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Component as Prop

In ReactJS, <Menu banner={MyBanner} /> is easy; in ReasonReact, we can't trivially pass the whole component module (it wouldn't even be syntactically valid because a module resides in another layer of the language). Solution:

let bannerCallback = (prop1, prop2) => <MyBanner message=prop1 count=prop2 />;

<Menu bannerFunc=bannerCallback />;

This also has some added advantages:

• The owner is the one controlling how the component renders, not some opaque logic inside MyBanner.
• Circumvents the tendency of needing a props spread in MyBanner's render, since passing a component to a child and the child using prop spread on said component usually go together.