content: import React from 'react';
  import setRef from './setRef';
  export default function useForkRef(refA, refB) {
    /**
     * This will create a new function if the ref props change and are defined.
     * This means react will call the old forkRef with `null` and the new forkRef
     * with the ref. Cleanup naturally emerges from this behavior
     */
    return React.useMemo(() => {
      if (refA == null && refB == null) {
        return null;
      }
  
      return refValue => {
        setRef(refA, refValue);
        setRef(refB, refValue);
      };
    }, [refA, refB]);
  }