Core-js is a JavaScript standard library polyfill, designed to bring modern ECMAScript features to older environments. Comparing versions 0.9.1 and 0.9.2, the key difference lies in the release date, with version 0.9.2 released approximately two hours later than 0.9.1 on the same day, April 25, 2015. While the core devDependencies remain identical, including build tools like Grunt, Webpack, and testing frameworks such as Karma, this suggests the update from 0.9.1 likely incorporates bug fixes, performance enhancements, or minor feature additions rather than a significant overhaul.
For developers adopting core-js, this implies that upgrading from 0.9.1 to 0.9.2 should be a relatively safe and straightforward process. Given the identical dependency structure, existing build configurations and testing setups should remain compatible. The core-js library itself focuses on polyfilling missing JavaScript features, it would be beneficial for developers to investigate the changelog or release notes (if available) accompanying version 0.9.2 to identify the precise changes implemented. This could include fixes for specific edge cases or improvements to the polyfills' efficiency. By incorporating core-js developers ensure cross-browser compatibility and access to cutting-edge language features, irrespective of the target environment.
The are not vulnerabilities for the version 0.9.2 of the package core-js