client/redux/appSlice.ts

import { createSlice, PayloadAction } from "@reduxjs/toolkit";
import type { RootState } from "./store";

// Define a type for the slice state
interface appState {
  accountId: string;
}

// Define the initial state using that type
const initialState: appState = {
  accountId: "",
};

export const appSlice = createSlice({
  name: "app",
  // `createSlice` will infer the state type from the `initialState` argument
  initialState,
  reducers: {
    setAccountId: (state, action: PayloadAction<string>) => {
      state.accountId = action.payload;
    },
  },
});

export const { setAccountId } = appSlice.actions;

// Other code such as selectors can use the imported `RootState` type
// export const selectCount = (state: RootState) => state.app.value;

export default appSlice.reducer;