Technical Specification Document (TSD)

Consider this a draft written in pencil, open to revision rather than a final document in permanent ink.

1. Frontend Framework Selection

Guidelines

• Avoid using native boilerplates like Create React App (CRA) and Vue CLI.
• Prefer modern frameworks that streamline development and improve maintainability.
• Suggested frameworks include:
  • Next.js (React-based, SSR/SSG support, optimized for performance)
  • Nuxt.js (Vue-based, SSR/SSG support, built-in features)
  • Remix (Full-stack React framework with nested routing and performance optimizations)
  • Other Popular Frameworks (Astro, SvelteKit, SolidStart, etc.)
• Compare the frameworks based on:
  • Performance (SSR, SSG, hydration, lazy loading, etc.)
  • Developer Experience (Tooling, debugging, ecosystem support)
  • Scalability (Handling of large projects, maintainability)
  • SEO & Accessibility (Server-side rendering, metadata handling)
• Consult mentors before finalizing the framework.
• TypeScript is mandatory for front-end development to improve maintainability and type safety.

2. Backend Framework Selection

Guidelines

• Prefer using Nest.js for its modular structure and robustness.
• Express.js is an acceptable alternative but should be used with caution in larger projects.
• The backend must follow a structured, modular architecture for maintainability.
• Swagger and OpenAPI Specification v3.1.0 should be used for API documentation and frontend integration.
• TypeScript is mandatory for backend development to ensure better maintainability, strict typing, and improved developer experience.

3. Linting & Code Quality

Guidelines

• ESLint must be implemented as a mandatory linting tool for both the frontend and backend.
• Follow proper linting rules to maintain code quality and consistency.
• Recommended ESLint configurations:
  • Airbnb Style Guide
  • Prettier for code formatting integration
  • Custom project-specific rules if required
• Ensure linting runs in the CI/CD pipeline to enforce quality control.
• Husky must be integrated to enforce linting and formatting at pre-commit and pre-push stages.

4. Styling Standards

Guidelines

• CSS Preprocessors like SCSS (Sass) must be used for styling.
• Ensure modular and maintainable styling by structuring SCSS properly.
• Follow best practices for:
  • Variables and Mixins for consistency and reusability
  • BEM (Block Element Modifier) methodology for class naming
  • Component-based styles to avoid conflicts

5. Code Ideology

Guidelines

• Enforce key software design principles:
  • Atomicity: Keep components and functions small, focused, and reusable.
  • DRY (Don't Repeat Yourself): Avoid code duplication by modularizing common functionality.
  • KISS (Keep It Simple, Stupid): Maintain simplicity in logic and structure.
  • YAGNI (You Ain’t Gonna Need It): Only implement features that are necessary, avoiding premature optimizations.
• The project must follow a library-first format, meaning:
  • Any component used in the project should be built to work independently.
  • Components should be reusable across different parts of the application.
• Bonus: Integration of Storybook is encouraged for frontend component development and testing.

6. Environment Management

Guidelines

• Different environments must be created (development, staging, production).
• Environment variables must be documented properly to ensure clarity and ease of configuration.
• Validation scripts must be implemented to ensure that the project does not run without the required environment variables.
• A sample.env file must be committed to the repository to maintain a record of required environment variables.
• Environment-specific configurations should be managed efficiently, avoiding hard-coded values.
• Mentors can assist with creating validation scripts to ensure environment configurations are correct.

7. Testing Standards

Guidelines

• Testing is mandatory to ensure code reliability and maintainability.
• Adopt a Test-Driven Development (TDD) or Behavior-Driven Development (BDD) approach where feasible.
• Testing should cover:
  • Unit Tests: For individual functions and components (e.g., Jest, Mocha, Vitest).
  • Integration Tests: To ensure different modules interact correctly.
  • End-to-End (E2E) Tests: To test user flows (e.g., Cypress, Playwright).
  • API Testing: Ensure backend endpoints function correctly (e.g., Postman, Supertest).
• Ensure tests are included in the CI/CD pipeline to maintain stability.
• Aim for a minimum of 80% test coverage for critical parts of the application.

8. Future Scope

Docker Integration

• Docker should be used for containerization to ensure consistency across development, testing, and production environments.
• Implement Docker Compose for managing multi-container applications.
• Ensure the application runs smoothly in isolated containers with proper configurations for:
  • Frontend (e.g., Next.js, Nuxt.js running in a Node.js container)
  • Backend (e.g., Nest.js, Express.js running in a separate container)
  • Database (e.g., PostgreSQL, MySQL, or MongoDB running as a service)
• Use environment variables and volume mapping to manage configurations dynamically.
• Follow best practices for creating lightweight and secure Docker images.

CI/CD Automation

• Deployment should be configured with CI/CD to support automatic deployments and release processes.
• Implement GitHub Actions, GitLab CI/CD, or Jenkins for automated deployment pipelines.
• Automate testing, linting, and security scans in CI/CD workflows.
• Ensure deployments follow blue-green or canary deployment strategies to minimize downtime.

Security Best Practices

• Enforce OWASP security standards for both frontend and backend.
• Implement JWT or OAuth2 for authentication.
• Regularly conduct dependency security audits using tools like Snyk or OWASP Dependency-Check.

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Review and Approval: This document should be reviewed with the team and mentors before implementation.