Well, you can, but why? The lib is at https://github.com/ct-js/ct-js, in the app/data/ct.release folder. The modules are in app/data/ct.libs. But they all are supposed to be used as templates by ct.IDE and you’ll have to find how to define types, rooms and such by yourself.
There is a plan to make an npm module with a standalone exporter, but it will be geared more for CI/CD tasks and probably not what you need.
Anyways, why not using ct with an IDE? It is cross-platform, easy to use and allows you to make great games faster. The editor itself was made because of frustration of working with game frameworks that had no IDEs.