Try updating Flow (facebook#3757)

Author: gaearon

packages/react-error-overlay/package.json

@@ -46,7 +46,7 @@
     "eslint-plugin-import": "2.7.0",
     "eslint-plugin-jsx-a11y": "5.1.1",
     "eslint-plugin-react": "7.1.0",
-    "flow-bin": "^0.54.0",
+    "flow-bin": "^0.63.1",
     "html-entities": "1.2.1",
     "jest": "20.0.4",
     "jest-fetch-mock": "1.2.1",