diff --git a/src/core/packet/client.ts b/src/core/packet/client.ts
index 88164cef..c00747a2 100644
--- a/src/core/packet/client.ts
+++ b/src/core/packet/client.ts
@@ -96,7 +96,7 @@ export class PacketClient {
         }
     }
 
-    async registerCallback(trace_id: string, type: string, callback: (json: RecvPacketData) => Promise<void>): Promise<void> {
+    private async registerCallback(trace_id: string, type: string, callback: (json: RecvPacketData) => Promise<void>): Promise<void> {
         this.cb.put(createHash('md5').update(trace_id).digest('hex') + type, callback);
     }
 
@@ -113,7 +113,7 @@ export class PacketClient {
         this.websocket.send(JSON.stringify(initMessage));
     }
 
-    async sendCommand(cmd: string, data: string, trace_id: string, rsp: boolean = false, timeout: number = 5000, sendcb: (json: RecvPacketData) => void = () => {
+    private async sendCommand(cmd: string, data: string, trace_id: string, rsp: boolean = false, timeout: number = 5000, sendcb: (json: RecvPacketData) => void = () => {
     }): Promise<RecvPacketData> {
         return new Promise<RecvPacketData>((resolve, reject) => {
             if (!this.isConnected || !this.websocket) {
diff --git a/src/core/packet/proto/old/Message.ts b/src/core/packet/proto/old/Message.ts
index 02a52afe..8eb7d3b4 100644
--- a/src/core/packet/proto/old/Message.ts
+++ b/src/core/packet/proto/old/Message.ts
@@ -1,3 +1,4 @@
+// TODO: refactor with NapProto
 import { MessageType, BinaryReader, ScalarType } from '@protobuf-ts/runtime';
 
 export const BodyInner = new MessageType("BodyInner", [
@@ -45,4 +46,4 @@ export function decodeMessage(buffer: Uint8Array): any {
 export function decodeRecallGroup(buffer: Uint8Array): any {
     const reader = new BinaryReader(buffer);
     return RecallGroup.internalBinaryRead(reader, reader.len, { readUnknownField: true, readerFactory: () => new BinaryReader(buffer) });
-}
\ No newline at end of file
+}
diff --git a/src/core/packet/proto/old/ProfileLike.ts b/src/core/packet/proto/old/ProfileLike.ts
index 4cf22ad9..e79f089f 100644
--- a/src/core/packet/proto/old/ProfileLike.ts
+++ b/src/core/packet/proto/old/ProfileLike.ts
@@ -1,3 +1,4 @@
+// TODO: refactor with NapProto
 import { MessageType, BinaryReader, ScalarType, RepeatType } from '@protobuf-ts/runtime';
 
 export const LikeDetail = new MessageType("likeDetail", [
@@ -55,4 +56,4 @@ export function decodeProfileLikeTip(buffer: Uint8Array): any {
 export function decodeSysMessage(buffer: Uint8Array): any {
     const reader = new BinaryReader(buffer);
     return SysMessage.internalBinaryRead(reader, reader.len, { readUnknownField: true, readerFactory: () => new BinaryReader(buffer) });
-}
\ No newline at end of file
+}