Websites using promise-polyfill

Questions about finding promise-polyfill

How does PageSourceSearch know a website uses promise-polyfill?

By the source itself: The page loads the polyfill by its package name, promise-polyfill. PageSourceSearch stores the raw HTML and first-party JavaScript of each crawled site and matches the keyword byte for byte, so every listed site's stored source contains it.

Is this a complete list of websites using promise-polyfill?

No. The page lists the 50 highest-ranked sites in the index whose source holds the keyword, out of about 697,366 websites that do; the count is the index's estimate at the time the list was computed. Run the keyword as a search to page through all of them, or add a kind or date filter.

How do I find websites that use promise-polyfill together with another technology?

Search for both keywords at once: several terms separated by spaces must all be found on the same site, or with the Same page toggle in the same page. For example promise-polyfill with wp-content/plugins/ lists the WordPress sites that use promise-polyfill.