Where is electron-main.js

before today I use theia 1.32.0 blueprint. and there is a eletron-main.js file in src-gen folder.
I add some loggic in electron-main. today I update my app to theia blueprint 1.42.1. I do not find electron-main. is the start method in electron-main.js still exist?

Since the electron-main.js was actually always part of the backend, it is now getting generated into src-gen/backend. See also our breaking changes.