Higher Order Components

If you ever find yourself constantly keep using same <Fade />, <Zoom /> and other effects with a particular component you can directly inject react-reveal functionality into the component. You'd do it with a higher order function called withreveal. In order to use it, you have to import it first alongside with a desired effect (will use Fade as example):

import makeCarousel from 'react-reveal/makeCarousel';
import Fade from 'react-reveal/Fade';

then use it like so

const NewComponent = withReveal(OldComponent, <Fade left />);

Now NewComponent will be automatically wrapped with <Fade left /> effect. The good thing about it is that you can now use NewComponent as if it was react-reveal component ( say in transition groups or carousels ). withReveal will intelligently remap props of NewComponent to make it possible. The following props will be extracted and passed to the chosen react-reveal effect:

  • force
  • mountOnEnter
  • unmountOnExit
  • opposite
  • mirror
  • wait
  • onReveal
  • in
  • when
  • spy
  • collapse
  • onExited
  • enter
  • exit
  • appear

withReveal will wrap your component in a div tag for it to work. If you don't want that then you can expose DOM ref to react-reveal. You do that by using refProp prop. Consider following custom React Component:

function OldComponent({ innerRef, className, style }) {
  return (<div ref={innerRef} className={className} style={style}>Some content</div>);

And then you can inject reveal functionality using following code:

const NewComponent = withReveal(OldComponent, <Fade left refProp="innerRef" />);

In this case, react-reveal will not insert any tags and will use the exposed HTML element. Many React components such as, Styled Components or React Router links already expose their refs via innerRef prop. Styled Components will be detected automatically and refProp will be set accordingly.