Google is really failing hard in this regard, and I'm fairly sure it's intentional on their part. Searching "Typescript array" has obvious intent from the user, and an obvious "correct" first result. Google returns the documentation page in the 3rd result, but it's a link to a deprecated version of the page. The rest of the above-the-fold links are websites that contain Google ads.

Duck-Duck-Go returns the up-to-date documentation link 2nd, and the MDN result in 3, with W3Schools in 1. Bing returns actual content on the results page, describing exactly what you need to understand a TS Array.

Google have the incentive to push the poor sites, because they earn revenues from doing so. Bing and DDG don't have that incentive, and return much more relevant and useful links. That doesn't feel like a coincidence.