Add defaultLabel for Labelled (#40)

* Add defaultLabel

* Typing for defaultLabel

* Add null for label prop

* Try to fix (in the dark)

* Allow anything for label

packages/ui-app/src/Labelled.js

@@ -9,21 +9,22 @@ import React from 'react';
 import Label from 'semantic-ui-react/dist/es/elements/Label';
 
 type Props = BareProps & {
-  label?: React$Node,
+  // flowlint-next-line unclear-type:off
+  label?: any,
   children: React$Node
 };
 
-export default function Labelled ({ className, children, label, style }: Props): React$Node {
+const defaultLabel: React$Node = (
+  <div>&nbsp;</div>
+);
+
+export default function Labelled ({ className, children, label = defaultLabel, style }: Props): React$Node {
   return (
     <div
       className={className}
       style={style}
     >
-      <Label>{
-        typeof label === 'undefined'
-          ? <div>&nbsp;</div>
-          : label
-      }</Label>
+      <Label>{label}</Label>
       {children}
     </div>
   );