Expect is a crucial component of the Jest testing framework, providing the expect function that developers use to make assertions about their code's behavior. Version 28.1.1 refines the previous stable release, 28.1.0, with targeted dependency updates that contribute to a more robust and reliable testing experience. While the core functionality remains consistent, developers should be aware of subtle improvements under the hood. Specifically, several dependencies within the Jest ecosystem, such as jest-util, jest-message-util, @jest/expect-utils, and jest-matcher-utils have been bumped from version 28.1.0 to 28.1.1. These likely include bug fixes and performance enhancements within those specific utilities, improving overall test execution.
A more significant change lies in the fast-check dev dependency, jumping from version 2.0.0 to 3.0.0. This update could introduce changes to property-based testing capabilities, potentially offering more sophisticated and efficient ways to generate test cases based on property specifications. Developers using fast-check directly within their Jest tests should examine the fast-check release notes for compatibility considerations and new features made available through this upgrade. The update to version 28.1.1 also included bumping @tsd/typescript to version "~4.7.3" from "~4.6.2" that makes the library more aligned to latest typescript language versions. The small increase in *unpackedSize* may be due to these dependency updates. The release date and fileCount should be taken into account if there were issues between download times, size in disk or with corrupted files.
The are not vulnerabilities for the version 28.1.1 of the package expect
