Extend from multiple classes!

JSS plugin that enables mixing in styles.

A extend query-operation actor

Extend native Error to create custom errors

ESLint JavaScript language implementation

As close to cssnext @extend as possible for PostCSS

Extend an object with the properties of another.

JSX support for Acorn Walk

extend and merge objects, deep or shallow

webpack json to js extend copy-webpack-plugin

JS class extension tool for enabling easily extending prototype with multiple objects.

Jest's expect matchers as a Chai plugin

A plugin which adds additional commands to selenium's javascript implementation of the webdriver client side API

jQuery.extend with configurable behaviour for arrays

Extends Tape with new assertions

Better handling for window object in SSR environment

PostCSS plugin to import CSS files

Cypress custom command to wait and verify that file has been downloaded

Support for private methods in acorn

TypeScript definitions for extend