fix corner case in merge_vars (#4402)

fixes #4401
2020-12-18 04:20:43 +00:00
parent 1b646d3bc4
commit d2c50ace99
3 changed files with 31 additions and 2 deletions
--- a/lib/compress.js
+++ b/lib/compress.js
@@ -4915,7 +4915,11 @@ merge(Compressor.prototype, {
                        argname.mark_symbol(marker, scanner);
                    });
                }
-                walk_body(node, tw);
+                if (node instanceof AST_Arrow && node.value) {
+                    node.value.walk(tw);
+                } else {
+                    walk_body(node, tw);
+                }
                pop();
                return true;
            }