From 3d4808c5a2356a6a453bff67686deecd365f2b99 Mon Sep 17 00:00:00 2001
From: "Ashley (Scirra)" <ashley@scirra.com>
Date: Wed, 31 Aug 2016 12:10:53 +0100
Subject: [PATCH] Add debug option to mangle_properties()

Causes name mangling to perform "name" -> "_$name$_".
---
 lib/propmangle.js | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/lib/propmangle.js b/lib/propmangle.js
index 3923baa6..2089699c 100644
--- a/lib/propmangle.js
+++ b/lib/propmangle.js
@@ -66,7 +66,8 @@ function mangle_properties(ast, options) {
         cache : null,
         only_cache : false,
         regex : null,
-        ignore_quoted : false
+        ignore_quoted : false,
+        debug : false
     });
 
     var reserved = options.reserved;
@@ -83,6 +84,7 @@ function mangle_properties(ast, options) {
 
     var regex = options.regex;
     var ignore_quoted = options.ignore_quoted;
+    var debug = options.debug;
 
     var names_to_mangle = [];
     var unmangleable = [];
@@ -174,6 +176,9 @@ function mangle_properties(ast, options) {
         if (!should_mangle(name)) {
             return name;
         }
+        
+        if (debug)
+            return "_$" + name + "$_";
 
         var mangled = cache.props.get(name);
         if (!mangled) {