Gain insights into building scalable backend applications with NestJS. Explore modules, REST API, TypeORM, JWT authentication, and automated testing to advance your backend development skills.

hello-world.tar.gz

nest-first-app

nest-starter

nest-starter-build

nest-starter-start-in-prod

nest-starter-start-module-controller-service

nest-starter-start-generate-resource

database-agnostic

nest-global-module

nest-scope

books-api

books-api-database

books-api-database-configuration

books-api-database-configuration-joi

books-api-database-configuration-default-env

books-api-database-configuration-dev-env

nest-react-hashing

books-api-test-auth-service

books-api-test-end-to-end

nest-react-spa

nest-react-bcrypt

In this course, you will cover NestJS, a framework used to build efficient and reliable server-side applications. Using this framework, developers can make highly scalable backend applications that can be consumed with any type of frontend. 

You will start the course by learning the foundational blocks of NestJS, such as understanding modules, services, and controllers. Next, you will learn how to build REST API, validation and error handling. You will also learn database integration using TypeORM, app configuration using environment variables, authentication, and authorization using JWT tokens. You will complete this course by learning automated testing and application logging.

After completing this course, you will be equipped with all the necessary skills to build scalable backend applications using NestJS, and that will also advance your career in backend development.

Building a Back-End Application with NestJS

# Dependencies
In our first NestJS application, we declared several key dependencies in the `package.json` file. These include:

- `@nestjs/common`: This dependency provides various utilities and decorators used throughout NestJS, including decorators for defining controllers, providers, modules, and utility methods for handling HTTP requests and responses, among others.

- `@nestjs/core`: This dependency is the core package of the NestJS framework, providing essential functionality for bootstrapping and running a NestJS application.

- `@nestjs/platform-express`: This dependency enables NestJS applications to use Express.js as their HTTP server.

- `reflect-metadata`: This dependency enables the use of decorators in NestJS.

- `typescript`: This dependency allows usage of TypeScript, a superset of JavaScript, which adds additional features such as type annotations and interfaces.

- `@types/node`: This dependency provides TypeScript type definitions for Node.js, which is required when developing NestJS applications with TypeScript.

- `ts-node-dev`: This dependency provides a development server for TypeScript applications that automatically restarts the server when changes happen to the code.





Understand the role of each dependency in NestJS.

The Default Dependencies

Introduction

Getting Started

NestJS CLI

Building a REST API

Validation and Error Handling

Working with Databases

App Configuration

Authentication

Authorization

Testing

Logging

Wrapping Up

Build a Rest API for an Image-Sharing App With Node.js

The Default Dependencies