The HTTP is a protocol allowing you to fetch resources such as JSON data and HTML documents. Two sides of the connection, the client and the server, communicate by exchanging messages. The message sent by the client is a request. The message sent by the server is a response. When using Node.js, you can act like either one […]
In this article, we continue covering streams, since they have a significant role in Node.js development. This time we focus on writable streams and pipes. To illustrate how a writable stream works we implement our simple version of a stream writing to a file. We also provide examples of streams appearing in the Node.js environment in the global process object: stdin, […]
Streams are present in programming for a long time now and it looks like they are going to stay. In Node.js they also play a big role and with them, we can deal with reading/writing data in an efficient way. You can encounter streams, for example, when working with files or dealing with HTTP requests. […]
Today we dive into another essential concept connected to Node.js: buffers. To understand them, we also explain what binary data is and why do we need character encodings. All this information is crucial when diving into other parts of Node.js, such as streams. Node.js TypeScript #3: Buffers The buffer exists in Node.js to help us manipulate binary […]
In this article, we continue going through the main concepts connected to Node.js. This time we dive into the idea of the Node.js EventEmitter. We explain its synchronous nature and how it works, which helps with understanding other Node.js features because some of them use the EventEmitter under the hood. Node.js TypeScript: EventEmitter Using events is a […]
In this series, we go through the core concepts of Node.js. In general, in this series, we focus on the environment of Node.js and not the JavaScript itself, while having the advantages of static typing using TypeScript. It includes matters like the File System, Event Loop, and the Worker Threads. In this article, we create a […]
An essential part of developing a fully functional software is testing. In this article, we focus on making our application more testable and implementing unit and integration tests using Jest and a library called SuperTest. This part of the TypeScript Express testing tutorial needs some basic understanding of tests and the knowledge of tools like […]
In this article, we go through migrations, which is a significant thing when working with Postgres. We learn what they are and the basics of how to write them. Although the knowledge of SQL is useful here, we also learn how to have them auto-generated for us with the help of TypeORM CLI and how […]
Today we continue using Postgres with Express and Typescript. Relationships are an essential part of working with Postgres, and therefore we cover it today. To handle it we use TypeORM. The code for the tutorial is in the express-typescript repository in the postgres branch. Feel free to give it a star. TypeScript Express Postgres Relationships When […]
Today our tutorial takes a bit of a turn as we look into relational databases, Postgres in particular. In this article, we go through setting up an environment with Express Postgres. We also set up the pgAdmin platform so that we get an overview of our database. In the upcoming parts of the tutorial, we focus on […]