diff --git a/packages/shell/src/services/uix.ts b/packages/shell/src/services/uix.ts
index 0a7d05a..5cf4c47 100644
--- a/packages/shell/src/services/uix.ts
+++ b/packages/shell/src/services/uix.ts
@@ -1,3 +1,5 @@
+import { EventEmitter } from 'node:events'
+
 const uinRegex = /\d+/
 
 const isUin = (uin: unknown) =>
@@ -7,33 +9,33 @@ const isUin = (uin: unknown) =>
 const isUid = (uid: unknown) =>
   typeof uid === 'string' && uid.length === 24 && uid.startsWith('u_')
 
-const map: Record<string, string> = {}
+export class Uix extends EventEmitter {
+  map: Record<string, string> = {}
 
-const add = (uid: string, uin: string) => {
-  if (!uid || !uin) return
-  map[uid] = uin
-  map[uin] = uid
+  isUin = isUin
+  isUid = isUid
+
+  add = (uid: string, uin: string) => {
+    if (!isUid(uid) || !isUin(uin)) return
+    this.map[uid] = uin
+    this.map[uin] = uid
+    this.emit(uin, uid)
+    this.emit(uid, uin)
+  }
+
+  getUin = (uid: string) => {
+    if (!isUid(uid)) return undefined
+    const uin = this.map[uid]
+    if (!isUin(uin)) return undefined
+    return uin
+  }
+
+  getUid = (uin: string) => {
+    if (!isUin(uin)) return undefined
+    const uid = this.map[uin]
+    if (!isUid(uid)) return undefined
+    return uid
+  }
 }
 
-const getUin = (uid: string) => {
-  if (!isUid(uid)) return undefined
-  const uin = map[uid]
-  if (!isUin(uin)) return undefined
-  return uin
-}
-
-const getUid = (uin: string) => {
-  if (!isUin(uin)) return undefined
-  const uid = map[uin]
-  if (!isUid(uid)) return undefined
-  return uid
-}
-
-export const uix = {
-  map,
-  add,
-  isUin,
-  isUid,
-  getUin,
-  getUid,
-}
+export const uix = new Uix()