Core-js version 3.39.0 represents the latest iteration of this essential JavaScript standard library, building upon the foundation laid by version 3.38.1. Both versions provide comprehensive implementations of ECMAScript standards, polyfilling modern features for older environments and ensuring consistent behavior across browsers. The core functionality remains the same, offering developers a reliable set of tools for modern JavaScript development, focusing on features, stability, and cross-browser compatibility.
A notable difference lies in the "dist" section. Version 3.39.0 sees an increase in fileCount, rising to 3557 from 3498, and unpackedSize, growing to 1256791 from 1240796. This suggests the inclusion of new features, bug fixes (not visible from the metadata) and optimizations, potentially encompassing new proposals, improved performance of existing shims, or refined documentation. Developers upgrading should anticipate possible, though likely minor, changes in bundle size and potentially enhanced performance in specific areas. The releaseDate is also important, as one was released on 2024-10-31 and the other on 2024-08-20, so one is much newer than the other. As usual the upgrades are suggested in order to have the best performance and newest features.
The are not vulnerabilities for the version 3.39.0 of the package core-js