fix corner case in merge_vars (#4550)

fixes #4548
2021-01-12 19:48:46 +00:00
parent 90017051f2
commit c11a748908
2 changed files with 28 additions and 0 deletions
--- a/lib/compress.js
+++ b/lib/compress.js
@@ -4979,7 +4979,9 @@ merge(Compressor.prototype, {
                    var marker = new TreeWalker(function(node) {
                        if (node instanceof AST_Destructured) return;
                        if (node instanceof AST_DefaultValue) {
+                            push();
                            node.value.walk(tw);
+                            pop();
                            node.name.walk(marker);
                        } else if (node instanceof AST_DestructuredKeyVal) {
                            if (node.key instanceof AST_Node) {