IS Packages

the greatest package of all time

Check if id in WordNet book is lemma.

Check if id in WordNet book is synset.

Whiroth ====================

Validate email, phone number, url and etc.

A simple keyboard utility for the browser.

Simple Angular 6+ directive that tells if an image is loaded.

Determine if a value is a symbol

Determine if a value is `undefined`

Determine if a value is not `undefined` or `null`

Determine if a value is `NaN`

Determine if a value is `null`

Determine if a value is primitive

Determine if a value is an instance of a reference type

Utility to check if a node passes a test

Predicate Library

MayBe on Return constructor and useful functions

checks the given value is a RegExp Object

Check if a string is a datetime string.

Check if a string is CSS combinator