diff --git a/app/javascript/mastodon/actions/streaming.js b/app/javascript/mastodon/actions/streaming.js
index 9daeb3c60f..e7fe1c53ed 100644
--- a/app/javascript/mastodon/actions/streaming.js
+++ b/app/javascript/mastodon/actions/streaming.js
@@ -77,7 +77,7 @@ export const connectTimelineStream = (timelineId, channelName, params = {}, opti
       },
 
       onDisconnect() {
-        dispatch(disconnectTimeline(timelineId));
+        dispatch(disconnectTimeline({ timeline: timelineId }));
 
         if (options.fallback) {
           // @ts-expect-error
diff --git a/app/javascript/mastodon/actions/timelines.js b/app/javascript/mastodon/actions/timelines.js
index dc37cdf1f1..d1851551b1 100644
--- a/app/javascript/mastodon/actions/timelines.js
+++ b/app/javascript/mastodon/actions/timelines.js
@@ -6,9 +6,11 @@ import { usePendingItems as preferPendingItems } from 'mastodon/initial_state';
 
 import { importFetchedStatus, importFetchedStatuses } from './importer';
 import { submitMarkers } from './markers';
+import {timelineDelete} from './timelines_typed';
+
+export { disconnectTimeline } from './timelines_typed';
 
 export const TIMELINE_UPDATE  = 'TIMELINE_UPDATE';
-export const TIMELINE_DELETE  = 'TIMELINE_DELETE';
 export const TIMELINE_CLEAR   = 'TIMELINE_CLEAR';
 
 export const TIMELINE_EXPAND_REQUEST = 'TIMELINE_EXPAND_REQUEST';
@@ -17,7 +19,6 @@ export const TIMELINE_EXPAND_FAIL    = 'TIMELINE_EXPAND_FAIL';
 
 export const TIMELINE_SCROLL_TOP   = 'TIMELINE_SCROLL_TOP';
 export const TIMELINE_LOAD_PENDING = 'TIMELINE_LOAD_PENDING';
-export const TIMELINE_DISCONNECT   = 'TIMELINE_DISCONNECT';
 export const TIMELINE_CONNECT      = 'TIMELINE_CONNECT';
 
 export const TIMELINE_MARK_AS_PARTIAL = 'TIMELINE_MARK_AS_PARTIAL';
@@ -62,16 +63,10 @@ export function updateTimeline(timeline, status, accept) {
 export function deleteFromTimelines(id) {
   return (dispatch, getState) => {
     const accountId  = getState().getIn(['statuses', id, 'account']);
-    const references = getState().get('statuses').filter(status => status.get('reblog') === id).map(status => status.get('id'));
+    const references = getState().get('statuses').filter(status => status.get('reblog') === id).map(status => status.get('id')).toJSON();
     const reblogOf   = getState().getIn(['statuses', id, 'reblog'], null);
 
-    dispatch({
-      type: TIMELINE_DELETE,
-      id,
-      accountId,
-      references,
-      reblogOf,
-    });
+    dispatch(timelineDelete(id, accountId, references, reblogOf));
   };
 }
 
@@ -225,12 +220,6 @@ export function connectTimeline(timeline) {
   };
 }
 
-export const disconnectTimeline = timeline => ({
-  type: TIMELINE_DISCONNECT,
-  timeline,
-  usePendingItems: preferPendingItems,
-});
-
 export const markAsPartial = timeline => ({
   type: TIMELINE_MARK_AS_PARTIAL,
   timeline,
diff --git a/app/javascript/mastodon/actions/timelines_typed.ts b/app/javascript/mastodon/actions/timelines_typed.ts
new file mode 100644
index 0000000000..07d82b2f01
--- /dev/null
+++ b/app/javascript/mastodon/actions/timelines_typed.ts
@@ -0,0 +1,20 @@
+import { createAction } from '@reduxjs/toolkit';
+
+import { usePendingItems as preferPendingItems } from 'mastodon/initial_state';
+
+export const disconnectTimeline = createAction(
+  'timeline/disconnect',
+  ({ timeline }: { timeline: string }) => ({
+    payload: {
+      timeline,
+      usePendingItems: preferPendingItems,
+    },
+  }),
+);
+
+export const timelineDelete = createAction<{
+  statusId: string;
+  accountId: string;
+  references: string[];
+  reblogOf: string | null;
+}>('timelines/delete');
diff --git a/app/javascript/mastodon/features/account_timeline/index.jsx b/app/javascript/mastodon/features/account_timeline/index.jsx
index 0478f7a1a1..dc69f83e77 100644
--- a/app/javascript/mastodon/features/account_timeline/index.jsx
+++ b/app/javascript/mastodon/features/account_timeline/index.jsx
@@ -133,7 +133,7 @@ class AccountTimeline extends ImmutablePureComponent {
     }
 
     if (prevProps.accountId === me && accountId !== me) {
-      dispatch(disconnectTimeline(`account:${me}`));
+      dispatch(disconnectTimeline({ timeline: `account:${me}` }));
     }
   }
 
