Set a functions arity (the argument count) by proxying function calls.
P.S. If you need need to enforce arity and don't care about argument length or this, use nary. It's magnitudes faster than using .apply to proxy arguments.
It's unlikely you'll need to use this utility in everyday development. The reason I wrote it was for functional utilities and backward compatibility with user expectations. For example, many modules use function arity to decide how the function behaves (e.g. error middleware in express, callbacks in mocha).
npm install util-arity --save
var fn = function () {};
var arity = require('util-arity');
var oneArg = arity(1, fn);
var twoArgs = arity(2, fn);
var threeArgs = arity(3, fn);
oneArgs.length; //=> 1
twoArgs.length; //=> 2
threeArgs.length; //=> 3
The typings for this project are available for node module resolution with TypeScript.
MIT
FAQs
Set the length of a function.
We found that util-arity 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.
Security News
PyPI confirms no security flaws were exploited in the Ultralytics supply chain attack and highlights improvements for safer package publishing.
Security News
Research
The Socket Research Team breaks down a malicious wrapper package that uses obfuscation to harvest credentials and exfiltrate sensitive data.
Research
Security News
Attackers used a malicious npm package typosquatting a popular ESLint plugin to steal sensitive data, execute commands, and exploit developer systems.