Write Thunks by hand in React Redux, which contain sync or async logic

export const incrementIfOdd =
  (amount: number): AppThunk =>
  (dispatch, getState) => {
    const currentValue = selectCount(getState());
    if (currentValue % 2 === 1) {
      dispatch(incrementByAmount(amount));
    }
  };

References
https://redux.js.org/usage/writing-logic-thunks
https://redux.js.org/tutorials/fundamentals/part-6-async-logic#using-the-redux-thunk-middleware