fix corner case in dead_code (#4984)

2021-05-30 04:07:55 +01:00
parent b9d5bba5fb
commit 7e88d52fae
2 changed files with 35 additions and 3 deletions
--- a/lib/compress.js
+++ b/lib/compress.js
@@ -11085,9 +11085,7 @@ merge(Compressor.prototype, {
                        ]).optimize(compressor);
                    }
                }
-            } else if (self.left instanceof AST_SymbolRef && all(self.left.definition().orig, function(sym) {
-                return !(sym instanceof AST_SymbolConst);
-            })) {
+            } else if (self.left instanceof AST_SymbolRef && can_drop_symbol(self.left, compressor)) {
                var parent;
                if (self.operator == "=" && self.left.equivalent_to(self.right)
                    && !((parent = compressor.parent()) instanceof AST_UnaryPrefix && parent.operator == "delete")) {