React Cross Fade for Material UI (MUI)

Material UI for React, also called MUI, does not come with a native CrossFade component for transitioning with a cross fade animation between two or more components. Here I want to share the cross fade component that I have used for several of my freelance projects when using Material UI:

import * as React from 'react';

import Box from '@mui/material/Box';
import Fade from '@mui/material/Fade';

type CrossFadeProps = {
  components: {
    in: boolean;
    component: React.ReactNode;
  }[];
};

const CrossFade: React.FC<CrossFadeProps> = ({ components }) => {
  return (
    <Box
      sx={{
        width: '100%',
        height: '100%',
        position: 'relative',
      }}
    >
      {components.map((component, index) => (
        <Fade key={index} in={component.in}>
          <Box
            sx={{
              width: '100%',
              height: '100%',
              position: 'absolute',
            }}
          >
            {component.component}
          </Box>
        </Fade>
      ))}
    </Box>
  );
};

export { CrossFade };

And the usage of this CrossFade component appears as follows:

<CrossFade
  components={[
    {
      in: true,
      component: <div>A</div>,
    },
    {
      in: false,
      component: <div>B</div>,
    },
  ]}
/>

You can pass as many components as you want to the CrossFade component and depending on the in condition, which may be stateful in your implementation, it fades between these components.