Get files inside certain directory

getFiles.js

const fs = require('fs');
const path = require('path');

/**
 * Returns file paths inside of certain directory
 * @param {String} directory Files directory
 * @param {Function} callback Do something with files
 */
exports.getFiles = (directory, callback) => {
  if (fs.existsSync(directory)) {
    fs.readdir(directory, (err, files) => {
      if (err) console.error(err);
      const paths = files.map(file => path.join(directory, file));
      if (callback) callback(paths);
    });
  } else {
    console.error('> Directory does\'t exist');
  }
};