npm package discovery and stats viewer.

Discover Tips

  • General search

    [free text search, go nuts!]

  • Package details

    pkg:[package-name]

  • User packages

    @[username]

Sponsor

Optimize Toolset

I’ve always been into building performant and accessible sites, but lately I’ve been taking it extremely seriously. So much so that I’ve been building a tool to help me optimize and monitor the sites that I build to make sure that I’m making an attempt to offer the best experience to those who visit them. If you’re into performant, accessible and SEO friendly sites, you might like it too! You can check it out at Optimize Toolset.

About

Hi, 👋, I’m Ryan Hefner  and I built this site for me, and you! The goal of this site was to provide an easy way for me to check the stats on my npm packages, both for prioritizing issues and updates, and to give me a little kick in the pants to keep up on stuff.

As I was building it, I realized that I was actually using the tool to build the tool, and figured I might as well put this out there and hopefully others will find it to be a fast and useful way to search and browse npm packages as I have.

If you’re interested in other things I’m working on, follow me on Twitter or check out the open source projects I’ve been publishing on GitHub.

I am also working on a Twitter bot for this site to tweet the most popular, newest, random packages from npm. Please follow that account now and it will start sending out packages soon–ish.

Open Software & Tools

This site wouldn’t be possible without the immense generosity and tireless efforts from the people who make contributions to the world and share their work via open source initiatives. Thank you 🙏

© 2024 – Pkg Stats / Ryan Hefner

@artkravchenko/redux-persist-transform-immutable

v5.0.2

Published

immutable.js transform for redux-persist

Downloads

92

Readme

Redux Persist Transform Immutable

Add immutable sub-reducer support to redux-persist.

NOTE this handles immutable state on a per-reducer basis. If your top level state is an immutable map, this module will not work.

Breaking Change

v5 changes from transitjs to remotedev-serialize. For existing projects that upgrade to v5, all persisted data will be lost upon the initial persist. note It is possible to write an upgrade via a custom transform that supports both formats - if you do write one please PR!

Usage with Redux Persist

import { createStore, combineReducers } from 'redux'
import { persistStore, persistReducer } from 'redux-persist'
import immutableTransform from 'redux-persist-transform-immutable'

const persistConfig = {
  transforms: [immutableTransform()],
  key: 'root',
  storage
}

const reducer = combineReducers(reducers)
const persistedReducer = persistReducer(persistConfig, reducer)
const store = createStore(persistedReducer)

persistStore(store)

Config

For config, please refer to redux-persist's docs.

Usage with Records

By default, immutable Records will be persisted and restored as Maps, because the library has no way of knowing what your Record constructor looks like. To change this behavior and allow a Record to be persisted and restored as a Record instance, you'll need to do two things:

  1. Add a name attribute to your record (this is the second argument to a Record's constructor).
  2. Pass your Record constructor to the transformer's withRecords() function to generate a transformer capable of serializing and deserializing the record.

Minimal example:

import { compose } from 'redux'
import { persistStore, autoRehydrate } from 'redux-persist'
import immutableTransform from 'redux-persist-transform-immutable'

const reducer = combineReducers(reducers)
const store = compose(autoRehydrate(), createStore)(reducer)

const MyRecord = Record({
  foo: 'null'
}, 'MyRecord') // <- Be sure to add a name field to your record

persistStore(
  store,
  {
    transforms: [immutableTransform({records: [MyRecord]})]
  }
)

Avoiding Unnecessary Serialization

By default, redux-persist-immutable-transform will serialize and deserialize all passed objects using transit-immutable-js. If you are concerned about performance, you can either whitelist or blacklist reducer that you know are not immutable.

Example state object:

state = {
  username: 'john',
  imageUri: 'images/profilePic.png',
  friends: Immutable.List([ ... ])
}

Set up the transformer to ignore the string-based reducer keys:

persistStore(store, {
  transforms: [immutableTransform({
    blacklist: ['username', 'imageUri']
  })]
})

/* OR */

persistStore(store, {
  transforms: [immutableTransform({
    whitelist: ['friends']
  })]
})