immer vs @ngrx/entity vs @ngneat/elf-entities
State Management and Entity Handling in Angular
immer@ngrx/entity@ngneat/elf-entitiesSimilar Packages:
State Management and Entity Handling in Angular

State management libraries in Angular help manage the application state in a predictable way, making it easier to handle complex data flows, share state across components, and maintain consistency. These libraries provide tools for managing state, handling actions, and updating the UI in response to state changes. They are especially useful in large applications where managing state becomes challenging. @ngrx/entity is a part of the NgRx ecosystem, providing a set of tools for managing collections of entities in a normalized way, making it easier to perform CRUD operations, sort, filter, and manage relationships between entities. @ngneat/elf-entities is a lightweight library for managing entities in Angular applications, offering a simple and intuitive API for CRUD operations, entity relationships, and state management, while being highly customizable and performant. immer is a JavaScript library that allows you to work with immutable state in a more convenient way by using a mutable-like syntax. It creates a draft of the state that you can modify directly, and then it produces a new immutable state based on those changes, making it easier to write and understand state updates, especially in complex applications.

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immer18,659,63428,727658 kB4522 days agoMIT
@ngrx/entity399,4058,267284 kB7824 days agoMIT
@ngneat/elf-entities32,5311,66690.8 kB92 years agoMIT
Feature Comparison: immer vs @ngrx/entity vs @ngneat/elf-entities

Entity Management

  • @ngrx/entity:

    @ngrx/entity offers a comprehensive solution for managing collections of entities, including features like entity normalization, sorting, filtering, and CRUD operations. It integrates seamlessly with the NgRx store, providing a structured way to manage entity state.

  • @ngneat/elf-entities:

    @ngneat/elf-entities provides a simple API for managing entities, including CRUD operations, relationships, and custom queries. It allows for easy integration with Angular components and services, making it straightforward to manage entity state.

Integration with Angular

  • @ngrx/entity:

    @ngrx/entity is built specifically for Angular applications and integrates tightly with the NgRx store. It leverages Angular’s dependency injection and change detection mechanisms, making it a natural fit for Angular projects.

  • @ngneat/elf-entities:

    @ngneat/elf-entities is designed to work seamlessly with Angular, providing decorators and services that make it easy to integrate into Angular components and services. Its lightweight nature ensures minimal impact on application performance.

Boilerplate Code

  • @ngrx/entity:

    @ngrx/entity requires some boilerplate code to set up entities, actions, reducers, and selectors. However, it provides a structured approach that can help maintain consistency and scalability in larger applications.

  • @ngneat/elf-entities:

    @ngneat/elf-entities aims to reduce boilerplate code associated with entity management, providing a more streamlined and intuitive API for developers. It allows for quicker implementation of entity management features without excessive configuration.

Performance

  • @ngrx/entity:

    @ngrx/entity is optimized for performance, especially when dealing with large collections of entities. It uses a normalized data structure to reduce the complexity of state updates and improve the efficiency of selectors and reducers.

  • @ngneat/elf-entities:

    @ngneat/elf-entities is designed with performance in mind, minimizing the overhead of state management while providing efficient CRUD operations and entity handling. Its lightweight architecture ensures fast execution and low memory usage.

Ease of Use: Code Examples

  • @ngrx/entity:

    @ngrx/entity provides a well-defined API for managing entities, but its integration with the NgRx store may require a learning curve for developers unfamiliar with NgRx concepts. However, its comprehensive documentation and community support make it easier to learn over time.

  • @ngneat/elf-entities:

    @ngneat/elf-entities provides a simple and intuitive API for managing entities, making it easy for developers to implement CRUD operations and manage entity state with minimal effort. Its documentation and examples help facilitate quick adoption.

Example Code

  • @ngrx/entity:

    Example of @ngrx/entity for managing entities in Angular

    import { EntityState, createEntityAdapter } from '@ngrx/entity';
    import { Store, Action } from '@ngrx/store';
    import { Injectable } from '@angular/core';
    
    // Define the entity model
    interface Product {
      id: number;
      name: string;
      price: number;
    }
    
    // Create an entity adapter
    const productAdapter = createEntityAdapter<Product>();
    
    // Define the entity state
    interface ProductState extends EntityState<Product> {}
    
    // Create the initial state
    const initialState: ProductState = productAdapter.getInitialState();
    
    // Define actions
    const addProduct = (product: Product) => ({ type: 'ADD_PRODUCT', product });
    
    // Create a reducer
    function productReducer(state = initialState, action: Action) {
      switch (action.type) {
        case 'ADD_PRODUCT':
          return productAdapter.addOne(action.product, state);
        default:
          return state;
      }
    }
    
    @Injectable({ providedIn: 'root' })
    class ProductService {
      constructor(private store: Store<ProductState>) {}
    
      addProduct(product: Product) {
        this.store.dispatch(addProduct(product));
      }
    }
    
  • @ngneat/elf-entities:

    Example of @ngneat/elf-entities for managing entities in Angular

    import { createEntityStore, withEntities } from '@ngneat/elf-entities';
    import { Injectable } from '@angular/core';
    import { Store } from '@ngneat/elf';
    
    // Define the entity model
    interface Product {
      id: number;
      name: string;
      price: number;
    }
    
    // Create an entity store
    const productStore = createEntityStore<Product>('products', withEntities());
    
    @Injectable({ providedIn: 'root' })
    class ProductService {
      constructor(private store: Store) {}
    
      // Add a product
      addProduct(product: Product) {
        this.store.add(product);
      }
    
      // Get all products
      getProducts() {
        return this.store.entities$;
      }
    }
    
How to Choose: immer vs @ngrx/entity vs @ngneat/elf-entities
  • immer:

    Choose immer if you want to simplify state management in any JavaScript or TypeScript application by using a mutable-like syntax while maintaining immutability. It is particularly useful in projects where you need to manage complex state updates without the overhead of traditional immutable patterns.

  • @ngrx/entity:

    Choose @ngrx/entity if you are already using the NgRx ecosystem and need a robust solution for managing collections of entities with built-in support for normalization, sorting, and CRUD operations. It is suitable for large applications that require a structured approach to state management.

  • @ngneat/elf-entities:

    Choose @ngneat/elf-entities if you need a lightweight and flexible solution for managing entities with a focus on simplicity and performance. It is ideal for projects where you want to minimize boilerplate code and have more control over the state management process.

README for immer

Immer

npm Build Status Coverage Status code style: prettier OpenCollective OpenCollective Gitpod Ready-to-Code

Create the next immutable state tree by simply modifying the current tree

Winner of the "Breakthrough of the year" React open source award and "Most impactful contribution" JavaScript open source award in 2019

Contribute using one-click online setup

You can use Gitpod (a free online VS Code like IDE) for contributing online. With a single click it will launch a workspace and automatically:

  • clone the immer repo.
  • install the dependencies.
  • run yarn run start.

so that you can start coding straight away.

Open in Gitpod

Documentation

The documentation of this package is hosted at https://immerjs.github.io/immer/

Support

Did Immer make a difference to your project? Join the open collective at https://opencollective.com/immer!

Release notes

https://github.com/immerjs/immer/releases