improve code reuse (#2542)

2017-12-01 03:40:46 +08:00
parent c58d3936a3
commit 172079a47f
4 changed files with 37 additions and 30 deletions
--- a/lib/propmangle.js
+++ b/lib/propmangle.js
@@ -84,7 +84,7 @@ function reserve_quoted_keys(ast, reserved) {
 function addStrings(node, add) {
    node.walk(new TreeWalker(function(node) {
        if (node instanceof AST_Sequence) {
-            addStrings(node.expressions[node.expressions.length - 1], add);
+            addStrings(node.tail_node(), add);
        } else if (node instanceof AST_String) {
            add(node.value);
        } else if (node instanceof AST_Conditional) {