// src/reducers/counterReducer.js const initialState = { count: 0 }; const counterReducer = (state = initialState, action) => { switch (action.type) { case 'INCREMENT': return { ...state, count: state.count + 1 }; case 'DECREMENT': return { ...state, count: state.count - 1 }; case 'RESET': return { ...state, count: 0 }; default: return state; } }; export default counterReducer;