What's new in Node.js 18: A comprehensive guide

Looking to hire Node.js developers ? Your search ends here. See here Browser-compatible APIs can be accessed globally Previously, experts had to rely on third-party packages (such as Axios) and the http.request API, which needed a large amount of code to call and get data. Also, the Fetch API was experimental at this point and will remain tentative until further test coverage is added. Moreover, the aspects that previously needed a browser were now removed in this version.

An example of this API is as follows: const response = await fetch('https://nodejs.org/api/documentation.json'); if (response.ok) { const data = await response.json(); console.log(data); } Using this, the following globals are made available: Request, fetch,  FormData, Headers and Response. You can disable the API by using the command --no-experimental-fetch. Test Runner Module Node professionals may now develop project tests without having to rely on third-party packages or libraries. This is one of the most important enhancements included in this edition. It allows experts to write JavaScript tests and present the results in TAP format. When a disc image is generated from a data storage tape prepared for ZX spectrum systems or C64 computers, it is referred to as TAP format. To go there, type: Import test from ‘Node:test’;

Here is an example of it: test('top level test', async (d) => { await d.test('subtest 1', () => { assert.strictEqual(1, 1); }); await d.test('subtest 2', () => { assert.strictEqual(2, 2); }); }); The test runner module is only available when using the node: prefix. Note that the node: prefix indicates the loading of a core module. If the prefix is left out, importing ‘test’ would attempt to load a userland module. Web Streams API Node.js has now unveiled the experimental implementation of the Web Stream APIs. This statement basically means that the following APIs are available globally: ReadableStream, ReadableStreamDefaultReader, ReadableStreamBYOBReader, ReadableStreamBYOBRequest, TransformStream, DecompressionStream, CompressionStream TransformStreamDefaultController, WritableStream, WritableStreamDefaultController, ByteLengthQueuingStrategy, CountQueuingStrategy, TextEncoderStream, ReadableByteStreamController, WritableStreamDefaultWriter, ReadableStreamDefaultController TextDecoderStream. The above diagram helps you understand how web stream APIs are employed in Node.js.