implement bulk export variation

src/declarative.js

@@ -134,15 +134,24 @@
       //    By disaling this module write-protection we gain performance.
       //    It could be useful to allow an option to enable or disable this.
       module.locked = true;
-      moduleObj[name] = value;
+
+      // export({name: value})
+      if (typeof name == 'object') {
+        for (var p in name)
+          moduleObj[p] = name[p];
+      }
+      // export(name, value)
+      else {
+        moduleObj[name] = value;
+      }
 
       for (var i = 0, l = module.importers.length; i < l; i++) {
         var importerModule = module.importers[i];
         if (!importerModule.locked) {
-          for (var j = 0; j < importerModule.dependencies.length; ++j) {
-            if (importerModule.dependencies[j] === module) {
-              importerModule.setters[j](moduleObj);
-            }
+          for (var j = 0; j < importerModule.dependencies.length; ++j) {
+            if (importerModule.dependencies[j] === module) {
+              importerModule.setters[j](moduleObj);
+            }
           }
         }
       }