The docs at https://webpack.js.org/guides/output-management/#the-manifest links to the webpack-manifest-plugin plugin to extract manifest data in a JSON file, that can be used elsewhere.

I tried Webpack 5 on a project of mine and saw an error from this plugin, only to notice the maintainer put a notice on the repo 16 days ago saying the plugin is no longer maintained.

The docs should be updated to either remove the reference to this plugin, or link to a working plugin accomplishing this feature.