Compose Render props. Courtesy of https://gist.github.com/dralletje/51535e665a8f84e3fe59a401cbd217f1

compose-render-props.js

const Compose = ({ children = () => null, ...chain }) => {
  const composedFn = Object.entries(chain).reduce(
    (acc, [renderProp, renderFn]) => props =>
      renderFn(value => acc({ ...props, [renderProp]: value })),
    children
  );
  return composedFn();
};