jest-config is the configuration system for Jest, a delightful JavaScript Testing Framework with a focus on simplicity. This package handles the parsing, validation, and merging of Jest configuration options from various sources like command-line arguments, environment variables, and configuration files (e.g., jest.config.js). It provides a standardized structure and tooling for managing Jest's behavior, ensuring consistency across projects and environments. By using jest-config, developers can easily customize Jest's settings to suit their specific testing needs.
Jest-config releases were frequent from 2016 to 2022, with peaks in 2016-2018 and 2020-2021. Release frequency declined significantly from 2023 to 2024. In 2025, from June to August, the package saw a small resurgence with a few releases, reaching versions 30.1.0 and 30.1.1 in August 2025.
Jest-config npm package downloads show a generally upward trend from March 2024 to August 2025. Downloads peaked in June/July 2025, exceeding 164 million. August 2025 downloads are lower, but the month is incomplete. The package consistently maintains high download numbers, indicating continued usage.