Mock `window.Date` when run unit test cases with jest. Make tests of `Date` easier.

A configurable mock file system. You know, for testing.

Utility for mocking XMLHttpRequest.

Super simple stubs and spies with 1-step sandbox restore

Lightweight Jest compatible spy implementation

A simple mock for requestAnimationFrame testing with fake timers.

Mock for fully testing any media queries with Jest

🌗 A module used to mock canvas in Vitest.

Mock websockets and assert complex websocket interactions with Jest

common interface for abstracting a console ui

The node core libs for in browser usage.

TypeScript definitions for mock-fs

Custom matchers for AWS SDK Client mock to be used in vitest

an identity object using ES6 proxies

Jest hooks for JSDOM location mock

Mock implementation of the Next.js Router

Functions to mock the JavaScript aws-sdk

Caching mock fetch implementation for all runtimes and frameworks.

A simple mock interface specifically for testing code relying on Sequelize models

Fully unit tested mock implementation of the browser Event API.