How to create low code based workflow setup in nodejs?

Question

I want to create a workflow automation where an activity comes in and user can setup a multilevel workflow.

For frontend i am using https://reactflow.dev

How to structure things in nodejs backend. Things like database, accessing control flow statements, statements which requires crons.

user_1833961 · Answer

You also may want to have a look at node-red.

It's an open-source product that does exactly that.

There's a set of built-in nodes.
You can develop your own nodes, or import 3rd party ones. Which are stored in NPM.
You can also just create a node with javascript or typescript code in it, on the fly.