@@ -141,7 +141,7 @@ class AccountTimeline extends ImmutablePureComponent {
     const { dispatch, accountId } = this.props;
 
     if (accountId === me) {
-      dispatch(disconnectTimeline(`account:${me}`));
+      dispatch(disconnectTimeline({ timeline: `account:${me}` }));
     }
   }
 
diff --git a/app/javascript/mastodon/reducers/compose.js b/app/javascript/mastodon/reducers/compose.js
index 97218e9f75..9f66c09631 100644
--- a/app/javascript/mastodon/reducers/compose.js
+++ b/app/javascript/mastodon/reducers/compose.js
@@ -1,5 +1,7 @@
 import { Map as ImmutableMap, List as ImmutableList, OrderedSet as ImmutableOrderedSet, fromJS } from 'immutable';
 
+import { timelineDelete } from 'mastodon/actions/timelines_typed';
+
 import {
   COMPOSE_MOUNT,
   COMPOSE_UNMOUNT,
@@ -51,7 +53,6 @@ import {
 } from '../actions/compose';
 import { REDRAFT } from '../actions/statuses';
 import { STORE_HYDRATE } from '../actions/store';
-import { TIMELINE_DELETE } from '../actions/timelines';
 import { me } from '../initial_state';
 import { unescapeHTML } from '../utils/html';
 import { uuid } from '../uuid';
@@ -446,10 +447,10 @@ export default function compose(state = initialState, action) {
     return updateSuggestionTags(state, action.token);
   case COMPOSE_TAG_HISTORY_UPDATE:
     return state.set('tagHistory', fromJS(action.tags));
-  case TIMELINE_DELETE:
-    if (action.id === state.get('in_reply_to')) {
+  case timelineDelete.type:
+    if (action.payload.statusId === state.get('in_reply_to')) {
       return state.set('in_reply_to', null);
-    } else if (action.id === state.get('id')) {
+    } else if (action.payload.statusId === state.get('id')) {
       return state.set('id', null);
     } else {
       return state;
diff --git a/app/javascript/mastodon/reducers/contexts.js b/app/javascript/mastodon/reducers/contexts.js
index f7d7419a4e..b2c6f3f1ab 100644
--- a/app/javascript/mastodon/reducers/contexts.js
+++ b/app/javascript/mastodon/reducers/contexts.js
@@ -1,11 +1,13 @@
 import { Map as ImmutableMap, List as ImmutableList } from 'immutable';
 
+import { timelineDelete } from 'mastodon/actions/timelines_typed';
+
 import {
   blockAccountSuccess,
   muteAccountSuccess,
 } from '../actions/accounts';
 import { CONTEXT_FETCH_SUCCESS } from '../actions/statuses';
-import { TIMELINE_DELETE, TIMELINE_UPDATE } from '../actions/timelines';
+import { TIMELINE_UPDATE } from '../actions/timelines';
 import { compareId } from '../compare_id';
 
 const initialState = ImmutableMap({
@@ -97,8 +99,8 @@ export default function replies(state = initialState, action) {
     return filterContexts(state, action.payload.relationship, action.payload.statuses);
   case CONTEXT_FETCH_SUCCESS:
     return normalizeContext(state, action.id, action.ancestors, action.descendants);
-  case TIMELINE_DELETE:
-    return deleteFromContexts(state, [action.id]);
+  case timelineDelete.type:
+    return deleteFromContexts(state, [action.payload.statusId]);
   case TIMELINE_UPDATE:
     return updateContext(state, action.status);
   default:
diff --git a/app/javascript/mastodon/reducers/modal.ts b/app/javascript/mastodon/reducers/modal.ts
index 368f26542c..ca85eb8c7f 100644
--- a/app/javascript/mastodon/reducers/modal.ts
+++ b/app/javascript/mastodon/reducers/modal.ts
@@ -1,10 +1,11 @@
 import type { Reducer } from '@reduxjs/toolkit';
 import { Record as ImmutableRecord, Stack } from 'immutable';
 
