Extends one class with methods from another.

extend prototype object

Adds a static `extend` method to a class, to simplify inheritance. Extends the static properties, prototype properties, and descriptors from a `Parent` constructor onto `Child` constructors.

Extend (prototype) the String object with new features like trim, camelCase, shorten, etc.

Extend (prototype) the String object with new features like trim, camelCase, shorten, etc.

string and number extend prototype

Tree utilities which provides a full-featured extend and object-cloning facility, and various tools to deal with nested object structures.

Extend (prototype) the Array object with new features.

Simple event emitter

Event emitter

Port of jQuery.extend for node.js and the browser

Extend an object with the properties of additional objects. node.js/javascript util.

Extend classes from outside in using Macros and getters

A library to make errors.

A utility for managing a prototype chain

Source code handling classes for webpack

Backbone like Class.extend utility for Node

Base draggable class

JSON parse with prototype poisoning protection

Return the prototype of a provided object.