Which library provides Node.js with a JavaScript engine?

Node.js incorporates the V8 JavaScript engine. V8 is an open-source JavaScript engine developed by Google, utilized in the Google Chrome browser and Node.js environment. V8 compiles JavaScript code into optimized machine code for faster execution, rather than interpreting it, which is one reason Node.js efficiently handles high concurrency. V8's key advantages are its fast execution speed and highly optimized memory management. This enables applications running in Node.js to handle high-performance computing and extensive I/O operations, making it ideal for building web servers and real-time communication applications. By using V8, Node.js not only provides a server-side JavaScript execution environment but also leverages JavaScript's asynchronous features, such as event loops and non-blocking I/O, to enhance application performance and responsiveness. These features make Node.js particularly suitable for handling data-intensive real-time operations in web applications.