remove testing-library legacy syntax

see testing-library/jest-dom#182

Author: tomastudja

src/App/TodoList/Item/index.test.tsx

@@ -1,7 +1,7 @@
 import React from 'react'
 import { render, fireEvent } from '@testing-library/react'
 import Provider, { useAppState } from '@laststance/use-app-state'
-import '@testing-library/jest-dom/extend-expect'
+import '@testing-library/jest-dom'
 import Item from './index'
 import { AppState } from '../../../index'
 

src/App/TodoList/index.test.tsx

@@ -1,7 +1,7 @@
 import React from 'react'
 import { render, fireEvent } from '@testing-library/react'
 import Provider from '@laststance/use-app-state'
-import '@testing-library/jest-dom/extend-expect'
+import '@testing-library/jest-dom'
 import TodoList from './index'
 import { AppState } from '../../index'
 

src/ErrorBoundary.test.js

@@ -2,7 +2,7 @@ import React from 'react'
 import { render } from '@testing-library/react'
 import ErrorBoundary from './ErrorBoundary'
 
-import '@testing-library/jest-dom/extend-expect'
+import '@testing-library/jest-dom'
 
 test('should render fallback page Error was thrown', () => {
   const InvalidComponent = () => undefined