Duration 4-5 Days – 32-40 hrs.
Overview
The TypeScript & LoopBack 4 API Development Training Course is designed to equip participants with the technical skills required to build scalable, enterprise-grade REST APIs using TypeScript and the LoopBack 4 framework.
LoopBack 4 is a highly extensible Node.js framework built with TypeScript, emphasizing strong typing, dependency injection, repository patterns, and modular architecture. This course covers TypeScript fundamentals, API development, database integration, authentication, validation, testing, and deployment best practices.
By the end of this program, participants will be capable of designing, developing, securing, and deploying production-ready backend APIs using LoopBack 4.
Objectives
- Understand TypeScript fundamentals for backend development
- Build RESTful APIs using LoopBack 4
- Implement Dependency Injection and Repository patterns
- Integrate relational or NoSQL databases
- Implement authentication and role-based authorization
- Apply validation and centralized error handling
- Structure scalable enterprise backend applications
- Test and document APIs using OpenAPI standards
- Prepare and deploy LoopBack applications
Target Audience
- JavaScript Developers transitioning to TypeScript
- js Developers
- Backend Developers
- Full-Stack Developers
- Software Engineers building API-driven systems
- IT Professionals developing enterprise backend applications
Prerequisites
- Basic to intermediate knowledge of JavaScript (ES6+)
- Familiarity with Node.js
- Understanding of RESTful API concepts
- Basic knowledge of SQL or NoSQL databases
- Experience with NPM and command-line tools (recommended)
Course Outline
Day 1 – TypeScript & LoopBack 4 Fundamentals
Module 1: TypeScript Essentials
- TypeScript Overview
- Static Typing & Type Annotations
- Interfaces and Type Aliases
- Classes and OOP in TypeScript
- Generics
- Modules & Namespaces
- Compilation & tsconfig.json
Module 2: Introduction to LoopBack 4
- LoopBack Architecture Overview
- CLI Setup and Project Creation
- Application Structure
- Controllers & Routing
- Request & Response Handling
- Hands-on Lab: Create a basic LoopBack 4 REST API
Day 2 – Models, Repositories & Database Integration
Module 3: Models & Data Modeling
- Defining Models
- Properties & Data Types
- Validation Rules
- Relations Between Models
Module 4: Repository Pattern & Data Sources
- Repository Overview
- CRUD Repositories
- DataSource Configuration
- Connecting to Databases (MySQL, PostgreSQL, MongoDB)
- Performing CRUD Operations
- Hands-on Lab: Build a CRUD API connected to a database
Day 3 – Dependency Injection & Security
Module 5: Dependency Injection & Services
- IoC Container in LoopBack
- Service Binding
- Custom Providers
- Application Lifecycle
Module 6: Authentication & Authorization
- Authentication Concepts
- JWT Implementation
- Role-Based Access Control
- Securing Endpoints
- Hands-on Lab: Implement JWT authentication and secure API endpoints
Day 4 – Advanced Features & API Documentation
Module 7: Advanced API Development
- Interceptors
- Middleware
- Request Validation
- Error Handling Strategy
- Response Customization
Module 8: API Documentation & Testing
- OpenAPI (Swagger) Integration
- API Testing using Postman
- Unit Testing
- Integration Testing
- Hands-on Lab: Add validation, interceptors, and API documentation
Day 5 (Optional) – Deployment & Enterprise Practices
Module 9: Application Architecture & Best Practices
- Layered Architecture
- Environment Configuration
- Logging & Monitoring Basics
- Code Organization
Module 10: Deployment & Advanced Topics
- Preparing Application for Production
- Docker Overview
- Cloud Deployment Concepts
- Introduction to Microservices
Capstone Project:
- Develop a Mini Enterprise API including:
- Authentication & Authorization
- Database Integration
- Validation & Error Handling
- OpenAPI Documentation
- Proper Layered Architecture
