What's new in Node.js V20?

Node.js v20 marks a significant step forward in JavaScript runtime development, with a focus on enhanced efficiency and new features. This version sees the stabilization of the test runner module, a tool for streamlined JavaScript testing, which reflects a commitment to developer productivity. The update of the V8 JavaScript engine to version 11.3 introduces an array of new language features, such as String.prototype.isWellFormed, enhancements in Array and TypedArray methods, resizable ArrayBuffer, and the introduction of RegExp v flag with set notation and properties of strings. These features aim to optimize performance and extend the programming capabilities within Node.js. Additionally, Node.js v20 introduces a stable Fetch API for more flexible HTTP requests and an experimental WebSocket API, indicating a focus on modern, real-time web application development. Together, these updates underscore Node.js's continuous evolution and its pivotal role in contemporary web application design and development​​.