Typeof Packages

A tiny error-throwing module for checking types.

A class that holds a set of predicate methods that detects the native type of the input.

Data type String

Data type Number

Data type Object

Data type Array

Minimalist JS data type checking utility.

JSon type data

Better type checking for JavaScript.

Detect the type of a variable.

Test if your value is a ES6:Generator or ES6:GeneratorFunction

a small and robust typeof implementation

checks if foo is not defined, i.e. undefined, null, an empty string, array, object or NaN

Thorough javascript type checker

is-any-type simple functionality alternative to check data type references such as typeof and instanceof

Function argument validation for humans

Tiny type checker with vectorization

ECMAScript 2015 compliant typeof extension

Accurately determine native type of values

Type creation, validation, and comparison for Javascript