initial extra reducers possibility

src/defaults.js

@@ -11,6 +11,9 @@ export const options = {
   // A list of the standard Redux middleware
   middlewares: [],
 
+  // A list of additional reducers
+  reducers: {},
+
   // An overwrite of the existing effect handler
   addEffect: addEffect(effects),
 
@@ -23,6 +26,7 @@ export default function defaults(opts = {}) {
   const {
     historyMode,
     middlewares,
+    reducers,
     addEffect,
   } = opts
 
@@ -34,6 +38,10 @@ export default function defaults(opts = {}) {
     throw new Error(`middlewares "${middlewares}" is invalid, must be an Array!`)
   }
 
+  if (reducers && !Array.isArray(reducers) && (typeof obj === 'object')) {
+    throw new Error(`middlewares "${reducers}" is invalid, must be an Array!`)
+  }
+
   if (addEffect) {
     if (typeof addEffect !== 'function' || typeof addEffect({}) !== 'function') {
       throw new Error(`addEffect "${addEffect}" is invalid, must be a function that returns a function`)

src/render.js

@@ -11,12 +11,12 @@ let Root
 
 export default function render(component, container, callback) {
 
-  const {initialState, middlewares} = options
+  const {initialState, middlewares, reducers} = options
 
   if (started) {
 
     // If app has rendered, do `store.replaceReducer` to update store.
-    replaceReducer(store, models)
+    replaceReducer(store, models, reducers)
 
     // Call `render` without arguments means *re-render*. Since store has updated,
     // `component` will automatically be updated, so no need to `ReactDOM.render` again.
@@ -25,7 +25,7 @@ export default function render(component, container, callback) {
     }
 
   } else {
-    createStore(models, initialState, middlewares)
+    createStore(models, reducers, initialState, middlewares)
   }
 
   // Use named function get a proper displayName

src/store.js

@@ -40,20 +40,21 @@ export function createStore(models, initialState, middlewares = []) {
   return store
 }
 
-export function replaceReducer(store, models) {
-  const reducer = createReducer(models)
+export function replaceReducer(store, models, reducers) {
+  const reducer = createReducer(models, reducers)
   store.replaceReducer(reducer)
 }
 
-function createReducer(models) {
+function createReducer(models, reducers) {
 
-  const reducers = models.reduce((acc, cur) => {
+  const modelReducers = models.reduce((acc, cur) => {
     acc[cur.name] = cur.reducer
     return acc
   }, {})
 
   return combineReducers({
     ...reducers,
+    ...modelReducers,
     routing: routerReducer
   })