Example of Reduced Redux Code for a User State Boilerplate

user.js

import { reducer, UPDATE } from '../util/redux-util'
//state
export const userState = ({ userReducer: { ...keys } }) => (keys)
//dispatch
export const userDispatch = (dispatch) => ({
  onMount: () => dispatch(mount()),
});
//functions
export const mount = () => async (dispatch, getState) => {
  console.log('REDUX: user mount')
  const { user } = getState().userReducer
  dispatch({ type: UPDATE, user })
}
//reducer
export const userReducer = (state = {
  user: null,
}, action) => reducer(state, action)



/* Somewhere else */



//generic event type for updating state
export const UPDATE = 'UPDATE_STATE'
//generic reducer for updating state
export const reducer = (state, action) => {
  //console.log(action)
  const { type } = action
  switch (type) {
    case UPDATE:
      const a = { ...action }
      delete a.type
      return { ...state, ...a }
    default:
      return state
  }
}