Undefined Packages

Checks if the given array has the search item (Type: string | number | boolean | object | array | null | undefined) based on the given options.

Returns the datatype of the arg.

test-npm-package

To check if the input is null, undefined, empty string, empty array, or an empty object

This package will check for empty / null / undefined value

Eslint rule to prevent undefined declaration in favor of optional parameter (?) operator in Typescript

Return the first defined item in an array

Ignore keys which have undefined values to compare from a deep equal operation with chai expect

Ignore keys which have undefined values to compare from a deep equal operation with chai expect

Utilities and types to help with simple Boolean checks

Module to know if a object isNotEmpty, isNull, isUndefined...

Detect references to undefined CSS classes

Convert any value into a boolean value.

Returns duplicates-removed array -- has options for case-sensitivity and strict-typing.

A TypeScript Type-Guard for Filtering out undefined Values

A library to ensure that all of your values are definite

this package will delete null or empty objects from an object

Basic sort algorithm that has similar behavior to Array.prototype.sort for null and undefined, but also support symbol.

a commandIs framework for discord.js shoutout to my boi itsPrime the greatest fucking youtuber of all time