diff --git a/packages/compiler/src/frontend/npm-static-bundled-esm.ts b/packages/compiler/src/frontend/npm-static-bundled-esm.ts
index 53564d787..d5635bc2e 100644
--- a/packages/compiler/src/frontend/npm-static-bundled-esm.ts
+++ b/packages/compiler/src/frontend/npm-static-bundled-esm.ts
@@ -664,7 +664,8 @@ export function lowerBundledEsmInits(
         text: `(${init}${getterText(value)})`,
       });
     }
-    deadDeclarators.add(d).add(memoDecl);
+    deadDeclarators.add(d);
+    deadDeclarators.add(memoDecl);
     loaderSpans.push({ start: d.getStart(sf), end: d.getEnd() });
     lowered.add(target);
   }