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Filters array entries that are null or undefined.
JavaScript Package for checking is variable empty,undefined or null
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.
An exception class to throw undefined error.
Checking how undefined string and number variables handles truthiness
A simple utility to find out falsy values from an object or arrays.
An exception to throw when a Pigalle plugin is undefined.
Use hasNil to traverse chained object properties and check for null or undefined values.
Difference between null and undefined
Functions that check if argument is, or is not, undefined or null