImmutablePureComponent {
-
-  static propTypes = {
-    params: PropTypes.object.isRequired,
-    dispatch: PropTypes.func.isRequired,
-    intl: PropTypes.object.isRequired,
-  };
-
-  state = {
-    phrase: '',
-    expires_at: '',
-    home_timeline: true,
-    public_timeline: false,
-    notifications: false,
-    conversations: false,
-    irreversible: false,
-    whole_word: true,
-  }
-
-
-  componentDidMount() {
-    this.props.dispatch(fetchFilters());
-  }
-
-  handleInputChange = e => {
-    this.setState({ [e.target.name]: e.target.value });
-  }
-
-  handleSelectChange = e => {
-    this.setState({ [e.target.name]: e.target.value });
-  }
-
-  handleCheckboxChange = e => {
-    this.setState({ [e.target.name]: e.target.checked });
-  }
-
-  handleAddNew = e => {
-    e.preventDefault();
-    const { intl, dispatch } = this.props;
-    const { phrase, whole_word, expires_at, irreversible } = this.state;
-    const { home_timeline, public_timeline, notifications, conversations } = this.state;
-    const context = [];
-
-    if (home_timeline) {
-      context.push('home');
-    }
-    if (public_timeline) {
-      context.push('public');
-    }
-    if (notifications) {
-      context.push('notifications');
-    }
-    if (conversations) {
-      context.push('thread');
-    }
-
-    dispatch(createFilter(intl, phrase, expires_at, context, whole_word, irreversible)).then(response => {
-      return dispatch(fetchFilters());
-    }).catch(error => {
-      dispatch(snackbar.error(intl.formatMessage(messages.create_error)));
-    });
-  }
-
-  handleFilterDelete = e => {
-    const { intl, dispatch } = this.props;
-    dispatch(deleteFilter(intl, e.currentTarget.dataset.value)).then(response => {
-      return dispatch(fetchFilters());
-    }).catch(error => {
-      dispatch(snackbar.error(intl.formatMessage(messages.delete_error)));
-    });
-  }
-
-
-  render() {
-    const { intl, filters } = this.props;
-    const emptyMessage = <FormattedMessage id='empty_column.filters' defaultMessage="You haven't created any muted words yet." />;
-
-    return (
-      <Column className='filter-settings-panel' icon='filter' label={intl.formatMessage(messages.heading)}>
-        <CardHeader>
-          <CardTitle title={intl.formatMessage(messages.subheading_add_new)} />
-        </CardHeader>
-        <Form onSubmit={this.handleAddNew}>
-          <FormGroup labelText={intl.formatMessage(messages.keyword)}>
-            <Input
-              required
-              type='text'
-              name='phrase'
-              onChange={this.handleInputChange}
-            />
-          </FormGroup>
-          {/* <FormGroup labelText={intl.formatMessage(messages.expires)} hintText={intl.formatMessage(messages.expires_hint)}>
-            <SelectDropdown
-              items={expirations}
-              defaultValue={expirations.never}
-              onChange={this.handleSelectChange}
-            />
-          </FormGroup> */}
-
-          <FieldsGroup>
-            <Text tag='label'>
-              <FormattedMessage id='filters.context_header' defaultMessage='Filter contexts' />
-            </Text>
-            <Text theme='muted' size='xs'>
-              <FormattedMessage id='filters.context_hint' defaultMessage='One or multiple contexts where the filter should apply' />
-            </Text>
-            <div className='two-col'>
-              <Checkbox
-                label={intl.formatMessage(messages.home_timeline)}
-                name='home_timeline'
-                checked={this.state.home_timeline}
-                onChange={this.handleCheckboxChange}
-              />
-              <Checkbox
-                label={intl.formatMessage(messages.public_timeline)}
-                name='public_timeline'
-                checked={this.state.public_timeline}
-                onChange={this.handleCheckboxChange}
-              />
-              <Checkbox
-                label={intl.formatMessage(messages.notifications)}
-                name='notifications'
-                checked={this.state.notifications}
-                onChange={this.handleCheckboxChange}
-              />
-              <Checkbox
-                label={intl.formatMessage(messages.conversations)}
-                name='conversations'
-                checked={this.state.conversations}
-                onChange={this.handleCheckboxChange}
-              />
-            </div>
-
-          </FieldsGroup>
-
-          <FieldsGroup>
-            <Checkbox
-              label={intl.formatMessage(messages.drop_header)}
-              hint={intl.formatMessage(messages.drop_hint)}
-              name='irreversible'
-              checked={this.state.irreversible}
-              onChange={this.handleCheckboxChange}
-            />
-            <Checkbox
-              label={intl.formatMessage(messages.whole_word_header)}
-              hint={intl.formatMessage(messages.whole_word_hint)}
-              name='whole_word'
-              checked={this.state.whole_word}
-              onChange={this.handleCheckboxChange}
-            />
-          </FieldsGroup>
-
-          <FormActions>
-            <Button type='submit' theme='primary'>{intl.formatMessage(messages.add_new)}</Button>
-          </FormActions>
-        </Form>
-
-        <CardHeader>
-          <CardTitle title={intl.formatMessage(messages.subheading_filters)} />
-        </CardHeader>
-
-        <ScrollableList
-          scrollKey='filters'
-          emptyMessage={emptyMessage}
-        >
-          {filters.map((filter, i) => (
-            <div key={i} className='filter__container'>
-              <div className='filter__details'>
-                <div className='filter__phrase'>
-                  <span className='filter__list-label'><FormattedMessage id='filters.filters_list_phrase_label' defaultMessage='Keyword or phrase:' /></span>
-                  <span className='filter__list-value'>{filter.get('phrase')}</span>
-                </div>
-                <div className='filter__contexts'>
-                  <span className='filter__list-label'><FormattedMessage id='filters.filters_list_context_label' defaultMessage='Filter contexts:' /></span>
-                  <span className='filter__list-value'>
-                    {filter.get('context').map((context, i) => (
-                      <span key={i} className='context'>{context}</span>
-                    ))}
-                  </span>
-                </div>
-                <div className='filter__details'>
-                  <span className='filter__list-label'><FormattedMessage id='filters.filters_list_details_label' defaultMessage='Filter settings:' /></span>
-                  <span className='filter__list-value'>
-                    {filter.get('irreversible') ?
-                      <span><FormattedMessage id='filters.filters_list_drop' defaultMessage='Drop' /></span> :
-                      <span><FormattedMessage id='filters.filters_list_hide' defaultMessage='Hide' /></span>
-                    }
-                    {filter.get('whole_word') &&
-                      <span><FormattedMessage id='filters.filters_list_whole-word' defaultMessage='Whole word' /></span>
-                    }
-                  </span>
-                </div>
-              </div>
-              <div className='filter__delete' role='button' tabIndex='0' onClick={this.handleFilterDelete} data-value={filter.get('id')} aria-label={intl.formatMessage(messages.delete)}>
-                <Icon className='filter__delete-icon' id='times' size={40} />
-                <span className='filter__delete-label'><FormattedMessage id='filters.filters_list_delete' defaultMessage='Delete' /></span>
-              </div>
-            </div>
-          ))}
-        </ScrollableList>
-      </Column>
-    );
-  }
-
-}
diff --git a/app/soapbox/features/filters/index.tsx b/app/soapbox/features/filters/index.tsx
new file mode 100644
index 000000000..d71adb96e
--- /dev/null
+++ b/app/soapbox/features/filters/index.tsx
@@ -0,0 +1,229 @@
+import React, { useEffect, useState } from 'react';
+import { defineMessages, FormattedMessage, useIntl } from 'react-intl';
+
+import { fetchFilters, createFilter, deleteFilter } from 'soapbox/actions/filters';
+import snackbar from 'soapbox/actions/snackbar';
+import Icon from 'soapbox/components/icon';
+import ScrollableList from 'soapbox/components/scrollable_list';
+import { Button, CardHeader, CardTitle, Column, Form, FormActions, FormGroup, Input, Text } from 'soapbox/components/ui';
+import {
+  FieldsGroup,
+  Checkbox,
+} from 'soapbox/features/forms';
+import { useAppDispatch, useAppSelector } from 'soapbox/hooks';
+
+const messages = defineMessages({
+  heading: { id: 'column.filters', defaultMessage: 'Muted words' },
+  subheading_add_new: { id: 'column.filters.subheading_add_new', defaultMessage: 'Add New Filter' },
+  keyword: { id: 'column.filters.keyword', defaultMessage: 'Keyword or phrase' },
+  expires: { id: 'column.filters.expires', defaultMessage: 'Expire after' },
+  expires_hint: { id: 'column.filters.expires_hint', defaultMessage: 'Expiration dates are not currently supported' },
+  home_timeline: { id: 'column.filters.home_timeline', defaultMessage: 'Home timeline' },
+  public_timeline: { id: 'column.filters.public_timeline', defaultMessage: 'Public timeline' },
+  notifications: { id: 'column.filters.notifications', defaultMessage: 'Notifications' },
+  conversations: { id: 'column.filters.conversations', defaultMessage: 'Conversations' },
+  drop_header: { id: 'column.filters.drop_header', defaultMessage: 'Drop instead of hide' },
+  drop_hint: { id: 'column.filters.drop_hint', defaultMessage: 'Filtered posts will disappear irreversibly, even if filter is later removed' },
+  whole_word_header: { id: 'column.filters.whole_word_header', defaultMessage: 'Whole word' },
+  whole_word_hint: { id: 'column.filters.whole_word_hint', defaultMessage: 'When the keyword or phrase is alphanumeric only, it will only be applied if it matches the whole word' },
+  add_new: { id: 'column.filters.add_new', defaultMessage: 'Add New Filter' },
+  create_error: { id: 'column.filters.create_error', defaultMessage: 'Error adding filter' },
+  delete_error: { id: 'column.filters.delete_error', defaultMessage: 'Error deleting filter' },
+  subheading_filters: { id: 'column.filters.subheading_filters', defaultMessage: 'Current Filters' },
+  delete: { id: 'column.filters.delete', defaultMessage: 'Delete' },
+});
+
+// const expirations = {
+//   null: 'Never',
+//   // 3600: '30 minutes',
+//   // 21600: '1 hour',
+//   // 43200: '12 hours',
+//   // 86400 : '1 day',
+//   // 604800: '1 week',
+// };
+
+const Filters = () => {
+  const intl = useIntl();
+  const dispatch = useAppDispatch();
+
+  const filters = useAppSelector((state) => state.filters);
+
+  const [phrase, setPhrase] = useState('');
+  const [expiresAt] = useState('');
+  const [homeTimeline, setHomeTimeline] = useState(true);
+  const [publicTimeline, setPublicTimeline] = useState(false);
+  const [notifications, setNotifications] = useState(false);
+  const [conversations, setConversations] = useState(false);
+  const [irreversible, setIrreversible] = useState(false);
+  const [wholeWord, setWholeWord] = useState(true);
+
+  // const handleSelectChange = e => {
+  //   this.setState({ [e.target.name]: e.target.value });
+  // };
+
+  const handleAddNew: React.FormEventHandler = e => {
+    e.preventDefault();
+    const context = [];
+
+    if (homeTimeline) {
+      context.push('home');
+    }
+    if (publicTimeline) {
+      context.push('public');
+    }
+    if (notifications) {
+      context.push('notifications');
+    }
+    if (conversations) {
+      context.push('thread');
+    }
+
+    dispatch(createFilter(intl, phrase, expiresAt, context, wholeWord, irreversible)).then(() => {
+      return dispatch(fetchFilters());
+    }).catch(error => {
+      dispatch(snackbar.error(intl.formatMessage(messages.create_error)));
+    });
+  };
+
+  const handleFilterDelete: React.MouseEventHandler<HTMLDivElement> = e => {
+    dispatch(deleteFilter(intl, e.currentTarget.dataset.value)).then(() => {
+      return dispatch(fetchFilters());
+    }).catch(() => {
+      dispatch(snackbar.error(intl.formatMessage(messages.delete_error)));
+    });
+  };
+
+  useEffect(() => {
+    dispatch(fetchFilters());
+  }, []);
+
+  const emptyMessage = <FormattedMessage id='empty_column.filters' defaultMessage="You haven't created any muted words yet." />;
+
+  return (
+    <Column className='filter-settings-panel' label={intl.formatMessage(messages.heading)}>
+      <CardHeader>
+        <CardTitle title={intl.formatMessage(messages.subheading_add_new)} />
+      </CardHeader>
+      <Form onSubmit={handleAddNew}>
+        <FormGroup labelText={intl.formatMessage(messages.keyword)}>
+          <Input
+            required
+            type='text'
+            name='phrase'
+            onChange={({ target }) => setPhrase(target.value)}
+          />
+        </FormGroup>
+        {/* <FormGroup labelText={intl.formatMessage(messages.expires)} hintText={intl.formatMessage(messages.expires_hint)}>
+          <SelectDropdown
+            items={expirations}
+            defaultValue={expirations.never}
+            onChange={this.handleSelectChange}
+          />
+        </FormGroup> */}
+
+        <FieldsGroup>
+          <Text tag='label'>
+            <FormattedMessage id='filters.context_header' defaultMessage='Filter contexts' />
+          </Text>
+          <Text theme='muted' size='xs'>
+            <FormattedMessage id='filters.context_hint' defaultMessage='One or multiple contexts where the filter should apply' />
+          </Text>
+          <div className='two-col'>
+            <Checkbox
+              label={intl.formatMessage(messages.home_timeline)}
+              name='home_timeline'
+              checked={homeTimeline}
+              onChange={({ target }) => setHomeTimeline(target.checked)}
+            />
+            <Checkbox
+              label={intl.formatMessage(messages.public_timeline)}
+              name='public_timeline'
+              checked={publicTimeline}
+              onChange={({ target }) => setPublicTimeline(target.checked)}
+            />
+            <Checkbox
+              label={intl.formatMessage(messages.notifications)}
+              name='notifications'
+              checked={notifications}
+              onChange={({ target }) => setNotifications(target.checked)}
+            />
+            <Checkbox
+              label={intl.formatMessage(messages.conversations)}
+              name='conversations'
+              checked={conversations}
+              onChange={({ target }) => setConversations(target.checked)}
+            />
+          </div>
+
+        </FieldsGroup>
+
+        <FieldsGroup>
+          <Checkbox
+            label={intl.formatMessage(messages.drop_header)}
+            hint={intl.formatMessage(messages.drop_hint)}
+            name='irreversible'
+            checked={irreversible}
+            onChange={({ target }) => setIrreversible(target.checked)}
+          />
+          <Checkbox
+            label={intl.formatMessage(messages.whole_word_header)}
+            hint={intl.formatMessage(messages.whole_word_hint)}
+            name='whole_word'
+            checked={wholeWord}
+            onChange={({ target }) => setWholeWord(target.checked)}
+          />
+        </FieldsGroup>
+
+        <FormActions>
+          <Button type='submit' theme='primary'>{intl.formatMessage(messages.add_new)}</Button>
+        </FormActions>
+      </Form>
+
+      <CardHeader>
+        <CardTitle title={intl.formatMessage(messages.subheading_filters)} />
+      </CardHeader>
+
+      <ScrollableList
+        scrollKey='filters'
+        emptyMessage={emptyMessage}
+      >
+        {filters.map((filter, i) => (
+          <div key={i} className='filter__container'>
+            <div className='filter__details'>
+              <div className='filter__phrase'>
+                <span className='filter__list-label'><FormattedMessage id='filters.filters_list_phrase_label' defaultMessage='Keyword or phrase:' /></span>
+                <span className='filter__list-value'>{filter.phrase}</span>
+              </div>
+              <div className='filter__contexts'>
+                <span className='filter__list-label'><FormattedMessage id='filters.filters_list_context_label' defaultMessage='Filter contexts:' /></span>
+                <span className='filter__list-value'>
+                  {filter.context.map((context, i) => (
+                    <span key={i} className='context'>{context}</span>
+                  ))}
+                </span>
+              </div>
+              <div className='filter__details'>
+                <span className='filter__list-label'><FormattedMessage id='filters.filters_list_details_label' defaultMessage='Filter settings:' /></span>
+                <span className='filter__list-value'>
+                  {filter.irreversible ?
+                    <span><FormattedMessage id='filters.filters_list_drop' defaultMessage='Drop' /></span> :
+                    <span><FormattedMessage id='filters.filters_list_hide' defaultMessage='Hide' /></span>
+                  }
+                  {filter.whole_word &&
+                    <span><FormattedMessage id='filters.filters_list_whole-word' defaultMessage='Whole word' /></span>
+                  }
+                </span>
+              </div>
+            </div>
+            <div className='filter__delete' role='button' tabIndex={0} onClick={handleFilterDelete} data-value={filter.id} aria-label={intl.formatMessage(messages.delete)}>
+              <Icon className='filter__delete-icon' id='times' size={40} />
+              <span className='filter__delete-label'><FormattedMessage id='filters.filters_list_delete' defaultMessage='Delete' /></span>
+            </div>
+          </div>
+        ))}
+      </ScrollableList>
+    </Column>
+  );
+};
+
+export default Filters;
diff --git a/app/soapbox/features/scheduled_statuses/components/scheduled_status.tsx b/app/soapbox/features/scheduled_statuses/components/scheduled_status.tsx
index 451529a32..15a8e1ed9 100644
--- a/app/soapbox/features/scheduled_statuses/components/scheduled_status.tsx
+++ b/app/soapbox/features/scheduled_statuses/components/scheduled_status.tsx
@@ -13,7 +13,7 @@ import { buildStatus } from '../builder';
 
