src/components/widgets/Tree/component/ExpandBtn.jsx

import React from 'react';

function ExpandBtn({ onShowAll, onHideAll }) {
  return (
    <div className="tree-exp-btn btn-group">
      <button type="button" className="btn btn-link" onClick={onShowAll}>
        Развернуть
      </button>
      <button type="button" className="btn btn-link" onClick={onHideAll}>
        Свернуть
      </button>
    </div>
  );
}

export default ExpandBtn;