Acorn version 4.0.1 represents a minor update to the popular JavaScript parser library, building upon the 4.0.0 release. Both versions share the same core description as an ECMAScript parser and utilize identical development dependencies, including rollup for bundling, unicode-9.0.0 for Unicode support, and rollup-plugin-buble for transpilation. They are both released under the MIT license, offering developers flexibility in its usage, and are hosted within the same GitHub repository under the ternjs organization. The key difference lies in the release date and version number, with 4.0.1 being published on September 8, 2016, just a day after the 4.0.0 release on September 7, 2016.
For developers, this suggests 4.0.1 likely contains bug fixes or minor enhancements implemented shortly after the initial 4.0.0 release. While the changelog isn't available in the provided data, the quick succession of releases indicates the changes are probably not substantial API adjustments. Users of version 4.0.0 should consider upgrading to 4.0.1 to benefit from any addressed issues or small improvements. The package can be easily accessed via npm, using the provided tarball URLs for direct downloads. Choosing between the versions largely depends on the developer's need for the latest fixes versus the risk of introducing potentially unforeseen issues, however small that may be given the nature of the release. Acorn, in both versions, provides a solid foundation for parsing JavaScript code within various tools and applications.
The are not vulnerabilities for the version 4.0.1 of the package acorn