docs: function (output) {
                // Manually convert paths to relative, because LESS
                // can make tose absolute for complex cases.
                var map = JSON.parse(output);
                var dir = path.dirname(context.pathname);
                map.sources.forEach(function (file, idx) {
                  var rel = path.relative(dir, file);
                  if (path.sep === '\\') { rel = rel.replace('\\', '/'); }
                  map.sources[idx] = rel;
                });
  
                self.map = JSON.stringify(map);
              }