Merge pull request #10 from SocketDev/make-transform-optional

Make transformer.transform optional

Author: feross

lib/transform-stream.js

@@ -48,7 +48,11 @@ class TransformStreamSource {
         controller.close()
         return
       }
-      await this.transformer.transform(data.value, wrappedController)
+      if (this.transformer.transform) {
+        await this.transformer.transform(data.value, wrappedController)
+      } else {
+        wrappedController.enqueue(data.value)
+      }
     }
   }