store.js

import { createStore } from "redux"

const shallowcopy = (col) => {
  if (Array.isArray(col)) {
    return [...col]} 
  else {
    return {...col}}}

const assoc = (col, k, v) => {
  col = shallowcopy(col)
  col[k] = v
  return col}

const update = (col, k, f) => {
  col = shallowcopy(col)
  col[k] = f(col[k])
  return col}

const action = (type, payload) => ({type:type, payload:payload})

const initialState = {
  title: 'botnik',
  view: 'dashboard',
  loggedin: true}

const Reducer = (state = initialState, action) => {
  switch (action.type) {
    case 'ASSOC' : return assoc(state, action.payload.k, action.payload.v)
    case 'UPDATE': return update(state, action.payload.k, action.payload.f)
    default: return state}}

const store = createStore(Reducer)

const ASSOC = (k, v) => store.dispatch(action('ASSOC', {k:k, v:v}))

const UPDATE = (k, f) => store.dispatch(action('UPDATE', {k:k, f:f}))

export {store, assoc, update, ASSOC, UPDATE}