 import ScheduledStatusActionBar from './scheduled_status_action_bar';
 
-import type { Account as AccountEntity, Status as StatusEntity } from 'soapbox/types/entities';
+import type { Account as AccountEntity, Poll as PollEntity, Status as StatusEntity } from 'soapbox/types/entities';
 
 interface IScheduledStatus {
   statusId: string,
@@ -55,7 +55,7 @@ const ScheduledStatus: React.FC<IScheduledStatus> = ({ statusId, ...other }) =>
           />
         )}
 
-        {status.poll && <PollPreview poll={status.poll} />}
+        {status.poll && <PollPreview poll={status.poll as PollEntity} />}
 
         <ScheduledStatusActionBar status={status} {...other} />
       </div>
diff --git a/app/soapbox/features/ui/components/__tests__/compose-button.test.js b/app/soapbox/features/ui/components/__tests__/compose-button.test.tsx
similarity index 100%
rename from app/soapbox/features/ui/components/__tests__/compose-button.test.js
rename to app/soapbox/features/ui/components/__tests__/compose-button.test.tsx
diff --git a/app/soapbox/features/ui/components/boost_modal.js b/app/soapbox/features/ui/components/boost_modal.js
deleted file mode 100644
index faf648b12..000000000
--- a/app/soapbox/features/ui/components/boost_modal.js
+++ /dev/null
@@ -1,70 +0,0 @@
-import PropTypes from 'prop-types';
-import React from 'react';
-import ImmutablePropTypes from 'react-immutable-proptypes';
-import ImmutablePureComponent from 'react-immutable-pure-component';
-import { defineMessages, injectIntl, FormattedMessage } from 'react-intl';
-import { withRouter } from 'react-router-dom';
-
-import Icon from 'soapbox/components/icon';
-import { Modal, Stack, Text } from 'soapbox/components/ui';
-import ReplyIndicator from 'soapbox/features/compose/components/reply_indicator';
-
-const messages = defineMessages({
-  cancel_reblog: { id: 'status.cancel_reblog_private', defaultMessage: 'Un-repost' },
-  reblog: { id: 'status.reblog', defaultMessage: 'Repost' },
-});
-
-export default @injectIntl @withRouter
-class BoostModal extends ImmutablePureComponent {
-
-  static propTypes = {
-    status: ImmutablePropTypes.record.isRequired,
-    onReblog: PropTypes.func.isRequired,
-    onClose: PropTypes.func.isRequired,
-    intl: PropTypes.object.isRequired,
-    history: PropTypes.object,
-  };
-
-  handleReblog = () => {
-    this.props.onReblog(this.props.status);
-    this.props.onClose();
-  }
-
-  handleAccountClick = (e) => {
-    if (e.button === 0 && !(e.ctrlKey || e.metaKey)) {
-      e.preventDefault();
-      this.props.onClose();
-      this.props.history.push(`/@${this.props.status.getIn(['account', 'acct'])}`);
-    }
-  }
-
-  handleStatusClick = (e) => {
-    if (e.button === 0 && !(e.ctrlKey || e.metaKey)) {
-      e.preventDefault();
-      this.props.onClose();
-      this.props.history.push(`/@${this.props.status.getIn(['account', 'acct'])}/posts/${this.props.status.get('url')}`);
-    }
-  }
-
-  render() {
-    const { status, intl } = this.props;
-    const buttonText = status.get('reblogged') ? messages.cancel_reblog : messages.reblog;
-
-    return (
-      <Modal
-        title='Repost?'
-        confirmationAction={this.handleReblog}
-        confirmationText={intl.formatMessage(buttonText)}
-      >
-        <Stack space={4}>
-          <ReplyIndicator status={status} hideActions />
-
-          <Text>
-            <FormattedMessage id='boost_modal.combo' defaultMessage='You can press {combo} to skip this next time' values={{ combo: <span>Shift + <Icon id='retweet' /></span> }} />
-          </Text>
-        </Stack>
-      </Modal>
-    );
-  }
-
-}
diff --git a/app/soapbox/features/ui/components/boost_modal.tsx b/app/soapbox/features/ui/components/boost_modal.tsx
new file mode 100644
index 000000000..1dcaaf63d
--- /dev/null
+++ b/app/soapbox/features/ui/components/boost_modal.tsx
@@ -0,0 +1,48 @@
+import React from 'react';
+import { defineMessages, FormattedMessage, useIntl } from 'react-intl';
+
+import Icon from 'soapbox/components/icon';
+import { Modal, Stack, Text } from 'soapbox/components/ui';
+import ReplyIndicator from 'soapbox/features/compose/components/reply_indicator';
+
+import type { Status as StatusEntity } from 'soapbox/types/entities';
+
+const messages = defineMessages({
+  cancel_reblog: { id: 'status.cancel_reblog_private', defaultMessage: 'Un-repost' },
+  reblog: { id: 'status.reblog', defaultMessage: 'Repost' },
+});
+
+interface IBoostModal {
+  status: StatusEntity,
+  onReblog: (status: StatusEntity) => void,
+  onClose: () => void,
+}
+
+const BoostModal: React.FC<IBoostModal> = ({ status, onReblog, onClose }) => {
+  const intl = useIntl();
+
+  const handleReblog = () => {
+    onReblog(status);
+    onClose();
+  };
+
+  const buttonText = status.reblogged ? messages.cancel_reblog : messages.reblog;
+
+  return (
+    <Modal
+      title='Repost?'
+      confirmationAction={handleReblog}
+      confirmationText={intl.formatMessage(buttonText)}
+    >
+      <Stack space={4}>
+        <ReplyIndicator status={status} hideActions />
+
+        <Text>
+          <FormattedMessage id='boost_modal.combo' defaultMessage='You can press {combo} to skip this next time' values={{ combo: <span>Shift + <Icon id='retweet' /></span> }} />
+        </Text>
+      </Stack>
+    </Modal>
+  );
+};
+
+export default BoostModal;
diff --git a/app/soapbox/features/ui/components/confirmation_modal.js b/app/soapbox/features/ui/components/confirmation_modal.js
deleted file mode 100644
index e205f6ce1..000000000
--- a/app/soapbox/features/ui/components/confirmation_modal.js
+++ /dev/null
@@ -1,84 +0,0 @@
-import PropTypes from 'prop-types';
-import React from 'react';
-import { injectIntl, FormattedMessage } from 'react-intl';
-
-import { Modal } from 'soapbox/components/ui';
-import { SimpleForm, FieldsGroup, Checkbox } from 'soapbox/features/forms';
-
-export default @injectIntl
-class ConfirmationModal extends React.PureComponent {
-
-  static propTypes = {
-    heading: PropTypes.node,
-    icon: PropTypes.node,
-    message: PropTypes.node.isRequired,
-    confirm: PropTypes.node.isRequired,
-    onClose: PropTypes.func.isRequired,
-    onConfirm: PropTypes.func.isRequired,
-    secondary: PropTypes.string,
-    onSecondary: PropTypes.func,
-    intl: PropTypes.object.isRequired,
-    onCancel: PropTypes.func,
-    checkbox: PropTypes.node,
-  };
-
-  state = {
-    checked: false,
-  }
-
-  handleClick = () => {
-    this.props.onClose('CONFIRM');
-    this.props.onConfirm();
-  }
-
-  handleSecondary = () => {
-    this.props.onClose('CONFIRM');
-    this.props.onSecondary();
-  }
-
-  handleCancel = () => {
-    const { onClose, onCancel } = this.props;
-    onClose('CONFIRM');
-    if (onCancel) onCancel();
-  }
-
-  handleCheckboxChange = e => {
-    this.setState({ checked: e.target.checked });
-  }
-
-  render() {
-    const { heading, message, confirm, secondary, checkbox } = this.props;
-    const { checked } = this.state;
-
-    return (
-      <Modal
-        title={heading}
-        confirmationAction={this.handleClick}
-        confirmationText={confirm}
-        confirmationDisabled={checkbox && !checked}
-        confirmationTheme='danger'
-        cancelText={<FormattedMessage id='confirmation_modal.cancel' defaultMessage='Cancel' />}
-        cancelAction={this.handleCancel}
-        secondaryText={secondary}
-        secondaryAction={this.props.onSecondary && this.handleSecondary}
-      >
-        <p className='text-gray-600 dark:text-gray-300'>{message}</p>
-
-        <div className='mt-2'>
-          {checkbox && <div className='confirmation-modal__checkbox'>
-            <SimpleForm>
-              <FieldsGroup>
-                <Checkbox
-                  onChange={this.handleCheckboxChange}
-                  label={checkbox}
-                  checked={checked}
-                />
-              </FieldsGroup>
-            </SimpleForm>
-          </div>}
-        </div>
-      </Modal>
-    );
-  }
-
-}
diff --git a/app/soapbox/features/ui/components/confirmation_modal.tsx b/app/soapbox/features/ui/components/confirmation_modal.tsx
new file mode 100644
index 000000000..8b4d790e6
--- /dev/null
+++ b/app/soapbox/features/ui/components/confirmation_modal.tsx
@@ -0,0 +1,82 @@
+import React, { useState } from 'react';
+import { FormattedMessage } from 'react-intl';
+
+import { Modal } from 'soapbox/components/ui';
+import { SimpleForm, FieldsGroup, Checkbox } from 'soapbox/features/forms';
+
+interface IConfirmationModal {
+  heading: React.ReactNode,
+  message: React.ReactNode,
+  confirm: React.ReactNode,
+  onClose: (type: string) => void,
+  onConfirm: () => void,
+  secondary: React.ReactNode,
+  onSecondary?: () => void,
+  onCancel: () => void,
+  checkbox?: JSX.Element,
+}
+
+const ConfirmationModal: React.FC<IConfirmationModal> = ({
+  heading,
+  message,
+  confirm,
+  onClose,
+  onConfirm,
+  secondary,
+  onSecondary,
+  onCancel,
+  checkbox,
+}) => {
+  const [checked, setChecked] = useState(false);
+
+  const handleClick = () => {
+    onClose('CONFIRM');
+    onConfirm();
+  };
+
+  const handleSecondary = () => {
+    onClose('CONFIRM');
+    onSecondary!();
+  };
+
+  const handleCancel = () => {
+    onClose('CONFIRM');
+    if (onCancel) onCancel();
+  };
+
+  const handleCheckboxChange: React.ChangeEventHandler<HTMLInputElement> = e => {
+    setChecked(e.target.checked);
+  };
+
+  return (
+    <Modal
+      title={heading}
+      confirmationAction={handleClick}
+      confirmationText={confirm}
+      confirmationDisabled={checkbox && !checked}
+      confirmationTheme='danger'
+      cancelText={<FormattedMessage id='confirmation_modal.cancel' defaultMessage='Cancel' />}
+      cancelAction={handleCancel}
+      secondaryText={secondary}
+      secondaryAction={onSecondary && handleSecondary}
+    >
+      <p className='text-gray-600 dark:text-gray-300'>{message}</p>
+
+      <div className='mt-2'>
+        {checkbox && <div className='confirmation-modal__checkbox'>
+          <SimpleForm>
+            <FieldsGroup>
+              <Checkbox
+                onChange={handleCheckboxChange}
+                label={checkbox}
+                checked={checked}
+              />
+            </FieldsGroup>
+          </SimpleForm>
+        </div>}
+      </div>
+    </Modal>
+  );
+};
+
+export default ConfirmationModal;
diff --git a/app/soapbox/features/ui/components/crypto_donate_modal.js b/app/soapbox/features/ui/components/crypto_donate_modal.js
deleted file mode 100644
index 73d8b25db..000000000
--- a/app/soapbox/features/ui/components/crypto_donate_modal.js
+++ /dev/null
@@ -1,22 +0,0 @@
-import PropTypes from 'prop-types';
-import React from 'react';
-
-import DetailedCryptoAddress from 'soapbox/features/crypto_donate/components/detailed_crypto_address';
-
-export default class CryptoDonateModal extends React.PureComponent {
-
-  static propTypes = {
