lodash.isnil

What is lodash.isnil?

The lodash.isnil package is a utility function that checks if a value is null or undefined. It is part of the Lodash library, which is a popular JavaScript utility library that provides various functions for common programming tasks.

What are lodash.isnil's main functionalities?

Check if a value is null or undefined

This feature allows you to check if a given value is either null or undefined. The function returns true if the value is null or undefined, and false otherwise.

const isNil = require('lodash.isnil');

console.log(isNil(null)); // true
console.log(isNil(undefined)); // true
console.log(isNil(0)); // false
console.log(isNil('')); // false

Other packages similar to lodash.isnil

ramda

Ramda is a functional programming library for JavaScript. It provides a similar function called R.isNil, which checks if a value is null or undefined. Ramda focuses on functional programming principles and offers a wide range of utility functions.

underscore

Underscore is another popular JavaScript utility library that provides a variety of functions for common programming tasks. It includes a function called _.isNull, which checks if a value is null, and _.isUndefined, which checks if a value is undefined. While these functions are separate, they can be used together to achieve similar functionality to lodash.isnil.

vanilla-js

Vanilla JavaScript can also be used to check if a value is null or undefined using simple conditional checks. For example, you can use value == null to check if a value is either null or undefined. This approach does not require any external libraries.

README

lodash.isnil v4.0.0

The lodash method _.isNil exported as a Node.js module.

Installation

Using npm:

$ {sudo -H} npm i -g npm
$ npm i --save lodash.isnil

In Node.js:

var isNil = require('lodash.isnil');

See the documentation or package source for more details.