Core-js is a widely used JavaScript standard library offering polyfills for modern ECMAScript features, ensuring cross-browser compatibility for applications targeting diverse environments. Version 3.3.3 arrived shortly after 3.3.2, released on October 21, 2019, following the previous version's release on October 14, 2019. While both versions share the same MIT license, repository details, and number of files (1676), subtle differences exist. Notably, the unpacked size of version 3.3.3 is marginally smaller at 623434 bytes compared to 3.3.2's 623448 bytes. This minor change suggests optimizations or bug fixes within the library, leading to a slightly more compressed footprint. Developers often rely on core-js to seamlessly integrate cutting-edge JavaScript functionalities into their projects without worrying about browser inconsistencies. When upgrading from 3.3.2 to 3.3.3, developers can expect similar core functionalities with potential performance improvements or specific edge-case resolutions. As the difference in unpacked size is the main visible change from the data, it is possibile to expect the upgrade being focused on under-the-hood improvements, encouraging developers to update for the most polished implementation of core-js's polyfills.
The are not vulnerabilities for the version 3.3.3 of the package core-js