-    address: PropTypes.string.isRequired,
-    ticker: PropTypes.string.isRequired,
-    note: PropTypes.string,
-  };
-
-  render() {
-    return (
-      <div className='modal-root__modal crypto-donate-modal'>
-        <DetailedCryptoAddress {...this.props} />
-      </div>
-    );
-  }
-
-}
diff --git a/app/soapbox/features/ui/components/crypto_donate_modal.tsx b/app/soapbox/features/ui/components/crypto_donate_modal.tsx
new file mode 100644
index 000000000..805012d3a
--- /dev/null
+++ b/app/soapbox/features/ui/components/crypto_donate_modal.tsx
@@ -0,0 +1,16 @@
+import React from 'react';
+
+import DetailedCryptoAddress from 'soapbox/features/crypto_donate/components/detailed_crypto_address';
+
+import type { ICryptoAddress } from '../../crypto_donate/components/crypto_address';
+
+const CryptoDonateModal: React.FC<ICryptoAddress> = (props) => {
+  return (
+    <div className='modal-root__modal crypto-donate-modal'>
+      <DetailedCryptoAddress {...props} />
+    </div>
+  );
+
+};
+
+export default CryptoDonateModal;
diff --git a/app/soapbox/features/ui/components/list_panel.js b/app/soapbox/features/ui/components/list_panel.js
deleted file mode 100644
index 4ca1a78ff..000000000
--- a/app/soapbox/features/ui/components/list_panel.js
+++ /dev/null
@@ -1,56 +0,0 @@
-import PropTypes from 'prop-types';
-import React from 'react';
-import ImmutablePropTypes from 'react-immutable-proptypes';
-import ImmutablePureComponent from 'react-immutable-pure-component';
-import { connect } from 'react-redux';
-import { NavLink, withRouter } from 'react-router-dom';
-import { createSelector } from 'reselect';
-
-import { fetchLists } from 'soapbox/actions/lists';
-import Icon from 'soapbox/components/icon';
-
-const getOrderedLists = createSelector([state => state.get('lists')], lists => {
-  if (!lists) {
-    return lists;
-  }
-
-  return lists.toList().filter(item => !!item).sort((a, b) => a.get('title').localeCompare(b.get('title'))).take(4);
-});
-
-const mapStateToProps = state => ({
-  lists: getOrderedLists(state),
-});
-
-export default @withRouter
-@connect(mapStateToProps)
-class ListPanel extends ImmutablePureComponent {
-
-  static propTypes = {
-    dispatch: PropTypes.func.isRequired,
-    lists: ImmutablePropTypes.list,
-  };
-
-  componentDidMount() {
-    const { dispatch } = this.props;
-    dispatch(fetchLists());
-  }
-
-  render() {
-    const { lists } = this.props;
-
-    if (!lists || lists.isEmpty()) {
-      return null;
-    }
-
-    return (
-      <div>
-        <hr />
-
-        {lists.map(list => (
-          <NavLink key={list.get('id')} className='column-link column-link--transparent' strict to={`/list/${list.get('id')}`}><Icon className='column-link__icon' id='list-ul' fixedWidth />{list.get('title')}</NavLink>
-        ))}
-      </div>
-    );
-  }
-
-}
diff --git a/app/soapbox/features/ui/components/list_panel.tsx b/app/soapbox/features/ui/components/list_panel.tsx
new file mode 100644
index 000000000..8160217e9
--- /dev/null
+++ b/app/soapbox/features/ui/components/list_panel.tsx
@@ -0,0 +1,45 @@
+import React, { useEffect } from 'react';
+import { NavLink } from 'react-router-dom';
+import { createSelector } from 'reselect';
+
+import { fetchLists } from 'soapbox/actions/lists';
+import Icon from 'soapbox/components/icon';
+import { useAppDispatch, useAppSelector } from 'soapbox/hooks';
+
+import type { List as ImmutableList } from 'immutable';
+import type { RootState } from 'soapbox/store';
+import type { List as ListEntity } from 'soapbox/types/entities';
+
+const getOrderedLists = createSelector([(state: RootState) => state.lists], lists => {
+  if (!lists) {
+    return lists;
+  }
+
+  return lists.toList().filter(item => !!item).sort((a, b) => (a as ListEntity).title.localeCompare((b as ListEntity).title)).take(4) as ImmutableList<ListEntity>;
+});
+
+const ListPanel = () => {
+  const dispatch = useAppDispatch();
+
+  const lists = useAppSelector((state) => getOrderedLists(state));
+
+  useEffect(() => {
+    dispatch(fetchLists());
+  }, []);
+
+  if (!lists || lists.isEmpty()) {
+    return null;
+  }
+
+  return (
+    <div>
+      <hr />
+
+      {lists.map(list => (
+        <NavLink key={list.id} className='column-link column-link--transparent' strict to={`/list/${list.id}`}><Icon className='column-link__icon' id='list-ul' fixedWidth />{list.title}</NavLink>
+      ))}
+    </div>
+  );
+};
+
+export default ListPanel;
diff --git a/app/soapbox/features/ui/components/mute_modal.js b/app/soapbox/features/ui/components/mute_modal.js
deleted file mode 100644
index 0714b5cfb..000000000
--- a/app/soapbox/features/ui/components/mute_modal.js
+++ /dev/null
@@ -1,108 +0,0 @@
-import PropTypes from 'prop-types';
-import React from 'react';
-import { injectIntl, FormattedMessage } from 'react-intl';
-import { connect } from 'react-redux';
-import Toggle from 'react-toggle';
-
-import { muteAccount } from 'soapbox/actions/accounts';
-import { closeModal } from 'soapbox/actions/modals';
-import { toggleHideNotifications } from 'soapbox/actions/mutes';
-import { Modal, HStack, Stack, Text } from 'soapbox/components/ui';
-
-const mapStateToProps = state => {
-  return {
-    isSubmitting: state.reports.new.isSubmitting,
-    account: state.getIn(['mutes', 'new', 'account']),
-    notifications: state.getIn(['mutes', 'new', 'notifications']),
-  };
-};
-
-const mapDispatchToProps = dispatch => {
-  return {
-    onConfirm(account, notifications) {
-      dispatch(muteAccount(account.get('id'), notifications));
-    },
-
-    onClose() {
-      dispatch(closeModal());
-    },
-
-    onToggleNotifications() {
-      dispatch(toggleHideNotifications());
-    },
-  };
-};
-
-export default @connect(mapStateToProps, mapDispatchToProps)
-@injectIntl
-class MuteModal extends React.PureComponent {
-
-  static propTypes = {
-    isSubmitting: PropTypes.bool.isRequired,
-    account: PropTypes.object.isRequired,
-    notifications: PropTypes.bool.isRequired,
-    onClose: PropTypes.func.isRequired,
-    onConfirm: PropTypes.func.isRequired,
-    onToggleNotifications: PropTypes.func.isRequired,
-    intl: PropTypes.object.isRequired,
-  };
-
-  handleClick = () => {
-    this.props.onClose();
-    this.props.onConfirm(this.props.account, this.props.notifications);
-  }
-
-  handleCancel = () => {
-    this.props.onClose();
-  }
-
-  toggleNotifications = () => {
-    this.props.onToggleNotifications();
-  }
-
-  render() {
-    const { account, notifications } = this.props;
-
-    return (
-      <Modal
-        title={
-          <FormattedMessage
-            id='confirmations.mute.heading'
-            defaultMessage='Mute @{name}'
-            values={{ name: account.get('acct') }}
-          />
-        }
-        onClose={this.handleCancel}
-        confirmationAction={this.handleClick}
-        confirmationText={<FormattedMessage id='confirmations.mute.confirm' defaultMessage='Mute' />}
-        cancelText={<FormattedMessage id='confirmation_modal.cancel' defaultMessage='Cancel' />}
-        cancelAction={this.handleCancel}
-      >
-        <Stack space={4}>
-          <Text>
-            <FormattedMessage
-              id='confirmations.mute.message'
-              defaultMessage='Are you sure you want to mute {name}?'
-              values={{ name: <strong>@{account.get('acct')}</strong> }}
-            />
-          </Text>
-
-          <label>
-            <HStack alignItems='center' space={2}>
-              <Text tag='span'>
-                <FormattedMessage id='mute_modal.hide_notifications' defaultMessage='Hide notifications from this user?' />
-              </Text>
-
-              <Toggle
-                checked={notifications}
-                onChange={this.toggleNotifications}
-                icons={false}
-              />
-            </HStack>
-          </label>
-        </Stack>
-      </Modal>
-    );
-  }
-
-}
diff --git a/app/soapbox/features/ui/components/mute_modal.tsx b/app/soapbox/features/ui/components/mute_modal.tsx
new file mode 100644
index 000000000..b2b5e25b2
--- /dev/null
+++ b/app/soapbox/features/ui/components/mute_modal.tsx
@@ -0,0 +1,77 @@
+import React from 'react';
+import { FormattedMessage } from 'react-intl';
+import Toggle from 'react-toggle';
+
+import { muteAccount } from 'soapbox/actions/accounts';
+import { closeModal } from 'soapbox/actions/modals';
+import { toggleHideNotifications } from 'soapbox/actions/mutes';
+import { Modal, HStack, Stack, Text } from 'soapbox/components/ui';
+import { useAppDispatch, useAppSelector } from 'soapbox/hooks';
+import { makeGetAccount } from 'soapbox/selectors';
+
+const getAccount = makeGetAccount();
+
+const MuteModal = () => {
+  const dispatch = useAppDispatch();
+
+  const account = useAppSelector((state) => getAccount(state, state.mutes.new.accountId!));
+  const notifications = useAppSelector((state) => state.mutes.new.notifications);
+
+  if (!account) return null;
+
+  const handleClick = () => {
+    dispatch(closeModal());
+    dispatch(muteAccount(account.id, notifications));
+  };
+
+  const handleCancel = () => {
+    dispatch(closeModal());
+  };
+
+  const toggleNotifications = () => {
+    dispatch(toggleHideNotifications());
+  };
+
+  return (
+    <Modal
+      title={
+        <FormattedMessage
+          id='confirmations.mute.heading'
+          defaultMessage='Mute @{name}'
+          values={{ name: account.acct }}
+        />
+      }
+      onClose={handleCancel}
+      confirmationAction={handleClick}
+      confirmationText={<FormattedMessage id='confirmations.mute.confirm' defaultMessage='Mute' />}
+      cancelText={<FormattedMessage id='confirmation_modal.cancel' defaultMessage='Cancel' />}
+      cancelAction={handleCancel}
+    >
+      <Stack space={4}>
+        <Text>
+          <FormattedMessage
+            id='confirmations.mute.message'
+            defaultMessage='Are you sure you want to mute {name}?'
+            values={{ name: <strong>@{account.acct}</strong> }}
+          />
+        </Text>
+
+        <label>
+          <HStack alignItems='center' space={2}>
+            <Text tag='span'>
+              <FormattedMessage id='mute_modal.hide_notifications' defaultMessage='Hide notifications from this user?' />
+            </Text>
+
+            <Toggle
+              checked={notifications}
+              onChange={toggleNotifications}
+              icons={false}
+            />
+          </HStack>
+        </label>
+      </Stack>
+    </Modal>
+  );
+};
+
+export default MuteModal;
diff --git a/app/soapbox/features/ui/components/pending_status.tsx b/app/soapbox/features/ui/components/pending_status.tsx
index 03853008c..9e7bfaef1 100644
--- a/app/soapbox/features/ui/components/pending_status.tsx
+++ b/app/soapbox/features/ui/components/pending_status.tsx
@@ -14,7 +14,7 @@ import { buildStatus } from '../util/pending_status_builder';
 
