Jest/Vitest matcher for asserting valid OpenAPI definitions

All essential TypeScript types in one place

Collection of monad matchers to ease testing with Jest

Batch remove unused @ts-expect-error directive comment lines, especially helpful when using with ts-migrate.

Cross-browser Error parser

Extends chai with assertions that allow for floating point rounding errors

Expect matchers to perform Axe accessibility tests in your Playwright tests.

Render Svelte components in Vitest Browser Mode

Custom matchers for Jest's expect to help test Request/Response instances

Ergonomic, modern and type-safe assertion library

ESLint rules for Jest

A WebAPI Fetch implementation backed by an Axios client

vitest hooks for JSDOM location mock

Mocking library for TypeScript

To compare dom and shadow dom trees. Part of open-wc recommendations

Properties file reader for Node.js

Vitest matcher for image snapshot testing

sinon library extension to stub whole object and interfaces

Strongly typed jest expect

> - **Status:** Experimental. This API is not yet stable. > - **Requires:** [Cache Components](https://nextjs.org/docs) to be enabled.