Node JS 18 What Are The New Features and Improvements

Node JS 18 What Are The New Features: So where does the new Node JS 18 take us? The latest Node JS 18 is a significant upgrade over Node Js 17 and offers functions that will improve the speed and security of your web application. Furthermore, additional methods for creating tests, including findLast() as well as findLastIndex() on arrays, are available. 

What’s New In Node JS 18?

Let’s dig deep and find what more Node JS 18 has to offer. 

1. Undici library

The Undici library, a complete and robust HTTP 1.1 client, debuted with version 18 of Node JS. The library provides a number of error objects under the errors key for assistance in debugging and improving efficiency. The library does handle pipelining HTTP 1.1 queries, but not all of the Expect request header fields. 

After a link fails, the library will automatically restart it via a pipeline. Nevertheless, the prior pipeline’s initial request will not be retried. If the pipeline fails, the app will be forced to cancel all active requests.

2. Global Fetch API

The experimental global fetch API is yet another addition to Node JS 18. By implementing this change, programmers will be able to use the same techniques without installing any additional packages. This application programming interface is intended for programmers who are constantly dependent on external resources. Use this library with your next Node.js project. You can use it via Node Command Line Interface (CLI). Node JS 18 also includes a number of additional enhancements and bug fixes.

3. findLastIndex(), and findLast() array methods

Fresh to Node JS 18 are the -index(), and findLast()  array functions. The methods here allow programmers to find the first item in an array that meets certain criteria. When given a predicate, the findLast() function retrieves the first item in the array, whereas the findLastIndex() method gives the index of the component if it is discovered and -1 for the latter. Both of these techniques are useful for speeding up the execution of private class methods as well as class fields that use arrays.

4. 10.1 V8 engine

This newer version of NodeJs is a significant upgrade over its predecessor, NodeJs 17. NodeJs 18’s standout feature is its new and improved 10.1 V8 engine. Henceforth, developers can utilize its array methods like findLast() and -index() straight from the command line. In addition, it has a unique startup snapshot function and compatibility with private class methods. To include the snapshot in your project, you just need to include a “-node-snapshot-main” in your project.

5. fetch standard compliance

Fetch is a new module import technique introduced in version 18 of Node JS. In other words, it’s a full-fledged HTTP 1.1 client. It ought to operate in the same way as the fetch extension does in a web browser. Additionally, it has added support for the Undici ESModule. Thanks to this, devs working on the server side will find this new way for fetching to be more convenient. In Laymen’s terms, it can be used to retrieve any URL, and the output will be identical to that of a browser’s request.

Fetch doesn’t really hit a home run at error management. Fetch failures are only counted if they are the result of network issues; a 404 page is not one of them. It fails to bridge the gap between transport protocol, and application protocol issues. Because of this, standard-compliant programs frequently employ fetch. It works better at retrieving queries that return a page’s real content.

Node JS 18 What Are The New Features and Improvements

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