fix corner case in hoist_props (#3869)

fixes #3868
2020-05-10 10:35:24 +01:00
parent 33f3b0c1d9
commit c4c9c6d37d
2 changed files with 29 additions and 1 deletions
--- a/lib/compress.js
+++ b/lib/compress.js
@@ -4927,7 +4927,7 @@ merge(Compressor.prototype, {
            if (def.single_use) return;
            if (top_retain(def)) return;
            if (sym.fixed_value() !== right) return;
-            return right instanceof AST_Object;
+            return right instanceof AST_Object && right.properties.length > 0;
        }
    });