Q:

How can I configure standardised indentation using JsHint and the wro4j plugin? 

I would like to force 4 spaces as the default and required indentation for my whole js codebase. 
I have managed to the jshint wro4j plugin to work and obey options:
<options>browser,newcap,noarg,nonew,undef,trailing</options>

However, for indentation, I need to specify the spaces required:
/*jshint indent:4 */

but there appears to be no facility to do this?   
I'm not sure how I should be applying this option correctly as any of the layouts I've tried throw errors as being invalid options. 

A:

You can force the indentation rule check by adding the following rules:
<option>indent,white</option>

By default the indentation is set to 4 characters.  If you want to set a different value, use this:
<option>indent=2,white</option>

