Adding Google Analytics

package.json

@@ -49,6 +49,7 @@
     "precss": "^3.1.0",
     "react": "^16.2.0",
     "react-dom": "^16.2.0",
+    "react-ga": "^2.4.1",
     "react-test-renderer": "^16.2.0",
     "style-loader": "^0.20.1",
     "svg-react-loader": "^0.4.5",

src/analytics.js

@@ -0,0 +1,10 @@
+import ReactGA from 'react-ga';
+
+const setupGA = () => {
+  ReactGA.initialize(process.env.GA_PROPERTY, {
+    debug: (process.env.NODE_ENV !== 'production')
+  });
+  ReactGA.pageview(document.location.pathname);
+};
+
+export { setupGA };

src/pages/404/index.js

@@ -1 +1,4 @@
 import '../../style.css';
+import { setupGA } from '../../analytics';
+
+setupGA();

src/pages/index/index.js

@@ -5,5 +5,8 @@ import App from '../../components/App';
 
 import '../../style.css';
 import '../../service-worker';
+import { setupGA } from '../../analytics';
+
+setupGA();
 
 ReactDOM.render(<App/>, document.getElementById('root'));

yarn.lock

@@ -6244,6 +6244,13 @@ react-dom@^16.2.0:
     object-assign "^4.1.1"
     prop-types "^15.6.0"
 
+react-ga@^2.4.1:
+  version "2.4.1"
+  resolved "https://registry.yarnpkg.com/react-ga/-/react-ga-2.4.1.tgz#dfbd5f028ed39a07067f7a8bf57dc0d240000767"
+  optionalDependencies:
+    prop-types "^15.6.0"
+    react "^15.6.2 || ^16.0"
+
 react-test-renderer@^16.2.0:
   version "16.2.0"
   resolved "https://registry.yarnpkg.com/react-test-renderer/-/react-test-renderer-16.2.0.tgz#bddf259a6b8fcd8555f012afc8eacc238872a211"
@@ -6252,7 +6259,7 @@ react-test-renderer@^16.2.0:
     object-assign "^4.1.1"
     prop-types "^15.6.0"
 
-react@^16.2.0:
+"react@^15.6.2 || ^16.0", react@^16.2.0:
   version "16.2.0"
   resolved "https://registry.yarnpkg.com/react/-/react-16.2.0.tgz#a31bd2dab89bff65d42134fa187f24d054c273ba"
   dependencies: