Avoid running drop_unused in nodes that aren't scopes. Closes #1457

terser · Oct 16, 2023 · e0e5b7e · e0e5b7e
1 parent 1a99798
commit e0e5b7e
Showing 1 changed file with 2 additions and 0 deletions.
diff --git a/lib/compress/drop-unused.js b/lib/compress/drop-unused.js
@@ -109,6 +109,8 @@ const r_keep_assign = /keep_assign/;
 AST_Scope.DEFMETHOD("drop_unused", function(compressor) {
     if (!compressor.option("unused")) return;
     if (compressor.has_directive("use asm")) return;
+    if (!this.variables) return; // not really a scope (eg: AST_Class)
+
     var self = this;
     if (self.pinned()) return;
     var drop_funcs = !(self instanceof AST_Toplevel) || compressor.toplevel.funcs;