
Research
2025 Report: Destructive Malware in Open Source Packages
Destructive malware is rising across open source registries, using delays and kill switches to wipe code, break builds, and disrupt CI/CD.
array-flatten
Advanced tools
Flatten nested arrays.
npm install array-flatten --save
import { flatten } from "array-flatten";
flatten([1, [2, [3, [4, [5], 6], 7], 8], 9]);
//=> [1, 2, 3, 4, 5, 6, 7, 8, 9]
(function() {
flatten(arguments); //=> [1, 2, 3]
})(1, [2, 3]);
MIT
Lodash provides a method called flatten that can flatten arrays up to one level deep. It is part of the larger lodash utility library, which offers a wide range of functions for manipulating and working with data. Unlike array-flatten, lodash.flatten does not handle deep flattening by default, but lodash.flattenDeep can be used for deeper flattening.
The 'flat' package offers similar functionality to array-flatten, with additional options to specify the depth of flattening. It can also remove empty slots in arrays with the 'cleanup' option. This package provides more configurability compared to array-flatten.
FAQs
Flatten nested arrays
The npm package array-flatten receives a total of 18,664,394 weekly downloads. As such, array-flatten popularity was classified as popular.
We found that array-flatten demonstrated a not healthy version release cadence and project activity because the last version was released a year ago. It has 1 open source maintainer collaborating on the project.
Did you know?

Socket for GitHub automatically highlights issues in each pull request and monitors the health of all your open source dependencies. Discover the contents of your packages and block harmful activity before you install or update your dependencies.

Research
Destructive malware is rising across open source registries, using delays and kill switches to wipe code, break builds, and disrupt CI/CD.

Security News
Socket CTO Ahmad Nassri shares practical AI coding techniques, tools, and team workflows, plus what still feels noisy and why shipping remains human-led.

Research
/Security News
A five-month operation turned 27 npm packages into durable hosting for browser-run lures that mimic document-sharing portals and Microsoft sign-in, targeting 25 organizations across manufacturing, industrial automation, plastics, and healthcare for credential theft.