diff --git a/packages/pl-fe/src/actions/about.ts b/packages/pl-fe/src/actions/about.ts
index 6737b4508..ceb17ad29 100644
--- a/packages/pl-fe/src/actions/about.ts
+++ b/packages/pl-fe/src/actions/about.ts
@@ -6,6 +6,26 @@ const FETCH_ABOUT_PAGE_REQUEST = 'FETCH_ABOUT_PAGE_REQUEST' as const;
 const FETCH_ABOUT_PAGE_SUCCESS = 'FETCH_ABOUT_PAGE_SUCCESS' as const;
 const FETCH_ABOUT_PAGE_FAIL = 'FETCH_ABOUT_PAGE_FAIL' as const;
 
+interface FetchAboutPageRequestAction {
+  type: typeof FETCH_ABOUT_PAGE_REQUEST;
+  slug: string;
+  locale?: string;
+}
+
+interface FetchAboutPageSuccessAction {
+  type: typeof FETCH_ABOUT_PAGE_SUCCESS;
+  slug: string;
+  locale?: string;
+  html: string;
+}
+
+interface FetchAboutPageFailAction {
+  type: typeof FETCH_ABOUT_PAGE_FAIL;
+  slug: string;
+  locale?: string;
+  error: any;
+}
+
 const fetchAboutPage = (slug = 'index', locale?: string) => (dispatch: AppDispatch, getState: () => RootState) => {
   dispatch({ type: FETCH_ABOUT_PAGE_REQUEST, slug, locale });
 
@@ -21,9 +41,15 @@ const fetchAboutPage = (slug = 'index', locale?: string) => (dispatch: AppDispat
     });
 };
 
+type AboutAction =
+  | FetchAboutPageRequestAction
+  | FetchAboutPageSuccessAction
+  | FetchAboutPageFailAction;
+
 export {
   fetchAboutPage,
   FETCH_ABOUT_PAGE_REQUEST,
   FETCH_ABOUT_PAGE_SUCCESS,
   FETCH_ABOUT_PAGE_FAIL,
+  type AboutAction,
 };
diff --git a/packages/pl-fe/src/actions/auth.ts b/packages/pl-fe/src/actions/auth.ts
index b19b4f400..52c9e5713 100644
--- a/packages/pl-fe/src/actions/auth.ts
+++ b/packages/pl-fe/src/actions/auth.ts
@@ -57,69 +57,6 @@ const AUTH_ACCOUNT_REMEMBER_REQUEST = 'AUTH_ACCOUNT_REMEMBER_REQUEST' as const;
 const AUTH_ACCOUNT_REMEMBER_SUCCESS = 'AUTH_ACCOUNT_REMEMBER_SUCCESS' as const;
 const AUTH_ACCOUNT_REMEMBER_FAIL = 'AUTH_ACCOUNT_REMEMBER_FAIL' as const;
 
-interface SwitchAccountAction {
-  type: typeof SWITCH_ACCOUNT;
-  account?: Account;
-  background: boolean;
-}
-
-interface AuthAppCreatedAction {
-  type: typeof AUTH_APP_CREATED;
-  app: Application;
-}
-
-interface AuthAppAuthorizedAction {
-  type: typeof AUTH_APP_AUTHORIZED;
-  app: Application;
-  token: Token;
-}
-
-interface AuthLoggedInAction {
-  type: typeof AUTH_LOGGED_IN;
-  token: Token;
-}
-
-interface AuthLoggedOutAction {
-  type: typeof AUTH_LOGGED_OUT;
-  account: Account;
-  standalone: boolean;
-}
-
-interface VerifyCredentialsRequestAction {
-  type: typeof VERIFY_CREDENTIALS_REQUEST;
-  token: string;
-}
-
-interface VerifyCredentialsSuccessAction {
-  type: typeof VERIFY_CREDENTIALS_SUCCESS;
-  token: string;
-  account: CredentialAccount;
-}
-
-interface VerifyCredentialsFailAction {
-  type: typeof VERIFY_CREDENTIALS_FAIL;
-  token: string;
-  error: any;
-}
-
-interface AuthAccountRememberRequestAction {
-  type: typeof AUTH_ACCOUNT_REMEMBER_REQUEST;
-  accountUrl: string;
-}
-
-interface AuthAccountRememberSuccessAction {
-  type: typeof AUTH_ACCOUNT_REMEMBER_SUCCESS;
-  accountUrl: string;
-  account: CredentialAccount;
-}
-
-interface AuthAccountRememberFailAction {
-  type: typeof AUTH_ACCOUNT_REMEMBER_FAIL;
-  error: any;
-  accountUrl: string;
-  skipAlert: boolean;
-}
-
 const customApp = custom('app');
 
