enhance unused (#4098)

2020-09-12 18:05:43 +01:00
parent d7456a2dc2
commit d33a3a3253
2 changed files with 22 additions and 1 deletions
--- a/lib/compress.js
+++ b/lib/compress.js
@@ -4400,6 +4400,7 @@ merge(Compressor.prototype, {
            }
            return scan_ref_scoped(node, descend, true);
        });
+        tw.directives = Object.create(compressor.directives);
        self.walk(tw);
        // pass 2: for every used symbol we need to walk its
        // initialization code to figure out if it uses other