InstanceOf Packages

A simple package which returns true when object is type of some specific interface or type.

Tests to see if the prototype property of a constructor appears anywhere in the prototype chain of an value.

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

WIP: Checking and comparing with the prototype

Checking and comparing with the prototype

Determine if a value is an instance of a type

Create typed overloads for functions

A 'real' Enum implementation for JavaScript with typesafety, ordinal support and comparison support. inspired by Java. Typed with Flow and supports ES-modules.

Additional ESLint rules.

Make assertions and perform checks for types and literal values

`modern-errors` plugin to execute class-specific logic

Additional ESLint rules.

A collection of utilities dealing with object

Simple library to check for many types.

Function argument validation for humans

Test whether a value has in its prototype chain a specified constructor as a prototype property.

Test if a value is a regular expression.

Determine the name of a value's constructor.

Implement prototypical inheritance by replacing the prototype of one constructor with the prototype of another constructor.

Functions for testing the types of JS values