 const messages = defineMessages({
@@ -136,6 +73,11 @@ const createAppAndToken = () =>
       dispatch(createAppToken()),
     );
 
+interface AuthAppCreatedAction {
+  type: typeof AUTH_APP_CREATED;
+  app: Application;
+}
+
 /** Create an auth app, or use it from build config */
 const getAuthApp = () =>
   (dispatch: AppDispatch) => {
@@ -160,6 +102,12 @@ const createAuthApp = () =>
     );
   };
 
+interface AuthAppAuthorizedAction {
+  type: typeof AUTH_APP_AUTHORIZED;
+  app: Application;
+  token: Token;
+}
+
 const createAppToken = () =>
   (dispatch: AppDispatch, getState: () => RootState) => {
     const app = getState().auth.app!;
@@ -212,6 +160,23 @@ const otpVerify = (code: string, mfa_token: string) =>
     }).then((token) => dispatch(authLoggedIn(token)));
   };
 
+interface VerifyCredentialsRequestAction {
+  type: typeof VERIFY_CREDENTIALS_REQUEST;
+  token: string;
+}
+
+interface VerifyCredentialsSuccessAction {
+  type: typeof VERIFY_CREDENTIALS_SUCCESS;
+  token: string;
+  account: CredentialAccount;
+}
+
+interface VerifyCredentialsFailAction {
+  type: typeof VERIFY_CREDENTIALS_FAIL;
+  token: string;
+  error: any;
+}
+
 const verifyCredentials = (token: string, accountUrl?: string) =>
   (dispatch: AppDispatch, getState: () => RootState) => {
     const baseURL = parseBaseURL(accountUrl) || BuildConfig.BACKEND_URL;
@@ -242,6 +207,24 @@ const verifyCredentials = (token: string, accountUrl?: string) =>
     });
   };
 
+interface AuthAccountRememberRequestAction {
+  type: typeof AUTH_ACCOUNT_REMEMBER_REQUEST;
+  accountUrl: string;
+}
+
+interface AuthAccountRememberSuccessAction {
+  type: typeof AUTH_ACCOUNT_REMEMBER_SUCCESS;
+  accountUrl: string;
+  account: CredentialAccount;
+}
+
+interface AuthAccountRememberFailAction {
+  type: typeof AUTH_ACCOUNT_REMEMBER_FAIL;
+  error: any;
+  accountUrl: string;
+  skipAlert: boolean;
+}
+
 const rememberAuthAccount = (accountUrl: string) =>
   (dispatch: AppDispatch, getState: () => RootState) => {
     dispatch<AuthAccountRememberRequestAction>({ type: AUTH_ACCOUNT_REMEMBER_REQUEST, accountUrl });
@@ -275,6 +258,12 @@ const logIn = (username: string, password: string) =>
     throw error;
   });
 
+interface AuthLoggedOutAction {
+  type: typeof AUTH_LOGGED_OUT;
+  account: Account;
+  standalone: boolean;
+}
+
 const logOut = () =>
   (dispatch: AppDispatch, getState: () => RootState) => {
     const state = getState();
@@ -304,6 +293,12 @@ const logOut = () =>
       });
   };
 
