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Jinja2 extension that never undefined
Test if a value is an array-like object containing only JavaScript primitives.
Test if a value is undefined.
Common types, type guards and checkers.
Filters array entries that are null or undefined.
JavaScript Package for checking is variable empty,undefined or null
Namaste JavaScript notes provide a comprehensive guide for mastering JavaScript. Covering key concepts, syntax, and practical applications, it's an invaluable resource for developers seeking JavaScript proficiency.
A TypeScript isomorphic adaptation of Java's Optional.
Eslint rule to prevent undefined declaration in favor of optional chaining (?) operator in Typescript
Clean type handling for the Go programming language with undefinable and nullable generic types.
Flexible Data Validation Module with Built in default Types.
Guard against null or undefined values
This is an alternative to the lodash's merge function, but it does overwrite values with undefined
repositorio para o vídeo gravado para o youtube sobre variáveis javascript, var, let e const e escopo
Is a simple npm package to check if sent arguments are null or undefined.
A set of useful utility functions for JavaScript run-time type checking and inspection.
A simple library to determine whether the object is null-like or not.
Functions that check if argument is, or is not, undefined or null
get rid of exception and give default value for null or undefined properties.
Safe navigation using ES2015 Proxies
A simple utility to find out falsy values from an object or arrays.
Use hasNil to traverse chained object properties and check for null or undefined values.
Difference between null and undefined