 import PollPreview from './poll_preview';
 
-import type { Account as AccountEntity, Status as StatusEntity } from 'soapbox/types/entities';
+import type { Account as AccountEntity, Poll as PollEntity, Status as StatusEntity } from 'soapbox/types/entities';
 
 const shouldHaveCard = (pendingStatus: StatusEntity) => {
   return Boolean(pendingStatus.content.match(/https?:\/\/\S*/));
@@ -81,7 +81,7 @@ const PendingStatus: React.FC<IPendingStatus> = ({ idempotencyKey, className, mu
 
             <PendingStatusMedia status={status} />
 
-            {status.poll && <PollPreview poll={status.poll} />}
+            {status.poll && <PollPreview poll={status.poll as PollEntity} />}
 
             {status.quote && <QuotedStatus statusId={status.quote as string} />}
           </div>
diff --git a/app/soapbox/features/ui/components/poll_preview.js b/app/soapbox/features/ui/components/poll_preview.js
deleted file mode 100644
index 40766abe4..000000000
--- a/app/soapbox/features/ui/components/poll_preview.js
+++ /dev/null
@@ -1,50 +0,0 @@
-import classNames from 'classnames';
-import React from 'react';
-import ImmutablePropTypes from 'react-immutable-proptypes';
-import ImmutablePureComponent from 'react-immutable-pure-component';
-
-export default class PollPreview extends ImmutablePureComponent {
-
-  static propTypes = {
-    poll: ImmutablePropTypes.map,
-  };
-
-  renderOption(option) {
-    const { poll } = this.props;
-    const showResults = poll.get('voted') || poll.get('expired');
-
-    return (
-      <li key={option}>
-        <label className={classNames('poll__text', { selectable: !showResults })}>
-          <input
-            name='vote-options'
-            type={poll.get('multiple') ? 'checkbox' : 'radio'}
-            onChange={this.handleOptionChange}
-            disabled
-          />
-
-          <span className={classNames('poll__input', { checkbox: poll.get('multiple') })} />
-
-          <span dangerouslySetInnerHTML={{ __html: option }} />
-        </label>
-      </li>
-    );
-  }
-
-  render() {
-    const { poll } = this.props;
-
-    if (!poll) {
-      return null;
-    }
-
-    return (
-      <div className='poll'>
-        <ul>
-          {poll.get('options').map((option, i) => this.renderOption(option, i))}
-        </ul>
-      </div>
-    );
-  }
-
-}
diff --git a/app/soapbox/features/ui/components/poll_preview.tsx b/app/soapbox/features/ui/components/poll_preview.tsx
new file mode 100644
index 000000000..3d3b48408
--- /dev/null
+++ b/app/soapbox/features/ui/components/poll_preview.tsx
@@ -0,0 +1,44 @@
+import classNames from 'classnames';
+import React from 'react';
+
+import { Poll as PollEntity, PollOption as PollOptionEntity } from 'soapbox/types/entities';
+
+interface IPollPreview {
+  poll: PollEntity,
+}
+
+const PollPreview: React.FC<IPollPreview> = ({ poll }) => {
+  const renderOption = (option: PollOptionEntity, index: number) => {
+    const showResults = poll.voted || poll.expired;
+
+    return (
+      <li key={index}>
+        <label className={classNames('poll__text', { selectable: !showResults })}>
+          <input
+            name='vote-options'
+            type={poll.multiple ? 'checkbox' : 'radio'}
+            disabled
+          />
+
+          <span className={classNames('poll__input', { checkbox: poll.multiple })} />
+
+          <span dangerouslySetInnerHTML={{ __html: option.title_emojified }} />
+        </label>
+      </li>
+    );
+  };
+
+  if (!poll) {
+    return null;
+  }
+
+  return (
+    <div className='poll'>
+      <ul>
+        {poll.options.map((option, i) => renderOption(option, i))}
+      </ul>
+    </div>
+  );
+};
+
+export default PollPreview;
diff --git a/app/soapbox/features/verification/steps/__tests__/age-verification.test.js b/app/soapbox/features/verification/steps/__tests__/age-verification.test.tsx
similarity index 100%
rename from app/soapbox/features/verification/steps/__tests__/age-verification.test.js
rename to app/soapbox/features/verification/steps/__tests__/age-verification.test.tsx
diff --git a/app/soapbox/features/verification/steps/__tests__/email-verification.test.js b/app/soapbox/features/verification/steps/__tests__/email-verification.test.tsx
similarity index 100%
rename from app/soapbox/features/verification/steps/__tests__/email-verification.test.js
rename to app/soapbox/features/verification/steps/__tests__/email-verification.test.tsx
diff --git a/app/soapbox/features/verification/steps/__tests__/sms-verification.test.js b/app/soapbox/features/verification/steps/__tests__/sms-verification.test.tsx
similarity index 100%
rename from app/soapbox/features/verification/steps/__tests__/sms-verification.test.js
rename to app/soapbox/features/verification/steps/__tests__/sms-verification.test.tsx
diff --git a/app/soapbox/normalizers/__tests__/account-test.js b/app/soapbox/normalizers/__tests__/account.test.ts
similarity index 100%
rename from app/soapbox/normalizers/__tests__/account-test.js
rename to app/soapbox/normalizers/__tests__/account.test.ts
diff --git a/app/soapbox/normalizers/__tests__/attachment-test.js b/app/soapbox/normalizers/__tests__/attachment.test.ts
similarity index 100%
rename from app/soapbox/normalizers/__tests__/attachment-test.js
rename to app/soapbox/normalizers/__tests__/attachment.test.ts
diff --git a/app/soapbox/normalizers/__tests__/card-test.js b/app/soapbox/normalizers/__tests__/card.test.ts
similarity index 100%
rename from app/soapbox/normalizers/__tests__/card-test.js
rename to app/soapbox/normalizers/__tests__/card.test.ts
diff --git a/app/soapbox/normalizers/__tests__/mention-test.js b/app/soapbox/normalizers/__tests__/mention.test.ts
similarity index 100%
rename from app/soapbox/normalizers/__tests__/mention-test.js
rename to app/soapbox/normalizers/__tests__/mention.test.ts
diff --git a/app/soapbox/normalizers/__tests__/notification-test.js b/app/soapbox/normalizers/__tests__/notification.test.ts
similarity index 100%
rename from app/soapbox/normalizers/__tests__/notification-test.js
rename to app/soapbox/normalizers/__tests__/notification.test.ts
diff --git a/app/soapbox/normalizers/__tests__/poll-test.js b/app/soapbox/normalizers/__tests__/poll.test.ts
similarity index 100%
rename from app/soapbox/normalizers/__tests__/poll-test.js
rename to app/soapbox/normalizers/__tests__/poll.test.ts
diff --git a/app/soapbox/normalizers/__tests__/status-test.js b/app/soapbox/normalizers/__tests__/status.test.ts
similarity index 100%
rename from app/soapbox/normalizers/__tests__/status-test.js
rename to app/soapbox/normalizers/__tests__/status.test.ts
diff --git a/app/soapbox/normalizers/filter.ts b/app/soapbox/normalizers/filter.ts
new file mode 100644
index 000000000..5f2f57960
--- /dev/null
+++ b/app/soapbox/normalizers/filter.ts
@@ -0,0 +1,22 @@
+/**
+ * Filter normalizer:
+ * Converts API filters into our internal format.
+ * @see {@link https://docs.joinmastodon.org/entities/filter/}
+ */
+import { List as ImmutableList, Map as ImmutableMap, Record as ImmutableRecord, fromJS } from 'immutable';
+
+// https://docs.joinmastodon.org/entities/filter/
+export const FilterRecord = ImmutableRecord({
+  id: '',
+  phrase: '',
+  context: ImmutableList<string>(),
+  whole_word: false,
+  expires_at: '',
+  irreversible: false,
+});
+
+export const normalizeFilter = (filter: Record<string, any>) => {
+  return FilterRecord(
+    ImmutableMap(fromJS(filter)),
+  );
+};
\ No newline at end of file
diff --git a/app/soapbox/normalizers/index.ts b/app/soapbox/normalizers/index.ts
index d660df0f2..b1b41e0d6 100644
--- a/app/soapbox/normalizers/index.ts
+++ b/app/soapbox/normalizers/index.ts
@@ -6,6 +6,7 @@ export { CardRecord, normalizeCard } from './card';
 export { ChatRecord, normalizeChat } from './chat';
 export { ChatMessageRecord, normalizeChatMessage } from './chat_message';
 export { EmojiRecord, normalizeEmoji } from './emoji';
+export { FilterRecord, normalizeFilter } from './filter';
 export { HistoryRecord, normalizeHistory } from './history';
 export { InstanceRecord, normalizeInstance } from './instance';
 export { ListRecord, normalizeList } from './list';
diff --git a/app/soapbox/normalizers/poll.ts b/app/soapbox/normalizers/poll.ts
index d2b1bf492..7b98d1354 100644
--- a/app/soapbox/normalizers/poll.ts
+++ b/app/soapbox/normalizers/poll.ts
@@ -47,8 +47,18 @@ const normalizeEmojis = (entity: ImmutableMap<string, any>) => {
   });
 };
 
