bc518174
 王天杨
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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;
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