+interface SwitchAccountAction {
+  type: typeof SWITCH_ACCOUNT;
+  account?: Account;
+  background: boolean;
+}
+
 const switchAccount = (accountId: string, background = false) =>
   (dispatch: AppDispatch, getState: () => RootState) => {
     const account = selectAccount(getState(), accountId);
@@ -341,6 +336,11 @@ const register = (params: CreateAccountParams) =>
 const fetchCaptcha = () =>
   (_dispatch: AppDispatch, getState: () => RootState) => getClient(getState).oauth.getCaptcha();
 
+interface AuthLoggedInAction {
+  type: typeof AUTH_LOGGED_IN;
+  token: Token;
+}
+
 const authLoggedIn = (token: Token) =>
   (dispatch: AppDispatch) => {
     dispatch<AuthLoggedInAction>({ type: AUTH_LOGGED_IN, token });
diff --git a/packages/pl-fe/src/actions/compose.ts b/packages/pl-fe/src/actions/compose.ts
index 8e766170e..01b60e13e 100644
--- a/packages/pl-fe/src/actions/compose.ts
+++ b/packages/pl-fe/src/actions/compose.ts
@@ -137,7 +137,7 @@ const setComposeToStatus = (
     const client = getClient(getState);
     const { createStatusExplicitAddressing: explicitAddressing, version: v } = client.features;
 
-    const action: ComposeSetStatusAction = {
+    dispatch<ComposeSetStatusAction>({
       type: COMPOSE_SET_STATUS,
       composeId: 'compose-modal',
       status,
@@ -150,9 +150,7 @@ const setComposeToStatus = (
       withRedraft,
       draftId,
       editorState,
-    };
-
-    dispatch(action);
+    });
   };
 
 const changeCompose = (composeId: string, text: string) => ({
@@ -184,7 +182,7 @@ const replyCompose = (
 
     if (!account) return;
 
-    const action: ComposeReplyAction = {
+    dispatch<ComposeReplyAction>({
       type: COMPOSE_REPLY,
       composeId: 'compose-modal',
       status,
@@ -192,9 +190,7 @@ const replyCompose = (
       explicitAddressing,
       preserveSpoilers,
       rebloggedBy,
-    };
-
-    dispatch(action);
+    });
     useModalsStore.getState().openModal('COMPOSE');
   };
 
@@ -216,15 +212,13 @@ const quoteCompose = (status: ComposeQuoteAction['status']) =>
     const state = getState();
     const { createStatusExplicitAddressing: explicitAddressing } = state.auth.client.features;
 
-    const action: ComposeQuoteAction = {
+    dispatch<ComposeQuoteAction>({
       type: COMPOSE_QUOTE,
       composeId: 'compose-modal',
       status,
       account: selectOwnAccount(state),
       explicitAddressing,
-    };
-
-    dispatch(action);
+    });
     useModalsStore.getState().openModal('COMPOSE');
   };
 
@@ -256,13 +250,11 @@ const mentionCompose = (account: ComposeMentionAction['account']) =>
   (dispatch: AppDispatch, getState: () => RootState) => {
     if (!getState().me) return;
 
-    const action: ComposeMentionAction = {
+    dispatch<ComposeMentionAction>({
       type: COMPOSE_MENTION,
       composeId: 'compose-modal',
       account: account,
-    };
-
-    dispatch(action);
+    });
     useModalsStore.getState().openModal('COMPOSE');
   };
 
@@ -274,13 +266,11 @@ interface ComposeDirectAction {
 
 const directCompose = (account: ComposeDirectAction['account']) =>
   (dispatch: AppDispatch) => {
-    const action: ComposeDirectAction = {
+    dispatch<ComposeDirectAction>({
       type: COMPOSE_DIRECT,
       composeId: 'compose-modal',
       account,
-    };
-
-    dispatch(action);
+    });
     useModalsStore.getState().openModal('COMPOSE');
   };
 
