diff --git a/ui/src/ui/control-ui-vite-config.node.test.ts b/ui/src/ui/control-ui-vite-config.node.test.ts
index ffb6d470b6f..764c0f1ac84 100644
--- a/ui/src/ui/control-ui-vite-config.node.test.ts
+++ b/ui/src/ui/control-ui-vite-config.node.test.ts
@@ -55,7 +55,9 @@ describe("Control UI Vite config", () => {
   it("uses a browser-safe redactor for shared tool display imports", async () => {
     const plugin = controlUiBrowserOnlySharedModuleAliases();
     const resolveId = plugin.resolveId;
-    expect(typeof resolveId).toBe("function");
+    if (typeof resolveId !== "function") {
+      throw new Error("Expected browser-only shared module alias plugin to expose resolveId");
+    }
 
     const resolved = await resolveId.call(
       {} as never,