JSPM

Simple and light-weight JavaScript type checker that brings convenience!

A fixed version of the native javascript typeof function.

Provides type detection and analysis for ANY Javascript object (including custom types) in any environment, even where native operators falter.

Create validations with ease

Traverses the AST to perform static analysis, semantic checks, and error detection.

Runtime type annotations for CoffeeScript (and JavaScript too!)

A simple runtime JSON type checker

Type checker for typescript

A JavaScript compiler and TypeScript checker written in Rust with a focus on static analysis and runtime performance

A small library for checking types

This package is designed to assist developers in type checking and validation for various JavaScript values. It provides a collection of type-checking functions, and utilities to validate your values.

CLI tool to statically type-check JavaScript via JSDoc annotations

Comprehensive validation toolkit for the Prism programming language

A lightweight typed superset for JavaScript that catches type mismatches before runtime

Just advanced version of type checker, made simple to use

Runtime Type Check for Typescript

A JavaScript library that checks whether the value is of a specific type

A super tiny library that verifies types

Modular runtime type checker with focus on creating readable and smart error messages

Data type checker

Runtime type-checking of any value in javascript

A small package for checking if a value is a certain type.

The object typeChecker checks javascript types

Ezno as a plugin

Basic type checking

A type-safe subset of ES6

JavaScript library to check data types

it will return the type of any object

A checker for types in typescript

An utility to check if a value is a number (allowing string numbers optionally).

toolbox for development

Blazing fast TypeScript type checker powered by TypeScript-Go, accessible via Bun FFI