Ember shim for mock-socket

Isomorphic implementation of WebSocket

Message based Two-way remote procedure call

Mock utility for the Elasticsearch's Node.js client

Javascript mocking library for websockets and socket.io, compatible with apollographql subscriptions-transport-ws

Mock for fully testing any media queries with Jest

The node core libs for in browser usage.

JavaScript client SDK for bidirectional communication with Centrifugo and Centrifuge-based server from browser, NodeJS and React Native

Easy as pie nodemailer mock for unit testing your Node.js applications.

WebSocket client for Sanity's Bifur real-time service, communicating over JSON-RPC 2.0 and returning RxJS Observables

TypeScript definitions for mock-fs

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

mock window.matchMedia for tests or node

Jest hooks for JSDOM location mock

Intercept & mock http requests issued by XMLHttpRequest, fetch, nodejs https/http module, axios, jquery, superagent, ky, node-fetch, request, got or any other request libraries by intercepting XMLHttpRequest, fetch and nodejs native requests in low level.

Mock AWS S3 SDK for Node.js

Mock a canvas in your vitest tests.

Coherent, zero-dependency, lazy, simple, GraphQL over WebSocket Protocol compliant server and client

Mock smart contracts in a smart way.

Mocking library for TypeScript