cra-template-ipt-sun-redux/template/src/app/redux/Slices/counterSlice.js

The base template for Create React App with Redux folder structure dedicated for the creator of this template.

import { createSlice } from "@reduxjs/toolkit";

const initialState = {
  count: 0,
};

export const counterSlice = createSlice({
  name: "counter",
  initialState,
  reducers: {
    increment: (state) => {
      state.count += 1;
    },
    decrement: (state) => {
      state.count -= 1;
    },
    incrementByAmount: (state, action) => {
      state.count += action.payload;
    },
    decrementByAmount: (state, action) => {
      state.count -= action.payload;
    },
  },
});

export const { increment, decrement, incrementByAmount, decrementByAmount } =
  counterSlice.actions;

export default counterSlice.reducer;