I recently added the Javascript SDK to cdnjs. It can now be accessed via sendbird - Libraries - cdnjs - The #1 free and open source CDN built to make life easier for developers.
This is useful especially for those who like to try little snippets on things such as CodePen. You can now load the sendbird SDK directly into CodePen.
Note: Sendbird does not officially support cdnjs.
Check out the cdnjs Github for more information: