JSPM

declarative check type of function arguments and development profiler for your functions

The fast and reliable JS type-checking toolbox!

A fixed version of the native javascript typeof function.

Type check in TypeScript

This library provides core functionalities for determining the type of a given object, supporting various JavaScript data types.

Simple type checker in JavaScript.

This package is for confirming data that will take arguments to verify its value and type.

This library is to check for null and undefined values in JSON objects

Check if the given value is of a specific type.

A node.js module to get, compare and check types

Curried TypeScript type guards for primitive types and classes

JavaScript library to check data types

A small set of functions to check value against a specific type

Check if the parameter is undefined