is-undefined

is-undefined

Check if a value is undefined or not.

:cloud: Installation

$ npm i --save is-undefined

:clipboard: Example

const isUndefined = require("is-undefined");

console.log(isUndefined(undefined));
// => true

console.log(isUndefined(false));
// => false

console.log(isUndefined(null));
// => false

:memo: Documentation

isUndefined(input)

Checks if a value is undefined or not.

Params

• Anything input: The input value.

Return

• Boolean true, if the input is undefined, false otherwise.

:yum: How to contribute

Have an idea? Found a bug? See how to contribute.

:moneybag: Donations

Another way to support the development of my open-source modules is to set up a recurring donation, via Patreon. :rocket:

PayPal donations are appreciated too! Each dollar helps.

Thanks! :heart:

:dizzy: Where is this library used?

If you are using this library in one of your projects, add it in this list. :sparkles:

• cli-box—A library to generate ASCII boxes via NodeJS
• get-key-or-default (by Lewis Edward Moten III)—Get object key or default value
• obj-unflatten—Convert flatten objects in nested ones.
• octothorpe-xo (by Lewis Edward Moten III)—A game of tic-tac-toe
• powershell—Run PowerShell scripts and commands from Node.js.
• spooky-element (by Max Rusan)—A lightweight DOM element wrapper with only the essentials (css, on, off, append, prepend ...)
• spooky-router (by Max Rusan)—The scariest router ever.
• spooky-view-manager (by Max Rusan)—Manages spooky-element views
• tilda—Tiny module for building command line tools.

:scroll: License

MIT © Ionică Bizău