-const normalizePollOption = (option: ImmutableMap<string, any>, emojis: ImmutableList<ImmutableMap<string, string>> = ImmutableList()) => {
+const normalizePollOption = (option: ImmutableMap<string, any> | string, emojis: ImmutableList<ImmutableMap<string, string>> = ImmutableList()) => {
   const emojiMap = makeEmojiMap(emojis);
+
+  if (typeof option === 'string') {
+    const titleEmojified = emojify(escapeTextContentForBrowser(option), emojiMap);
+
+    return PollOptionRecord({
+      title: option,
+      title_emojified: titleEmojified,
+    });
+  }
+
   const titleEmojified = emojify(escapeTextContentForBrowser(option.get('title')), emojiMap);
 
   return PollOptionRecord(
diff --git a/app/soapbox/normalizers/soapbox/__tests__/soapbox_config-test.js b/app/soapbox/normalizers/soapbox/__tests__/soapbox_config-test.ts
similarity index 100%
rename from app/soapbox/normalizers/soapbox/__tests__/soapbox_config-test.js
rename to app/soapbox/normalizers/soapbox/__tests__/soapbox_config-test.ts
diff --git a/app/soapbox/reducers/__tests__/accounts-test.js b/app/soapbox/reducers/__tests__/accounts.test.ts
similarity index 93%
rename from app/soapbox/reducers/__tests__/accounts-test.js
rename to app/soapbox/reducers/__tests__/accounts.test.ts
index 4b7915d32..647bb676a 100644
--- a/app/soapbox/reducers/__tests__/accounts-test.js
+++ b/app/soapbox/reducers/__tests__/accounts.test.ts
@@ -6,7 +6,7 @@ import reducer from '../accounts';
 
 describe('accounts reducer', () => {
   it('should return the initial state', () => {
-    expect(reducer(undefined, {})).toEqual(ImmutableMap());
+    expect(reducer(undefined, {} as any)).toEqual(ImmutableMap());
   });
 
   describe('ACCOUNT_IMPORT', () => {
diff --git a/app/soapbox/reducers/__tests__/accounts_counters-test.js b/app/soapbox/reducers/__tests__/accounts_counters.test.ts
similarity index 95%
rename from app/soapbox/reducers/__tests__/accounts_counters-test.js
rename to app/soapbox/reducers/__tests__/accounts_counters.test.ts
index ca1a279e0..114f28b54 100644
--- a/app/soapbox/reducers/__tests__/accounts_counters-test.js
+++ b/app/soapbox/reducers/__tests__/accounts_counters.test.ts
@@ -9,7 +9,7 @@ import reducer from '../accounts_counters';
 
 describe('accounts_counters reducer', () => {
   it('should return the initial state', () => {
-    expect(reducer(undefined, {})).toEqual(ImmutableMap());
+    expect(reducer(undefined, {} as any)).toEqual(ImmutableMap());
   });
 
   // it('should handle ACCOUNT_FOLLOW_SUCCESS', () => {
diff --git a/app/soapbox/reducers/__tests__/admin-test.js b/app/soapbox/reducers/__tests__/admin.test.ts
similarity index 84%
rename from app/soapbox/reducers/__tests__/admin-test.js
rename to app/soapbox/reducers/__tests__/admin.test.ts
index 43018c880..a83e11022 100644
--- a/app/soapbox/reducers/__tests__/admin-test.js
+++ b/app/soapbox/reducers/__tests__/admin.test.ts
@@ -4,7 +4,7 @@ import reducer from '../admin';
 
 describe('admin reducer', () => {
   it('should return the initial state', () => {
-    const result = reducer(undefined, {});
+    const result = reducer(undefined, {} as any);
     expect(ImmutableRecord.isRecord(result)).toBe(true);
     expect(result.needsReboot).toBe(false);
   });
diff --git a/app/soapbox/reducers/__tests__/alerts-test.js b/app/soapbox/reducers/__tests__/alerts.test.ts
similarity index 100%
rename from app/soapbox/reducers/__tests__/alerts-test.js
rename to app/soapbox/reducers/__tests__/alerts.test.ts
diff --git a/app/soapbox/reducers/__tests__/auth-test.js b/app/soapbox/reducers/__tests__/auth.test.ts
similarity index 100%
rename from app/soapbox/reducers/__tests__/auth-test.js
rename to app/soapbox/reducers/__tests__/auth.test.ts
diff --git a/app/soapbox/reducers/__tests__/compose-test.js b/app/soapbox/reducers/__tests__/compose.test.ts
similarity index 96%
rename from app/soapbox/reducers/__tests__/compose-test.js
rename to app/soapbox/reducers/__tests__/compose.test.ts
index 1c4e70948..42c276cf6 100644
--- a/app/soapbox/reducers/__tests__/compose-test.js
+++ b/app/soapbox/reducers/__tests__/compose.test.ts
@@ -1,4 +1,4 @@
-import { Map as ImmutableMap, fromJS } from 'immutable';
+import { List as ImmutableList, Map as ImmutableMap, fromJS } from 'immutable';
 
 import * as actions from 'soapbox/actions/compose';
 import { ME_FETCH_SUCCESS, ME_PATCH_SUCCESS } from 'soapbox/actions/me';
@@ -220,7 +220,7 @@ describe('compose reducer', () => {
   });
 
   it('should handle COMPOSE_SPOILERNESS_CHANGE on CW button click', () => {
-    const state = ImmutableMap({ spoiler_text: 'spoiler text', spoiler: true, media_attachments: { } });
+    const state = ImmutableMap({ spoiler_text: 'spoiler text', spoiler: true, media_attachments: ImmutableList() });
     const action = {
       type: actions.COMPOSE_SPOILERNESS_CHANGE,
     };
@@ -337,7 +337,7 @@ describe('compose reducer', () => {
   });
 
   it('should handle COMPOSE_UPLOAD_SUCCESS', () => {
-    const state = ImmutableMap({ media_attachments: [] });
+    const state = ImmutableMap({ media_attachments: ImmutableList() });
     const media = [
       {
         description: null,
@@ -385,19 +385,18 @@ describe('compose reducer', () => {
   });
 
   it('should handle COMPOSE_SUGGESTIONS_CLEAR', () => {
-    const state = ImmutableMap({ });
     const action = {
       type: actions.COMPOSE_SUGGESTIONS_CLEAR,
       suggestions: [],
       suggestion_token: 'aiekdns3',
     };
-    expect(reducer(state, action).toJS()).toMatchObject({
+    expect(reducer(undefined, action).toJS()).toMatchObject({
       suggestion_token: null,
     });
   });
 
   it('should handle COMPOSE_SUGGESTION_TAGS_UPDATE', () => {
-    const state = ImmutableMap({ tagHistory: [ 'hashtag' ] });
+    const state = ImmutableMap({ tagHistory: ImmutableList([ 'hashtag' ]) });
     const action = {
       type: actions.COMPOSE_SUGGESTION_TAGS_UPDATE,
       token: 'aaadken3',
@@ -410,12 +409,11 @@ describe('compose reducer', () => {
   });
 
   it('should handle COMPOSE_TAG_HISTORY_UPDATE', () => {
-    const state = ImmutableMap({ });
     const action = {
       type: actions.COMPOSE_TAG_HISTORY_UPDATE,
       tags: [ 'hashtag', 'hashtag2'],
     };
-    expect(reducer(state, action).toJS()).toMatchObject({
+    expect(reducer(undefined, action).toJS()).toMatchObject({
       tagHistory: [ 'hashtag', 'hashtag2' ],
     });
   });
@@ -450,11 +448,10 @@ describe('compose reducer', () => {
   });
 
   it('should handle COMPOSE_POLL_REMOVE', () => {
-    const state = ImmutableMap({ });
     const action = {
       type: actions.COMPOSE_POLL_REMOVE,
     };
-    expect(reducer(state, action).toJS()).toMatchObject({
+    expect(reducer(undefined, action).toJS()).toMatchObject({
       poll: null,
     });
   });
diff --git a/app/soapbox/reducers/__tests__/contexts-test.js b/app/soapbox/reducers/__tests__/contexts.test.ts
similarity index 91%
rename from app/soapbox/reducers/__tests__/contexts-test.js
rename to app/soapbox/reducers/__tests__/contexts.test.ts
index d5270f0d8..901763091 100644
--- a/app/soapbox/reducers/__tests__/contexts-test.js
+++ b/app/soapbox/reducers/__tests__/contexts.test.ts
@@ -13,7 +13,7 @@ import reducer, { ReducerRecord } from '../contexts';
 
