Check if a value is a function
In Node.js, just use typeof fn which works exactly the same. This module can be useful in the browser where typeof fn has a myriad of bugs.
$ npm install is-fn
const isFn = require('is-fn');
isFn(() => {});
//=> true
isFn('unicorn');
//=> false
MIT © Sindre Sorhus
FAQs
Check if a value is a function
We found that is-fn 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
Node.js will be enforcing stricter semver-major PR policies a month before major releases to enhance stability and ensure reliable release candidates.
Security News
Research
Socket's threat research team has detected five malicious npm packages targeting Roblox developers, deploying malware to steal credentials and personal data.
Security News
vlt introduced its new package manager and a serverless registry this week, innovating in a space where npm has stagnated.