Firebase mock library for writing unit tests

🌗 A module used to mock canvas in Vitest.

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Get the auth token set for an npm registry (if any)

Mock websockets and assert complex websocket interactions with Jest

Mock implementation of the Next.js Router

Basic auth parser

Official SDK for Supabase Auth

Functions to mock the JavaScript aws-sdk

Type safe mocking extensions for jest

Caching mock fetch implementation for all runtimes and frameworks.

A JavaScript library to mock the local timezone.

The most comprehensive authentication framework for TypeScript.

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

Mongo adapter for Better Auth

Mock HTTP server for testing HTTP clients and stubbing webservices

A storybook addon to mock fetch/XHR request

Mock Pusher.js in your JavaScript tests with ease

XMLHttpRequest mock for testing

Simple, intuitive mocking of Node.js modules.