diff --git a/package.json b/package.json
index e9a0e2b..28f66f0 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "rx-nostr",
-  "version": "1.8.1",
+  "version": "2.0.0",
   "description": "A library based on RxJS, which allows Nostr applications to easily communicate with relays.",
   "author": "penpenpng",
   "keywords": [
diff --git a/src/__test__/keep-alive.test.ts b/src/__test__/keep-alive.test.ts
index 5c3bfb2..954c9c1 100644
--- a/src/__test__/keep-alive.test.ts
+++ b/src/__test__/keep-alive.test.ts
@@ -2,7 +2,7 @@ import { afterEach, beforeEach, describe, expect, test } from "vitest";
 import { createMockRelay, type MockRelay } from "vitest-nostr";
 
 import { createRxForwardReq, createRxNostr, RxNostr } from "../index.js";
-import { disposeMockRelay, faker, spyEvent, stateWillBe } from "./helper.js";
+import { disposeMockRelay, faker, stateWillBe } from "./helper.js";
 
 describe("", () => {
   const DEFAULT_RELAY = "ws://localhost:1234";
diff --git a/src/__test__/operator.test.ts b/src/__test__/operator.test.ts
index 115737f..84c5abf 100644
--- a/src/__test__/operator.test.ts
+++ b/src/__test__/operator.test.ts
@@ -87,8 +87,8 @@ test("tie()", async () => {
       }))
     );
 
-    // eslint-disable-next-line @typescript-eslint/no-explicit-any
     expectObservable(packet$).toEqual(
+      // eslint-disable-next-line @typescript-eslint/no-explicit-any
       of<any[]>(
         {
           ...packets[0],
diff --git a/src/rx-nostr/utils.ts b/src/rx-nostr/utils.ts
index acce792..9c3986a 100644
--- a/src/rx-nostr/utils.ts
+++ b/src/rx-nostr/utils.ts
@@ -1,6 +1,4 @@
-import { filter, type OperatorFunction } from "rxjs";
-
-import type { LazyFilter, LazyREQ, MessagePacket } from "../packet.js";
+import type { LazyFilter, LazyREQ } from "../packet.js";
 import type { RxReq } from "../req.js";
 import type {
   AcceptableDefaultRelaysConfig,