@@ -289,13 +279,11 @@ const directComposeById = (accountId: string) =>
     const account = selectAccount(getState(), accountId);
     if (!account) return;
 
-    const action: ComposeDirectAction = {
+    dispatch<ComposeDirectAction>({
       type: COMPOSE_DIRECT,
       composeId: 'compose-modal',
       account,
-    };
-
-    dispatch(action);
+    });
     useModalsStore.getState().openModal('COMPOSE');
   };
 
@@ -701,16 +689,14 @@ const selectComposeSuggestion = (composeId: string, position: number, token: str
       startPosition = position;
     }
 
-    const action: ComposeSuggestionSelectAction = {
+    dispatch<ComposeSuggestionSelectAction>({
       type: COMPOSE_SUGGESTION_SELECT,
       composeId,
       position: startPosition,
       token,
       completion,
       path,
-    };
-
-    dispatch(action);
+    });
   };
 
 const updateSuggestionTags = (composeId: string, token: string, tags: Array<Tag>) => ({
@@ -870,13 +856,11 @@ const addToMentions = (composeId: string, accountId: string) =>
     const account = selectAccount(state, accountId);
     if (!account) return;
 
-    const action: ComposeAddToMentionsAction = {
+    return dispatch<ComposeAddToMentionsAction>({
       type: COMPOSE_ADD_TO_MENTIONS,
       composeId,
       account: account.acct,
-    };
-
-    return dispatch(action);
+    });
   };
 
 interface ComposeRemoveFromMentionsAction {
@@ -891,13 +875,11 @@ const removeFromMentions = (composeId: string, accountId: string) =>
     const account = selectAccount(state, accountId);
     if (!account) return;
 
-    const action: ComposeRemoveFromMentionsAction = {
+    return dispatch<ComposeRemoveFromMentionsAction>({
       type: COMPOSE_REMOVE_FROM_MENTIONS,
       composeId,
       account: account.acct,
-    };
-
-    return dispatch(action);
+    });
   };
 
 interface ComposeEventReplyAction {
diff --git a/packages/pl-fe/src/actions/instance.ts b/packages/pl-fe/src/actions/instance.ts
index 629db73f8..3eb5cbcbb 100644
--- a/packages/pl-fe/src/actions/instance.ts
+++ b/packages/pl-fe/src/actions/instance.ts
@@ -33,8 +33,7 @@ const fetchInstance = () => async (dispatch: AppDispatch, getState: () => RootSt
   try {
     const instance = await getClient(getState).instance.getInstance();
 
-    const action: InstanceFetchSuccessAction = { type: INSTANCE_FETCH_SUCCESS, instance };
-    dispatch(action);
+    dispatch<InstanceFetchSuccessAction>({ type: INSTANCE_FETCH_SUCCESS, instance });
   } catch (error) {
     dispatch({ type: INSTANCE_FETCH_FAIL, error });
   }
diff --git a/packages/pl-fe/src/actions/status-quotes.ts b/packages/pl-fe/src/actions/status-quotes.ts
index f10956691..cdfe8ed6e 100644
--- a/packages/pl-fe/src/actions/status-quotes.ts
+++ b/packages/pl-fe/src/actions/status-quotes.ts
@@ -39,25 +39,22 @@ const fetchStatusQuotes = (statusId: string) =>
       return dispatch(noOp);
     }
 
-    const action: FetchStatusQuotesRequestAction = { type: STATUS_QUOTES_FETCH_REQUEST, statusId };
-    dispatch(action);
+    dispatch<FetchStatusQuotesRequestAction>({ type: STATUS_QUOTES_FETCH_REQUEST, statusId });
 
     return getClient(getState).statuses.getStatusQuotes(statusId).then(response => {
       dispatch(importEntities({ statuses: response.items }));
-      const action: FetchStatusQuotesSuccessAction = {
+      return dispatch<FetchStatusQuotesSuccessAction>({
         type: STATUS_QUOTES_FETCH_SUCCESS,
         statusId,
         statuses: response.items,
         next: response.next,
-      };
-      return dispatch(action);
+      });
     }).catch(error => {
-      const action: FetchStatusQuotesFailAction = {
+      dispatch<FetchStatusQuotesFailAction>({
         type: STATUS_QUOTES_FETCH_FAIL,
         statusId,
         error,
-      };
-      dispatch(action);
+      });
     });
   };
 
