electron react and express with modbus

i want to make desktop app using electron, as frontend i need to use React and i use express as a backend to save into database. the backend also contain modbus that connected to external device. My problem to get started is how to bundle in one .exe file for frontend and backend, for now i just did builded .exe one by one, i can't do how to build it into one .exe.
and about the internal database, i need to bundle it without any installation.
this is my depedency react, express, jsmodbus, socket.io etc.
need help to the best solution to bundle it in one .exe file without without being separated