• https://cdn.bootcdn.net/ajax/libs/react/16.4.2/cjs/react.development.js
• https://cdn.bootcdn.net/ajax/libs/react/16.4.2/cjs/react.production.min.js
• https://cdn.bootcdn.net/ajax/libs/react/16.4.2/umd/react.development.js
• https://cdn.bootcdn.net/ajax/libs/react/16.4.2/umd/react.production.min.js