Thoughts for an API for better shape validators

User.jsx

import UserShape from '../shapes/UserShape';
import UserCard from './UserCard';
import UserBadge from './UserBadge';

export default class User extends React.Component {
  static defaultProps = {
    user: UserShape.requires(`
        first_name,
        last_name,
      `) // the needs of *this* component
      .passedTo(UserCard, 'user') // merges in the needs of UserCard
      .passedTo(UserBadge, 'user') // merges in the needs of UserBadge
      .isRequired
  }
  render() {
    const { user } = this.props;
    return (
      <div>
        <div>{user.first_name} {user.last_name}</div>
        <UserCard user={user} />
        <UserBadge user={user} />
      </div>
    );
  }
}

UserBadge.jsx

import UserShape from './UserShape';

export default class UserBadge extends React.Component {
  static defaultProps = {
    user: UserShape.requires(`
      profile_url,
      pic: {
        url,
        width,
        height,
      },
    `).isRequired
  }
  render() {
    const { user } = this.props;
    return (
      <a href={user.profile_url}>
        <img src={user.pic.url} width={user.pic.width} height={user.pic.height} />
      </a>
    )
  }
}

UserCard.jsx

import UserShape from './UserShape';

export default class UserCard extends React.Component {
  static defaultProps = {
    user: UserShape.requires(`
      id,
      first_name,
      last_name,
      profile_url,
    `).isRequired
  }
  render() {
    const { user } = this.props;
    return (
      <a href={user.profile_url}>
        {user.first_name} {user.last_name} ({user.id})
      </a>
    )
  }
}

UserShape.jsx

import { Shape, Types } from 'react-validators';

export default Shape({
  id: Types.int,
  first_name: Types.string,
  last_name: Types.string,
  profile_url: Types.url, // additional constrained type validators are provided
  pic: { // you can nest objects
    url: Types.string,
    width: Types.int, // additional constrained type validators are provided
    height: Types.int,
  },
});