 describe('contexts reducer', () => {
   it('should return the initial state', () => {
-    expect(reducer(undefined, {})).toEqual(ReducerRecord({
+    expect(reducer(undefined, {} as any)).toEqual(ReducerRecord({
       inReplyTos: ImmutableMap(),
       replies: ImmutableMap(),
     }));
@@ -97,18 +97,18 @@ describe('contexts reducer', () => {
         inReplyTos: fromJS({
           B: 'A',
           C: 'B',
-        }),
+        }) as ImmutableMap<string, string>,
         replies: fromJS({
           A: ImmutableOrderedSet(['B']),
           B: ImmutableOrderedSet(['C']),
-        }),
+        }) as ImmutableMap<string, ImmutableOrderedSet<string>>,
       });
 
       const expected = ReducerRecord({
-        inReplyTos: fromJS({}),
+        inReplyTos: fromJS({}) as ImmutableMap<string, string>,
         replies: fromJS({
           A: ImmutableOrderedSet(),
-        }),
+        }) as ImmutableMap<string, ImmutableOrderedSet<string>>,
       });
 
       expect(reducer(state, action)).toEqual(expected);
diff --git a/app/soapbox/reducers/__tests__/conversations-test.js b/app/soapbox/reducers/__tests__/conversations.test.ts
similarity index 100%
rename from app/soapbox/reducers/__tests__/conversations-test.js
rename to app/soapbox/reducers/__tests__/conversations.test.ts
diff --git a/app/soapbox/reducers/__tests__/custom_emojis-test.js b/app/soapbox/reducers/__tests__/custom_emojis.test.ts
similarity index 100%
rename from app/soapbox/reducers/__tests__/custom_emojis-test.js
rename to app/soapbox/reducers/__tests__/custom_emojis.test.ts
diff --git a/app/soapbox/reducers/__tests__/filters-test.js b/app/soapbox/reducers/__tests__/filters.test.ts
similarity index 72%
rename from app/soapbox/reducers/__tests__/filters-test.js
rename to app/soapbox/reducers/__tests__/filters.test.ts
index 90bfc1323..5faa0f948 100644
--- a/app/soapbox/reducers/__tests__/filters-test.js
+++ b/app/soapbox/reducers/__tests__/filters.test.ts
@@ -4,6 +4,6 @@ import reducer from '../filters';
 
 describe('filters reducer', () => {
   it('should return the initial state', () => {
-    expect(reducer(undefined, {})).toEqual(ImmutableList());
+    expect(reducer(undefined, {} as any)).toEqual(ImmutableList());
   });
 });
diff --git a/app/soapbox/reducers/__tests__/group_editor-test.js b/app/soapbox/reducers/__tests__/group_editor.test.ts
similarity index 100%
rename from app/soapbox/reducers/__tests__/group_editor-test.js
rename to app/soapbox/reducers/__tests__/group_editor.test.ts
diff --git a/app/soapbox/reducers/__tests__/group_lists-test.js b/app/soapbox/reducers/__tests__/group_lists.test.ts
similarity index 100%
rename from app/soapbox/reducers/__tests__/group_lists-test.js
rename to app/soapbox/reducers/__tests__/group_lists.test.ts
diff --git a/app/soapbox/reducers/__tests__/group_relationships-test.js b/app/soapbox/reducers/__tests__/group_relationships.test.ts
similarity index 100%
rename from app/soapbox/reducers/__tests__/group_relationships-test.js
rename to app/soapbox/reducers/__tests__/group_relationships.test.ts
diff --git a/app/soapbox/reducers/__tests__/groups-test.js b/app/soapbox/reducers/__tests__/groups.test.ts
similarity index 100%
rename from app/soapbox/reducers/__tests__/groups-test.js
rename to app/soapbox/reducers/__tests__/groups.test.ts
diff --git a/app/soapbox/reducers/__tests__/index-test.js b/app/soapbox/reducers/__tests__/index.test.ts
similarity index 100%
rename from app/soapbox/reducers/__tests__/index-test.js
rename to app/soapbox/reducers/__tests__/index.test.ts
diff --git a/app/soapbox/reducers/__tests__/instance-test.js b/app/soapbox/reducers/__tests__/instance.test.ts
similarity index 97%
rename from app/soapbox/reducers/__tests__/instance-test.js
rename to app/soapbox/reducers/__tests__/instance.test.ts
index 33a5fab55..8357d6851 100644
--- a/app/soapbox/reducers/__tests__/instance-test.js
+++ b/app/soapbox/reducers/__tests__/instance.test.ts
@@ -7,7 +7,7 @@ import reducer from '../instance';
 
 describe('instance reducer', () => {
   it('should return the initial state', () => {
-    const result = reducer(undefined, {});
+    const result = reducer(undefined, {} as any);
 
     const expected = {
       description_limit: 1500,
@@ -128,7 +128,7 @@ describe('instance reducer', () => {
       };
 
       // The normalizer has `registrations: closed` by default
-      const state = reducer(undefined, {});
+      const state = reducer(undefined, {} as any);
       expect(state.registrations).toBe(false);
 
       // After importing the configs, registration will be open
diff --git a/app/soapbox/reducers/__tests__/list_adder-test.js b/app/soapbox/reducers/__tests__/list_adder.test.ts
similarity index 93%
rename from app/soapbox/reducers/__tests__/list_adder-test.js
rename to app/soapbox/reducers/__tests__/list_adder.test.ts
index 4806d3d13..3989cf5e7 100644
--- a/app/soapbox/reducers/__tests__/list_adder-test.js
+++ b/app/soapbox/reducers/__tests__/list_adder.test.ts
@@ -6,7 +6,7 @@ import reducer from '../list_adder';
 
 describe('list_adder reducer', () => {
   it('should return the initial state', () => {
-    expect(reducer(undefined, {})).toMatchObject({
+    expect(reducer(undefined, {} as any)).toMatchObject({
       accountId: null,
 
       lists: {
@@ -22,7 +22,7 @@ describe('list_adder reducer', () => {
       accountId: null,
 
       lists: ImmutableRecord({
-        items: ImmutableList(),
+        items: ImmutableList<string>(),
         loaded: false,
         isLoading: false,
       })(),
@@ -46,7 +46,7 @@ describe('list_adder reducer', () => {
       accountId: null,
 
       lists: ImmutableRecord({
-        items: ImmutableList(),
+        items: ImmutableList<string>(),
         loaded: false,
         isLoading: false,
       })(),
@@ -70,7 +70,7 @@ describe('list_adder reducer', () => {
       accountId: null,
 
       lists: ImmutableRecord({
-        items: ImmutableList(),
+        items: ImmutableList<string>(),
         loaded: false,
         isLoading: false,
       })(),
diff --git a/app/soapbox/reducers/__tests__/lists-test.js b/app/soapbox/reducers/__tests__/lists.test.ts
similarity index 72%
rename from app/soapbox/reducers/__tests__/lists-test.js
rename to app/soapbox/reducers/__tests__/lists.test.ts
index 56afd7a5c..43881a218 100644
--- a/app/soapbox/reducers/__tests__/lists-test.js
+++ b/app/soapbox/reducers/__tests__/lists.test.ts
@@ -4,6 +4,6 @@ import reducer from '../lists';
 
 describe('lists reducer', () => {
   it('should return the initial state', () => {
-    expect(reducer(undefined, {})).toEqual(ImmutableMap());
+    expect(reducer(undefined, {} as any)).toEqual(ImmutableMap());
   });
 });
diff --git a/app/soapbox/reducers/__tests__/me-test.js b/app/soapbox/reducers/__tests__/me.test.ts
similarity index 67%
rename from app/soapbox/reducers/__tests__/me-test.js
rename to app/soapbox/reducers/__tests__/me.test.ts
index 2c434dca4..28504ba54 100644
--- a/app/soapbox/reducers/__tests__/me-test.js
+++ b/app/soapbox/reducers/__tests__/me.test.ts
@@ -2,6 +2,6 @@ import reducer from '../me';
 
 describe('me reducer', () => {
   it('should return the initial state', () => {
-    expect(reducer(undefined, {})).toEqual(null);
+    expect(reducer(undefined, {} as any)).toEqual(null);
   });
 });
diff --git a/app/soapbox/reducers/__tests__/meta-test.js b/app/soapbox/reducers/__tests__/meta.test.ts
similarity index 100%
rename from app/soapbox/reducers/__tests__/meta-test.js
rename to app/soapbox/reducers/__tests__/meta.test.ts
diff --git a/app/soapbox/reducers/__tests__/modals-test.js b/app/soapbox/reducers/__tests__/modals.test.ts
similarity index 56%
rename from app/soapbox/reducers/__tests__/modals-test.js
rename to app/soapbox/reducers/__tests__/modals.test.ts
index 36f4fba64..bbb5c4552 100644
--- a/app/soapbox/reducers/__tests__/modals-test.js
+++ b/app/soapbox/reducers/__tests__/modals.test.ts
@@ -1,4 +1,4 @@
-import { List as ImmutableList } from 'immutable';
+import { List as ImmutableList, Record as ImmutableRecord } from 'immutable';
 
 import { MODAL_OPEN, MODAL_CLOSE } from 'soapbox/actions/modals';
 
@@ -6,11 +6,11 @@ import reducer from '../modals';
 
 describe('modal reducer', () => {
   it('should return the initial state', () => {
-    expect(reducer(undefined, {})).toEqual(ImmutableList());
+    expect(reducer(undefined, {} as any)).toEqual(ImmutableList());
   });
 
   it('should handle MODAL_OPEN', () => {
-    const state = ImmutableList();
+    const state = ImmutableList<any>();
     const action = {
       type: MODAL_OPEN,
       modalType: 'type1',
@@ -23,35 +23,43 @@ describe('modal reducer', () => {
   });
 
   it('should handle MODAL_CLOSE', () => {
-    const state = ImmutableList([{
-      modalType: 'type1',
-      modalProps: { props1: '1' },
-    }]);
+    const state = ImmutableList([
+      ImmutableRecord({
+        modalType: 'type1',
+        modalProps: { props1: '1' },
+      })(),
+    ]);
     const action = {
       type: MODAL_CLOSE,
     };
-    expect(reducer(state, action)).toMatchObject(ImmutableList());
+    expect(reducer(state, action).toJS()).toMatchObject([]);
   });
 
   it('should handle MODAL_CLOSE with specified modalType', () => {
     const state = ImmutableList([
-      {
+      ImmutableRecord({
         modalType: 'type1',
-      },
-      {
+        modalProps: null,
+      })(),
+      ImmutableRecord({
         modalType: 'type2',
-      },
-      {
+        modalProps: null,
+      })(),
+      ImmutableRecord({
         modalType: 'type1',
-      },
+        modalProps: null,
+      })(),
     ]);
     const action = {
       type: MODAL_CLOSE,
       modalType: 'type2',
     };
-    expect(reducer(state, action)).toMatchObject(ImmutableList([{
-      modalType: 'type1',
-    }]));
+    expect(reducer(state, action).toJS()).toEqual([
+      {
+        modalType: 'type1',
+        modalProps: null,
+      },
+    ]);
   });
 
