v3.3.22

fixes #3082

lib/compress.js

@@ -1348,8 +1348,9 @@ merge(Compressor.prototype, {
                 if (expr instanceof AST_VarDef) {
                     var def = expr.name.definition();
                     if (!member(expr.name, def.orig)) return;
-                    var declared = def.orig.length - def.eliminated;
                     var referenced = def.references.length - def.replaced;
+                    if (!referenced) return;
+                    var declared = def.orig.length - def.eliminated;
                     if (declared > 1 && !(expr.name instanceof AST_SymbolFunarg)
                         || (referenced > 1 ? mangleable_var(expr) : !compressor.exposed(def))) {
                         return make_node(AST_SymbolRef, expr.name, expr.name);

package.json

@@ -3,7 +3,7 @@
   "description": "JavaScript parser, mangler/compressor and beautifier toolkit",
   "author": "Mihai Bazon <mihai.bazon@gmail.com> (http://lisperator.net/)",
   "license": "BSD-2-Clause",
-  "version": "3.3.21",
+  "version": "3.3.22",
   "engines": {
     "node": ">=0.8.0"
   },

test/sandbox.js

@@ -40,7 +40,7 @@ function safe_log(arg, level) {
 }
 
 function strip_func_ids(text) {
-    return text.toString().replace(/F[0-9]{6}N/g, "<F<>N>");
+    return ("" + text).replace(/F[0-9]{6}N/g, "<F<>N>");
 }
 
 var context;