Updated NodeJS (v10), React (v16) and Enzyme (v3).

package.json

@@ -3,21 +3,23 @@
   "version": "0.1.0",
   "private": true,
   "devDependencies": {
-    "react-addons-test-utils": "^15.4.2",
-    "react-scripts-ts": "1.0.6"
+    "@types/enzyme": "^3.1.0",
+    "@types/jest": "^23.3.10",
+    "@types/node": "^10.12.12",
+    "@types/react": "^16.0.16",
+    "@types/react-dom": "^16.0.2",
+    "@types/react-redux": "^6.0.10",
+    "enzyme": "^3.1.0",
+    "enzyme-adapter-react-16": "^1.0.2",
+    "react-scripts-ts": "^3.1.0",
+    "react-test-renderer": "^16.0.0",
+    "typescript": "^3.2.1"
   },
   "dependencies": {
-    "@types/enzyme": "^2.7.2",
-    "@types/jest": "^18.1.1",
-    "@types/node": "^7.0.5",
-    "@types/react": "^15.6.6",
-    "@types/react-dom": "^0.14.22",
-    "@types/react-redux": "^4.4.36",
-    "enzyme": "^2.7.1",
-    "react": "^15.4.2",
-    "react-dom": "^15.4.2",
-    "react-redux": "^5.0.2",
-    "redux": "^3.6.0"
+    "react": "^16.0.0",
+    "react-dom": "^16.0.0",
+    "react-redux": "^6.0.0",
+    "redux": "^4.0.1"
   },
   "scripts": {
     "start": "react-scripts-ts start",

src/containers/Hello.tsx

@@ -1,7 +1,8 @@
 import Hello from '../components/Hello';
 import * as actions from '../actions/';
 import { StoreState } from '../types/index';
-import { connect, Dispatch } from 'react-redux';
+import { connect } from 'react-redux';
+import { Dispatch } from 'redux';
 
 export function mapStateToProps({ enthusiasmLevel, languageName }: StoreState) {
   return {

src/index.tsx

@@ -4,12 +4,13 @@ import * as ReactDOM from 'react-dom';
 import Hello from './containers/Hello';
 import { Provider } from 'react-redux';
 import { createStore } from 'redux';
+import { EnthusiasmAction } from './actions/index';
 import { enthusiasm } from './reducers/index';
 import { StoreState } from './types/index';
 
 import './index.css';
 
-const store = createStore<StoreState>(enthusiasm, {
+const store = createStore<StoreState, EnthusiasmAction, any, any>(enthusiasm, {
   enthusiasmLevel: 1,
   languageName: 'TypeScript',
 });

src/setupTests.ts

@@ -0,0 +1,4 @@
+import { configure } from 'enzyme';
+import * as Adapter from 'enzyme-adapter-react-16';
+
+configure({ adapter: new Adapter() });

tsconfig.test.json

@@ -0,0 +1,6 @@
+{
+  "extends": "./tsconfig.json",
+  "compilerOptions": {
+    "module": "commonjs"
+  }
+}