angular-di

Implement Angular dependency injection with inject() and tokens.

4|Updated Jun 25, 2025
One-click install
npx skills add https://github.com/neogenz/pulpe --skill angular-di-neogenz
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: angular-di
Source: https://github.com/neogenz/pulpe/tree/main/.agents/skills/angular-di
Command: npx skills add https://github.com/neogenz/pulpe --skill angular-di-neogenz

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes references (resource) components.

What problem does it solve?

Angular's traditional constructor-based DI can get verbose and hard to test; this skill enables developers to implement and manage Angular dependency injection using inject() and tokens to decouple concerns and streamline DI usage.

Core Features & Use Cases

  • Inject multiple services with inject() for concise constructors
  • Define and consume InjectionToken-based contracts for configuration and platform-specific implementations
  • Leverage provider scopes (root, component, route) and hierarchical injection for flexible architectures
  • Dynamic and token-based providers, testing with DI, and maintenance patterns demonstrated in examples

Quick Start

  • Create a simple Angular v20+ app and use inject() in a service to resolve HttpClient
  • Define an InjectionToken<string> for a config value and provide it at module level
  • Use the token in a component to configure behavior and fetch data via HttpClient

Frequently Asked Questions about angular-di

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I use Angular inject() to replace constructor-based dependency injection?▼

Angular inject() replaces constructor-based dependency injection by allowing services to resolve HttpClient and other dependencies directly within class properties. This decouples concerns and streamlines DI usage for concise, testable constructors.

When do I need InjectionToken for Angular dependency injection?▼

InjectionToken is needed for Angular dependency injection when defining platform-specific implementations or configuration values. It establishes token-based contracts to decouple configuration from concrete classes at root, component, or route scopes.

How do I configure dynamic providers across root, component, and route scopes in Angular?▼

Configuring dynamic providers across root, component, and route scopes in Angular involves using useClass, useValue, useFactory, or useExisting. This leverages hierarchical injection for flexible real-world app architectures.

Does Angular inject() work with route-level providers and hierarchical injection?▼

Angular inject() works with route-level providers and hierarchical injection. It supports dynamic providers across root, component, and route scopes, enabling flexible architectures and token-based configuration for real-world applications.

What is the best way to test Angular dependency injection using inject() and tokens?▼

The best way to test Angular dependency injection using inject() and tokens is by leveraging InjectionToken-based contracts and dynamic providers. This approach decouples concerns and streamlines maintenance patterns demonstrated in examples.

Do I need Angular v20+ to use inject() for dependency injection?▼

Yes, Angular v20+ is required to use inject() for dependency injection. You also need understanding of provider types like useClass, useValue, useFactory, and useExisting to define and consume InjectionToken-based contracts.