Drag and drop sans the GUI

Storybook addon that mocks the JavaScript Date — and opt-in Temporal and Intl.DateTimeFormat — for individual stories.

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

Workers Vitest integration for writing Vitest unit and integration tests that run inside the Workers runtime

Low-level HTTP/HTTPS/XHR request interception library for NodeJS

Type safe mocking library for TypeScript

Test, mock, intercept and modify Apollo Client's operations — in both browser and unit tests!

Utility for mocking XMLHttpRequests in the browser or nodejs.

Tooling for testing Inngest functions.

A Vite plugin for mocking API responses with TypeScript support

Recursive, synchronous, and fast file system walker

Mocking framework

Simple, intuitive mocking of Node.js modules.

Efficient server proxying and mocking in Node.js.

A fully type safe mocking, call verification and import replacement library for jasmine and jest

An NSubstitute port to TypeScript called substitute.js.

A Transactional Method Decorator for typeorm that uses cls-hooked to handle and propagate transactions between different repositories and service methods. Inpired by Spring Trasnactional Annotation and Sequelize CLS

Tools for setting up graphql test resolvers

Mocking api server in vite.

a knex mock adapter for simulating a db during testing