 });
diff --git a/app/soapbox/reducers/__tests__/mutes-test.js b/app/soapbox/reducers/__tests__/mutes.test.ts
similarity index 51%
rename from app/soapbox/reducers/__tests__/mutes-test.js
rename to app/soapbox/reducers/__tests__/mutes.test.ts
index 175f2ff38..411db10c6 100644
--- a/app/soapbox/reducers/__tests__/mutes-test.js
+++ b/app/soapbox/reducers/__tests__/mutes.test.ts
@@ -1,4 +1,4 @@
-import { Map as ImmutableMap } from 'immutable';
+import { Record as ImmutableRecord } from 'immutable';
 
 import {
   MUTES_INIT_MODAL,
@@ -9,50 +9,54 @@ import reducer from '../mutes';
 
 describe('mutes reducer', () => {
   it('should return the initial state', () => {
-    expect(reducer(undefined, {})).toEqual(ImmutableMap({
-      new: ImmutableMap({
+    expect(reducer(undefined, {}).toJS()).toEqual({
+      new: {
         isSubmitting: false,
-        account: null,
+        accountId: null,
         notifications: true,
-      }),
-    }));
+      },
+    });
   });
 
   it('should handle MUTES_INIT_MODAL', () => {
-    const state = ImmutableMap({
-      new: ImmutableMap({
+    const state = ImmutableRecord({
+      new: ImmutableRecord({
         isSubmitting: false,
-        account: null,
+        accountId: null,
         notifications: true,
-      }),
-    });
+      })(),
+    })();
     const action = {
       type: MUTES_INIT_MODAL,
-      account: 'account1',
+      account: { id: 'account1' },
     };
-    expect(reducer(state, action)).toEqual(ImmutableMap({
-      new: ImmutableMap({
+    expect(reducer(state, action).toJS()).toEqual({
+      new: {
         isSubmitting: false,
-        account: 'account1',
+        accountId: 'account1',
         notifications: true,
-      }),
-    }));
+      },
+    });
   });
 
   it('should handle MUTES_TOGGLE_HIDE_NOTIFICATIONS', () => {
-    const state = ImmutableMap({
-      new: ImmutableMap({
+    const state = ImmutableRecord({
+      new: ImmutableRecord({
+        isSubmitting: false,
+        accountId: null,
         notifications: true,
-      }),
-    });
+      })(),
+    })();
     const action = {
       type: MUTES_TOGGLE_HIDE_NOTIFICATIONS,
     };
-    expect(reducer(state, action)).toEqual(ImmutableMap({
-      new: ImmutableMap({
+    expect(reducer(state, action).toJS()).toEqual({
+      new: {
+        isSubmitting: false,
+        accountId: null,
         notifications: false,
-      }),
-    }));
+      },
+    });
   });
 
 });
diff --git a/app/soapbox/reducers/__tests__/patron-test.js b/app/soapbox/reducers/__tests__/patron.test.ts
similarity index 94%
rename from app/soapbox/reducers/__tests__/patron-test.js
rename to app/soapbox/reducers/__tests__/patron.test.ts
index 01736704b..4424285cd 100644
--- a/app/soapbox/reducers/__tests__/patron-test.js
+++ b/app/soapbox/reducers/__tests__/patron.test.ts
@@ -5,7 +5,7 @@ import reducer from '../patron';
 
 describe('patron reducer', () => {
   it('should return the initial state', () => {
-    const result = reducer(undefined, {});
+    const result = reducer(undefined, {} as any);
     expect(ImmutableRecord.isRecord(result)).toBe(true);
     expect(result.instance.url).toBe('');
   });
diff --git a/app/soapbox/reducers/__tests__/polls-test.js b/app/soapbox/reducers/__tests__/polls.test.ts
similarity index 92%
rename from app/soapbox/reducers/__tests__/polls-test.js
rename to app/soapbox/reducers/__tests__/polls.test.ts
index b19ad858c..b9ceb07f7 100644
--- a/app/soapbox/reducers/__tests__/polls-test.js
+++ b/app/soapbox/reducers/__tests__/polls.test.ts
@@ -6,7 +6,7 @@ import reducer from '../polls';
 
 describe('polls reducer', () => {
   it('should return the initial state', () => {
-    expect(reducer(undefined, {})).toEqual(ImmutableMap());
+    expect(reducer(undefined, {} as any)).toEqual(ImmutableMap());
   });
 
   describe('POLLS_IMPORT', () => {
diff --git a/app/soapbox/reducers/__tests__/push_notifications-test.js b/app/soapbox/reducers/__tests__/push_notifications.test.ts
similarity index 93%
rename from app/soapbox/reducers/__tests__/push_notifications-test.js
rename to app/soapbox/reducers/__tests__/push_notifications.test.ts
index a5db7131d..e7080d42a 100644
--- a/app/soapbox/reducers/__tests__/push_notifications-test.js
+++ b/app/soapbox/reducers/__tests__/push_notifications.test.ts
@@ -6,7 +6,7 @@ describe('push_notifications reducer', () => {
   it('should return the initial state', () => {
     expect(reducer(undefined, {})).toEqual(ImmutableMap({
       subscription: null,
-      alerts: new ImmutableMap({
+      alerts: ImmutableMap({
         follow: true,
         follow_request: true,
         favourite: true,
diff --git a/app/soapbox/reducers/__tests__/reports-test.js b/app/soapbox/reducers/__tests__/reports.test.ts
similarity index 84%
rename from app/soapbox/reducers/__tests__/reports-test.js
rename to app/soapbox/reducers/__tests__/reports.test.ts
index 975a7ec49..77148e572 100644
--- a/app/soapbox/reducers/__tests__/reports-test.js
+++ b/app/soapbox/reducers/__tests__/reports.test.ts
@@ -2,7 +2,7 @@ import reducer from '../reports';
 
 describe('reports reducer', () => {
   it('should return the initial state', () => {
-    expect(reducer(undefined, {}).toJS()).toEqual({
+    expect(reducer(undefined, {} as any).toJS()).toEqual({
       new: {
         isSubmitting: false,
         account_id: null,
diff --git a/app/soapbox/reducers/__tests__/settings-test.js b/app/soapbox/reducers/__tests__/settings.test.ts
similarity index 100%
rename from app/soapbox/reducers/__tests__/settings-test.js
rename to app/soapbox/reducers/__tests__/settings.test.ts
diff --git a/app/soapbox/reducers/__tests__/sidebar-test.js b/app/soapbox/reducers/__tests__/sidebar.test.ts
similarity index 63%
rename from app/soapbox/reducers/__tests__/sidebar-test.js
rename to app/soapbox/reducers/__tests__/sidebar.test.ts
index 511325488..83212335f 100644
--- a/app/soapbox/reducers/__tests__/sidebar-test.js
+++ b/app/soapbox/reducers/__tests__/sidebar.test.ts
@@ -2,6 +2,6 @@ import reducer from '../sidebar';
 
 describe('sidebar reducer', () => {
   it('should return the initial state', () => {
-    expect(reducer(undefined, {})).toEqual({ sidebarOpen: false });
+    expect(reducer(undefined, {} as any)).toEqual({ sidebarOpen: false });
   });
 });
diff --git a/app/soapbox/reducers/__tests__/soapbox-test.js b/app/soapbox/reducers/__tests__/soapbox.test.ts
similarity index 100%
rename from app/soapbox/reducers/__tests__/soapbox-test.js
rename to app/soapbox/reducers/__tests__/soapbox.test.ts
diff --git a/app/soapbox/reducers/__tests__/statuses-test.js b/app/soapbox/reducers/__tests__/statuses.test.ts
similarity index 100%
rename from app/soapbox/reducers/__tests__/statuses-test.js
rename to app/soapbox/reducers/__tests__/statuses.test.ts
diff --git a/app/soapbox/reducers/__tests__/trends-test.js b/app/soapbox/reducers/__tests__/trends.test.ts
similarity index 100%
rename from app/soapbox/reducers/__tests__/trends-test.js
rename to app/soapbox/reducers/__tests__/trends.test.ts
diff --git a/app/soapbox/reducers/__tests__/user_lists-test.js b/app/soapbox/reducers/__tests__/user_lists.test.ts
similarity index 100%
rename from app/soapbox/reducers/__tests__/user_lists-test.js
rename to app/soapbox/reducers/__tests__/user_lists.test.ts
diff --git a/app/soapbox/reducers/__tests__/verification-test.js b/app/soapbox/reducers/__tests__/verification.test.ts
similarity index 100%
rename from app/soapbox/reducers/__tests__/verification-test.js
rename to app/soapbox/reducers/__tests__/verification.test.ts
diff --git a/app/soapbox/reducers/custom_emojis.js b/app/soapbox/reducers/custom_emojis.ts
similarity index 65%
rename from app/soapbox/reducers/custom_emojis.js
rename to app/soapbox/reducers/custom_emojis.ts
index 7008d5234..477e7cce9 100644
--- a/app/soapbox/reducers/custom_emojis.js
+++ b/app/soapbox/reducers/custom_emojis.ts
@@ -1,4 +1,4 @@
-import { List as ImmutableList, fromJS } from 'immutable';
+import { List as ImmutableList, Map as ImmutableMap, fromJS } from 'immutable';
 
 import { emojis as emojiData } from 'soapbox/features/emoji/emoji_mart_data_light';
 import { addCustomToPool } from 'soapbox/features/emoji/emoji_mart_search_light';
@@ -6,15 +6,18 @@ import { addCustomToPool } from 'soapbox/features/emoji/emoji_mart_search_light'
 import { CUSTOM_EMOJIS_FETCH_SUCCESS } from '../actions/custom_emojis';
 import { buildCustomEmojis } from '../features/emoji/emoji';
 
+import type { AnyAction } from 'redux';
+import type { APIEntity } from 'soapbox/types/entities';
+
 const initialState = ImmutableList();
 
 // Populate custom emojis for composer autosuggest
-const autosuggestPopulate = emojis => {
+const autosuggestPopulate = (emojis: ImmutableList<ImmutableMap<string, string>>) => {
   addCustomToPool(buildCustomEmojis(emojis));
 };
 
-const importEmojis = (state, customEmojis) => {
-  const emojis = fromJS(customEmojis).filter(emoji => {
+const importEmojis = (customEmojis: APIEntity[]) => {
+  const emojis = (fromJS(customEmojis) as ImmutableList<ImmutableMap<string, string>>).filter((emoji) => {
     // If a custom emoji has the shortcode of a Unicode emoji, skip it.
     // Otherwise it breaks EmojiMart.
     // https://gitlab.com/soapbox-pub/soapbox-fe/-/issues/610
@@ -26,9 +29,9 @@ const importEmojis = (state, customEmojis) => {
   return emojis;
 };
 
-export default function custom_emojis(state = initialState, action) {
+export default function custom_emojis(state = initialState, action: AnyAction) {
   if (action.type === CUSTOM_EMOJIS_FETCH_SUCCESS) {
-    return importEmojis(state, action.custom_emojis);
+    return importEmojis(action.custom_emojis);
   }
 
   return state;
diff --git a/app/soapbox/reducers/filters.ts b/app/soapbox/reducers/filters.ts
new file mode 100644
index 000000000..a31cb3295
--- /dev/null
+++ b/app/soapbox/reducers/filters.ts
@@ -0,0 +1,23 @@
+import { List as ImmutableList } from 'immutable';
+
+import { normalizeFilter } from 'soapbox/normalizers';
+
+import { FILTERS_FETCH_SUCCESS } from '../actions/filters';
+
+import type { AnyAction } from 'redux';
+import type { APIEntity, Filter as FilterEntity } from 'soapbox/types/entities';
+
+type State = ImmutableList<FilterEntity>;
+
+const importFilters = (_state: State, filters: APIEntity[]): State => {
+  return ImmutableList(filters.map((filter) => normalizeFilter(filter)));
+};
+
+export default function filters(state: State = ImmutableList<FilterEntity>(), action: AnyAction): State {
+  switch (action.type) {
+    case FILTERS_FETCH_SUCCESS:
+      return importFilters(state, action.filters);
+    default:
+      return state;
+  }
+}
diff --git a/app/soapbox/reducers/filters.tsx b/app/soapbox/reducers/filters.tsx
deleted file mode 100644
index e79dde019..000000000
--- a/app/soapbox/reducers/filters.tsx
+++ /dev/null
@@ -1,25 +0,0 @@
-import {
-  Map as ImmutableMap,
-  List as ImmutableList,
-  fromJS,
-} from 'immutable';
-
-import { FILTERS_FETCH_SUCCESS } from '../actions/filters';
-
-import type { AnyAction } from 'redux';
-
-type Filter = ImmutableMap<string, any>;
-type State = ImmutableList<Filter>;
-
-const importFilters = (_state: State, filters: unknown): State => {
-  return ImmutableList(fromJS(filters)).map(filter => ImmutableMap(fromJS(filter)));
-};
-
-export default function filters(state: State = ImmutableList<Filter>(), action: AnyAction): State {
-  switch (action.type) {
-    case FILTERS_FETCH_SUCCESS:
-      return importFilters(state, action.filters);
-    default:
-      return state;
-  }
-}
diff --git a/app/soapbox/reducers/mutes.js b/app/soapbox/reducers/mutes.ts
similarity index 50%
rename from app/soapbox/reducers/mutes.js
rename to app/soapbox/reducers/mutes.ts
index 8cc6fc4a8..e232d4039 100644
--- a/app/soapbox/reducers/mutes.js
+++ b/app/soapbox/reducers/mutes.ts
@@ -1,24 +1,30 @@
-import { Map as ImmutableMap } from 'immutable';
+import { Record as ImmutableRecord } from 'immutable';
 
 import {
   MUTES_INIT_MODAL,
   MUTES_TOGGLE_HIDE_NOTIFICATIONS,
 } from '../actions/mutes';
 
