fix iteration over object with inherited properties (#2068)

fixes #2055
2017-06-08 03:27:03 +08:00
parent 9db0695b10
commit 9c306406f1
3 changed files with 22 additions and 3 deletions
--- a/lib/compress.js
+++ b/lib/compress.js
@@ -1419,7 +1419,7 @@ merge(Compressor.prototype, {
            });
            if (value && typeof value == "object") {
                var props = [];
-                for (var key in value) {
+                for (var key in value) if (HOP(value, key)) {
                    props.push(make_node(AST_ObjectKeyVal, orig, {
                        key: key,
                        value: to_node(value[key], orig)