fem_tutos/node_modules/@mui/utils/setRef/setRef.d.ts

import * as React from 'react';
/**
 * TODO v5: consider making it private
 *
 * passes {value} to {ref}
 *
 * WARNING: Be sure to only call this inside a callback that is passed as a ref.
 * Otherwise, make sure to cleanup the previous {ref} if it changes. See
 * https://github.com/mui/material-ui/issues/13539
 *
 * Useful if you want to expose the ref of an inner component to the public API
 * while still using it inside the component.
 * @param ref A ref callback or ref object. If anything falsy, this is a no-op.
 */
export default function setRef<T>(ref: React.MutableRefObject<T | null> | ((instance: T | null) => void) | null | undefined, value: T | null): void;