-const initialState = ImmutableMap({
-  new: ImmutableMap({
-    isSubmitting: false,
-    account: null,
-    notifications: true,
-  }),
+import type { AnyAction } from 'redux';
+
+const NewMuteRecord = ImmutableRecord({
+  isSubmitting: false,
+  accountId: null,
+  notifications: true,
 });
 
-export default function mutes(state = initialState, action) {
+const ReducerRecord = ImmutableRecord({
+  new: NewMuteRecord(),
+});
+
+type State = ReturnType<typeof ReducerRecord>;
+
+export default function mutes(state: State = ReducerRecord(), action: AnyAction) {
   switch (action.type) {
     case MUTES_INIT_MODAL:
       return state.withMutations((state) => {
         state.setIn(['new', 'isSubmitting'], false);
-        state.setIn(['new', 'account'], action.account);
+        state.setIn(['new', 'accountId'], action.account.id);
         state.setIn(['new', 'notifications'], true);
       });
     case MUTES_TOGGLE_HIDE_NOTIFICATIONS:
diff --git a/app/soapbox/reducers/profile_hover_card.js b/app/soapbox/reducers/profile_hover_card.js
deleted file mode 100644
index 8020b965f..000000000
--- a/app/soapbox/reducers/profile_hover_card.js
+++ /dev/null
@@ -1,28 +0,0 @@
-import { Map as ImmutableMap } from 'immutable';
-
-import {
-  PROFILE_HOVER_CARD_OPEN,
-  PROFILE_HOVER_CARD_CLOSE,
-  PROFILE_HOVER_CARD_UPDATE,
-} from 'soapbox/actions/profile_hover_card';
-
-const initialState = ImmutableMap();
-
-export default function profileHoverCard(state = initialState, action) {
-  switch (action.type) {
-    case PROFILE_HOVER_CARD_OPEN:
-      return ImmutableMap({
-        ref: action.ref,
-        accountId: action.accountId,
-      });
-    case PROFILE_HOVER_CARD_UPDATE:
-      return state.set('hovered', true);
-    case PROFILE_HOVER_CARD_CLOSE:
-      if (state.get('hovered') === true && !action.force)
-        return state;
-      else
-        return ImmutableMap();
-    default:
-      return state;
-  }
-}
diff --git a/app/soapbox/reducers/profile_hover_card.ts b/app/soapbox/reducers/profile_hover_card.ts
new file mode 100644
index 000000000..b07897715
--- /dev/null
+++ b/app/soapbox/reducers/profile_hover_card.ts
@@ -0,0 +1,36 @@
+import { Record as ImmutableRecord } from 'immutable';
+
+import {
+  PROFILE_HOVER_CARD_OPEN,
+  PROFILE_HOVER_CARD_CLOSE,
+  PROFILE_HOVER_CARD_UPDATE,
+} from 'soapbox/actions/profile_hover_card';
+
+import type { AnyAction } from 'redux';
+
+const ReducerRecord = ImmutableRecord({
+  ref: null as React.MutableRefObject<HTMLDivElement> | null,
+  accountId: '',
+  hovered: false,
+});
+
+type State = ReturnType<typeof ReducerRecord>;
+
+export default function profileHoverCard(state: State = ReducerRecord(), action: AnyAction) {
+  switch (action.type) {
+    case PROFILE_HOVER_CARD_OPEN:
+      return state.withMutations((state) => {
+        state.set('ref', action.ref);
+        state.set('accountId', action.accountId);
+      });
+    case PROFILE_HOVER_CARD_UPDATE:
+      return state.set('hovered', true);
+    case PROFILE_HOVER_CARD_CLOSE:
+      if (state.get('hovered') === true && !action.force)
+        return state;
+      else
+        return ReducerRecord();
+    default:
+      return state;
+  }
+}
diff --git a/app/soapbox/selectors/index.ts b/app/soapbox/selectors/index.ts
index 316517a55..c1160acd3 100644
--- a/app/soapbox/selectors/index.ts
+++ b/app/soapbox/selectors/index.ts
@@ -14,7 +14,7 @@ import { shouldFilter } from 'soapbox/utils/timelines';
 
 import type { ReducerChat } from 'soapbox/reducers/chats';
 import type { RootState } from 'soapbox/store';
-import type { Notification } from 'soapbox/types/entities';
+import type { Filter as FilterEntity, Notification } from 'soapbox/types/entities';
 
 const normalizeId = (id: any): string => typeof id === 'string' ? id : '';
 
@@ -104,18 +104,18 @@ const toServerSideType = (columnType: string): string => {
 type FilterContext = { contextType?: string };
 
 export const getFilters = (state: RootState, query: FilterContext) => {
-  return state.filters.filter((filter): boolean => {
+  return state.filters.filter((filter) => {
     return query?.contextType
-      && filter.get('context').includes(toServerSideType(query.contextType))
-      && (filter.get('expires_at') === null
-      || Date.parse(filter.get('expires_at')) > new Date().getTime());
+      && filter.context.includes(toServerSideType(query.contextType))
+      && (filter.expires_at === null
+      || Date.parse(filter.expires_at) > new Date().getTime());
   });
 };
 
 const escapeRegExp = (string: string) =>
   string.replace(/[.*+?^${}()|[\]\\]/g, '\\$&'); // $& means the whole matched string
 
-export const regexFromFilters = (filters: ImmutableList<ImmutableMap<string, any>>) => {
+export const regexFromFilters = (filters: ImmutableList<FilterEntity>) => {
   if (filters.size === 0) return null;
 
   return new RegExp(filters.map(filter => {
diff --git a/app/soapbox/types/entities.ts b/app/soapbox/types/entities.ts
index 023139cef..37572ae24 100644
--- a/app/soapbox/types/entities.ts
+++ b/app/soapbox/types/entities.ts
@@ -8,6 +8,7 @@ import {
   ChatMessageRecord,
   EmojiRecord,
   FieldRecord,
+  FilterRecord,
   HistoryRecord,
   InstanceRecord,
   ListRecord,
@@ -31,6 +32,7 @@ type Chat = ReturnType<typeof ChatRecord>;
 type ChatMessage = ReturnType<typeof ChatMessageRecord>;
 type Emoji = ReturnType<typeof EmojiRecord>;
 type Field = ReturnType<typeof FieldRecord>;
+type Filter = ReturnType<typeof FilterRecord>;
 type History = ReturnType<typeof HistoryRecord>;
 type Instance = ReturnType<typeof InstanceRecord>;
 type List = ReturnType<typeof ListRecord>;
@@ -68,6 +70,7 @@ export {
   ChatMessage,
   Emoji,
   Field,
+  Filter,
   History,
   Instance,
   List,
diff --git a/app/soapbox/utils/__tests__/accounts-test.js b/app/soapbox/utils/__tests__/accounts.test.ts
similarity index 100%
rename from app/soapbox/utils/__tests__/accounts-test.js
rename to app/soapbox/utils/__tests__/accounts.test.ts
diff --git a/app/soapbox/utils/__tests__/base64-test.js b/app/soapbox/utils/__tests__/base64.test.ts
similarity index 100%
rename from app/soapbox/utils/__tests__/base64-test.js
rename to app/soapbox/utils/__tests__/base64.test.ts
diff --git a/app/soapbox/utils/__tests__/colors-test.js b/app/soapbox/utils/__tests__/colors.test.ts
similarity index 100%
rename from app/soapbox/utils/__tests__/colors-test.js
rename to app/soapbox/utils/__tests__/colors.test.ts
diff --git a/app/soapbox/utils/__tests__/config_db-test.js b/app/soapbox/utils/__tests__/config_db.test.ts
similarity index 61%
rename from app/soapbox/utils/__tests__/config_db-test.js
rename to app/soapbox/utils/__tests__/config_db.test.ts
index b8ad15e0f..a83757eb3 100644
--- a/app/soapbox/utils/__tests__/config_db-test.js
+++ b/app/soapbox/utils/__tests__/config_db.test.ts
@@ -1,4 +1,4 @@
-import { fromJS } from 'immutable';
+import { List as ImmutableList, fromJS } from 'immutable';
 
 import config_db from 'soapbox/__fixtures__/config_db.json';
 
@@ -6,7 +6,7 @@ import { ConfigDB } from '../config_db';
 
 test('find', () => {
   const configs = fromJS(config_db).get('configs');
-  expect(ConfigDB.find(configs, ':phoenix', ':json_library')).toEqual(fromJS({
+  expect(ConfigDB.find(configs as ImmutableList<any>, ':phoenix', ':json_library')).toEqual(fromJS({
     group: ':phoenix',
     key: ':json_library',
     value: 'Jason',
diff --git a/app/soapbox/utils/__tests__/features-test.js b/app/soapbox/utils/__tests__/features.test.ts
similarity index 100%
rename from app/soapbox/utils/__tests__/features-test.js
rename to app/soapbox/utils/__tests__/features.test.ts
diff --git a/app/soapbox/utils/__tests__/html-test.js b/app/soapbox/utils/__tests__/html.test.ts
similarity index 100%
rename from app/soapbox/utils/__tests__/html-test.js
rename to app/soapbox/utils/__tests__/html.test.ts
diff --git a/app/soapbox/utils/__tests__/numbers-test.tsx b/app/soapbox/utils/__tests__/numbers.test.tsx
similarity index 100%
rename from app/soapbox/utils/__tests__/numbers-test.tsx
rename to app/soapbox/utils/__tests__/numbers.test.tsx
diff --git a/app/soapbox/utils/__tests__/phone-test.js b/app/soapbox/utils/__tests__/phone.test.ts
similarity index 100%
rename from app/soapbox/utils/__tests__/phone-test.js
rename to app/soapbox/utils/__tests__/phone.test.ts
diff --git a/app/soapbox/utils/__tests__/status-test.js b/app/soapbox/utils/__tests__/status.test.ts
similarity index 100%
rename from app/soapbox/utils/__tests__/status-test.js
rename to app/soapbox/utils/__tests__/status.test.ts
diff --git a/app/soapbox/utils/__tests__/tailwind-test.js b/app/soapbox/utils/__tests__/tailwind.test.ts
similarity index 100%
rename from app/soapbox/utils/__tests__/tailwind-test.js
rename to app/soapbox/utils/__tests__/tailwind.test.ts