Migrate to TypeScript

Author: dmitru

package.json

@@ -3,14 +3,22 @@
   "version": "0.1.0",
   "private": true,
   "dependencies": {
+    "@types/google-map-react": "^0.23.10",
+    "@types/jest": "^23.3.13",
+    "@types/lodash": "^4.14.120",
+    "@types/node": "^10.12.18",
+    "@types/react": "^16.7.20",
+    "@types/react-dom": "^16.0.11",
+    "@types/styled-components": "^4.1.6",
     "google-map-react": "^1.1.2",
     "lodash": "^4.17.11",
     "points-cluster": "^0.1.4",
     "polished": "^2.3.3",
     "react": "^16.7.0",
     "react-dom": "^16.7.0",
     "react-scripts": "2.1.3",
-    "styled-components": "^4.1.3"
+    "styled-components": "^4.1.3",
+    "typescript": "^3.2.4"
   },
   "scripts": {
     "start": "react-scripts start",