diff --git a/.eslintrc b/.eslintrc
index dd2b27c9..84103e15 100644
--- a/.eslintrc
+++ b/.eslintrc
@@ -69,7 +69,8 @@
           "ignoreComments": true
         }],
         "no-mixed-operators": "off",
-        "react/display-name": "off"
+        "react/display-name": "off",
+        "@typescript-eslint/require-array-sort-compare": "off"
       }
     }
   ]
diff --git a/src/container/types.ts b/src/container/types.ts
index ae26671d..f5fc3ba8 100644
--- a/src/container/types.ts
+++ b/src/container/types.ts
@@ -9,6 +9,9 @@ import { ShortUrlEdition } from '../short-urls/reducers/shortUrlEdition';
 import { ShortUrlsListParams } from '../short-urls/reducers/shortUrlsListParams';
 import { ShortUrlTags } from '../short-urls/reducers/shortUrlTags';
 import { ShortUrlsList } from '../short-urls/reducers/shortUrlsList';
+import { TagDeletion } from '../tags/reducers/tagDelete';
+import { TagEdition } from '../tags/reducers/tagEdit';
+import { TagsList } from '../tags/reducers/tagsList';
 
 export interface ShlinkState {
   servers: ServersMap;
@@ -23,9 +26,9 @@ export interface ShlinkState {
   shortUrlVisits: any;
   tagVisits: any;
   shortUrlDetail: any;
-  tagsList: any;
-  tagDelete: any;
-  tagEdit: any;
+  tagsList: TagsList;
+  tagDelete: TagDeletion;
+  tagEdit: TagEdition;
   mercureInfo: MercureInfo;
   settings: Settings;
 }
diff --git a/src/tags/reducers/tagDelete.js b/src/tags/reducers/tagDelete.ts
similarity index 58%
rename from src/tags/reducers/tagDelete.js
rename to src/tags/reducers/tagDelete.ts
index 14486bea..8fa85414 100644
--- a/src/tags/reducers/tagDelete.js
+++ b/src/tags/reducers/tagDelete.ts
@@ -1,5 +1,8 @@
-import { handleActions } from 'redux-actions';
 import PropTypes from 'prop-types';
+import { Action, Dispatch } from 'redux';
+import { buildReducer } from '../../utils/helpers/redux';
+import { GetState } from '../../container/types';
+import { ShlinkApiClientBuilder } from '../../utils/services/types';
 
 /* eslint-disable padding-line-between-statements */
 export const DELETE_TAG_START = 'shlink/deleteTag/DELETE_TAG_START';
@@ -8,23 +11,36 @@ export const DELETE_TAG = 'shlink/deleteTag/DELETE_TAG';
 export const TAG_DELETED = 'shlink/deleteTag/TAG_DELETED';
 /* eslint-enable padding-line-between-statements */
 
+/** @deprecated Use TagDeletion interface */
 export const tagDeleteType = PropTypes.shape({
   deleting: PropTypes.bool,
   error: PropTypes.bool,
 });
 
-const initialState = {
+export interface TagDeletion {
+  deleting: boolean;
+  error: boolean;
+}
+
+export interface DeleteTagAction extends Action<string> {
+  tag: string;
+}
+
+const initialState: TagDeletion = {
   deleting: false,
   error: false,
 };
 
-export default handleActions({
+export default buildReducer({
   [DELETE_TAG_START]: () => ({ deleting: true, error: false }),
   [DELETE_TAG_ERROR]: () => ({ deleting: false, error: true }),
   [DELETE_TAG]: () => ({ deleting: false, error: false }),
 }, initialState);
 
-export const deleteTag = (buildShlinkApiClient) => (tag) => async (dispatch, getState) => {
+export const deleteTag = (buildShlinkApiClient: ShlinkApiClientBuilder) => (tag: string) => async (
+  dispatch: Dispatch,
+  getState: GetState,
+) => {
   dispatch({ type: DELETE_TAG_START });
   const { deleteTags } = buildShlinkApiClient(getState);
 
@@ -38,4 +54,4 @@ export const deleteTag = (buildShlinkApiClient) => (tag) => async (dispatch, get
   }
 };
 
