tree transformer api (WIP)

tmp/test-node.js

@@ -9,15 +9,31 @@ var filename = process.argv[2];
 var code = fs.readFileSync(filename, "utf8");
 
 var ast = UglifyJS.parse(code);
-ast.figure_out_scope();
-ast = ast.squeeze(UglifyJS.Compressor());
 
-ast.compute_char_frequency();
-UglifyJS.base54.sort();
+var tt = new UglifyJS.TreeTransformer(
+    function before(node, descend) {
+        if (node instanceof UglifyJS.AST_Var) {
+            //return new UglifyJS.AST_EmptyStatement(node);
+            return UglifyJS.MAP.skip;
+        }
+    },
+    function after(node) {
+        console.log("After ", node.TYPE);
+    }
+);
 
-ast.figure_out_scope();
-ast.scope_warnings();
-ast.mangle_names();
+var x = ast.transform(tt);
+sys.print(x.print_to_string({ beautify: true }));
 
-sys.error(UglifyJS.base54.get());
-sys.print(ast.print_to_string({ beautify: true }));
+// ast.figure_out_scope();
+// ast = ast.squeeze(UglifyJS.Compressor());
+
+// ast.compute_char_frequency();
+// UglifyJS.base54.sort();
+
+// ast.figure_out_scope();
+// ast.scope_warnings();
+// ast.mangle_names();
+
+// sys.error(UglifyJS.base54.get());
+// sys.print(ast.print_to_string({ beautify: true }));