@@ -87,28 +84,25 @@ const expandStatusQuotes = (statusId: string) =>
       return dispatch(noOp);
     }
 
-    const action: ExpandStatusQuotesRequestAction = {
+    dispatch<ExpandStatusQuotesRequestAction>({
       type: STATUS_QUOTES_EXPAND_REQUEST,
       statusId,
-    };
-    dispatch(action);
+    });
 
     return next().then(response => {
       dispatch(importEntities({ statuses: response.items }));
-      const action: ExpandStatusQuotesSuccessAction = {
+      dispatch<ExpandStatusQuotesSuccessAction>({
         type: STATUS_QUOTES_EXPAND_SUCCESS,
         statusId,
         statuses: response.items,
         next: response.next,
-      };
-      dispatch(action);
+      });
     }).catch(error => {
-      const action: ExpandStatusQuotesFailAction = {
+      dispatch<ExpandStatusQuotesFailAction>({
         type: STATUS_QUOTES_EXPAND_FAIL,
         statusId,
         error,
-      };
-      dispatch(action);
+      });
     });
   };
 
diff --git a/packages/pl-fe/src/actions/suggestions.ts b/packages/pl-fe/src/actions/suggestions.ts
index 326997169..4d407eeae 100644
--- a/packages/pl-fe/src/actions/suggestions.ts
+++ b/packages/pl-fe/src/actions/suggestions.ts
@@ -4,12 +4,28 @@ import { fetchRelationships } from './accounts';
 import { importEntities } from './importer';
 import { insertSuggestionsIntoTimeline } from './timelines';
 
+import type { Suggestion } from 'pl-api';
 import type { AppDispatch, RootState } from 'pl-fe/store';
 
 const SUGGESTIONS_FETCH_REQUEST = 'SUGGESTIONS_FETCH_REQUEST' as const;
 const SUGGESTIONS_FETCH_SUCCESS = 'SUGGESTIONS_FETCH_SUCCESS' as const;
 const SUGGESTIONS_FETCH_FAIL = 'SUGGESTIONS_FETCH_FAIL' as const;
 
+interface SuggestionsFetchRequestAction {
+  type: typeof SUGGESTIONS_FETCH_REQUEST;
+}
+
+interface SuggestionsFetchSuccessAction {
+  type: typeof SUGGESTIONS_FETCH_SUCCESS;
+  suggestions: Array<Suggestion>;
+}
+
+interface SuggestionsFetchFailAction {
+  type: typeof SUGGESTIONS_FETCH_FAIL;
+  error: any;
+  skipAlert: true;
+}
+
 const fetchSuggestions = (limit = 50) =>
   (dispatch: AppDispatch, getState: () => RootState) => {
     const state = getState();
@@ -19,18 +35,18 @@ const fetchSuggestions = (limit = 50) =>
     if (!me) return null;
 
     if (client.features.suggestions) {
-      dispatch({ type: SUGGESTIONS_FETCH_REQUEST });
+      dispatch<SuggestionsFetchRequestAction>({ type: SUGGESTIONS_FETCH_REQUEST });
 
       return getClient(getState).myAccount.getSuggestions(limit).then((suggestions) => {
         const accounts = suggestions.map(({ account }) => account);
 
         dispatch(importEntities({ accounts }));
-        dispatch({ type: SUGGESTIONS_FETCH_SUCCESS, suggestions });
+        dispatch<SuggestionsFetchSuccessAction>({ type: SUGGESTIONS_FETCH_SUCCESS, suggestions });
 
