Every node application needs a logger service. This logger service will be used to log all the information in the node. In this implementation, we will create a Nodejs app with a logger service and this will log all your information. We will be using GrayLogger in TypeScript with Nodejs framework ie. NestJS
In this article, we will implement a LoggerModule by using NestJS and TypeScript. NestJS is a NodeJs framework that is used to build NodeJs server-side applications. NestJs uses TypeScript which helps developers to implement highly scalable and maintainable applications. NestJs built on top of ExpressJs.
Let's Create a NestJS Module for Logger
Here we will create a LoggerModule, in this module we will use an npm module which is graylog2, The graylog2 is an open-source module to write the logs on your server. So let's get started.
First, let's have a look at the directory structure. We will have a directory called LoggerModule in this folder we will have our all the logger module codes and later we will see how we can use this LoggerModule in our other application.
Write the codes
Let's write the codes, I have added the description of the codes in the comments. You can read the comments for more understanding.
Let's use this LoggerModule in our Application
Conclusion:In this article, we have learned how to implement a Logger Module in our Node application.
We have implemented the graylog2 with TypeScript.
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Send logs to Graylog
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Implement Logger Module with GrayLogger
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