The article for Three.js in Wikipedia no longer exists.
The 'talk' on the topic of deleting the page (now closed) may be found here:
From past experience, rather than argue with the deletionists, a better strategy is to write an entry that is too good to delete. Once the Wikipedia deletionists are on your case, you have to write the way Wikipedia wants you to write - and that way is not always obvious, often involves complexities and and is time-consuming.
Nevetheless, it would probably be worth the effort for Three.js to get its Wikipedia page back.