We'll also describe how you can build pipelines gluing different streams together to build performant applications for complex use cases.īefore we dive into building applications, it's important to understand the features provided by the Node.js stream module. In this article, we will explain how you can use the stream module with some simple examples. Node.js includes a built-in module called stream which lets us work with streaming data. Once a small amount buffers, it starts to play, and the rest keeps on downloading as you watch. You don't have to wait until the full video downloads. For example, think of when you watch a video on YouTube. If you learn to work with these streams of bits, you'll be able to build performant and valuable applications. Create an index.js file and add this starter code.The moment you type something on a keyboard, read a file from a disk or download a file over the internet, a stream of information (bits) flows through different devices and applications. We won’t go through the process of creating an app for our plugins system. I’ll be using NPM in this tutorial, but I’ll add the Yarn commands too. Let’s start by creating a fresh Node.js project.

In this tutorial, we’ll be building a request counting plugin, and the system to load and unload that plugin. In certain circumstances, they can also be used to patch bugs and flaws that the main software provider has not yet addressed. They leverage existing APIs, and build new functionality upon them. Web extensions are a good example of this.

What Is A Pluginīut before we start, what is a plugin? A plugin is an extra piece of code that expands what a program can normally do. I’ve already created a very basic web server. In this tutorial, we will extend a minimal web server with a plugin system, create a plugin, and use that plugin with the server. They allow each instance to be customised with additional code that anyone can create.

If you’re building a minimalist product, but want to add an extra level of customisation or expansion, then plugins are a great way to enable that.

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