how to try SourceMaps with GWT?

Question

https://plus.google.com/u/1/110412141990454266397/posts/Nvr6Se6eAPh

does anyone know how to try it with last build of GWT (from svn) and Chrome Canary?

Answer 1

See http://code.google.com/p/google-web-toolkit/wiki/SourceMaps

it's only a matter of adding the following to your gwt.xml:

<set-property name="compiler.useSourceMaps" value="true" />

The compiler will then output source maps and the necessary triggers in the JS code (currently only for the safari permutation, to target Chrome only).

Beware, it's rather resource consuming! Be prepared to bump your -Xmx et al.