diff --git a/src/components/ActionBar/ActionBar.test.tsx b/src/components/ActionBar/ActionBar.test.tsx
index fac80e0..b77c026 100644
--- a/src/components/ActionBar/ActionBar.test.tsx
+++ b/src/components/ActionBar/ActionBar.test.tsx
@@ -2,7 +2,7 @@ import React from 'react';
 import { mount } from 'enzyme';
 import { ActionBar } from './ActionBar';
 
-const mockPackageMeta = jest.fn(() => ({
+const mockPackageMeta: jest.Mock = jest.fn(() => ({
   latest: {
     homepage: 'https://verdaccio.tld',
     bugs: {
@@ -32,7 +32,6 @@ describe('<ActionBar /> component', () => {
   });
 
   test('when there is no action bar data', () => {
-    // @ts-ignore
     mockPackageMeta.mockImplementation(() => ({
       latest: {},
     }));
@@ -44,7 +43,6 @@ describe('<ActionBar /> component', () => {
   });
 
   test('when there is a button to download a tarball', () => {
-    // @ts-ignore
     mockPackageMeta.mockImplementation(() => ({
       latest: {
         dist: {
diff --git a/src/components/Engines/Engines.test.tsx b/src/components/Engines/Engines.test.tsx
index 4756588..c59bb8b 100644
--- a/src/components/Engines/Engines.test.tsx
+++ b/src/components/Engines/Engines.test.tsx
@@ -5,7 +5,7 @@ import Engine from './Engines';
 jest.mock('./img/node.png', () => '');
 jest.mock('../Install/img/npm.svg', () => '');
 
-const mockPackageMeta = jest.fn(() => ({
+const mockPackageMeta: jest.Mock = jest.fn(() => ({
   latest: {
     homepage: 'https://verdaccio.tld',
     bugs: {
@@ -38,7 +38,6 @@ describe('<Engines /> component', () => {
       },
     };
 
-    // @ts-ignore
     mockPackageMeta.mockImplementation(() => packageMeta);
 
     const wrapper = mount(<Engine />);
@@ -50,7 +49,6 @@ describe('<Engines /> component', () => {
       latest: {},
     };
 
-    // @ts-ignore
     mockPackageMeta.mockImplementation(() => packageMeta);
 
     const wrapper = mount(<Engine />);
@@ -64,7 +62,6 @@ describe('<Engines /> component', () => {
       },
     };
 
-    // @ts-ignore
     mockPackageMeta.mockImplementation(() => packageMeta);
 
     const wrapper = mount(<Engine />);
diff --git a/src/components/Repository/Repository.test.tsx b/src/components/Repository/Repository.test.tsx
index fafdf7b..ca9204a 100644
--- a/src/components/Repository/Repository.test.tsx
+++ b/src/components/Repository/Repository.test.tsx
@@ -4,7 +4,7 @@ import Repository from './Repository';
 
 jest.mock('./img/git.png', () => '');
 
-const mockPackageMeta = jest.fn(() => ({
+const mockPackageMeta: jest.Mock = jest.fn(() => ({
   latest: {
     homepage: 'https://verdaccio.tld',
     bugs: {
@@ -37,7 +37,6 @@ describe('<Repository /> component', () => {
       },
     };
 
-    // @ts-ignore
     mockPackageMeta.mockImplementation(() => packageMeta);
 
     const wrapper = mount(<Repository />);
@@ -49,7 +48,6 @@ describe('<Repository /> component', () => {
       latest: {},
     };
 
-    // @ts-ignore
     mockPackageMeta.mockImplementation(() => packageMeta);
 
     const wrapper = mount(<Repository />);
@@ -66,7 +64,6 @@ describe('<Repository /> component', () => {
       },
     };
 
-    // @ts-ignore
     mockPackageMeta.mockImplementation(() => packageMeta);
 
     const wrapper = mount(<Repository />);