feature-redux-persist

feature-redux-persist is a feature-u integration point to redux-persist. It promotes the persistedReducerAspect (a feature-u plugin) that facilitates redux-persist integration to your features.

feature-redux-persist relies on feature-redux to provide redux integration.

You have to be aware of feature-u philosophy and know about is implementation before reading this documentation

Install

peerDependencies, you should already have these, because this is our integration point (but just in case):

yarn add feature-u
yarn add react
yarn add redux
yarn add react-redux
yarn add feature-redux

the main event:

yarn add feature-redux-persist

Usage

Register

Within your mainline, register the feature-redux reducerAspect (see **1** below) and the feature-redux-persist reducerPersistedAspect (see **2**) to feature-u's launchApp()

Note **3** : persistedReducerAspect has a required storage configuration parameter (see below)

Note **4** : ORDER MATTER, you have to declare persistedReducerAspect before reducerAspect !

src/app.js

import {launchApp}                    from 'feature-u';
import {createReducerAspect}          from 'feature-redux'; // **1**
import {createPersistedReducerAspect} from 'feature-redux-persist'; // **2**
import AsyncStorage                   from '@react-native-community/async-storage'; // for react-native
import features                       from './feature';
 
export default launchApp({
 
  const persistedReducerAspect = createPersistedReducerAspect(AsyncStorage); // **2**  **3**
  aspects: [
    persistedReducerAspect,                        // **4**
    createReducerAspect(),                         // **1**
    ... other Aspects here
  ],
 
  features,
 
  registerRootAppElm(rootAppElm) {
    ReactDOM.render(rootAppElm,
                    getElementById('myAppRoot'));
  }
});

Syntax

+ createPersistedReducerAspect(storage): Aspect

Parameters

storage

This configuration parameter is required.

You can use every storage in that list: https://github.com/rt2zz/redux-persist#storage-engines

return value

An feature-u Aspect

Promote reducers

/!\ Before reading, you might take a look to https://github.com/KevinAst/feature-redux#usage.

In the state.js, there is some classic redux reducer.

**5** : Enhance basic reducer with persistReducer decorator from redux-persist module.

**6** : Wrap to all thing with slicedReducer from feature-redux module.

Note that you still can use non-persisted reducers with this aspect, you just have to bypass **5**.

import { createFeature } from 'feature-u';
import { slicedReducer } from 'feature-redux';
import { persistReducer } from 'redux-persist';
import AsyncStorage from '@react-native-community/async-storage';
 
import fname from './feature-name';
import reducer, from './state';
 
export default createFeature({
  name: fname,
  enabled: true,
 
  reducer: slicedReducer( // **6**
    fname,
    persistReducer({ key: fname, storage: AsyncStorage }, reducer) // **5**
  ),
 
  // ... snip snip (other aspect properties here)
});