-export const tagDeleted = (tag) => ({ type: TAG_DELETED, tag });
+export const tagDeleted = (tag: string): DeleteTagAction => ({ type: TAG_DELETED, tag });
diff --git a/src/tags/reducers/tagEdit.js b/src/tags/reducers/tagEdit.ts
similarity index 53%
rename from src/tags/reducers/tagEdit.js
rename to src/tags/reducers/tagEdit.ts
index 137f36df..b3e631c8 100644
--- a/src/tags/reducers/tagEdit.js
+++ b/src/tags/reducers/tagEdit.ts
@@ -1,5 +1,9 @@
 import { pick } from 'ramda';
-import { handleActions } from 'redux-actions';
+import { Action, Dispatch } from 'redux';
+import { buildReducer } from '../../utils/helpers/redux';
+import { GetState } from '../../container/types';
+import { ShlinkApiClientBuilder } from '../../utils/services/types';
+import ColorGenerator from '../../utils/services/ColorGenerator';
 
 /* eslint-disable padding-line-between-statements */
 export const EDIT_TAG_START = 'shlink/editTag/EDIT_TAG_START';
@@ -9,27 +13,41 @@ export const EDIT_TAG = 'shlink/editTag/EDIT_TAG';
 
 export const TAG_EDITED = 'shlink/editTag/TAG_EDITED';
 
-const initialState = {
+export interface TagEdition {
+  oldName: string;
+  newName: string;
+  editing: boolean;
+  error: boolean;
+}
+
+export interface EditTagAction extends Action<string> {
+  oldName: string;
+  newName: string;
+  color: string;
+}
+
+const initialState: TagEdition = {
   oldName: '',
   newName: '',
   editing: false,
   error: false,
 };
 
-export default handleActions({
+export default buildReducer<TagEdition, EditTagAction>({
   [EDIT_TAG_START]: (state) => ({ ...state, editing: true, error: false }),
   [EDIT_TAG_ERROR]: (state) => ({ ...state, editing: false, error: true }),
-  [EDIT_TAG]: (state, action) => ({
+  [EDIT_TAG]: (_, action) => ({
     ...pick([ 'oldName', 'newName' ], action),
     editing: false,
     error: false,
   }),
 }, initialState);
 
-export const editTag = (buildShlinkApiClient, colorGenerator) => (oldName, newName, color) => async (
-  dispatch,
-  getState,
-) => {
+export const editTag = (buildShlinkApiClient: ShlinkApiClientBuilder, colorGenerator: ColorGenerator) => (
+  oldName: string,
+  newName: string,
+  color: string,
+) => async (dispatch: Dispatch, getState: GetState) => {
   dispatch({ type: EDIT_TAG_START });
   const { editTag } = buildShlinkApiClient(getState);
 
@@ -44,7 +62,7 @@ export const editTag = (buildShlinkApiClient, colorGenerator) => (oldName, newNa
   }
 };
 
