
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.
Mark a method as deprecated. Write a message to a stream the first time the deprecated method is called.
var deprecate = require('deprecate');
Call deprecate within a function you are deprecating. It will spit out all the messages to the console the first time and only the first time the method is called.
var deprecate = require('deprecate');
var someDeprecatedFunction = function() {
deprecate('someDeprecatedFunction() is deprecated');
};
someDeprecatedFunction();
someDeprecatedFunction();
someDeprecatedFunction();
console.log('end');
//program output:
WARNING!!
someDeprecatedFunction() is deprecated
end
Set to false to not output a color. Defaults to '\x1b[31;1m' which is red.
Set to false to do nothing at all when the deprecate method is called. Useful in tests of the library you're deprecating things within.
The stream to which output is written. Defaults to process.stderr
MIT
FAQs
Mark methods as deprecated and warn the user when they're called
We found that deprecate 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.