fix: compatiable redux pattern

src/index.js

@@ -1,19 +1,19 @@
 import produce from "immer";
 
-export default function rxloopImmer(
-  conf = {},
-) {
-  const config = {
-    disabled: [],
-    ...conf,
-  };
+export default function rxloopImmer() {
   return function init() {
-    function createReducer(action = {}, reducer = () => {}, model = '') {
-      return config.disabled.indexOf(model) > -1 ?
-      (state) => reducer(state, action) :
-      (state) => produce(state, draft => {
-        reducer(draft, action);
-      });
+    function createReducer(action = {}, reducer = () => {}) {
+      return (state) => {
+        const rtn = produce(state, draft => {
+          const compatiableRet = reducer(draft, action);
+          if (compatiableRet !== undefined) {
+            // which means you are use redux pattern
+            // it's compatiable. https://github.com/mweststrate/immer#returning-data-from-producers
+            return compatiableRet;
+          }
+        });
+        return rtn === undefined ? {} : rtn;
+      }
     }
     this.createReducer = createReducer;
   };

test/index.spec.js

@@ -3,9 +3,7 @@ import immer from '../src/';
 
 const app = rxloop({
   plugins: [
-    immer(
-      { disabled: [ 'a' ] }
-    ),
+    immer(),
   ],
 });
 
@@ -28,20 +26,6 @@ app.model({
 });
 app.stream('test').subscribe();
 
-const aState = {
-  a: 1,
-};
-app.model({
-  name: 'a',
-  state: aState,
-  reducers: {
-    add(state) {
-      state.a = 2;
-    },
-  },
-});
-app.stream('a').subscribe();
-
 describe('Basic usage', () => {
   test('immer number', () => {
     app.dispatch({
@@ -69,12 +53,4 @@ describe('Basic usage', () => {
       arr: [1, 2],
     });
   });
-  test('config test', () => {
-    app.dispatch({
-      type: 'a/add',
-    });
-    expect(aState).toEqual({
-      a: 2,
-    });
-  });
 });