+import { timelineDelete } from 'mastodon/actions/timelines_typed';
+
 import { COMPOSE_UPLOAD_CHANGE_SUCCESS } from '../actions/compose';
 import type { ModalType } from '../actions/modal';
 import { openModal, closeModal } from '../actions/modal';
-import { TIMELINE_DELETE } from '../actions/timelines';
 
 export type ModalProps = Record<string, unknown>;
 interface Modal {
@@ -72,10 +73,10 @@ export const modalReducer: Reducer<State> = (state = initialState, action) => {
   // TODO: type those actions
   else if (action.type === COMPOSE_UPLOAD_CHANGE_SUCCESS)
     return popModal(state, { modalType: 'FOCAL_POINT', ignoreFocus: false });
-  else if (action.type === TIMELINE_DELETE)
+  else if (timelineDelete.match(action))
     return state.update('stack', (stack) =>
       stack.filterNot(
-        (modal) => modal.get('modalProps').statusId === action.id,
+        (modal) => modal.get('modalProps').statusId === action.payload.statusId,
       ),
     );
   else return state;
diff --git a/app/javascript/mastodon/reducers/notifications.js b/app/javascript/mastodon/reducers/notifications.js
index 64cddcb666..79aa5651ff 100644
--- a/app/javascript/mastodon/reducers/notifications.js
+++ b/app/javascript/mastodon/reducers/notifications.js
@@ -1,6 +1,7 @@
 import { fromJS, Map as ImmutableMap, List as ImmutableList } from 'immutable';
 
 import { blockDomainSuccess } from 'mastodon/actions/domain_blocks';
+import { timelineDelete } from 'mastodon/actions/timelines_typed';
 
 import {
   authorizeFollowRequestSuccess,
@@ -30,7 +31,7 @@ import {
   NOTIFICATIONS_SET_BROWSER_SUPPORT,
   NOTIFICATIONS_SET_BROWSER_PERMISSION,
 } from '../actions/notifications';
-import { TIMELINE_DELETE, TIMELINE_DISCONNECT } from '../actions/timelines';
+import { disconnectTimeline } from '../actions/timelines';
 import { compareId } from '../compare_id';
 
 const initialState = ImmutableMap({
@@ -291,11 +292,11 @@ export default function notifications(state = initialState, action) {
     return filterNotifications(state, [action.payload.id], 'follow_request');
   case NOTIFICATIONS_CLEAR:
     return state.set('items', ImmutableList()).set('pendingItems', ImmutableList()).set('hasMore', false);
-  case TIMELINE_DELETE:
-    return deleteByStatus(state, action.id);
-  case TIMELINE_DISCONNECT:
-    return action.timeline === 'home' ?
-      state.update(action.usePendingItems ? 'pendingItems' : 'items', items => items.first() ? items.unshift(null) : items) :
+  case timelineDelete.type:
+    return deleteByStatus(state, action.payload.statusId);
+  case disconnectTimeline.type:
+    return action.payload.timeline === 'home' ?
+      state.update(action.payload.usePendingItems ? 'pendingItems' : 'items', items => items.first() ? items.unshift(null) : items) :
       state;
   case NOTIFICATIONS_MARK_AS_READ:
     const lastNotification = state.get('items').find(item => item !== null);
diff --git a/app/javascript/mastodon/reducers/picture_in_picture.ts b/app/javascript/mastodon/reducers/picture_in_picture.ts
index 0feddcb706..10d4f1fae5 100644
--- a/app/javascript/mastodon/reducers/picture_in_picture.ts
+++ b/app/javascript/mastodon/reducers/picture_in_picture.ts
@@ -4,8 +4,7 @@ import {
   deployPictureInPictureAction,
   removePictureInPicture,
 } from 'mastodon/actions/picture_in_picture';
-
-import { TIMELINE_DELETE } from '../actions/timelines';
+import { timelineDelete } from 'mastodon/actions/timelines_typed';
 
 export interface PIPMediaProps {
   src: string;
@@ -49,8 +48,9 @@ export const pictureInPictureReducer: Reducer<PIPState> = (
       ...action.payload.props,
     };
   else if (removePictureInPicture.match(action)) return initialState;
-  else if (action.type === TIMELINE_DELETE)
-    if (state.type && state.statusId === action.id) return initialState;
+  else if (timelineDelete.match(action))
+    if (state.type && state.statusId === action.payload.statusId)
+      return initialState;
 
   return state;
 };
diff --git a/app/javascript/mastodon/reducers/statuses.js b/app/javascript/mastodon/reducers/statuses.js
index ca766f73a3..d92174f806 100644
--- a/app/javascript/mastodon/reducers/statuses.js
+++ b/app/javascript/mastodon/reducers/statuses.js
@@ -1,5 +1,7 @@
 import { Map as ImmutableMap, fromJS } from 'immutable';
 
