node.js file 삭제

const fs = require('fs').promises;
const constants = require('fs').constants;
// fs.access('필수',option)
fs.readdir('./').then((dir) => {
  console.log('dir: ', dir);
    fs.access('ws_1.txt', constants.F_OK | constants.W_OK | constants.R_OK)
      .then(() => {
        return fs.unlink('ws_1.txt');
      })
      .catch((err) => {
        console.log('no file exists');
        throw err;
      });

    fs.access('./folder', constants.F_OK | constants.W_OK | constants.R_OK).catch(
      (err) => {
        throw err;
      }
    );
});