         dispatch(fetchRelationships(accounts.map(({ id }) => id)));
         return suggestions;
       }).catch(error => {
-        dispatch({ type: SUGGESTIONS_FETCH_FAIL, error, skipAlert: true });
+        dispatch<SuggestionsFetchFailAction>({ type: SUGGESTIONS_FETCH_FAIL, error, skipAlert: true });
         throw error;
       });
     } else {
@@ -43,10 +59,16 @@ const fetchSuggestionsForTimeline = () => (dispatch: AppDispatch) => {
   dispatch(fetchSuggestions(20))?.then(() => dispatch(insertSuggestionsIntoTimeline()));
 };
 
+type SuggestionsAction =
+  | SuggestionsFetchRequestAction
+  | SuggestionsFetchSuccessAction
+  | SuggestionsFetchFailAction;
+
 export {
   SUGGESTIONS_FETCH_REQUEST,
   SUGGESTIONS_FETCH_SUCCESS,
   SUGGESTIONS_FETCH_FAIL,
   fetchSuggestions,
   fetchSuggestionsForTimeline,
+  type SuggestionsAction,
 };
diff --git a/packages/pl-fe/src/actions/tags.ts b/packages/pl-fe/src/actions/tags.ts
index bb7c6a3b6..f3add63e7 100644
--- a/packages/pl-fe/src/actions/tags.ts
+++ b/packages/pl-fe/src/actions/tags.ts
@@ -156,6 +156,23 @@ const expandFollowedHashtagsFail = (error: unknown) => ({
   error,
 });
 
+type TagsAction =
+  | ReturnType<typeof fetchHashtagRequest>
+  | ReturnType<typeof fetchHashtagSuccess>
+  | ReturnType<typeof fetchHashtagFail>
+  | ReturnType<typeof followHashtagRequest>
+  | ReturnType<typeof followHashtagSuccess>
+  | ReturnType<typeof followHashtagFail>
+  | ReturnType<typeof unfollowHashtagRequest>
+  | ReturnType<typeof unfollowHashtagSuccess>
+  | ReturnType<typeof unfollowHashtagFail>
+  | ReturnType<typeof fetchFollowedHashtagsRequest>
+  | ReturnType<typeof fetchFollowedHashtagsSuccess>
+  | ReturnType<typeof fetchFollowedHashtagsFail>
+  | ReturnType<typeof expandFollowedHashtagsRequest>
+  | ReturnType<typeof expandFollowedHashtagsSuccess>
+  | ReturnType<typeof expandFollowedHashtagsFail>;
+
 export {
   HASHTAG_FETCH_REQUEST,
   HASHTAG_FETCH_SUCCESS,
@@ -192,4 +209,5 @@ export {
   expandFollowedHashtagsRequest,
   expandFollowedHashtagsSuccess,
   expandFollowedHashtagsFail,
+  type TagsAction,
 };
diff --git a/packages/pl-fe/src/actions/timelines.ts b/packages/pl-fe/src/actions/timelines.ts
index d3767ea47..0b2a3a84f 100644
--- a/packages/pl-fe/src/actions/timelines.ts
+++ b/packages/pl-fe/src/actions/timelines.ts
@@ -61,18 +61,19 @@ const updateTimeline = (timeline: string, statusId: string) => ({
   statusId,
 });
 
-const updateTimelineQueue = (timeline: string, statusId: string) =>
-  (dispatch: AppDispatch) => {
-    // if (typeof accept === 'function' && !accept(status)) {
-    //   return;
-    // }
+const updateTimelineQueue = (timeline: string, statusId: string) => ({
+// if (typeof accept === 'function' && !accept(status)) {
+//   return;
+// }
+  type: TIMELINE_UPDATE_QUEUE,
+  timeline,
+  statusId,
+});
 