+import { timelineDelete } from 'mastodon/actions/timelines_typed';
+
 import { STATUS_IMPORT, STATUSES_IMPORT } from '../actions/importer';
 import { normalizeStatusTranslation } from '../actions/importer/normalizer';
 import {
@@ -27,7 +29,6 @@ import {
   STATUS_FETCH_REQUEST,
   STATUS_FETCH_FAIL,
 } from '../actions/statuses';
-import { TIMELINE_DELETE } from '../actions/timelines';
 
 const importStatus = (state, status) => state.set(status.id, fromJS(status));
 
@@ -114,8 +115,8 @@ export default function statuses(state = initialState, action) {
     });
   case STATUS_COLLAPSE:
     return state.setIn([action.id, 'collapsed'], action.isCollapsed);
-  case TIMELINE_DELETE:
-    return deleteStatus(state, action.id, action.references);
+  case timelineDelete.type:
+    return deleteStatus(state, action.payload.statusId, action.payload.references);
   case STATUS_TRANSLATE_SUCCESS:
     return statusTranslateSuccess(state, action.id, action.translation);
   case STATUS_TRANSLATE_UNDO:
diff --git a/app/javascript/mastodon/reducers/timelines.js b/app/javascript/mastodon/reducers/timelines.js
index 4c9ab98a82..786d20b307 100644
--- a/app/javascript/mastodon/reducers/timelines.js
+++ b/app/javascript/mastodon/reducers/timelines.js
@@ -1,5 +1,7 @@
 import { Map as ImmutableMap, List as ImmutableList, OrderedSet as ImmutableOrderedSet, fromJS } from 'immutable';
 
+import { timelineDelete } from 'mastodon/actions/timelines_typed';
+
 import {
   blockAccountSuccess,
   muteAccountSuccess,
@@ -7,19 +9,18 @@ import {
 } from '../actions/accounts';
 import {
   TIMELINE_UPDATE,
-  TIMELINE_DELETE,
   TIMELINE_CLEAR,
   TIMELINE_EXPAND_SUCCESS,
   TIMELINE_EXPAND_REQUEST,
   TIMELINE_EXPAND_FAIL,
   TIMELINE_SCROLL_TOP,
   TIMELINE_CONNECT,
-  TIMELINE_DISCONNECT,
   TIMELINE_LOAD_PENDING,
   TIMELINE_MARK_AS_PARTIAL,
   TIMELINE_INSERT,
   TIMELINE_GAP,
   TIMELINE_SUGGESTIONS,
+  disconnectTimeline,
 } from '../actions/timelines';
 import { compareId } from '../compare_id';
 
@@ -201,8 +202,8 @@ export default function timelines(state = initialState, action) {
     return expandNormalizedTimeline(state, action.timeline, fromJS(action.statuses), action.next, action.partial, action.isLoadingRecent, action.usePendingItems);
   case TIMELINE_UPDATE:
     return updateTimeline(state, action.timeline, fromJS(action.status), action.usePendingItems);
-  case TIMELINE_DELETE:
-    return deleteStatus(state, action.id, action.references, action.reblogOf);
+  case timelineDelete.type:
+    return deleteStatus(state, action.payload.statusId, action.payload.references, action.payload.reblogOf);
   case TIMELINE_CLEAR:
     return clearTimeline(state, action.timeline);
   case blockAccountSuccess.type:
@@ -214,11 +215,11 @@ export default function timelines(state = initialState, action) {
     return updateTop(state, action.timeline, action.top);
   case TIMELINE_CONNECT:
     return state.update(action.timeline, initialTimeline, map => reconnectTimeline(map, action.usePendingItems));
-  case TIMELINE_DISCONNECT:
+  case disconnectTimeline.type:
     return state.update(
-      action.timeline,
+      action.payload.timeline,
       initialTimeline,
-      map => map.set('online', false).update(action.usePendingItems ? 'pendingItems' : 'items', items => items.first() ? items.unshift(TIMELINE_GAP) : items),
+      map => map.set('online', false).update(action.payload.usePendingItems ? 'pendingItems' : 'items', items => items.first() ? items.unshift(TIMELINE_GAP) : items),
     );
   case TIMELINE_MARK_AS_PARTIAL:
     return state.update(