A tiny invariant function

Type Guard is a lightweight PHP library that allows you to narrow down the type of an variable to a more specific type.

Lightweight, zero-dependency toolkit for building `isFoo` style type guards in TypeScript. Runtime-safe 🛡️, composable 🧩, and ergonomic ✨. npm -> https://www.npmjs.com/package/is-kit

Comply is a tiny library to help you define policies in your app

Extensible, type-safe error classes for TypeScript with automatic code derivation, message interpolation, error grouping, and JSON serialization.

Combine user-defined type guards / type predicates as unions and intersections.

Bulletproof type guards in TypeScript.

Collection of validation functions for JavaScript data

TypeScript library with additional utility types and predicators generation

Check if an string or number is compatible to an TypeScript enum structure

Runtime type checking library for TS & JS

Sample project for "String Literal Type Guard in TypeScript" blogpost

Type-safe guards for guarding the value types in TypeScript.

Type guard based on exclude

Type-guard for DerivedRecord

TypeScript type guard generator.

A TypeScript utility function & type-guard to check if a value is not null or undefined.

Type-guard for RecordContext

Just function to predicate non nullable with type guard.

TypeScript Study Notes A personal TypeScript learning journey by Arun Neupane. This repository contains hands-on examples covering TypeScript fundamentals, type narrowing, unions, literal types, classes, inheritance, and more. Concepts are explained through simple, chai-themed examples to make learning practical, memorable, and fun.