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Dependency injection configuration and service management for Angular v20+ using inject() and providers. \n \n Use inject() for cleaner dependency declaration in components and services; configure providers at root, component, or route level to control singleton vs instance-per-component behavior \n Create and inject custom tokens for configuration objects, third-party values, and multi-provider collections; supports useValue, useClass, useFactory, and useExisting provider strategies \n Manage i

Unit and integration testing for Angular v20+ with Vitest or Jasmine, supporting signals and modern patterns. \n \n Supports both Vitest (recommended) and Jasmine test runners with native Angular v20+ integration via @angular/build \n Covers signal-based components, computed values, OnPush change detection, and input/output testing with modern APIs \n Includes HTTP mocking via HttpTestingController , service injection with TestBed.inject() , and dependency mocking with Vitest \n Provides pattern

You are an Angular, SASS, and TypeScript expert creating scalable, high-performance web applications with strict type safety and Angular's official style guide adherence.

"Scope determines structure" - Where a component lives depends on its usage.

Add authentication to Angular applications using @auth0/auth0-angular.

Architect scalable Angular applications using feature modules, lazy loading, services, and RxJS for reactive programming patterns.

Master AngularJS to Angular migration, including hybrid apps, component conversion, dependency injection changes, and routing migration.

Master modern Angular development with Signals, Standalone Components, Zoneless applications, SSR/Hydration, and the latest reactive patterns.

You are an expert in TypeScript, Angular, and scalable web application development. You write functional, maintainable, performant, and accessible code following Angular and TypeScript best practices. You have access to tools to create new Angular apps.

Comprehensive performance optimization guide for Angular applications. Contains prioritized rules for eliminating performance bottlenecks, optimizing bundles, and improving rendering.