Ah.. nope, SuperDevMode is a very recent invention from GWT 2.5 - it uses Chrome's new source map tech to allow Chrome to overlay and debug your java code insid

Ah.. nope, SuperDevMode is a very recent invention from GWT 2.5 - it uses Chrome's new source map tech to allow Chrome to overlay and debug your java code inside Chrome itself. Firefox will soon have the functionality too which will let Firebug work directly on Java code. https://developers.google.com/web-toolkit/articles/superdevmode https://developers.google.com/web-toolkit/articles/superdevm... I agree very much with your last statement though - hacking something together with no concern for future changes/requirements in Java nearly always ends in catastrophe.