Mock implementation of the Next.js Router

Generate random mock data from OpenAPI descriptions for msw.

Mock both 2D and WebGL contexts in Jest.

Functions to mock the JavaScript aws-sdk

Mock a REST API just using JSON. An advanced fork of typicode/json-server

Type safe mocking extensions for jest

Caching mock fetch implementation for all runtimes and frameworks.

Redis client mock object for unit testing

Mock a Rest API or any backend service.

A JavaScript library to mock the local timezone.

Mock infrastructure for AI application testing — LLM APIs, image generation, image editing, text-to-speech, transcription, audio translation, audio generation, video generation, embeddings, MCP tools, A2A agents, AG-UI event streams, vector databases, sea

XMLHttpRequest mock for testing

mock data generator from Swagger (OpenAPI 3)

Mock Pusher.js in your JavaScript tests with ease

Provides a mock JSON-RPC API given an OpenRPC Document

Mock HTTP server for testing HTTP clients and stubbing webservices

Type safe mocking extensions for vitest, forked from jest-mock-extended

Easily unit test LaunchDarkly feature flagged components with jest

A node client for the MockServer

Axios mock for Jest