Type-checking Packages

Function triggers error if argument is not type 'string'

If you don't have an Error, errorist gives you one

Abstract base and covenanted classes in JavaScript.

Type-checking library for Javascript

An handy library for type validation in Javascript

Basic type checking

Declarative type-safe data decoding, encoding and run-time assertions for JS

JS helper pack

Declarative static and runtime type checking with Flow

A runtime type-checking library for javascript

Set-theory based runtime type system

Super extensible utility library for javascript apps.

Essential type checking kit for basekits.

a tiny type checking library

Concise and expressive runtime type checking.

A little library for asserting types and values.

A simple library to change control flow into an easy to understand sentence.

Function triggers error if argument is neither a primitive type or array

Helps you deny the existence of specified truthy values (e.g. 'someString', aParticularObject)

Minimalist type-checking, behavior-checking, and validation utility