Is Packages

Check if the process is running with elevated privileges

Check if an object is an array or a typed array

Validate Domain Names as outlined by RFC 2181

Validates if a value is a JavaScript object.

Determine if a variable or expression is a React element or component

A tiny type checker

i18n for ISO 639 language codes

Check if the machine is running Windows or not.

Check if a Buffer/Uint8Array is EOT

Check if a Buffer/Uint8Array is WOFF

Validates if a value is a boolean primitive.

Check if a buffer/Uint8Array is a woff2 file

Validates if a value is a nonnegative integer array.

Checks if the given value is an array or array-like object.

Detect if a Node.js process is in the debug mode.

Validates if a value is NaN.

Check if a given string is css compatible color value

Validates if a value is a NaN primitive.

Validates if an array contains an input value.

semver-extra contains useful methods that aren't included in the vanilla semver package.