-export const tagEdited = (oldName, newName, color) => ({
+export const tagEdited = (oldName: string, newName: string, color: string): EditTagAction => ({
   type: TAG_EDITED,
   oldName,
   newName,
diff --git a/src/tags/reducers/tagsList.js b/src/tags/reducers/tagsList.js
deleted file mode 100644
index 643b3a94..00000000
--- a/src/tags/reducers/tagsList.js
+++ /dev/null
@@ -1,99 +0,0 @@
-import { handleActions } from 'redux-actions';
-import { isEmpty, reject } from 'ramda';
-import PropTypes from 'prop-types';
-import { CREATE_VISIT } from '../../visits/reducers/visitCreation';
-import { TAG_DELETED } from './tagDelete';
-import { TAG_EDITED } from './tagEdit';
-
-/* eslint-disable padding-line-between-statements */
-export const LIST_TAGS_START = 'shlink/tagsList/LIST_TAGS_START';
-export const LIST_TAGS_ERROR = 'shlink/tagsList/LIST_TAGS_ERROR';
-export const LIST_TAGS = 'shlink/tagsList/LIST_TAGS';
-export const FILTER_TAGS = 'shlink/tagsList/FILTER_TAGS';
-/* eslint-enable padding-line-between-statements */
-
-const TagStatsType = PropTypes.shape({
-  shortUrlsCount: PropTypes.number,
-  visitsCount: PropTypes.number,
-});
-
-export const TagsListType = PropTypes.shape({
-  tags: PropTypes.arrayOf(PropTypes.string),
-  filteredTags: PropTypes.arrayOf(PropTypes.string),
-  stats: PropTypes.objectOf(TagStatsType), // Record
-  loading: PropTypes.bool,
-  error: PropTypes.bool,
-});
-
-const initialState = {
-  tags: [],
-  filteredTags: [],
-  stats: {},
-  loading: false,
-  error: false,
-};
-
-const renameTag = (oldName, newName) => (tag) => tag === oldName ? newName : tag;
-const rejectTag = (tags, tagToReject) => reject((tag) => tag === tagToReject, tags);
-const increaseVisitsForTags = (tags, stats) => tags.reduce((stats, tag) => {
-  if (!stats[tag]) {
-    return stats;
-  }
-
-  const tagStats = stats[tag];
-
-  tagStats.visitsCount = tagStats.visitsCount + 1;
-  stats[tag] = tagStats;
-
-  return stats;
-}, { ...stats });
-
-export default handleActions({
-  [LIST_TAGS_START]: () => ({ ...initialState, loading: true }),
-  [LIST_TAGS_ERROR]: () => ({ ...initialState, error: true }),
-  [LIST_TAGS]: (state, { tags, stats }) => ({ ...initialState, stats, tags, filteredTags: tags }),
-  [TAG_DELETED]: (state, { tag }) => ({
-    ...state,
-    tags: rejectTag(state.tags, tag),
-    filteredTags: rejectTag(state.filteredTags, tag),
-  }),
-  [TAG_EDITED]: (state, { oldName, newName }) => ({
-    ...state,
-    tags: state.tags.map(renameTag(oldName, newName)).sort(),
-    filteredTags: state.filteredTags.map(renameTag(oldName, newName)).sort(),
-  }),
-  [FILTER_TAGS]: (state, { searchTerm }) => ({
-    ...state,
-    filteredTags: state.tags.filter((tag) => tag.toLowerCase().match(searchTerm)),
-  }),
-  [CREATE_VISIT]: (state, { shortUrl }) => ({
-    ...state,
-    stats: increaseVisitsForTags(shortUrl.tags, state.stats),
-  }),
-}, initialState);
-
-export const listTags = (buildShlinkApiClient, force = true) => () => async (dispatch, getState) => {
-  const { tagsList } = getState();
-
-  if (!force && (tagsList.loading || !isEmpty(tagsList.tags))) {
-    return;
-  }
-
-  dispatch({ type: LIST_TAGS_START });
-
-  try {
-    const { listTags } = buildShlinkApiClient(getState);
-    const { tags, stats = [] } = await listTags();
-    const processedStats = stats.reduce((acc, { tag, shortUrlsCount, visitsCount }) => {
-      acc[tag] = { shortUrlsCount, visitsCount };
-
-      return acc;
-    }, {});
-
-    dispatch({ tags, stats: processedStats, type: LIST_TAGS });
-  } catch (e) {
-    dispatch({ type: LIST_TAGS_ERROR });
-  }
-};
-
-export const filterTags = (searchTerm) => ({ type: FILTER_TAGS, searchTerm });
diff --git a/src/tags/reducers/tagsList.ts b/src/tags/reducers/tagsList.ts
new file mode 100644
index 00000000..207e64a8
--- /dev/null
+++ b/src/tags/reducers/tagsList.ts
@@ -0,0 +1,125 @@
+import { isEmpty, reject } from 'ramda';
+import PropTypes from 'prop-types';
+import { Action, Dispatch } from 'redux';
+import { CREATE_VISIT, CreateVisitAction } from '../../visits/reducers/visitCreation';
+import { buildReducer } from '../../utils/helpers/redux';
+import { ShlinkApiClientBuilder, ShlinkTags } from '../../utils/services/types';
