"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.

Filter empty values from arrays and objects.

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

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.

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

Remove undefined properties from object

Filters array entries that are null or undefined.

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

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

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

Script to check Bash scripts for empty or undefined Bash variables

Test if a value is 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.

Test if a value is a JavaScript primitive.

Simple stub factories slightly mimicking undefined from Haskell