fix corner case in reduce_vars (#4459)

fixes #4458
2020-12-25 14:50:11 +00:00
parent a1b2735dd8
commit 95aea0e33c
2 changed files with 31 additions and 0 deletions
--- a/lib/compress.js
+++ b/lib/compress.js
@@ -879,6 +879,13 @@ merge(Compressor.prototype, {
            pop(tw);
            return true;
        });
+        def(AST_DefaultValue, function(tw) {
+            this.name.walk(tw);
+            push(tw);
+            this.value.walk(tw);
+            pop(tw);
+            return true;
+        });
        def(AST_Defun, reduce_defun);
        def(AST_Do, function(tw) {
            var saved_loop = tw.in_loop;