whole_func_string: function copyFolder(source, target) {
    if (!fs.existsSync(target)) {
      fs.mkdirSync(target);
    }
    ncp(source, target, function(err) {
      if (err) {
        return console.error(err);
      }
      console.log(`${target} done.`);
    });
  }
func_code_string: function copyFolder(source, target) {
    if (!fs.existsSync(target)) {
      fs.mkdirSync(target);
    }
    ncp(source, target, function(err) {
      if (err) {
        return console.error(err);
      }
      console.log(`${target} done.`);
    });
  }
func_documentation_string: utils