用于电子应用程序的Sails.JS或Loopback

I am developing a image capture/storage software for school photographers that uses an angular front-end using electron to make it a native cross-platform desktop app. The app will need to have online and offline access. I will run a database on the client machine while offline and when online access is obtained it will sync to a cloud based database. In the future I want to be able to have the option for enterprise customers to run the application on premise and link to their own databases as well. I am developing a image capture/storage softwar