React.js: Basic button loader

ButtonLoader.js

import React, {Component, PropTypes as T} from 'react';
import DotLoader from '@/components/DotLoader';

function ButtonLoader({loading, ...props}) {
  return (
    <button {...props} disabled={loading || disabled}>
      {loading ? <DotLoader /> : props.children}
    </button>
  );
}

ButtonLoader.propTypes = {
  loading: T.bool.isRequired
}

ButtonLoader.propTypes = {
  loading: false
}

export default ButtonLoader;