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

Test whether an object is a promises/A+ object or constructor.

isPromise

Check if something is a promise

Test whether an object looks like a promises-a+ promise

<img src="http://craydent.com/JsonObjectEditor/img/svgs/craydent-logo.svg" width=75 height=75/>

List of all javascript types. Used and useful for checking, validation, sanitizing and testing. Like isStream, isPromise, isWeakset and etc.

Verify if something is a Promise

A thenable to streamline a possibly sync / possibly async workflow.

The friendly face of @slnknrr/type-im: the same cross-realm, forgery-aware type witnesses behind familiar names and plain booleans. isMap, isTypedArray, isPromise, isPlainObject, isAsyncFunction, isClass, isGenerator and friends decided by the strongest w

Isomorphic, functional type-checking for Javascript

Internal utility collection used across the Vest ecosystem (Vest, n4s/enforce, Context, and more). It includes small, focused helpers such as:

Utilities for JavaScript Promise and AsyncFunction

Reakit utils

Essential utils for promises

Identifies a Promise or an object with a Promise-like interface

Check if a value is a Promise

lodash-pro

工具：常用数据类型、算法

Check if a variable is a promise