Objects in BPMN-JS

I’m developing a react application using the BPMN-JS library, all the data will be saved in SQL database.
I need to know all the objects provided by this library and their proprities.
Any help, please?
Best Regards

What kind of objects do you mean? What data do you want to save?

like gateways, started events, tasks …

bpmn-js is a library which allows you to model BPMN diagrams. So if you want to store them, you can use the saveXML API. Have a look at this thread.