Node.prototype.contains() Polyfill

The `node-contains` package, currently at version 1.0.0 and last published in September 2014, was designed to provide a cross-browser polyfill for the `Node.prototype.contains()` DOM method. Its original purpose was to ensure consistent behavior across older web browsers that lacked native support for this functionality. However, this method has been natively supported by all major web browsers since July 2015. Consequently, this package is now largely obsolete and considered abandoned for modern web development. While it might still be encountered in projects targeting extremely legacy environments, for any contemporary application, including `node-contains` introduces unnecessary overhead and potential compatibility issues. It does not follow a regular release cadence and offers no unique differentiators over native browser implementations.