angular-di

Resolve Angular dependency wiring with inject() and injection tokens.

1|Updated Mar 20, 2026
One-click install
npx skills add https://github.com/afonsoft/VideoChat --skill angular-di-afonsoft
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: angular-di
Source: https://github.com/afonsoft/VideoChat/tree/main/.agents/skills/angular-di
Command: npx skills add https://github.com/afonsoft/VideoChat --skill angular-di-afonsoft

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes references (resource) components.

What problem does it solve?

Angular's dependency injection can be verbose and hard to manage across large apps. This guide shows how to use inject(), tokens, and provider scopes to create clean, testable, and scalable service architectures.

Core Features & Use Cases

  • Inject-based DI: Use inject() to retrieve dependencies inside classes, enabling more flexible composition and easier testing.
  • Provider Scopes & Tokens: Configure root, component, and route-scoped providers with injection tokens for dynamic configurations.
  • Hierarchical & Dynamic DI: Leverage hierarchical injectors and dynamic providers to adapt to platform differences and runtime flags.
  • Testing Patterns: Mock, override, and swap providers during unit tests to isolate behavior.

Quick Start

Start by enabling inject() in your Angular components and define tokens for configuration, then inject dependencies via inject() to compose services.

Frequently Asked Questions about angular-di

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

FAQPage Schema
How do I use inject() for Angular dependency injection in my components?

Use the inject() function in Angular dependency injection to retrieve dependencies directly inside classes, enabling flexible service composition and easier unit testing without constructor parameter boilerplate.

What is the best way to configure provider scopes using injection tokens in Angular?

Configure provider scopes in Angular by defining injection tokens and registering them at root, component, or route levels, allowing dynamic configurations and clean token-based provider management across your application.

How does hierarchical injection work with dynamic providers in Angular?

Hierarchical injection in Angular leverages the injector tree with dynamic providers to adapt service instances to platform differences and runtime flags, ensuring context-specific dependency resolution across component architectures.

How do I mock and override providers for Angular dependency injection during unit tests?

Mock and override providers in Angular dependency injection during unit tests by swapping injection tokens and provider configurations, isolating component behavior and ensuring testable service architectures without external dependencies.

Does this Angular dependency injection approach support multi-provider patterns?

Yes, this Angular dependency injection approach supports multi-provider patterns using injection tokens, allowing multiple values to be injected for a single token and enabling extensible plugin-like configuration architectures.

Why should I use inject() instead of constructor parameters for Angular services?

Use inject() instead of constructor parameters for Angular services to simplify composition, avoid breaking changes when reordering constructor arguments, and streamline mocking during integration and unit tests.