+import { GetState } from '../../container/types';
+import { DeleteTagAction, TAG_DELETED } from './tagDelete';
+import { EditTagAction, TAG_EDITED } from './tagEdit';
+
+/* eslint-disable padding-line-between-statements */
+export const LIST_TAGS_START = 'shlink/tagsList/LIST_TAGS_START';
+export const LIST_TAGS_ERROR = 'shlink/tagsList/LIST_TAGS_ERROR';
+export const LIST_TAGS = 'shlink/tagsList/LIST_TAGS';
+export const FILTER_TAGS = 'shlink/tagsList/FILTER_TAGS';
+/* eslint-enable padding-line-between-statements */
+
+/** @deprecated Use TagsList interface instead */
+export const TagsListType = PropTypes.shape({
+  tags: PropTypes.arrayOf(PropTypes.string),
+  filteredTags: PropTypes.arrayOf(PropTypes.string),
+  stats: PropTypes.objectOf(PropTypes.shape({
+    shortUrlsCount: PropTypes.number,
+    visitsCount: PropTypes.number,
+  })), // Record
+  loading: PropTypes.bool,
+  error: PropTypes.bool,
+});
+
+type TagsStats = Record<string, { shortUrlsCount: number; visitsCount: number }>;
+
+export interface TagsList {
+  tags: string[];
+  filteredTags: string[];
+  stats: TagsStats;
+  loading: boolean;
+  error: boolean;
+}
+
+interface ListTagsAction extends Action<string> {
+  tags: string[];
+  stats: TagsStats;
+}
+
+interface FilterTagsAction extends Action<string> {
+  searchTerm: string;
+}
+
+type ListTagsCombinedAction = ListTagsAction & DeleteTagAction & CreateVisitAction & EditTagAction & FilterTagsAction;
+
+const initialState = {
+  tags: [],
+  filteredTags: [],
+  stats: {},
+  loading: false,
+  error: false,
+};
+
+const renameTag = (oldName: string, newName: string) => (tag: string) => tag === oldName ? newName : tag;
+const rejectTag = (tags: string[], tagToReject: string) => reject((tag) => tag === tagToReject, tags);
+const increaseVisitsForTags = (tags: string[], stats: TagsStats) => tags.reduce((stats, tag) => {
+  if (!stats[tag]) {
+    return stats;
+  }
+
+  const tagStats = stats[tag];
+
+  tagStats.visitsCount = tagStats.visitsCount + 1;
+  stats[tag] = tagStats;
+
+  return stats;
+}, { ...stats });
+
+export default buildReducer<TagsList, ListTagsCombinedAction>({
+  [LIST_TAGS_START]: () => ({ ...initialState, loading: true }),
+  [LIST_TAGS_ERROR]: () => ({ ...initialState, error: true }),
+  [LIST_TAGS]: (_, { tags, stats }) => ({ ...initialState, stats, tags, filteredTags: tags }),
+  [TAG_DELETED]: (state, { tag }) => ({
+    ...state,
+    tags: rejectTag(state.tags, tag),
+    filteredTags: rejectTag(state.filteredTags, tag),
+  }),
+  [TAG_EDITED]: (state, { oldName, newName }) => ({
+    ...state,
+    tags: state.tags.map(renameTag(oldName, newName)).sort(),
+    filteredTags: state.filteredTags.map(renameTag(oldName, newName)).sort(),
+  }),
+  [FILTER_TAGS]: (state, { searchTerm }) => ({
+    ...state,
+    filteredTags: state.tags.filter((tag) => tag.toLowerCase().match(searchTerm)),
+  }),
+  [CREATE_VISIT]: (state, { shortUrl }) => ({
+    ...state,
+    stats: increaseVisitsForTags(shortUrl.tags, state.stats),
+  }),
+}, initialState);
+
+export const listTags = (buildShlinkApiClient: ShlinkApiClientBuilder, force = true) => () => async (
+  dispatch: Dispatch,
+  getState: GetState,
+) => {
+  const { tagsList } = getState();
+
+  if (!force && (tagsList.loading || !isEmpty(tagsList.tags))) {
+    return;
+  }
+
+  dispatch({ type: LIST_TAGS_START });
+
+  try {
+    const { listTags } = buildShlinkApiClient(getState);
+    const { tags, stats = [] }: ShlinkTags = await listTags();
+    const processedStats = stats.reduce<TagsStats>((acc, { tag, shortUrlsCount, visitsCount }) => {
+      acc[tag] = { shortUrlsCount, visitsCount };
+
+      return acc;
+    }, {});
+
+    dispatch<ListTagsAction>({ tags, stats: processedStats, type: LIST_TAGS });
+  } catch (e) {
+    dispatch({ type: LIST_TAGS_ERROR });
+  }
+};
+
+export const filterTags = (searchTerm: string): FilterTagsAction => ({ type: FILTER_TAGS, searchTerm });
diff --git a/src/utils/services/types.ts b/src/utils/services/types.ts
index b52a83ae..a1c55880 100644
--- a/src/utils/services/types.ts
+++ b/src/utils/services/types.ts
@@ -15,6 +15,17 @@ export interface ShlinkHealth {
   version: string;
 }
 
