cra-template-ts-craco-lint/template/src/store/base/reducers.ts

Template for Create React App supporting TypeScript and SASS/SCSS files. Included with Prettier and ESlint config recommended by Airbnb. Axios, Craco, scoped scss, aliasing, redux-toolkit

export default {
    increment: state => {
      // Redux Toolkit allows us to write "mutating" logic in reducers. It
      // doesn't actually mutate the state because it uses the Immer library,
      // which detects changes to a "draft state" and produces a brand new
      // immutable state based off those changes
      state.value += 1;
    },
    decrement: state => {
      state.value -= 1;
    },
    // Use the PayloadAction type to declare the contents of `action.payload`
    incrementByAmount: (state, action: PayloadAction<number>) => {
      state.value += action.payload;
    },
  },