Raven.js 
Raven.js is the official browser JavaScript client for Sentry.
Requirements
The latest version of Raven.js is guaranteed to work with hosted Sentry.
For on-premise users:
- Raven.js 3.6 requires Sentry server 8.6.0 or later
- Raven.js 2.0 requires Sentry server 8.0.0 or later
Resources
- Download
- Documentation
- Bug Tracker
- IRC (chat.freenode.net, #sentry)
- Follow @mattrobenolt on Twitter for updates