$star$opt$star in optional arguments in React components

[jfrolich]

In upgrading to 7.0.2-dev.2 from 7.0.1

- var match = Props.neutral;
- var neutral = match !== undefined ? match : false;
+ var $staropt$star = Props.neutral;
+ var neutral = $staropt$star !== undefined ? $staropt$star : false;

for a component like this:

[@react.component]
let make = (~neutral=false) => {
  ...
}

It would be great if this variable would contain the name of the prop (or be more descriptive as $staropt$star.