angular-di

Configure Angular dependency injection with inject(), tokens, and providers.

1.1k|93|Updated Mar 5, 2025
One-click install
npx skills add https://github.com/zard-ui/zardui --skill angular-di-zard-ui
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: angular-di
Source: https://github.com/zard-ui/zardui/tree/main/.agents/skills/angular-di
Command: npx skills add https://github.com/zard-ui/zardui --skill angular-di-zard-ui

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes references (resource) components.

What problem does it solve?

Dependency injection in Angular v20+ decouples components from concrete implementations by enabling injection via inject(), tokens, and providers to manage dependencies across the app.

Core Features & Use Cases

  • Hierarchical injection across root, component, and route scopes to control service lifetimes and accessibility.
  • Injection tokens and multi-provider patterns for configurable, extensible APIs.
  • Testing, runtime configuration, and pattern utilities to compose dependencies in large-scale Angular apps.

Quick Start

Define an InjectionToken, provide it in a module or route, and inject dependencies where needed to bootstrap DI in your app.

Frequently Asked Questions about angular-di

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

FAQPage Schema
How does hierarchical dependency injection work in Angular?

Angular hierarchical injection manages service lifetimes across root, component, and route scopes to control singleton or per-instance accessibility and dynamic provider configurations.

How do I use InjectionToken to configure providers in Angular?

Define an InjectionToken, provide it in a module or route, and inject dependencies where needed to bootstrap decoupled, token-based configuration and multi-provider patterns in your app.

Can I use the inject() function for runtime configuration in Angular?

Yes, the inject() function enables runtime context utilities and lifecycle-aware configurations, allowing components to dynamically retrieve dependencies without constructor-based parameter injection.

What is the best way to test dependency injection in Angular components?

Testing with Angular DI involves configuring providers across root, component, or route scopes to supply mocks or stubs, ensuring components remain decoupled from concrete implementations during test execution.

When do I need multi-provider patterns in Angular dependency injection?

Multi-provider patterns are needed when creating extensible APIs, allowing multiple values to be associated with a single InjectionToken for dynamic plugin or handler registration within the DI system.