diff --git a/packages/polyfill/extend.js b/packages/polyfill/extend.js
new file mode 100644
index 0000000..6c11879
--- /dev/null
+++ b/packages/polyfill/extend.js
@@ -0,0 +1,12 @@
+import './index.js';
+
+/**
+ * polyfill for WebSocket
+ */
+import { WebSocket as _WebSocket } from './web/websocket';
+if (!globalThis.WebSocket) {
+  globalThis.WebSocket = _WebSocket;
+  WebSocket = _WebSocket;
+}
+
+export { WebSocket } from './web/websocket';
diff --git a/packages/polyfill/index.js b/packages/polyfill/index.js
index 05fec96..c2efcb0 100644
--- a/packages/polyfill/index.js
+++ b/packages/polyfill/index.js
@@ -8,6 +8,5 @@ export { TextDecoder, TextEncoder } from './web/encoding';
 export { XMLHttpRequest } from './web/xhr';
 export { fetch, Headers, Request, Response } from './web/fetch';
 export { crypto } from './web/crypto';
-export { WebSocket } from './web/websocket';
 export { LocalStorage } from './web/storage';
 export { navigator } from './web/navigator';
diff --git a/packages/polyfill/node/index.js b/packages/polyfill/node/index.js
index b262177..5ab4a29 100644
--- a/packages/polyfill/node/index.js
+++ b/packages/polyfill/node/index.js
@@ -1,12 +1,12 @@
 import * as harmonyFS from './fs';
-import * as process from 'process/browser'
+// import * as process from 'process/browser'
 
 if (!globalThis.fs) {
   globalThis.fs = harmonyFS;
 }
 
 if (!globalThis.process) {
-  globalThis.process = process;
+  globalThis.process = {};
 }
 
 if (!globalThis.process.versions) {
@@ -19,14 +19,14 @@ if (!globalThis.process.versions.node) {
 
 globalThis['eval'] = function (functionBody) {
   if (functionBody == 'require') {
-    return function protoRequire(moduleName){
+    return function protoRequire(moduleName) {
       if (moduleName == 'fs') {
         return harmonyFS;
-      }else{
-        return __webpack_require__(moduleName)
+      } else {
+        // eslint-disable-next-line
+        return __webpack_require__(moduleName);
       }
     };
   }
   return eval(functionBody);
 };
-
diff --git a/packages/polyfill/web/encoding.js b/packages/polyfill/web/encoding.js
index 55ce986..c7a7c68 100644
--- a/packages/polyfill/web/encoding.js
+++ b/packages/polyfill/web/encoding.js
@@ -2,7 +2,6 @@ import util from '@ohos.util';
 /**
  * since: API 7
  */
-const TextDecoder = util.TextDecoder;
-const TextEncoder = util.TextEncoder;
+const TextDecoder = util?.TextDecoder;
+const TextEncoder = util?.TextEncoder;
 export { TextDecoder, TextEncoder };
-
diff --git a/packages/polyfill/web/index.js b/packages/polyfill/web/index.js
index 2ad7230..b9e25a7 100644
--- a/packages/polyfill/web/index.js
+++ b/packages/polyfill/web/index.js
@@ -52,15 +52,6 @@ if (!globalThis.crypto) {
   globalThis.crypto = crypto;
 }
 
-/**
- * polyfill for WebSocket
- */
-import { WebSocket as _WebSocket } from './websocket';
-if (!globalThis.WebSocket) {
-  globalThis.WebSocket = _WebSocket;
-  WebSocket = _WebSocket;
-}
-
 /**
  * polyfill for Canvas
  */
diff --git a/packages/polyfill/web/url.js b/packages/polyfill/web/url.js
index e208f89..d77dcb7 100644
--- a/packages/polyfill/web/url.js
+++ b/packages/polyfill/web/url.js
@@ -3,6 +3,6 @@ import url from '@ohos.url';
 /**
  * since: API 7
  */
-const URL = url.URL;
-const URLSearchParams = url.URLSearchParams;
+const URL = url?.URL;
+const URLSearchParams = url?.URLSearchParams;
 export { URL, URLSearchParams };