Core-js version 2.5.4 introduces several updates to its development dependencies, reflecting an ongoing effort to modernize and refine the library's build and testing processes. Key changes include upgrades to eslint (from 4.13.x to 4.19.x), webpack (from ^3.10.0 to ^3.11.0), grunt (from 1.0.1 to ^1.0.2), qunit (from 2.4.x to 2.6.x), grunt-contrib-uglify (3.2.x to 3.3.x), eslint-plugin-import (2.8.x to 2.9.x). Also, the version karma was bumped up major version from 1.7.1 to ^2.0.0 and karma-qunit was updated from 1.2.x to ^2.0.1.
These updates likely bring improvements in code linting, module bundling efficiency, and testing accuracy, directly benefiting developers using core-js. By staying current with these tools, core-js ensures a more robust and maintainable codebase. For developers integrating core-js into their projects, these changes translate to a more reliable polyfilling experience, improved compatibility with modern JavaScript features, and potentially smoother development workflows due to the enhanced tooling. The increased file count and unpacked size in version 2.5.4 suggest possible additions or modifications to the polyfills included, potentially broadening the scope of supported JavaScript features.
The are not vulnerabilities for the version 2.5.4 of the package core-js