An ESLint plugin providing supplementary rules for use with the @rushstack/eslint-config package

Make a fetch request from a HAR definition

provides native ESM import and globals mocking for unit tests

A Node.js module for mocking OpenAI-compatible API responses (chat, embeddings, images) in a development environment with consistency mechanisms for deterministic testing

Mock fetch requests in Bun.

Jit Browser Tailwindcss

A Jest transformer that enables first-class Vite integration

Serverless plugin for integrating aws gateway syntax into open api specification

TypeScript-first schema declaration and validation library with static type inference

A non-invasive 'when-then' style API for MSW

Frontend DOM testing utilities

This module extends the [Unexpected](https://github.com/unexpectedjs/unexpected) assertion library with integration for the [Sinonjs](http://sinonjs.org/) mocking library.

WebdriverIO service to enable Electron testing

Simple OpenAI compatible Mock API server. Useful for deterministic testing of AI applications.

mock stdout and stderr

API mocking library that runs as a real HTTP server

Wrapper around the Next.js router that allows for mocking and makes it easier to use routes with parameters.

A set of utilities to assist developers of tools that build N-API native add-ons

Convert HAR files to modular JSON fixtures and back. Perfect for snapshotting and mocking API responses in your test suite.

Extendable client for GitHub's REST & GraphQL APIs