If user writes for instead of htmlFor, warning is shown. I suppose autofocus instead of autoFocus should warn too.

/**
 * Copyright 2013-present, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 *
 * @providesModule DOMProperty
 */
'use strict';
var invariant = require('invariant');
function checkMask(value, bitmask) {
  return (value & bitmask) === bitmask;