redux toolkit and reselect - react-native

Question

I want to use reselect but I do not understand it correctly yet.
If I want to filter anything then I can do this:
const selectNumCompletedTodos = createSelector(
(state) => state.todos,
(todos) => todos.filter((todo) => todo.completed).length
)
But if I fetch, how does it look then? (I use useSelector and not mapToProps)
My Code:
Login:
imports
...
const Login = ({ navigation, route }) => {
const dispatch = useDispatch();
const [email, setEmail] = useState('');
const [password, setPassword] = useState('');
const [passwordShown, setPasswordShown] = useState(true);
const handleGoBack = () => {
navigation.goBack();
};
const handleLogin = async () => {
const payload = {
email,
password
};
dispatch(request(payload));
};
return (
<View>
<TouchableOpacity onPress={handleLogin}>
<Text>click to fetch!</Text>
</TouchableOpacity>
</View>
)
authSaga.js
import { all, call, put, take, takeEvery, takeLatest } from 'redux-saga/effects';
import { request, authSuccess, authFailure } from '../slice/authSlice';
import authAPI from '../../api/auth';
import * as SecureStore from 'expo-secure-store';
function* auth({ payload }) {
const data = yield call(authAPI, payload);
yield put(authSuccess(data.user));
}
function* watcher() {
yield takeEvery(request.type, auth);
}
export default function* () {
yield all([watcher()]);
}
reducers:
import { combineReducers } from "redux";
import authReducer from './slice/authSlice';
const rootReducer = combineReducers({
user: authReducer,
});
export default rootReducer;
Slice:
import { createSlice } from '#reduxjs/toolkit';
const authSlice = createSlice({
name: 'user',
initialState: {
loading: false,
data: [],
error: null
},
reducers: {
request(state) {
state.loading = true;
},
authSuccess(state, action) {
state.loading = false;
state.data = action.payload;
},
authFailure(state, action) {
state.loading = false;
state.error = action.payload;
}
}
});
export const { request, authSuccess, authFailure } = authSlice.actions;
export default authSlice.reducer;
can anyone help me ?
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