Babel-runtime provides a self-contained runtime environment for Babel-compiled code, ensuring compatibility across different JavaScript environments. Versions 5.6.6 and 5.6.5, while seemingly close, offer distinct release points for developers relying on Babel for modern JavaScript features. Both versions share a core dependency on core-js, version 0.9.0 or higher, which polyfills missing JavaScript features in older environments. This ensures that features like Promises, Maps, and Sets function correctly even in browsers or Node.js versions that don't natively support them.
The key difference lies in their release dates and potentially included bug fixes or minor improvements. Version 5.6.6 was released on June 24, 2015, at 22:28:32 UTC, approximately 10 hours after version 5.6.5, which was released on the same day at 12:48:35 UTC. While the dependencies field remains the same, this time gap suggests that 5.6.6 may have addressed critical issues discovered shortly after the release of 5.6.5. For developers, this means upgrading to 5.6.6 is likely the more stable choice, benefiting from potentially crucial fixes without introducing major breaking changes, as reflected by the minor version bump. Both versions are licensed under MIT, promoting open usage and integration within various project types, under the authorship of Sebastian McKenzie.
The are not vulnerabilities for the version 5.6.6 of the package babel-runtime