CamlJs-Console Extension is available from Chrome Web Store.

Extension is available from Chrome Web Store.
Alternatively, you can install it manually from the source code.

1. Download the source code archive from GitHub and unpack it to some folder
2. Check the "Developer mode" checkbox on the extensions page
3. Click [Load unpacked extension...] button
4. Select folder with camljs-console source code

Ref : https://github.com/andrei-markeev/camljs-console