refactor: replace isomorphic-ws with unws

package.json

@@ -154,7 +154,7 @@
     "@scure/bip39": "1.2.0",
     "@wagmi/chains": "0.2.16",
     "abitype": "0.7.1",
-    "isomorphic-ws": "5.0.0",
+    "unws": "0.2.1",
     "ws": "8.12.0"
   },
   "devDependencies": {

src/clients/transports/webSocket.test.ts

@@ -1,4 +1,4 @@
-import { WebSocket } from 'isomorphic-ws'
+import { WebSocket } from 'unws'
 import { assertType, describe, expect, test } from 'vitest'
 
 import { localWsUrl } from '../../_test/index.js'

src/clients/transports/webSocket.ts

@@ -1,4 +1,4 @@
-import type { WebSocket } from 'isomorphic-ws'
+import type { WebSocket } from 'unws'
 
 import { UrlRequiredError } from '../../errors/index.js'
 import type { Hash } from '../../types/index.js'

src/utils/rpc.test.ts

@@ -1,5 +1,5 @@
 import type { IncomingHttpHeaders } from 'http'
-import WebSocket from 'isomorphic-ws'
+import { WebSocket } from 'unws'
 import { describe, expect, test, vi } from 'vitest'
 
 import { localHttpUrl } from '../_test/constants.js'

src/utils/rpc.ts

@@ -1,4 +1,4 @@
-import type { MessageEvent, WebSocket } from 'isomorphic-ws'
+import type { MessageEvent, WebSocket } from 'unws'
 
 import {
   HttpRequestError,
@@ -145,17 +145,7 @@ export async function getSocket(url_: string) {
   // If the socket already exists, return it.
   if (socket) return socket
 
-  let WebSocket = await import('isomorphic-ws')
-  // Workaround for Vite.
-  // https://github.com/vitejs/vite/issues/9703
-  // TODO: Remove when issue is resolved.
-  if (
-    (WebSocket as unknown as { default?: typeof WebSocket }).default
-      ?.constructor
-  )
-    WebSocket = (WebSocket as unknown as { default: typeof WebSocket }).default
-  else WebSocket = WebSocket.WebSocket
-
+  const { WebSocket } = await import('unws')
   const webSocket = new WebSocket(url)
 
   // Set up a cache for incoming "synchronous" requests.