Actions include: copying the file:line path, opening the file in your local editor (VS Code, Cursor, Windsurf, WebStorm, IntelliJ), previewing / editing the source in a Monaco editor directly in the browser, and adding review comments that can be sent to an AI agent (copy & paste or native integration with OpenCode).
It runs entirely client-side using source maps to resolve file locations. The plugin system is designed so you can build custom actions. In production, conditional exports swap everything for no-ops at zero cost.
Site: https://react-trace.js.org Source: https://github.com/buzinas/react-trace