Jest-matcher-utils releases peaked in 2017 and 2020 but became less frequent since. There were no releases between October 2023 and May 2025. June 2025 saw a burst of 4 releases, followed by 2 in both July and August, and 1 in the current month of September. The most recent version is 30.1.2.
jest-matcher-utils offers essential utility functions for crafting custom Jest matchers. It provides tools for comparing values, generating informative error messages that highlight differences, and ensuring compatibility across different Jest versions. This package simplifies the process of creating expressive and helpful assertions tailored to specific testing needs, enhancing the overall clarity and maintainability of Jest test suites beyond the built-in matchers. Consistent error messaging and standardized value comparison are key strengths.
Jest-matcher-utils downloads saw significant growth from March 2024 to July 2025, peaking at over 226 million. Downloads stabilized around 144-169 million for much of late 2024 and early 2025, with a notable surge in mid-2025. September 2025's partial data indicates a sharp decrease.
