Mock http requests made using fetch

Custom Jest matchers for AWS SDK v3 Client mock

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

A lightweight Jest mock for unit testing Express

fetch mock for vitest

Intuitive mocking for Typescript class imports

Vite Plugin for API mock dev server.

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🌗 A module used to mock canvas in Vitest.

Caching mock fetch implementation for all runtimes and frameworks.

Mock websockets and assert complex websocket interactions with Jest

Mock smart contracts in a smart way.

Mock implementation of the Next.js Router

Mock for fully testing any media queries with Jest

Never hit the database again while testing

Type safe mocking extensions for jest

Functions to mock the JavaScript aws-sdk

Mock infrastructure for AI application testing — point your SDK at one local port and every provider, protocol, and service answers deterministically.

Mock both 2D and WebGL contexts in Jest.

Redis client mock object for unit testing