NodeJs New Release Version 19 Features, Specs, Updates

NodeJs New Release Version 19 was released on 18 October 2022. Some of the new highlights of the NodeJs New Release Version 19 are the update of the V8 JavaScript engine to 10.7, HTTP(s) 1.1 KeepAlive by default, and Stable WebCrypto. As per reports, until April 2023, Node.js 19 will remain in the “Current” release, and Node.js 18 in the long-term support (LTS).

Node.js is an open-source server environment, which is used as a back-end JavaScript runtime environment. Node.js uses V8 JavaScript Engine to execute JavaScript code outside a web browser. Node.js helps developers with server-side scripting.

Running the scripts on the server side produces dynamic web page content. Node.js also makes development easier by unifying web application development in a single programming language, one of the best alternatives for different languages for server-side and client-side scripts.

Node.js was released on May 27 2009 by an American software engineer named Ryan Dahl. Ryan Dahl also released another JavaScript/TypeScript runtime named Deno on May 13, 2018.

The major advantage of Deno over Node.js is the support of TypeScript out of the box, and fetching resources without the need for a registry like npm.

 NodeJs New Release Version 19 Features

All new features of Node.js 19 are focused to make development much easier. Below are some of the new features introduced to Node.js 19.

 Node–watch

One of the new features of the Node.js 19 includes a command line “node –watch”. Running this command line starts Node.js in watch mode, which will immediately restart the server when the files are modified.

 Stable WebCrypto

NodeJs New Release Version 19 comes with a stable version of WebCrypto API. To access the module, global this.crypto Or require(‘node:crypto’).webcrypto should be used.

 HTTP(s) 1.1 KeepAlive by default

With the use of HTTP(s) 1.1 KeepAlive by default, there will be better throughput/performance of the Node.js server.

 Custom ESM Resolution Adjustments

For packaging the JavaScript code for reuse, Node.js uses the official Standard format called ECMAScript modules. The modules provide interoperability between the imports and their original module format.

However, in NodeJs New Release Version 19 –the experimental-specifier-resolution flag has been removed and now its functionality can be achieved with custom loaders.

 DTrace/SystemTap/ETW Support

NodeJs New Release Version 19 no longer supports DTrace/SystemTap/ETW. DTrace was used to obtain a complete overview of the active system.

The overview includes the amount of memory, CPU time, filesystem, and network resources utilized. Developers at Node.js explained that without a clear plan to support these tools, the complexity to maintain its system has not been worth it.

 Dependencies

Node.js 19 comes with updated dependencies like V8 JavaScript engine 10.7, IIhttp 8.1.0, and npm 8.19.2. Node.js 19 comes with an upgraded v8 JavaScript engine that will help to improve performance.

V8 JavaScript engine is responsible for executing JavaScript code in different environments like Linux, Windows, macOS, and much more. The new version includes a new feature to the JavaScript API: Intl.NumberFormat.

 Node.js 19 Specifications

Updates

The architecture and functions of Node.js are still developing, and there will surely be further updates on Node.js. This is the latest information about NodeJs New Release Version 19 specifications and features as of November. However, more updates about Node.js will be updated as soon as possible.

Comparison

When choosing a technology for the backend, Node.js, and Python are the ones that come in the top priority. Here we will have an in-depth comparison between Node.js and Python.

Node.js, released in 2009, is a Runtime JavaScript environment whereas Python, released in 1991, is a high-level programming language. Node.js has Non-blocking, event-driven architecture, whereas, Python is not event-driven.

The speed of Node.js is faster due to the V8 engine, event-based architecture, and single-module coaching. However, its comparator, Python is slower due to single flow.

Node.js is highly scalable by design, however, Python has no internal scalability, and requires third-party add-ons.

Node.js has a lot of available tools and frameworks. Some of those tools are Babel, log.io, Migrat, PMz, Webpack, Express, Hapi, Meteor, and much more. Likewise, Python also has a lot of available tools and frameworks like Robot, Django, Flask, Pyramid, Web2Py, and much more.

Node.js has libraries managed by Node Package Manager (NPM), whereas Python libraries are managed by Pip. Node.js is applicable for web, desktop, and mobile back-end only, whereas Python is applicable for front-end also.

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Node.js can be used for IoT solutions, real-time chats and chatbots, complex single-page applications, real-time collaboration applications, streaming platforms, and much more. On the other hand, Python can be used for data science applications, voice and face recognition, image-processing software, 3D modeling software, games, and much more.

In the case of error handling, Node.js gives high performance with multi-threading abilities. Likewise, Python error handling consists of strong troubleshooting and easier debugging. Furthermore, the communities of both Node.js and Python are great.

Node.js is open-source with a large community. Any problems during development or production can easily be looked at and solved by the developers. On the other hand, being an old programming language, Python holds a large community of experienced developers.

Node.js is used by some of the big companies like Amazon, LinkedIn, Tumblr, PayPal, Netflix, and much more. Whereas, some of the big names that use Python are NASA, Reddit, Facebook, Google Pixar, Spotify, and much more.

To conclude, both Node.js and Python are still going great and both are excellent choices for their particular use cases.