trekhleb/javascript-algorithms is a study repo that implements algorithms and data structures in JavaScript and provides an explanation and further reading for each topic. According to the GitHub repository information, it was created on March 24, 2018 and has 196,682 stars. No latest release information is given. So this is not an article about a new version or new changes, but one that looks at the repository's study material and scope.
The README says the topics are arranged into beginner and advanced levels, and that it covers data structures such as linked lists, trees and graphs, along with math- and set-related algorithms. Each entry links to its own explanatory document and additional reading, and translations in several languages are also provided. The repo's main purpose is to learn programming concepts while reading implementation examples alongside explanations. The language is JavaScript and the license is MIT. With explanations and code organized per topic, it is useful as a place to look up the concepts you want to study.
However, the information provided is not enough to evaluate whether the repo has any automated checks at all, or the scope in which the code applies. There is also no evidence given for comparing the correctness or performance of the implementations. So it is better treated as guidance and examples for learning algorithms and data structures; whether the implementations can be applied directly to a real project has to be checked separately.