+interface ShlinkTagsStats {
+  tag: string;
+  shortUrlsCount: number;
+  visitsCount: number;
+}
+
+export interface ShlinkTags {
+  tags: string[];
+  stats?: ShlinkTagsStats[];
+}
+
 export interface ProblemDetailsError {
   type: string;
   detail: string;
diff --git a/test/tags/reducers/tagDelete.test.js b/test/tags/reducers/tagDelete.test.ts
similarity index 79%
rename from test/tags/reducers/tagDelete.test.js
rename to test/tags/reducers/tagDelete.test.ts
index 1978917a..e032f3da 100644
--- a/test/tags/reducers/tagDelete.test.js
+++ b/test/tags/reducers/tagDelete.test.ts
@@ -1,3 +1,4 @@
+import { Mock } from 'ts-mockery';
 import reducer, {
   DELETE_TAG_START,
   DELETE_TAG_ERROR,
@@ -6,25 +7,27 @@ import reducer, {
   tagDeleted,
   deleteTag,
 } from '../../../src/tags/reducers/tagDelete';
+import ShlinkApiClient from '../../../src/utils/services/ShlinkApiClient';
+import { ShlinkState } from '../../../src/container/types';
 
 describe('tagDeleteReducer', () => {
   describe('reducer', () => {
     it('returns loading on DELETE_TAG_START', () => {
-      expect(reducer({}, { type: DELETE_TAG_START })).toEqual({
+      expect(reducer(undefined, { type: DELETE_TAG_START })).toEqual({
         deleting: true,
         error: false,
       });
     });
 
     it('returns error on DELETE_TAG_ERROR', () => {
-      expect(reducer({}, { type: DELETE_TAG_ERROR })).toEqual({
+      expect(reducer(undefined, { type: DELETE_TAG_ERROR })).toEqual({
         deleting: false,
         error: true,
       });
     });
 
     it('returns tag names on DELETE_TAG', () => {
-      expect(reducer({}, { type: DELETE_TAG })).toEqual({
+      expect(reducer(undefined, { type: DELETE_TAG })).toEqual({
         deleting: false,
         error: false,
       });
@@ -40,11 +43,11 @@ describe('tagDeleteReducer', () => {
   });
 
   describe('deleteTag', () => {
-    const createApiClientMock = (result) => ({
-      deleteTags: jest.fn(() => result),
+    const createApiClientMock = (result: Promise<void>) => Mock.of<ShlinkApiClient>({
+      deleteTags: jest.fn(async () => result),
     });
     const dispatch = jest.fn();
-    const getState = () => ({});
+    const getState = () => Mock.all<ShlinkState>();
 
     afterEach(() => dispatch.mockReset());
 
diff --git a/test/tags/reducers/tagEdit.test.js b/test/tags/reducers/tagEdit.test.ts
similarity index 72%
rename from test/tags/reducers/tagEdit.test.js
rename to test/tags/reducers/tagEdit.test.ts
index f70a3fa7..d825ce42 100644
--- a/test/tags/reducers/tagEdit.test.js
+++ b/test/tags/reducers/tagEdit.test.ts
@@ -1,3 +1,4 @@
+import { Mock } from 'ts-mockery';
 import reducer, {
   EDIT_TAG_START,
   EDIT_TAG_ERROR,
@@ -5,26 +6,38 @@ import reducer, {
   TAG_EDITED,
   tagEdited,
   editTag,
+  EditTagAction,
 } from '../../../src/tags/reducers/tagEdit';
+import ShlinkApiClient from '../../../src/utils/services/ShlinkApiClient';
+import ColorGenerator from '../../../src/utils/services/ColorGenerator';
+import { ShlinkState } from '../../../src/container/types';
 
