Version Details and Security Vulnerabilities

Jest-diff version 30.1.2 presents a minor update over its predecessor, version 30.1.1, primarily affecting the developer experience and potentially internal tooling. Both versions maintain consistent dependencies on core packages like chalk for terminal styling and pretty-format for enhanced data structure representation, essential tools for creating readable and informative diff outputs in Jest tests. Furthermore, both rely on @jest/get-type for accurate type determination and @jest/diff-sequences for efficient sequence comparison, core components of Jest's diffing capabilities.

The key change lies in the devDependencies. Version 30.1.2 upgrades @jest/test-utils from version 30.1.1 to 30.1.2. While this suggests minimal changes to the core diffing algorithm or public API, such update in devDependencies often indicates improvements or bug fixes in the testing infrastructure used internally for Jest-diff's development. Developers depending on Jest-diff directly are unlikely to see immediate changes or compatibility issues given the scope of the change. Both versions share the same unpacked size and file count, hinting that the changes are refinements within existing modules rather than additions of new functionalities. The release date indicates an update in September 2025 from a previous release in late august, which suggests bug fixes or minor features added into the library after the release of jest-diff 30.1.1. Thus it might be a good idea to upgrade.