add proper parens around unary expressions

fix #34

diff --git a/lib/output.js b/lib/output.js
index ab44222..46ed126 100644 (file)
--- a/lib/output.js
+++ b/lib/output.js
@@ -410,6 +410,11 @@ function OutputStream(options) {
         return first_in_statement(output);
     });
 
+    PARENS(AST_Unary, function(output){
+        var p = output.parent();
+        return p instanceof AST_PropAccess;
+    });
+
     PARENS(AST_Seq, function(output){
         var p = output.parent();
         return p instanceof AST_Call             // (foo, bar)() or foo(1, (2, 3), 4)