Convert System to TypeScript

frontend/src/System/Status/Health/createHealthSelector.ts

@@ -0,0 +1,13 @@
+import { createSelector } from 'reselect';
+import AppState from 'App/State/AppState';
+
+function createHealthSelector() {
+  return createSelector(
+    (state: AppState) => state.system.health,
+    (health) => {
+      return health;
+    }
+  );
+}
+
+export default createHealthSelector;