fix corner case in reduce_vars (#4490)

fixes #4489
2021-01-01 04:56:13 +00:00
parent 311c074622
commit 2dbafbb4ee
3 changed files with 30 additions and 8 deletions
--- a/lib/compress.js
+++ b/lib/compress.js
@@ -9427,8 +9427,7 @@ merge(Compressor.prototype, {
                        }
                    }));
                } else {
-                    value = fixed.optimize(compressor);
-                    if (value === fixed) value = value.transform(new TreeTransformer(function(node, descend) {
+                    value = fixed.optimize(compressor).transform(new TreeTransformer(function(node, descend) {
                        if (node instanceof AST_Scope) return node;
                        node = node.clone();
                        descend(node, this);