Set the base under which package locale resources are served.
In the browser this is a URL prefix, e.g. '/resources/locales/'. In node it is a DIRECTORY.
Unlike a resource ROOT it names the kind itself, so it holds <pkg>/<relPath> directly with no
locales/ segment — leave it unset in node unless the host stages the files that way.
Set the base under which package locale resources are served.
In the browser this is a URL prefix, e.g.
'/resources/locales/'. In node it is a DIRECTORY. Unlike a resource ROOT it names the kind itself, so it holds<pkg>/<relPath>directly with nolocales/segment — leave it unset in node unless the host stages the files that way.