The complete NestJS developer. Enterprise Node.js framework

Name: The complete NestJS developer. Enterprise Node.js framework
Rating: 3.9 (829 reviews)

The complete guide for developers how to create enterprise ready applications using NestJS framework.

Created byDawid Dominiak

Last updated 4/2019

English

What you'll learn

How to use JavaScript NestJS Framework
How to create software architecture well

Course content

4 sections • 32 lectures • 3h 19m total length

The course structure1:30
There are four sections of this course: Introduction, skeleton of an application, persistence and tests. All of the sections will focus on basics of the NestJS. But it is not the end of the journey. I am going to constantly develop this course and mention all the interested topics connected with NestJS. There are many of them everywhere around. If you are interested in something, please write to me and I will take a look at your proposition.
Section preface0:23
In this section we will do a hello world application and explain the main concepts behind the NestJS framework. I would love to strongly focus on dependency injection and dependency injection container, because it is the foundation of the framework.
Prerequisites5:02
Before we start to discover nest.js power, we need to do some preparations. We need to have of course a PC with an operating system. I will work on Mac, but it’s really easy to work on another operating system also.

Additionally, you will need:
the package manager (like Brew for Mac),
Git,
NVM,
Node.js,
comfortable code editor (I recommend free Visual Studio Code),
Nest CLI.
Hello World application3:45
In this lesson, we are going to create a Hello World application in NestJS. It is easy. We will use Nest CLI to generate a new Nest.js project. In the end, we will run our application and see the sentence "Hello World!" in the browser.
Application structure - Part 19:02
We will look into the structure of the generated application and we will see what is happening under the hood. I decided to divide this lesson into two parts. In this part, I will explain the basic concepts of Nest.js like module, controller and service.
Application structure - Part 29:39
We will continue looking under the hood of NestJS. In this lecture we will focus on tests, scripts available in package.json and tslint.json file.
Explaining Dependency Injection Container6:56
Following the definition on Wikipedia dependency injection is a technique whereby one object supply the dependencies to another object. The practical implementation is quite simple and we really do not need NestJS at all.

NestJs is using much more powerful tool. NestJS is strongly using dependency injection container. Dependency Injection container makes dependency injection technique more automatic.

Dependency Injection pattern is one of the ways to implement Dependency Inversion Principle, a SOLID rule.
Section recapitulation1:18
I hope you enjoy NestJS. There were a lot of concepts and explanations here. The next sections are going to be more practical ones.

Section preface1:00
In this section we will focus on the business logic of the application. We will create our first module and a service inside. This module will also consist of a controller and both - unit and e2e tests.
Changing application metadata3:22
In this lesson we will just change the metadata of our application. It’ll be no more hello world application. It is gonna be nice location storage.
Setting up a template engine11:09
In this lesson we will focus on setting up the template engine and generate simple page.
Fixing E2E tests7:06
Changes in our application can change the behavior of our tests. Take care about it and not forget to run all the tests. We've broken the e2e test and will fix it.
Creating location module6:27
Modules are really powerful tools in the developer's hands. Thanks to them, we can reduce the scope of a big application to nicely separated modules. Each module can be maintained by a different person or even a different team so there should be loosely coupled connections between modules.

In this lesson we will focus on creating a location module.
Creating location service10:40
Every module has its own structure consisting of controllers, services and persistence layer. In this lesson, we will focus on a service.
Section recapitulation0:32
We have created a nicely separated location module being the proud, first chunk of the application. Such module consist of all business logic connected with locations.

Section preface0:41
In the last section we did a really huge refactor and we have broken most of the tests. In this section we will make them great again.
Providing a config16:34
I promised to come back with an explanation of the way to correctly handle the config of our application.
Installing PostgreSQL database3:16
Installing PostgreSQL is just a prerequisite to our journey to the persistence layer.
Setting up PostgreSQL connection16:25
In this lesson we are going to set up the connection between the application and Postgres database.
Creating a location entity7:42
In this lesson we are going to create a new entity. It is going to be a preparation for a greater refactor.
Transforming Entities to DTOs - part 116:13
I am gonna show you how to transform entities to DTO. This lecture might last long - I decided to divide this lecture into two parts.
Transforming Entities to DTOs - part 214:17
In this lesson, I am gonna transform entities to DTO. It is the second part about transforming entities to DTOs.
Section recapitulation1:55
We have done quite a huge refactor and introduced a lot of additional concepts focused on persistent layer mostly. I would love to recapitulate all the knowledge in this lesson.

Section preface0:43
In the last section we did really nice job implementing the persistence layer. Thanks that we achieved nice separation between the particular layers of the application. That was really huge refactor and we’ve broken most of the tests. In this section we will make them great again.
Fixing unit tests - part 1: install Sinon3:48
We will need some mocking library. I have chosen Sinon which I find the best.
Fixing unit tests - part 2: fix location.service.spec.ts4:54
We are going to fix location.service.ts.
Fixing unit tests - part 3: create GenericFactory4:45
Generic factory is a test helper tool that will create the mocked entities.
Fixing unit tests - part 4: add location entities to LocationService test4:40
We have created a generic factory. Let's use it to mock the entities.
Fixing unit tests - part 5: create MockHelper13:09
MockHelper is just an abstraction created to avoid code duplications in the unit tests.
Fixing unit tests - part 6: fix location.controller.spec.ts8:11
We are going to fix location.controller.spec.ts.
Fixing E2E tests2:30
It is the easiest test to fix, because it is a blackbox test. Our app behaves almost like before. There are just some cosmetically changes in the templates.
Section recapitulation1:27
We have fixed all the tests. We will create a new ones shortly.

Requirements

Mid level knowledge about JavaScript
Basic knowledge about TypeScript
Be able to use Terminal
Be familiar with Object Oriented Programming

Description

NestJS (or simply Nest) is fresh, easy to start and challenging to master node.js framework drawing on the best SOLID patterns but written to create modern applications. There are dedicated modules such as GraphQL module, WebSockets module, MicroServices module.

Nest documentation describes mature patterns and tools broadening developers horizons, like CQRS, OpenAPI, Prisma etc.

If I could say something to myself at the beginning of my career, I would advise to learn the mechanisms of mature frameworks and read Uncle Bob’s books.

I love node.js and Nest is one of the best parts of it.

This course will guide you from the beginning to the most advanced use cases. I intend to constantly update it to be up to date with your needs and all the news. Let's create the best complete NestJS course together.

Who this course is for:

Mid JavaScript/node js developers pretending to create enterprise software.
Developers with an experience in creating enterprise software curious how it looks in node js world.

The complete NestJS developer. Enterprise Node.js framework

What you'll learn

Explore related topics

Course content

Introduction8 lectures • 38min

Skeleton of a real application7 lectures • 40min

Persistance layer8 lectures • 1hr 17min

Testing9 lectures • 44min

Requirements

Description

Who this course is for: