The only thing I've used a script loader for modules that may or may not be needed at runtime. For instance, UI components. My application may have 50 UI comp

The only thing I've used a script loader for modules that may or may not be needed at runtime. For instance, UI components. My application may have 50 UI components but a page may only use 5 of those. To concat all 50 components into one script would be wasteful.