guppy allows you to immediately run JavaScript code.

You can use it as a scratchpad to quickly execute and text JavaScript code.

guppy ✨ not only allow you run JavaScript code, but also let you run JavaScript within the context of a Sails application.

You just open the Sails application in guppy by hitting Ctrl/Cmd + O, select the Sails project and voila! You can now have access to you models and helpers.

Open local Sails project

Testing Waterline queries

Testing helpers

You can check out the running code section of the guppy docs for more info.