diff --git a/apps/relay/src/index.ts b/apps/relay/src/index.ts
index 570c77381..56fa1f28d 100644
--- a/apps/relay/src/index.ts
+++ b/apps/relay/src/index.ts
@@ -1,6 +1,6 @@
+import { mkdirSync } from "node:fs";
 import { createConsole, createConsoleEntryFormatter } from "@evolu/common";
 import { createRelayDeps, createRunner, startRelay } from "@evolu/nodejs";
-import { mkdirSync } from "fs";
 
 // Ensure the database is created in a predictable location for Docker.
 mkdirSync("data", { recursive: true });
diff --git a/packages/vue/src/useOwner.ts b/packages/vue/src/useOwner.ts
index 8e19ff3f6..76d3bb70c 100644
--- a/packages/vue/src/useOwner.ts
+++ b/packages/vue/src/useOwner.ts
@@ -12,5 +12,6 @@ export const useOwner = (owner: SyncOwner | null): void => {
 
   if (owner == null) return;
 
+  // biome-ignore lint/correctness/useHookAtTopLevel: intentional
   evolu.useOwner(owner);
 };
diff --git a/packages/web/test/Task.test.ts b/packages/web/test/Task.test.ts
index 06bfd276b..4dcc3d252 100644
--- a/packages/web/test/Task.test.ts
+++ b/packages/web/test/Task.test.ts
@@ -62,8 +62,9 @@ describe("createRunner", () => {
       const console = testCreateConsole();
       await using _run = createRunner({ console });
 
-      const handler = addedListeners.get("error")!;
-      handler(new ErrorEvent("error", { error: new Error("test error") }));
+      const handler = addedListeners.get("error");
+      expect(handler).toBeDefined();
+      handler?.(new ErrorEvent("error", { error: new Error("test error") }));
 
       const entries = console.getEntriesSnapshot();
       expect(entries).toHaveLength(1);
@@ -79,8 +80,9 @@ describe("createRunner", () => {
       const console = testCreateConsole();
       await using _run = createRunner({ console });
 
-      const handler = addedListeners.get("unhandledrejection")!;
-      handler(
+      const handler = addedListeners.get("unhandledrejection");
+      expect(handler).toBeDefined();
+      handler?.(
         new PromiseRejectionEvent("unhandledrejection", {
           promise: Promise.resolve(),
           reason: new Error("test rejection"),