It's surprising to me that Gmail doesn't take more advantage of code splitting and lazy bundle loading -- I wonder if it's common practice among "modern" JS apps (i.e. the Angular-using ones like Cloud Console), but difficult to do with GWT.
This article barely mentions GWT. Is Gmail still officially a GWT app? Wappalyzer seems to think so, if not GWT by name, it identifies the programming language as Java.
