Mock Service Worker

msw

Industry standard API mocking for JavaScript.

data

Data querying library for testing JavaScript applications.

examples

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

interceptors

Low-level network interception library.

msw-storybook-addon

Mock API requests in Storybook with Mock Service Worker.

playwright

Mock Service Worker binding for Playwright.

source

Generate MSW request handlers from various sources (HAR files, OpenAPI documents, etc).

mswjs.io

Official website and documentation for the Mock Service Worker library.

http-middleware

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

jest-fixed-jsdom

A superset of the JSDOM environment for Jest that respects Node.js globals.

headers-polyfill

A Fetch API "Headers" polyfill and transformation library.

node-match-path

Matches a URL against a path. Parameters, wildcards, RegExp.

cookies

Manage request/response cookies in the environments where those are not supported.

storage

Persistence and live synchronization layer for testing JavaScript applications.

is-node-process

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

socket.io-binding

Binding to mock Socket.IO connections with Mock Service Worker.

codemods

Automate repetitive and painful MSW migrations & breaking changes.

gh-issue-forms

A test repository that is going to disappear.

msw-github-bot

Mock Service Worker community bot. Beep. Bop.

local-storage-polyfill

The "localStorage" polyfill for Node.js.

.github

Mock Service Worker organization GitHub files.

github-webhooks

with-node-fetch

Example of using Mock Service Worker with "node-fetch".