JSPM

Utilities to get and check variable types (isString, isPlainObject, isRegExp, etc)

Curried TypeScript type guards for primitive types and classes

TypeScript typeof utility helper with no dependencies.

A javascript library which allows to check javascript value types at runtime

Utility library for javascript type checking.

helper tools for javascript validation

ExtremeJS Utilities

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

Type detection beyond `typeof`

Useful simple functions.

The fast and reliable JS type-checking toolbox!

Simple type checker in JavaScript.

A very simple "typeof" detection

a practical custom toolkit

A fixed version of the native javascript typeof function.

A utility library for type checks and type manipulation in JavaScript and TypeScript, providing functions to determine types and verify values like null, undefined, boolean, number, and more.

Collection of methods for check

A comprehensive collection of basic utility functions and component for React ( React >= 18)

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

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

js各种类型判断工具/A type tool for javascript

Type check in TypeScript

Curried TypeScript type guards for primitive types and classes

locore is a Standard library. the library with basic JavaScript methods to improve development efficiency.

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

javascript类型判断

js各种类型判断工具/A type tool for javascript

A very simple "typeof" detection

Simple type checker in JavaScript.

JS常用工具封装

Javascript data type check true or false.

Check if the given value is of a specific type.

Curried TypeScript type guards for primitive types and classes

js各种类型判断工具/A type tool for javascript。 原typest归属账号neo***8迁移到本npm下。

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

Helpful and useful javascript functions

Curried TypeScript type guards for primitive types and classes

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

A lightweight utility library for common JavaScript checks, including isEmpty, isNull, isNumber, isEmptyString, isArray, and isNaN. Useful for validation and data handling.

has-empty-value is a package used to check the value is empty.

Check if the parameter is null

JSON isNull method

A utility function to fix and extend the built-in ''typeof'' operator of JavaScript.

A base class implementing basic value validators. E.g: isDefined, isNumber, etc... More validators to be added soon (isEmpty, isNull, isGreaterThan, isLessThan, isBoolean, isArray, etc...)

JavaScript library to check data types

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