When working with Node.js, you might wonder, "What version of JavaScript does it support?" Understanding this is crucial for writing efficient code and ensuring compatibility. Node.js primarily supports ECMAScript, the standard JavaScript specification. However, the specific version of JavaScript supported varies based on the Node.js version you are using. Let's dive into the details.
Node.js releases generally align with specific versions of the V8 JavaScript engine, which is maintained by Google. The V8 engine is the JavaScript engine that powers Node.js. The compatibility between Node.js and JavaScript versions is closely tied to the version of V8 bundled with each Node.js release.
Node.js has followed the release schedule of V8 versions to maintain compatibility and ensure optimal performance. When selecting which Node.js version to use for your projects, consider the V8 version it includes to determine the supported ECMAScript features.
Node.js versions 8 and below supported up to ES6 (ECMAScript 2015) features without requiring additional flags or configurations. However, starting from Node.js version 10, support for ES modules (ECMAScript 2015 modules) was introduced. This allowed developers to use `import` and `export` statements in Node.js, similar to browser environments.
Node.js version 12 improved ES module support further by enabling it by default, making it easier to work with modern JavaScript modules seamlessly. Additionally, Node.js version 14 brought enhanced performance and stability to ES modules to facilitate better code organization and maintainability.
As of the latest Node.js versions, you can leverage the majority of ES2015+ features, including async/await, arrow functions, modules, classes, and more. Continual updates and improvements in Node.js ensure that developers can take advantage of the latest JavaScript features to write cleaner and more efficient code.
When developing applications with Node.js, it is essential to stay informed about the JavaScript features supported by your selected Node.js version. By understanding the compatibility between Node.js and JavaScript versions, you can leverage the full power of modern JavaScript to build robust and scalable applications.
In conclusion, Node.js supports various versions of JavaScript, primarily driven by the included V8 engine version. Keeping your Node.js installation up to date ensures that you can use the latest ECMAScript features and enhance your development workflow. Stay informed, experiment with new features, and enjoy coding with Node.js!