Use content.outputFilePath and use pass sourcemap

Author: mohsen1

index.js

@@ -21,7 +21,7 @@ module.exports = function(source, map) {
   // source variable. Check API for more details.
   creator.create(this.resourcePath, source).then(content => {
     // Emit the created content as well
-    this.emitFile(this.resourcePath + '.d.ts', content.contents || ['']);
+    this.emitFile(content.outputFilePath, content.contents || [''], map);
     content.writeFile().then(_ => {
       callback(null, source, map);
     });