Fake GraphQL queries with graphql-mocks and Falso
e2e utilities for use with Playwright and Connect
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
Mock Service Worker browser and node integration for Vite
A Jest runner that runs tests directly in bare Node.js, without virtualizing the environment.
Easily mock your webservices while testing frontends.
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Extremely fast file change detector and task orchestrator for Node.js.
Mock of chrome extensions API for unit testing under nodejs
Delightful mocks for JavaScript and TypeScript.
Mock harness simulator for testing agent-mux adapters — simulates claude-code, codex, and other CLI harnesses
> [!WARNING] > ## Automock is Now Suites > > Automock has stopped at **version 2.1.0** and the project has been renamed to **Suites**, a more mature, actively > developed unit testing framework that extends and improves Automock's original design. > > ##
Test setup utilities for React applications
Express middleware for mocking API calls with json & js files during development.
Server version of the popular data-mocks library
Mock utility for the Elasticsearch's Node.js client
Abstract class definitions and type structures for Scriptable-iOS, providing the foundation for building mock implementations and type-safe Scriptable development tools.
Mock using graphql-mocks with Playwright
Library for creating mocks for various tramvai entities
A non-invasive 'when-then' style API for MSW
Quick wrapper that finds TextDecoder in your runtime, or uses an adequate polyfill
Super Simple, Yet Powerful, TypeScript Library for Creating Mocks. Mockingbird allows you to create class mocks like a breeze with a simple yet powerful @Mock decorator
Mock using graphql-mocks with sinon spy
apollo client mocking