-    dispatch({
-      type: TIMELINE_UPDATE_QUEUE,
-      timeline,
-      statusId,
-    });
-  };
+interface TimelineDequeueAction {
+  type: typeof TIMELINE_DEQUEUE;
+  timeline: string;
+}
 
 const dequeueTimeline = (timelineId: string, expandFunc?: (lastStatusId: string) => void) =>
   (dispatch: AppDispatch, getState: () => RootState) => {
@@ -82,7 +83,7 @@ const dequeueTimeline = (timelineId: string, expandFunc?: (lastStatusId: string)
     if (queuedCount <= 0) return;
 
     if (queuedCount <= MAX_QUEUED_ITEMS) {
-      dispatch({ type: TIMELINE_DEQUEUE, timeline: timelineId });
+      dispatch<TimelineDequeueAction>({ type: TIMELINE_DEQUEUE, timeline: timelineId });
       return;
     }
 
@@ -115,15 +116,13 @@ const deleteFromTimelines = (statusId: string) =>
     const references = getState().statuses.filter(status => status.reblog_id === statusId).map(status => [status.id, status.account_id] as const);
     const reblogOf = getState().statuses.get(statusId)?.reblog_id || null;
 
-    const action: TimelineDeleteAction = {
+    dispatch<TimelineDeleteAction>({
       type: TIMELINE_DELETE,
       statusId,
       accountId,
       references,
       reblogOf,
-    };
-
-    dispatch(action);
+    });
   };
 
 const clearTimeline = (timeline: string) => ({ type: TIMELINE_CLEAR, timeline });
@@ -324,12 +323,20 @@ const scrollTopTimeline = (timeline: string, top: boolean) => ({
   top,
 });
 
-const insertSuggestionsIntoTimeline = () => (dispatch: AppDispatch, getState: () => RootState) => {
-  dispatch({ type: TIMELINE_INSERT, timeline: 'home' });
-};
+const insertSuggestionsIntoTimeline = () => ({ type: TIMELINE_INSERT, timeline: 'home' });
 
 // TODO: other actions
-type TimelineAction = TimelineDeleteAction;
+type TimelineAction =
+  | ReturnType<typeof updateTimeline>
+  | TimelineDeleteAction
+  | ReturnType<typeof clearTimeline>
+  | ReturnType<typeof updateTimelineQueue>
+  | TimelineDequeueAction
+  | ReturnType<typeof scrollTopTimeline>
+  | ReturnType<typeof expandTimelineRequest>
+  | ReturnType<typeof expandTimelineSuccess>
+  | ReturnType<typeof expandTimelineFail>
+  | ReturnType<typeof insertSuggestionsIntoTimeline>;
 
 export {
   TIMELINE_UPDATE,
diff --git a/packages/pl-fe/src/actions/trending-statuses.ts b/packages/pl-fe/src/actions/trending-statuses.ts
index 008e5b47f..2d7222d62 100644
--- a/packages/pl-fe/src/actions/trending-statuses.ts
+++ b/packages/pl-fe/src/actions/trending-statuses.ts
@@ -2,12 +2,27 @@ import { getClient } from '../api';
 
 import { importEntities } from './importer';
 
+import type { Status } from 'pl-api';
 import type { AppDispatch, RootState } from 'pl-fe/store';
 
 const TRENDING_STATUSES_FETCH_REQUEST = 'TRENDING_STATUSES_FETCH_REQUEST' as const;
 const TRENDING_STATUSES_FETCH_SUCCESS = 'TRENDING_STATUSES_FETCH_SUCCESS' as const;
 const TRENDING_STATUSES_FETCH_FAIL = 'TRENDING_STATUSES_FETCH_FAIL' as const;
 
+interface TrendingStatusesFetchRequestAction {
+  type: typeof TRENDING_STATUSES_FETCH_REQUEST;
+}
+
+interface TrendingStatusesFetchSuccessAction {
+  type: typeof TRENDING_STATUSES_FETCH_SUCCESS;
+  statuses: Array<Status>;
+}
+
+interface TrendingStatusesFetchFailAction {
+  type: typeof TRENDING_STATUSES_FETCH_FAIL;
+  error: any;
+}
+
 const fetchTrendingStatuses = () =>
   (dispatch: AppDispatch, getState: () => RootState) => {
     const state = getState();
@@ -15,20 +30,26 @@ const fetchTrendingStatuses = () =>
 
     if (!client.features.trendingStatuses) return;
 
