# Technology Stack Document
Generated: Tuesday, September 16, 2025

## Frontend Technologies

* **Framework:** **Angular**. The boilerplate is built on the latest stable version of the Angular framework, chosen for its robustness, component-based architecture, and suitability for large-scale, enterprise applications.
* **Language:** **TypeScript**. As a superset of JavaScript, TypeScript is used for its strong typing, which improves code quality, maintainability, and developer productivity.
* **Styling:** **SCSS**. SCSS is used for its advanced features over standard CSS, such as variables, nesting, and mixins, allowing for more organized and maintainable stylesheets.
* **UI Framework:** **VMware Clarity Design System**. This comprehensive design system provides a set of accessible, high-quality UI components and a consistent visual language, which accelerates UI development.
* **Core Libraries:**
    * **RxJS:** Used extensively throughout Angular for reactive programming and managing asynchronous operations.
    * **Zone.js:** A signaling mechanism that enables Angular's automatic change detection.

## Backend Technologies

* **Backend Agnostic:** This is a frontend-only boilerplate and is not tied to any specific backend technology. It is designed to communicate with any backend that exposes a RESTful or GraphQL API.

## Database Technologies

* **Not Applicable:** As a frontend project, the boilerplate does not include a database.

## Infrastructure & Deployment

* **Web Server:** The built application consists of static files that can be served by any modern web server (e.g., **Nginx**, **Apache**, **Caddy**).
* **Hosting:** The project can be deployed to any static site hosting provider, such as **Firebase Hosting**, **Netlify**, **Vercel**, **AWS S3**, or **GitHub Pages**.
* **Containerization (Optional):** The application can be easily containerized using **Docker** for consistent deployment environments.

## Development & Build Tools

* **Build Tool:** **Angular CLI**. The command-line interface for Angular is used for creating, building, testing, and deploying the application.
* **Package Manager:** **npm**. The Node Package Manager is used for managing all project dependencies.
* **Version Control:** **Git**. Git is the standard for version control and source code management.
* **Testing:**
    * **Unit Testing:** **Jasmine** (framework) and **Karma** (test runner) are the default tools for unit testing in Angular.
    * **End-to-End (E2E) Testing:** The project can be configured to use **Protractor** or more modern alternatives like **Cypress** or **Playwright**.
* **Code Formatting/Linting:**
    * **ESLint:** Used for identifying and reporting on patterns in ECMAScript/JavaScript code.
    * **Prettier:** An opinionated code formatter that enforces a consistent style.
    * **EditorConfig:** Helps maintain consistent coding styles for multiple developers working on the same project across various editors and IDEs.

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## TECH STACK UPDATE - 2025-09-26 09:59:41



# Technology Stack Document
Generated: 2025-09-26T09:44:40.087454

## Frontend Technologies
-   **Framework:** Angular (v16+, building on existing boilerplate)
-   **Styling:** Clarity Design System (v15+, existing integration)
-   **State Management:** Angular Services with RxJS (for reactive data flow and component communication, simple global state)
-   **HTTP Client:** Angular's `HttpClient` module
-   **Geolocation:** Browser's built-in Geolocation API (`navigator.geolocation`)

## Backend Technologies
-   **Language:** Node.js (v18+ LTS)
-   **Framework:** Express.js (v4+, for building RESTful API endpoints)
-   **API:** RESTful API
-   **HTTP Client (for external API calls):** `axios` or `node-fetch`
-   **Environment Variables:** `dotenv` package for local development
-   **CORS Middleware:** `cors` package
-   **External Weather API:** OpenWeatherMap (or similar free-tier friendly service like WeatherAPI.com, AccuWeather API for robust features)

## Database Technologies
-   **Primary Database:** None (Backend is a stateless proxy)
-   **Caching:** Redis (v6+ for in-memory data caching of weather data)

## Infrastructure
-   **Deployment:** Docker (for containerization of both frontend and backend services)
-   **Local Orchestration:** Docker Compose (for simplified local multi-container setup)
-   **Hosting:** Cloud provider such as AWS (e.g., AWS Fargate, ECR), Azure (Azure Container Instances, Azure Kubernetes Service), or GCP (Google Cloud Run, Google Kubernetes Engine) for hosting Docker containers.

## Development Tools
-   **Version Control:** Git
-   **IDE:** Visual Studio Code (with Angular and Node.js extensions)
-   **Package Manager:** npm / yarn
-   **Frontend Testing:** Jest / Karma / Jasmine (as per Angular defaults)
-   **Backend Testing:** Mocha / Chai / Jest
-   **API Testing:** Postman / Insomnia (for testing backend proxy and external API interactions)
-   **CI/CD:** GitHub Actions / GitLab CI / Jenkins (for automated testing and deployment pipelines)



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## TECH STACK UPDATE - 2025-09-26 10:00:22


# Technology Stack Document
Generated: 2025-09-26T09:44:40.087454

## Frontend Technologies
-   **Framework:** Angular (v16+, building on existing boilerplate, FR-001, FR-002 from base boilerplate)
-   **Styling:** Clarity Design System (v15+, existing integration, FR-003 from base boilerplate, NFR-003)
-   **State Management:** Angular Services with RxJS (for reactive data flow and component communication, simple global state)
-   **HTTP Client:** Angular's `HttpClient` module (Interface Requirements: API Requirements)
-   **Geolocation:** Browser's built-in Geolocation API (`navigator.geolocation`) (FR-003)

## Backend Technologies
-   **Language:** Node.js (v18+ LTS)
-   **Framework:** Express.js (v4+, for building RESTful API endpoints, FR-008)
-   **API:** RESTful API
-   **HTTP Client (for external API calls):** `axios` or `node-fetch`
-   **Environment Variables:** `dotenv` package for local development (NFR-002, Business Rule 1)
-   **CORS Middleware:** `cors` package
-   **External Weather API:** OpenWeatherMap (or similar free-tier friendly service like WeatherAPI.com, AccuWeather API for robust features). Chosen for its widespread adoption and generous free tier (FR-008).

## Database Technologies
-   **Primary Database:** None (Backend is a stateless proxy, handles data transformation and caching)
-   **Caching:** Redis (v6+ for in-memory data caching of weather data, NFR-005, Business Rule 3)

## Infrastructure
-   **Deployment:** Docker (for containerization of both frontend and backend services, NFR-005)
-   **Local Orchestration:** Docker Compose (for simplified local multi-container setup for development and testing)
-   **Hosting:** Cloud provider such as AWS (e.g., AWS Fargate, ECR), Azure (Azure Container Instances, Azure Kubernetes Service), or GCP (Google Cloud Run, Google Kubernetes Engine) for hosting Docker containers, leveraging cloud-managed services for scalability and reliability.

## Development Tools
-   **Version Control:** Git
-   **IDE:** Visual Studio Code (with Angular and Node.js extensions)
-   **Package Manager:** npm / yarn
-   **Frontend Testing:** Jest / Karma / Jasmine (as per Angular defaults)
-   **Backend Testing:** Mocha / Chai / Jest (for API and service layer testing)
-   **API Testing:** Postman / Insomnia (for manual testing of backend proxy and external API interactions)
-   **CI/CD:** GitHub Actions / GitLab CI / Jenkins (for automated testing and deployment pipelines, NFR-003 from base boilerplate)
