React is a flexible library that can be used to render mobile and desktop versions of widgets. To render different versions of a widget for different devices, you can use media queries and conditional rendering.

Here are the basic steps you can follow to render mobile and desktop versions of a widget in React:

1. Define the breakpoints: Define the breakpoints that separate the mobile and desktop versions of the widget. For example, you could use a breakpoint of 768 pixels to separate mobile and desktop devices.

2. Use media queries: Use CSS media queries to determine which version of the widget to render based on the device's screen size. For example, you could use a media query that targets devices with a maximum width of 768 pixels to render the mobile version of the widget.

3. Conditionally render components: In your React code, use conditional rendering to display the appropriate version of the widget based on the device's screen size. For example, you could render a different component for the mobile and desktop versions of the widget.

Here is an example of how you could implement this in React:

import React from 'react';
import { useMediaQuery } from 'react-responsive';
import MobileWidget from './MobileWidget';
import DesktopWidget from './DesktopWidget';

const Widget = () => {
  const isMobile = useMediaQuery({ maxWidth: 768 });

  return (
    <div>
      {isMobile ? <MobileWidget /> : <DesktopWidget />}
    </div>
  );
};

export default Widget;

In this example, we're using the useMediaQuery hook from the react-responsive library to determine whether the device is a mobile or desktop device based on the screen size. We're then using conditional rendering to display either the MobileWidget or DesktopWidget component based on the result.

By following these steps, you can create a responsive widget that adapts to the device's screen size and renders the appropriate version for mobile and desktop devices.