"undefined is not a function"? — It is now!

Nano framework which defines Haskell's undefined in Swift.

Rust-like but for TypeScript/JavaScript

Create proxy types that tracks dirty properties to simulate 'undefined' values when deserializing json.

uop is a tiny package that helps strict undefined checking on objects with nested properties

Filter empty values from arrays and objects.

Access and chain object properties and methods in a safe manner.

Implementation of Maybe type in Typescript

Typescript is better face of Javascript . This repo is tutorial for beginners who want to learns Typescript from scratch every this is written in very simple way or easy to understand. For day get new things about Typescript you can Starred this repository and fork in your local system.

:x: Find keys containing undefined within an object with support for deeply nested objects

Remove undefined properties from object

Convert undefined in the object to null to solve the problem of javascript object serialization in some scenarios

Test if a value is a JavaScript primitive.

nuller is a simple library for providing default values for null or undefined object property access, created for/at the OSS workshop :lion:

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

Test if a value is undefined or null.

💊 1kb tiny convert null value from any type of value to undefined.

Filters array entries that are null or undefined.

Simple stub factories slightly mimicking undefined from Haskell

Script to check Bash scripts for empty or undefined Bash variables

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.

Checks if `value` is `null` or `undefined`.

Shows how to call linkfire API endpoints for various workflows

Jinja2 extension that never undefined

Schem - Multipurpose app

JavaScript Package for checking is variable empty,undefined or null

Common types, type guards and checkers.

Test if a value is an array-like object containing only JavaScript primitives.

Linkfire Raw Data Documentation

Test if a value is undefined.