ow - Function argument validation for humans

•    TypeScript

---

Test if value matches the provided predicate. Create a reusable validator.

validation type-checking nodejs npm-package type types check checking guard guards assert assertion predicate predicates is validate utility util typeof instanceof object

is - Type check values: `is.string('🦄') //=> true`

•    TypeScript

---

Returns the type of value.Primitives are lowercase and object types are camelcase.

type types is check checking validate validation utility util typeof instanceof object assert assertion test kind primitive verify compare

jquery.isNativeFunction

•    JQuery

---

A jQuery plugin that adds a static `isNativeFunction` method to determine if an object is actually a browser's native host object function.

jquery-plugin isnativefunction isfunction type typeof

selectn

•    Javascript

---

Curried property accessor function that resolves deeply-nested object properties via dot/bracket-notation string path while mitigating TypeErrors via friendly and composable API. You may also install selectn via Bower or jspm.

accessor property-accessors guard curry typeof nested-objects nested-properties keypath deeply-nested mitigate-typeerror typeerror typeerrors access bracket-notation-string-path browser callback composable compatible curried deep dot-notation-string-path dot/bracket-notation dot/bracket-notation-string-path dref es3 es3-compatible functional functor higher-order nested object parameter-order path-lookup pathval pointfree predicate property property-access property-accessor reach string-path to-function

jest-tobetype - A jest matcher that allows you to test the expected type of a value

•    Javascript

---

A Jest matcher that allows you to test the expected type of a value. It's not hard to write this boilerplate, but it is annoying. Strangely Jest specifically doesn't include any easy shorthand for this.

jest typeof type matcher expects tdd testing test bdd

type-detect - Improved typeof detection for node.js and the browser.

•    Javascript

---

Improved typeof detection for node and the browser. Type Detect is a module which you can use to detect the type of a given object. It returns a string representation of the object's type, either using typeof or @@toStringTag. It also normalizes some object names for consistency among browsers.

type typeof types

class - Class system for nodejs (ES5 required, could work on new browsers)

•    Javascript

---

This is a classical object oriented but with the particular philosophy of Javascript. That means the usage of prototypes and defineProperty. Everything is best explained with a good test.

abstract class classical classes instanceof typeof extends implements events object-oriented oop inheritance inherit class-inheritance prototype extend implement interfaces interface mixin

type - Type assertions aka less-broken `typeof`

•    Javascript

---

Cross-browser type assertions (less broken typeof)

typeof type utility

is-number - JavaScript/Node

•    Javascript

---

Returns true if the value is a finite number. Please consider following this project's author, Jon Schlinkert, and consider starring the project to show your ❤️ and support.

number is isnan nodejs integer nan numeric jonschlinkert float real negative zero cast check coerce coercion finite is-nan is-num is-number isnumber isfinite istype kind math num parsefloat parseint test type typeof value

is-plain-object - Return `true` if the given `value` is an object created by the `Object` constructor

•    HTML

---

Returns true if an object was created by the Object constructor. Use isobject if you only want to check if the value is an object and not an array or null.

is-object is object plain-objects is-obj is-plain-obj plain-object isobject check kind kind-of plain type typeof value

is-primitive - Is the typeof value a javascript primitive?

•    Javascript

---

Returns true if the value is a primitive. Please consider following this project's author, Jon Schlinkert, and consider starring the project to show your ❤️ and support.

primitive-values string number primitive is check node nodejs boolean symbol type typeof util

isobject - Is the value an object, and not an array or null?

•    Javascript

---

Returns true if the value is an object and not an array or null. Use is-plain-object if you want only objects that are created by the Object constructor.

isobject is-object object type typeof type-of is kind kind-of is-obj jonschlinkert nodejs check kindof native value

kind-of - Get the native JavaScript type of a value, fast.

•    Javascript

---

Get the native type of a value. Please consider following this project's author, Jon Schlinkert, and consider starring the project to show your ❤️ and support.

type typeof kind string array object primitive date regex iterator arguments set map boolean check function is is-type is-type-of kind-of number of regexp test type-of types

typpy - :v: A better typeof for JavaScript.

•    Javascript

---

A better typeof for JavaScript. Please post questions on Stack Overflow. You can open issues with questions, as long you add a link to your Stack Overflow question.

typeof typpy

typy - Minimal JavaScript type checking library

•    Javascript

---

Type checking library for JavaScript with a 'sweeter' syntax. There are a hundred other type checking libraries out there. But Typy is built with three core behavioral aspects.

npm-package js type-check object javascript-library type types is check checking validate validation utility util typeof instanceof assert assertion test kind primitive verify compare

get-object-class - A more explicit improvement on typeof

•    Javascript

---

A more explicit improvement on typeof

typeof type-of object class get-object-class

to-type - The way typeof should be

•    Javascript

---

A JavaScript implementation of angus-c's Fixing the JavaScript typeof operator. to-type fixes these vague outputs by returning the types you expect to see.

types typeof lean minimal documented tested licensed ava dawson

ngx-ow - Angular form validation on steroids

•    TypeScript

---

Use Ow to easily validate your Angular forms. If someone enters an invalid email address, the errors object for the email control will look like this.

angular ng ngx form validation type types check checking guard guards assert assertion predicate predicates is validate utility util typeof instanceof object

is-type-of - complete type checking for node

•    Javascript

---

complete type checking for node

typeof checker type is