A better WebSocket that Just Works™

**Note:** More details on user side API can be found in [Jest documentation](https://jestjs.io/docs/mock-function-api).

Lightweight Jest compatible spy implementation

This library emulates ioredis by performing all operations in-memory.

fetch mock for vitest

A lightweight Jest mock for unit testing Express

Mock http requests made using fetch

Custom Jest matchers for AWS SDK v3 Client mock

Given an object and a property, replaces a property descriptor (or deletes it), and returns a thunk to restore it.

Mock websocket servers using json

Isomorphic implementation of WebSocket

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

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

Websocket Client & Server Library implementing the WebSocket protocol as specified in RFC 6455.

🌗 A module used to mock canvas in Vitest.

basic websocket support for fastify

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Simple, EventEmitter API for WebSockets (browser)

Use websockets with the node streams API. Works in browser and node, with all current WS versions

Mock implementation of the Next.js Router