fix corner case in unused (#4850)

fixes #4849
2021-04-07 23:31:15 +01:00
parent a37ca558dd
commit ebe4e1ad28
3 changed files with 26 additions and 2 deletions
--- a/lib/compress.js
+++ b/lib/compress.js
@@ -9393,6 +9393,7 @@ merge(Compressor.prototype, {
            var seq = lift_sequence_in_expression(self, compressor);
            if (seq !== self) return seq.optimize(compressor);
        }
+        if (compressor.option("unused")) drop_unused_call_args(self, compressor);
        if (compressor.option("unsafe")) {
            var exp = self.expression;
            if (is_undeclared_ref(exp)) {