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Node.js® is a free, open-source, cross-platform JavaScript runtime environment that lets developers create servers, web apps, command line tools and scripts.

An example of a web server written with Node.js which responds with 'Hello, World!': Commands in this document start with $ or > to replicate how they would appear in a user's terminal.

Node.js v22 empowers applications to seamlessly interact with WebSocket servers as clients, but the creation of WebSocket servers within Node.js remains dependent on established libraries.

There is a set of environment variables that can be defined to customize the behavior of Node.js, for more details refer to the CLI Environment Variables documentation.

Let's walk through a simple example to demonstrate how code coverage works in Node.js. Note: This example, and all other ones in this file, are written using CommonJS.

Apr 10, 2025 · In this article, we'll explore how to monitor, manage, and optimize memory usage within Node.js. We'll also cover important V8 concepts like the heap and garbage collection …

Node.js® is a free, open-source, cross-platform JavaScript runtime environment that lets developers create servers, web apps, command line tools and scripts.

The node:trace_events module provides a mechanism to centralize tracing information generated by V8, Node.js core, and userspace code. Tracing can be enabled with the --trace-event …

Node.js® is a free, open-source, cross-platform JavaScript runtime environment that lets developers create servers, web apps, command line tools and scripts.