refactor: add typescript definition

src/app/slices/message.channel.ts

@@ -1,6 +1,6 @@
-import { createSlice, PayloadAction } from '@reduxjs/toolkit';
-import { ChannelMessage } from '../../types/channel';
-import { EntityId } from '../../types/common';
+import { createSlice, PayloadAction } from "@reduxjs/toolkit";
+import { EntityId } from "../../types/common";
+import { ChatEvent } from "../../types/sse";
 
 export interface State {
   [gid: number]: number[] | undefined;
@@ -18,7 +18,7 @@ const channelMsgSlice = createSlice({
     fullfillChannelMsg(state, action: PayloadAction<State>) {
       return action.payload;
     },
-    addChannelMsg(state, action) {
+    addChannelMsg(state, action: PayloadAction<ChatEvent>) {
       const { id, mid, local_id = null } = action.payload;
       if (state[id]) {
         const midExsited = state[id]!.findIndex((id) => id == mid) > -1;