What are some Common Libraries/Tools for State Normalization in Redux ?

State normalization in Redux involves organizing the state in a flat structure to simplify data access and manipulation. Several libraries and tools provide state normalization in Redux applications, streamlining state management and improving performance.

There are several common libraries/tools for state normalization in redux which are as follows:

Normalizr

Normalizr is a popular library for normalizing nested JSON structures, making data easier to work with in Redux applications.

To install, run the following command on the terminal:

npm install normalizr

Features of Normalizr:

• Declarative schema definition for data normalization.
• Handles nested and relational data structures.
• Supports denormalization for easy data retrieval.

Use Cases: Normalizing API responses, and managing relational data in Redux stores.

Syntax:

import { normalize, schema } from 'normalizr';

// Define schema
const userSchema = new schema.Entity('users');
const articleSchema = new schema.Entity('articles', {
  author: userSchema,
});

// Normalize data
const normalizedData = normalize(originalData, articleSchema);

Immutable.js

Immutable.js provides immutable data structures for JavaScript, which can be beneficial for managing normalized state in Redux.

To install, run the following command on the terminal:

npm install immutable

Features of Immutable.js:

• Immutable data structures for enforcing immutability.
• Persistent data structures for efficient memory management.
• Functional programming utilities for working with immutable data.

Use Cases: Immutable state management, ensuring data integrity in Redux stores.

Syntax:

import { Map, List } from 'immutable';

// Create immutable Map
const immutableMap = Map({ key: 'value' });

// Update immutable Map
const updatedMap = immutableMap.set('key', 'new value');

Reselect

Reselect is a library for creating memoized selectors in Redux, allowing efficient data retrieval from the Redux store.

To install, run the following command on the terminal:

npm install reselect

Features of Reselect:

• Memoized selector functions for efficient data access.
• Composable selectors for building complex data queries.
• Selector caching for improved performance.

Use Cases: Selecting and deriving data from normalized state in Redux stores.

Syntax:

import { createSelector } from 'reselect';

// Create memoized selector
const getFilteredItems = createSelector(
  state => state.items,
  items => items.filter(item => item.active)
);

Redux-ORM

Redux-ORM is a Redux add-on that provides a convenient way to manage normalized relational data in Redux stores.

To install, run the following command on the terminal:

npm install redux-orm

Features of Redux-ORM:

• Declares schema models to define the structure of normalized data.
• Handles relationships between entities.
• Provides ORM-style querying for data retrieval.

Use Cases: Managing relational data in Redux stores, simplifying state updates and queries.

Syntax:

import { ORM } from 'redux-orm';

// Define models
class User extends Model {}
class Post extends Model {}

// Initialize ORM
const orm = new ORM();
orm.register(User, Post);

Normalizr-Immutable

Normalizr-Immutable is an extension of Normalizr designed to work seamlessly with Immutable.js data structures.

To install, run the following command on the terminal:

npm install normalizr-immutable

Features of Normalizr-Immutable:

• Integrates Normalizr with Immutable.js for normalizing and denormalizing immutable data.
• Supports normalization of nested data structures.

Use Cases: Normalizing nested data structures with Immutable.js in Redux applications.

Syntax:

import { normalize, schema } from 'normalizr-immutable';

// Define schema
const userSchema = new schema.Entity('users');
const articleSchema = new schema.Entity('articles', {
  author: userSchema,
});

// Normalize data
const normalizedData = normalize(originalData, articleSchema);

Redux-Entity-Utils

Redux-Entity-Utils is a library for managing normalized state in Redux applications, providing utility functions for working with entities.

To install, run the following command on the terminal:

npm install redux-entity-utils

Features of Redux-Entity-Utils:

• Simplifies entity management with helper functions.
• Handles CRUD operations on normalized state.
• Provides selectors for accessing normalized data.

Use Cases: Simplifying entity management in Redux stores, handling normalized state updates.

Syntax:

import { createReducer, createSelectors, createActions } from 'redux-entity-utils';

// Define entity actions, reducer, and selectors
const userActions = createActions('users');
const userReducer = createReducer('users');
const userSelectors = createSelectors('users');