exercicio4.js

const fs = require('fs')
const path = './'


const readdirPromise = (path) => {
    return new Promise( ( resolve, reject ) => {
        fs.readdir( path, ( err, files) => {
            if ( err ) {
                reject( err )
            }else {
                resolve ( files )
            }
        })
    })
}

const getFileAndDir = async (path) => {
  const files = await readdirPromise(path)
  console.log(files);
}

getFileAndDir(path);

Certinho.