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Safe navigation using ES2015 Proxies
Formerly rhumsaa/uuid. A PHP 5.4+ library for generating RFC 4122 version 1, 3, 4, and 5 universally unique identifiers (UUID).
Statically generated webpage.
repositorio para o vídeo gravado para o youtube sobre variáveis javascript, var, let e const e escopo
Nano framework which defines Haskell's undefined in Swift.
Guard against null or undefined values
Checking how undefined string and number variables handles truthiness
This is an alternative to the lodash's merge function, but it does overwrite values with undefined
A simple library to determine whether the object is null-like or not.
A simple utility to find out falsy values from an object or arrays.
Is a simple npm package to check if sent arguments are null or undefined.
Use hasNil to traverse chained object properties and check for null or undefined values.
Difference between null and undefined
A set of useful utility functions for JavaScript run-time type checking and inspection.
Functions that check if argument is, or is not, undefined or null