Fix bug

Author: HairyRabbit

lib/loader.js

@@ -115,9 +115,13 @@ module.exports = function(content, map) {
 			map = result.map;
 			if(map.sources) {
 				map.sources = map.sources.map(function(source) {
-					const output = source.split("!").pop().replace(/\\/g, '/');
-					if(!query.sourceMapSourcesMapping)  return output
-					return query.sourceMapSourcesMapping(output)
+					return (query.sourceMapSourcesDomain || '') +
+						source.split("!")
+							.pop()
+							.replace(/\\/g, '/')
+							.replace(/(\w):\//, function(_, id) {
+							    return id.toUpperCase() + ':\/';
+							});
 				}, this);
 				map.sourceRoot = "";
 			}