Nestjs Provider Tutorial with Example for JavaScript Developers | Dependency Injection in Nest js

In This tutorial we will learn what is provider (services) in Nestjs. How to use provider in Nestjs project. How dependency injection work in Nestjs framework. I will also explain how to wire components in Nestjs using Inversion of control. I will explain what is injectable decorator in Nestjs and how to use it in provider classes. I will explain step by step how to create provider and inject it in another component. How to register provider in Nestjs module.
** What is Provider in Nestjs **
Providers are a fundamental concept in Nest. Many of the basic Nest classes may be treated as a provider like services, repositories, factories, helpers, and so on. The main idea of a provider is that it can be injected as a dependency; this means objects can create various relationships with each other, and the function of "wiring up" these objects can largely be delegated to the Nest runtime system.
** Dependency injection **
Nest is built around the strong design pattern commonly known as Dependency injection. In Nest it's extremely easy to manage dependencies because they are resolved just by type. Nest will resolve the Service by creating and returning an instance of Service or in the normal case of a singleton, returning the existing instance if it has already been requested elsewhere. This dependency is resolved and passed to your controller's constructor or assigned to the indicated property.
** CHAPTER **
0:00 Welcome to Tutorial
1:50 Agenda of Tutorial
2:41 Nestjs Provider Introduction
7:24 Coding - Provider Class
10:03 Explain Dependency Injection or IOC
12:16 Register Provider in Module
13:32 Running & Testing Providers
16:50 GIT Repository
#nestjstutorial #nestjs #nestjsproviders
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Check out this new video on the CodeOneDigest UA-cam channel! Learn nestjs provider with example. Learn how to create provider, what is dependency injection & IOC #providers #nestjs #ioc #dependencyinjection #nodejs #javascript #codeonedigest
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