The lodash method `_.isString` exported as a module.

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

- dateUtils - isNil - isString

Reliable cross-browser isString

Tree-shakable type & shape predicates: isString, isEmpty, isUrl, isJson, isEmail, isPromise, isMobile, … framework-agnostic and dependency-free.

TypeScript definitions for lodash.isstring

Test if a value is a string.

Simple string test

This library provides next util: isBoolean, isFunction, isNumber, isNumbers, isObject and isString, function can be object, number can not be NaN.

Is this value a JS String object or primitive? This module works cross-realm/iframe, and despite ES6 @@toStringTag.

This is a utility library to enhance the Object and Array, it also provide some basic functions such as: isString, isArray, isEmpty etc.

The [strman](https://github.com/dleitee/strman) method `isstring` exported as a [Node.js](https://nodejs.org/) module.

Validates if a value is a string primitive.

JSON isString method

JS type check (TypeScript supported) functions like `isPlainObject() isArray()` etc. A simple & small integration.

A tiny javascript type testing tool

Determine type of a variable

Tiny, type-safe predicates — isString/isNumber/isPlainObject/isEmpty and more, all narrowing TypeScript type guards. Zero dependencies.

Simple runtime TypeScript validator library

Define how you want data to be structured: ```javascript const myRules = { firstname: new Refute.TypeCheck('Please enter a firstname').isString(), lastname: new Refute.TypeCheck('Please enter a lastname').isString(), contactDetails: {