Moment.js, a tool for parsing, validating, manipulating, and displaying dates and one of the most popular JavaScript libraries of all time, is now officially called "legacy".
On September 14, the moment.js contributors officially marked the project as "legacy", and noted that there might be better modern alternatives. The moment.js project status page now states:
We now generally consider Moment to be a legacy project in maintenance mode. It is not dead, but it is indeed done.
No new features or capabilities are going to be added to the library from now on, which led some developers to take the announcement as "the end of moment.js".