A parser generator with Bison's API for creating bottom-up parsers from grammar definitions

AndroidX migration tool for React Native projects with multi-worker parallel processing

Module for executing heavy tasks under forked processes in parallel, by providing a Promise based interface, minimum overhead, and bound workers.

Jest plugin for filtering by filename or test name

Generic configuration validation tool that helps with warnings, errors and deprecation messages as well as showing users examples of correct configuration.

Comprehensive TypeScript type definitions for the Jest testing framework ecosystem providing shared types for configuration, test results, transforms, and global utilities.

Collection of utility functions for Jest testing framework

Jest snapshot testing utilities that enable capturing component output, API responses, or any serializable values as snapshots for regression testing and change detection

Module for serializing and deserializing JavaScript objects using Node.js v8 APIs with filesystem utilities

Jest's test runner responsible for orchestrating test execution, managing worker processes, and coordinating parallel test runs

An ESLint runner for Jest that enables running ESLint as part of Jest test suites

Dependency resolver utilities for Jest testing framework that enables resolution of direct dependencies and transitive inverse dependencies of modules

Regular expression utilities for Jest providing cross-platform path escaping functions.

Legacy Jest preset configuration for React Native projects with deprecated component mocking functionality.

Delightful JavaScript testing framework with built-in test runner, assertion library, mocking, and coverage reporting.

Jest preset configuration for Angular projects with TypeScript support and Angular-specific transformations

Helper library for Jest that implements the logic for parsing and matching test path patterns

Comprehensive mock functionality for the Jest testing framework, enabling developers to create, manage, and control mock functions and objects during testing.

Type safe mocking extensions for jest

Jest utility to mock the console