More assertion

swc-project · Oct 18, 2022 · da574ae · da574ae
1 parent 204d680
commit da574ae
Showing 1 changed file with 2 additions and 0 deletions.
diff --git a/crates/swc_ecma_transforms_optimization/src/simplify/dce/mod.rs b/crates/swc_ecma_transforms_optimization/src/simplify/dce/mod.rs
@@ -834,6 +834,8 @@ impl VisitMut for TreeShaker {
     }
 
     fn visit_mut_module(&mut self, m: &mut Module) {
+        debug_assert_valid(m);
+
         let _tracing = span!(Level::ERROR, "tree-shaker", pass = self.pass).entered();
 
         if self.bindings.is_empty() {