Merge pull request #79 from yoshokatana/master

update the sourceMappingURL (mergeable)

Author: kevva

tasks/filerev.js

@@ -74,13 +74,18 @@ module.exports = function (grunt) {
         var sourceMap = false;
         if (ext === '.js' || ext === '.css') {
           var map = file + '.map';
-          resultPath += '.map';
+          var resultPathMap = resultPath + '.map';
           if (grunt.file.exists(map)) {
             if (move) {
-              fs.renameSync(map, resultPath);
+              fs.renameSync(map, resultPathMap);
             } else {
-              grunt.file.copy(map, resultPath);
+              grunt.file.copy(map, resultPathMap);
             }
+
+            // rewrite the sourceMappingURL in files
+            var fileContents = grunt.file.read(resultPath, {encoding: 'utf8'});
+            var newSrcMap = fileContents.replace('//# sourceMappingURL=' + path.basename(file) + '.map', '//# sourceMappingURL=' + path.basename(resultPathMap));
+            grunt.file.write(resultPath, newSrcMap, {encoding: 'utf8'});
             sourceMap = true;
           }
         }

test/test.js

@@ -46,6 +46,13 @@ it('should use same revision as .js source for the .map', function () {
   assert(revisioned === original);
 });
 
+it('should point the .js sourceMappingURL to the revisioned .map', function () {
+  var file = 'test/fixtures/math.js';
+  var map = 'math.6272e937.js.map';
+  var revisioned = fs.readFileSync(hashes[file], {encoding: 'utf8'});
+  assert(revisioned.indexOf('//# sourceMappingURL=' + map) !== -1);
+});
+
 it('should revision .js file ok without any .map', function () {
   var file = 'test/fixtures/physics.js';
   var original = fs.statSync(file).size;