@justinc/dir-exists

var dirExists = require('@justinc/dir-exists').dirExists;
var dirExistsSync = require('@justinc/dir-exists').dirExistsSync;
var dirExistsAsPromised = require('@justinc/dir-exists').dirExistsAsPromised;

console.log('sync:', dirExistsSync('/some/path/to/dir'));
console.log(dirExists('/some/path/to/dir', (err, exists) => {
  if (err) throw err;
  console.log('async:', exists);
}));
dirExistsAsPromised('/some/path/to/dir').then(exists => console.log('promise:', exists));