 describe('tagEditReducer', () => {
+  const oldName = 'foo';
+  const newName = 'bar';
+  const color = '#ff0000';
+
   describe('reducer', () => {
     it('returns loading on EDIT_TAG_START', () => {
-      expect(reducer({}, { type: EDIT_TAG_START })).toEqual({
+      expect(reducer(undefined, Mock.of<EditTagAction>({ type: EDIT_TAG_START }))).toEqual({
         editing: true,
         error: false,
+        oldName: '',
+        newName: '',
       });
     });
 
     it('returns error on EDIT_TAG_ERROR', () => {
-      expect(reducer({}, { type: EDIT_TAG_ERROR })).toEqual({
+      expect(reducer(undefined, Mock.of<EditTagAction>({ type: EDIT_TAG_ERROR }))).toEqual({
         editing: false,
         error: true,
+        oldName: '',
+        newName: '',
       });
     });
 
     it('returns tag names on EDIT_TAG', () => {
-      expect(reducer({}, { type: EDIT_TAG, oldName: 'foo', newName: 'bar' })).toEqual({
+      expect(reducer(undefined, { type: EDIT_TAG, oldName, newName, color })).toEqual({
         editing: false,
         error: false,
         oldName: 'foo',
@@ -44,24 +57,18 @@ describe('tagEditReducer', () => {
   });
 
   describe('editTag', () => {
-    const createApiClientMock = (result) => ({
-      editTag: jest.fn(() => result),
+    const createApiClientMock = (result: Promise<void>) => Mock.of<ShlinkApiClient>({
+      editTag: jest.fn(async () => result),
     });
-    const colorGenerator = {
+    const colorGenerator = Mock.of<ColorGenerator>({
       setColorForKey: jest.fn(),
-    };
-    const dispatch = jest.fn();
-    const getState = () => ({});
-
-    afterEach(() => {
-      colorGenerator.setColorForKey.mockReset();
-      dispatch.mockReset();
     });
+    const dispatch = jest.fn();
+    const getState = () => Mock.of<ShlinkState>();
+
+    afterEach(jest.clearAllMocks);
 
     it('calls API on success', async () => {
-      const oldName = 'foo';
-      const newName = 'bar';
-      const color = '#ff0000';
       const apiClientMock = createApiClientMock(Promise.resolve());
       const dispatchable = editTag(() => apiClientMock, colorGenerator)(oldName, newName, color);
 
@@ -80,9 +87,6 @@ describe('tagEditReducer', () => {
 
     it('throws on error', async () => {
       const error = 'Error';
-      const oldName = 'foo';
-      const newName = 'bar';
-      const color = '#ff0000';
       const apiClientMock = createApiClientMock(Promise.reject(error));
       const dispatchable = editTag(() => apiClientMock, colorGenerator)(oldName, newName, color);
 
diff --git a/test/tags/reducers/tagsList.test.js b/test/tags/reducers/tagsList.test.ts
similarity index 75%
rename from test/tags/reducers/tagsList.test.js
rename to test/tags/reducers/tagsList.test.ts
index da86b564..884efc1b 100644
--- a/test/tags/reducers/tagsList.test.js
+++ b/test/tags/reducers/tagsList.test.ts
@@ -1,24 +1,30 @@
+import { Mock } from 'ts-mockery';
 import reducer, {
   FILTER_TAGS,
   filterTags,
   LIST_TAGS,
   LIST_TAGS_ERROR,
-  LIST_TAGS_START, listTags,
+  LIST_TAGS_START,
+  listTags,
+  TagsList,
 } from '../../../src/tags/reducers/tagsList';
 import { TAG_DELETED } from '../../../src/tags/reducers/tagDelete';
 import { TAG_EDITED } from '../../../src/tags/reducers/tagEdit';
+import { ShlinkState } from '../../../src/container/types';
 
