`@jest/pattern` is a helper library for the jest library that implements the logic for parsing and matching patterns.

fetch mock for jest

ESLint rules for formatting jest tests

Jest matcher for image comparisons. Most commonly used for visual regression testing.

Jest plugin for filtering by filename or test name

Experimental and currently incomplete module for JSON schemas for [Jest's](https://jestjs.io/) configuration.

This module exports some utils for the `expect` function used in [Jest](https://jestjs.io/).

A lightweight Jest mock for unit testing Express

ESLint rules for Jest

A jest reporter that generates junit xml files

Custom Jest matchers for AWS SDK v3 Client mock

enable babel-jest-assertions support typescript

Mock `window.Date` when run unit test cases with jest. Make tests of `Date` easier.

[type-definitions]: https://github.com/jestjs/jest/blob/main/packages/jest-types/src/Circus.ts

Transform the Import Attributes proposal (`import ... from '...' with { ... }`) to the previous version known as Import Assertions (`import ... from '...' assert { ... }`).

Lazy assertions without performance penalty

Jest test results processor for generating a summary in HTML

Utility to make jest tests fail when console.error() or console.warn() are used

Add custom message to Jest expects

Run your TypeScript type tests using Jest