Version Details and Security Vulnerabilities

Jest version 27.0.2, released on May 29, 2021, builds upon the foundation of its predecessor, version 27.0.1, released just a few days earlier on May 25, 2021. Both versions share the same core description: "Delightful JavaScript Testing," and maintain similar dependencies. At the heart of both are jest-cli and @jest/core, essential components for running and orchestrating Jest tests, also maintaining the import-local dependency that prioritizes local installations, ensuring the test environment aligns with the project's specific dependencies. The peer dependency on node-notifier remains the same, signaling continued support for desktop notifications, a feature useful for providing real-time feedback on test results. The license remains MIT, and the repository information points to the official Jest GitHub repository, ensuring both versions benefit from the project's robust development and community support. The dist section provides the link to download the package and also shows the fileCount and unpackedSize are same across both versions.

The most significant difference lies in the bumped version numbers of jest-cli and @jest/core within the dependencies. Version 27.0.2 depends on jest-cli@^27.0.2 and @jest/core@^27.0.2, while version 27.0.1 correspondingly depends on jest-cli@^27.0.1 and @jest/core@^27.0.1. The subtle version bump indicates internal improvements or bug fixes within these core components. For developers, upgrading from 27.0.1 to 27.0.2 is likely to provide a more polished and reliable testing experience, potentially resolving edge-case issues or enhancing performance without introducing major breaking changes, although consulting the specific changelogs for jest-cli and @jest/core is recommended.