Fix problems pointed out by yarn check

Update react typings in package.json to match jlab’s version.

package.json

@@ -49,7 +49,7 @@
     "react-dom": "~16.4.2"
   },
   "devDependencies": {
-    "@types/react": "~16.0.19",
+    "@types/react": "~16.4.13",
     "@types/react-dom": "~16.0.5",
     "husky": "^0.14.3",
     "lint-staged": "^7.2.0",
@@ -70,6 +70,6 @@
     ]
   },
   "resolutions": {
-    "@types/react": "~16.0.19"
+    "@types/react": "~16.4.13"
   }
 }

yarn.lock

@@ -351,16 +351,23 @@
   version "10.5.4"
   resolved "https://registry.yarnpkg.com/@types/node/-/node-10.5.4.tgz#6eccc158504357d1da91434d75e86acde94bb10b"
 
+"@types/prop-types@*":
+  version "15.5.6"
+  resolved "https://registry.yarnpkg.com/@types/prop-types/-/prop-types-15.5.6.tgz#9c03d3fed70a8d517c191b7734da2879b50ca26c"
+
 "@types/react-dom@~16.0.5":
   version "16.0.6"
   resolved "https://registry.yarnpkg.com/@types/react-dom/-/react-dom-16.0.6.tgz#f1a65a4e7be8ed5d123f8b3b9eacc913e35a1a3c"
   dependencies:
     "@types/node" "*"
     "@types/react" "*"
 
-"@types/react@*", "@types/react@~16.0.19", "@types/react@~16.4.13":
-  version "16.0.41"
-  resolved "https://registry.yarnpkg.com/@types/react/-/react-16.0.41.tgz#72146737f4d439dc95a53315de4bfb43ac8542ca"
+"@types/react@*", "@types/react@~16.4.13":
+  version "16.4.14"
+  resolved "https://registry.yarnpkg.com/@types/react/-/react-16.4.14.tgz#47c604c8e46ed674bbdf4aabf82b34b9041c6a04"
+  dependencies:
+    "@types/prop-types" "*"
+    csstype "^2.2.0"
 
 ajv@~5.1.6:
   version "5.1.6"
@@ -629,6 +636,10 @@ cross-spawn@^5.0.1:
     shebang-command "^1.2.0"
     which "^1.2.9"
 
+csstype@^2.2.0:
+  version "2.5.7"
+  resolved "https://registry.yarnpkg.com/csstype/-/csstype-2.5.7.tgz#bf9235d5872141eccfb2d16d82993c6b149179ff"
+
 date-fns@^1.27.2:
   version "1.29.0"
   resolved "https://registry.yarnpkg.com/date-fns/-/date-fns-1.29.0.tgz#12e609cdcb935127311d04d33334e2960a2a54e6"