Upgrade expo sdk

Author: phamfoo

example/package.json

@@ -8,17 +8,17 @@
     "eject": "expo eject"
   },
   "dependencies": {
-    "expo": "^37.0.0",
-    "react": "16.9.0",
-    "react-dom": "16.9.0",
-    "react-native": "https://github.com/expo/react-native/archive/sdk-37.0.0.tar.gz",
-    "react-native-web": "^0.11.7"
+    "expo": "^39.0.0",
+    "react": "16.13.1",
+    "react-dom": "16.13.1",
+    "react-native": "https://github.com/expo/react-native/archive/sdk-39.0.3.tar.gz",
+    "react-native-web": "~0.13.7"
   },
   "devDependencies": {
-    "@types/react": "^16.9.11",
-    "@types/react-native": "^0.60.22",
-    "babel-preset-expo": "^8.1.0",
-    "typescript": "^3.8.3"
+    "@types/react": "~16.9.35",
+    "@types/react-native": "~0.63.2",
+    "babel-preset-expo": "^8.3.0",
+    "typescript": "~3.9.2"
   },
   "private": true
 }