npm-install-webpack-plugin

Webpack plugin that automatically installs and saves missing npm dependencies during development. Version 2.0.4 is deprecated; the package was last updated in 2017 and is no longer actively maintained. It works with JavaScript (require/import), CSS @import, and Webpack loaders, but has known issues with newer Webpack versions and Node.js releases. Alternatives include webpack-auto-inject-version or manual dependency management.