is-undefined

Check if a value is undefined or not.

☁️ Installation

$ npm i --save is-undefined

📋 Example

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

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

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

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

📝 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.

😋 How to contribute

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

💫 Where is this library used?

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

• cli-box—A library to generate ASCII boxes via NodeJS
• obj-unflatten—Convert flatten objects in nested ones.
• 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.

📜 License

MIT © Ionică Bizău