lib/commander/index.js
function humanReadableArgName(arg) {
  var nameOutput = arg.name + (arg.variadic === true ? '...' : '');

  return arg.required
    ? '<' + nameOutput + '>'
    : '[' + nameOutput + ']';
}
function humanReadableArgName(arg) {
  var nameOutput = arg.name + (arg.variadic === true ? '...' : '');

  return arg.required
    ? '<' + nameOutput + '>'
    : '[' + nameOutput + ']';
}
Takes an argument an returns its human readable equivalent for help usage.

@param {Object} arg
@return {String}
@api private