 describe('tagsListReducer', () => {
+  const state = (props: Partial<TagsList>) => Mock.of<TagsList>(props);
+
   describe('reducer', () => {
     it('returns loading on LIST_TAGS_START', () => {
-      expect(reducer({}, { type: LIST_TAGS_START })).toEqual(expect.objectContaining({
+      expect(reducer(undefined, { type: LIST_TAGS_START } as any)).toEqual(expect.objectContaining({
         loading: true,
         error: false,
       }));
     });
 
     it('returns error on LIST_TAGS_ERROR', () => {
-      expect(reducer({}, { type: LIST_TAGS_ERROR })).toEqual(expect.objectContaining({
+      expect(reducer(undefined, { type: LIST_TAGS_ERROR } as any)).toEqual(expect.objectContaining({
         loading: false,
         error: true,
       }));
@@ -27,7 +33,7 @@ describe('tagsListReducer', () => {
     it('returns provided tags as filtered and regular tags on LIST_TAGS', () => {
       const tags = [ 'foo', 'bar', 'baz' ];
 
-      expect(reducer({}, { type: LIST_TAGS, tags })).toEqual({
+      expect(reducer(undefined, { type: LIST_TAGS, tags } as any)).toEqual({
         tags,
         filteredTags: tags,
         loading: false,
@@ -40,7 +46,7 @@ describe('tagsListReducer', () => {
       const tag = 'foo';
       const expectedTags = [ 'bar', 'baz' ];
 
-      expect(reducer({ tags, filteredTags: tags }, { type: TAG_DELETED, tag })).toEqual({
+      expect(reducer(state({ tags, filteredTags: tags }), { type: TAG_DELETED, tag } as any)).toEqual({
         tags: expectedTags,
         filteredTags: expectedTags,
       });
@@ -52,7 +58,7 @@ describe('tagsListReducer', () => {
       const newName = 'renamed';
       const expectedTags = [ 'foo', 'renamed', 'baz' ].sort();
 
-      expect(reducer({ tags, filteredTags: tags }, { type: TAG_EDITED, oldName, newName })).toEqual({
+      expect(reducer(state({ tags, filteredTags: tags }), { type: TAG_EDITED, oldName, newName } as any)).toEqual({
         tags: expectedTags,
         filteredTags: expectedTags,
       });
@@ -63,7 +69,7 @@ describe('tagsListReducer', () => {
       const searchTerm = 'fo';
       const filteredTags = [ 'foo', 'foo2', 'fo' ];
 
-      expect(reducer({ tags }, { type: FILTER_TAGS, searchTerm })).toEqual({
+      expect(reducer(state({ tags }), { type: FILTER_TAGS, searchTerm } as any)).toEqual({
         tags,
         filteredTags,
       });
@@ -76,19 +82,14 @@ describe('tagsListReducer', () => {
 
   describe('listTags', () => {
     const dispatch = jest.fn();
-    const getState = jest.fn(() => ({}));
+    const getState = jest.fn(() => Mock.all<ShlinkState>());
     const buildShlinkApiClient = jest.fn();
     const listTagsMock = jest.fn();
 
-    afterEach(() => {
-      dispatch.mockReset();
-      getState.mockClear();
-      buildShlinkApiClient.mockReset();
-      listTagsMock.mockReset();
-    });
+    afterEach(jest.clearAllMocks);
 
-    const assertNoAction = async (tagsList) => {
-      getState.mockReturnValue({ tagsList });
+    const assertNoAction = async (tagsList: TagsList) => {
+      getState.mockReturnValue(Mock.of<ShlinkState>({ tagsList }));
 
       await listTags(buildShlinkApiClient, false)()(dispatch, getState);
 
@@ -97,8 +98,11 @@ describe('tagsListReducer', () => {
       expect(getState).toHaveBeenCalledTimes(1);
     };
 
-    it('does nothing when loading', async () => await assertNoAction({ loading: true }));
-    it('does nothing when list is not empty', async () => await assertNoAction({ loading: false, tags: [ 'foo', 'bar' ] }));
+    it('does nothing when loading', async () => assertNoAction(state({ loading: true })));
+    it(
+      'does nothing when list is not empty',
+      async () => assertNoAction(state({ loading: false, tags: [ 'foo', 'bar' ] })),
+    );
 
     it('dispatches loaded lists when no error occurs', async () => {
       const tags = [ 'foo', 'bar', 'baz' ];