Always output comment newlines, fix edge case with function param output

tests/node_tests/stream/__snapshots__/jsfmt.spec.js.snap

@@ -67,8 +67,8 @@ class MyWriteStream extends stream.Writable {}
 class MyDuplex extends stream.Duplex {}
 class MyTransform extends stream.Duplex {}
 
-new MyReadStream().pipe(new MyDuplex()).pipe(new MyTransform()).pipe(
-  new MyWriteStream()
-);
+new MyReadStream().pipe(
+  new MyDuplex()
+).pipe(new MyTransform()).pipe(new MyWriteStream());
 "
 `;