diff --git a/landing/.flowconfig b/landing/.flowconfig
index cbb3ecb50..493eb1b62 100644
--- a/landing/.flowconfig
+++ b/landing/.flowconfig
@@ -1,25 +1,31 @@
+[include]
+../lib
+
+[libs]
+../lib/flow-typed
+
 [options]
 module.name_mapper.extension='css' -> '<PROJECT_ROOT>/flow/CSSModule.js.flow'
 esproposal.optional_chaining=enable
 esproposal.nullish_coalescing=enable
 
 [lints]
 sketchy-null-number=warn
 sketchy-null-mixed=warn
 sketchy-number=warn
 untyped-type-import=warn
 nonstrict-import=warn
 deprecated-type=warn
 unsafe-getters-setters=warn
 unnecessary-invariant=warn
 signature-verification-failure=warn
 deprecated-utility=error
 
 [strict]
 deprecated-type
 nonstrict-import
 sketchy-null
 unclear-type
 unsafe-getters-setters
 untyped-import
 untyped-type-import
diff --git a/landing/landing.react.js b/landing/landing.react.js
index 49277823e..88582f057 100644
--- a/landing/landing.react.js
+++ b/landing/landing.react.js
@@ -1,9 +1,9 @@
 // @flow
 
 import * as React from 'react';
 
-function Landing() {
+function Landing(): React.Node {
   return <span>Hello World!</span>;
 }
 
 export default Landing;
diff --git a/landing/root.js b/landing/root.js
index acd6eea41..faae0c968 100644
--- a/landing/root.js
+++ b/landing/root.js
@@ -1,12 +1,14 @@
 // @flow
 
 import * as React from 'react';
 import { hot } from 'react-hot-loader/root';
 
 import Landing from './landing.react';
 
 function RootComponent() {
   return <Landing />;
 }
 
-export default hot(RootComponent);
+const HotReloadingRootComponent: React.ComponentType<{||}> = hot(RootComponent);
+
+export default HotReloadingRootComponent;