mswjs

Industry standard API mocking for JavaScript.

Data modeling and relation library for testing JavaScript applications.

Examples of Mock Service Worker usage with various frameworks and libraries.

Low-level network interception library.

Mock API requests in Storybook with Mock Service Worker.

Spawn an HTTP server from your request handlers or apply them to an existing server using a middleware.

A Fetch API "Headers" polyfill and transformation library.

Reliably determines if the code is running in Node.js. Treats Jest, React Native, Electron, and others like Node.js.

The "localStorage" polyfill for Node.js.