style: minor refactors #150

Author: mturoci

ui/src/date_picker.tsx

@@ -58,9 +58,7 @@ export const
     const
       defaultVal = m.value || null,
       parsedVal = defaultVal ? parseDate(defaultVal) : null,
-      [value, setValue] = React.useState<Date | undefined>(() => {
-        return parsedVal ? new Date(parsedVal) : undefined
-      }),
+      [value, setValue] = React.useState<Date | undefined>(parsedVal ? new Date(parsedVal) : undefined),
       onSelectDate = (d: Date | null | undefined) => {
         const val = (d === null || d === undefined) ? defaultVal : formatDate(d)
         wave.args[m.name] = val

ui/src/form.tsx

@@ -195,7 +195,7 @@ export const
       components = items.map((m: any, i) => {
         const
           // All form items are wrapped by their component name (first and only prop of "m").
-          componentKey = Object.keys(m)[0],
+          [componentKey] = Object.keys(m),
           { name, visible = true } = m[componentKey],
           visibleStyles: React.CSSProperties = visible ? {} : { display: 'none' }