From their README


Alfred workflow to search for npm packages with is a great npm package search with deep analysis of package quality using a myriad of metrics. Much better than the official search.


npm install --global alfred-npms

Requires Node.js 14+ and the Alfred Powerpack.


In Alfred, type npm, Enter, and your query, to search for packages.

Select a package and press Enter to go to its GitHub repo.
Hold Alt when pressing Enter to go to its npm page.
Hold Ctrl when pressing Enter to copy the package name to the clipboard.
Press Command to display additional information.
Press Shift to view its readme in Quick Look.

The search is made with boost-exact:false by default. You may pass any operators.