язделяль

export const findFile = (node, fn, pathToFile)  => {
  const pathElement = node.name;
  if (node.type === 'directory') {
    return node.children.reduce((res, element) => [...res, ...findFile(element, fn, path.join(pathToFile, pathElement))], []);
  }
  if (fn(node)) {
    return [path.join(pathToFile, node.name)];
  }
  return [];
};

export default (tree, str) => findFile(tree, node => node.type === 'file' && node.name.includes(str), tree.name);