What's New in Node.js 21

• performance

  2 371 6.0 Shell

  Node.js team focusing on performance (by nodejs)

  

The Node.js performance team landed a few key improvements in this release:

• proposal-array-grouping

  19 513 0.0 HTML

  Discontinued A proposal to make grouping of array items easier

  

Array grouping to combine like data into groups using Object.groupBy() and Map.groupBy().

• SurveyJS

  surveyjs.io sponsored

  Open-Source JSON Form Builder to Create Dynamic Forms Right in Your App. With SurveyJS form UI libraries, you can build and style forms in a fully-integrated drag & drop form builder, render them in your JS app, and store form submission data in any backend, inc. PHP, ASP.NET Core, and Node.js.

  

• volta

  84 9,964 9.1 Rust

  Volta: JS Toolchains as Code. ⚡

  

Alternatively, a better way to manage Node.js releases on your machine is to use an environment management tool like Volta that can install and switch between multiple versions seamlessly.

• extended-const

  1 14 8.1 WebAssembly

  Proposal for extended constant expressions

  

WebAssembly extended-const expressions.

• readable-stream

  37 1,015 5.9 JavaScript

  Node-core streams for userland

  

Note that the older Node.js streams API hasn't been deprecated or removed. It will co-exist with the new API, and it even provides a way to convert from a web stream and vice versa using the .fromWeb() and .toWeb() methods (both added in Node 17, although both methods still retain their experimental status).

• bun

  288 70,488 10.0 Zig

  Incredibly fast JavaScript runtime, bundler, test runner, and package manager – all in one

  

Node.js v21 introduces numerous improvements in tooling, language features, standard library additions, and performance optimizations, enhancing its position as a robust JavaScript runtime and aligning it more closely with modern alternatives like Deno and Bun.

• cli

  72 7,995 9.6 JavaScript

  the package manager for JavaScript (by npm)

  

Node.js v21 includes npm v10.2.0, which notably introduces a new sbom command that allows you to generate a Software Bill of Materials (SBOM) for the current project. You can read more about the changes in recent NPM releases on GitHub.

• InfluxDB

  www.influxdata.com sponsored

  Power Real-Time Data Analytics at Scale. Get real-time insights from all types of time series data with InfluxDB. Ingest, query, and analyze billions of data points in real-time with unbounded cardinality.

  

• node

  924 103,799 9.9 JavaScript

  Node.js JavaScript runtime ✨🐢🚀✨

  

To learn more about the Node.js community and how you can contribute, check out the project's open issues and contribution guidelines on GitHub.

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