-    dispatch({ type: TRENDING_STATUSES_FETCH_REQUEST });
+    dispatch<TrendingStatusesFetchRequestAction>({ type: TRENDING_STATUSES_FETCH_REQUEST });
 
     return client.trends.getTrendingStatuses().then((statuses) => {
       dispatch(importEntities({ statuses }));
-      dispatch({ type: TRENDING_STATUSES_FETCH_SUCCESS, statuses });
+      dispatch<TrendingStatusesFetchSuccessAction>({ type: TRENDING_STATUSES_FETCH_SUCCESS, statuses });
       return statuses;
     }).catch(error => {
-      dispatch({ type: TRENDING_STATUSES_FETCH_FAIL, error });
+      dispatch<TrendingStatusesFetchFailAction>({ type: TRENDING_STATUSES_FETCH_FAIL, error });
     });
   };
 
+type TrendingStatusesAction =
+  | TrendingStatusesFetchRequestAction
+  | TrendingStatusesFetchSuccessAction
+  | TrendingStatusesFetchFailAction;
+
 export {
   TRENDING_STATUSES_FETCH_REQUEST,
   TRENDING_STATUSES_FETCH_SUCCESS,
   TRENDING_STATUSES_FETCH_FAIL,
   fetchTrendingStatuses,
+  type TrendingStatusesAction,
 };
diff --git a/packages/pl-fe/src/reducers/compose.ts b/packages/pl-fe/src/reducers/compose.ts
index 7cc576fc9..928a22086 100644
--- a/packages/pl-fe/src/reducers/compose.ts
+++ b/packages/pl-fe/src/reducers/compose.ts
@@ -64,7 +64,7 @@ import {
 import { EVENT_COMPOSE_CANCEL, EVENT_FORM_SET, type EventsAction } from '../actions/events';
 import { ME_FETCH_SUCCESS, ME_PATCH_SUCCESS, MeAction } from '../actions/me';
 import { FE_NAME } from '../actions/settings';
-import { TIMELINE_DELETE, TimelineAction } from '../actions/timelines';
+import { TIMELINE_DELETE, type TimelineAction } from '../actions/timelines';
 import { unescapeHTML } from '../utils/html';
 
 import type { Emoji } from 'pl-fe/features/emoji';
diff --git a/packages/pl-fe/src/reducers/suggestions.ts b/packages/pl-fe/src/reducers/suggestions.ts
index e829dead5..991dd31c8 100644
--- a/packages/pl-fe/src/reducers/suggestions.ts
+++ b/packages/pl-fe/src/reducers/suggestions.ts
@@ -6,6 +6,7 @@ import {
   SUGGESTIONS_FETCH_REQUEST,
   SUGGESTIONS_FETCH_SUCCESS,
   SUGGESTIONS_FETCH_FAIL,
+  type SuggestionsAction,
 } from 'pl-fe/actions/suggestions';
 
 import type { Suggestion as SuggestionEntity } from 'pl-api';
@@ -37,7 +38,7 @@ const dismissAccount = (state: State, accountId: string) =>
 const dismissAccounts = (state: State, accountIds: string[]) =>
   state.update('items', items => items.filter(item => !accountIds.includes(item.account_id)));
 
-const suggestionsReducer = (state: State = ReducerRecord(), action: AnyAction | DomainBlocksAction) => {
+const suggestionsReducer = (state: State = ReducerRecord(), action: AnyAction | DomainBlocksAction | SuggestionsAction) => {
   switch (action.type) {
     case SUGGESTIONS_FETCH_REQUEST:
       return state.set('isLoading', true);