...the whole Sails thing is currently a hot mess. At least one core contributor has bailed and moved on to Trails.js. Accusations of incompetence, malfeasance, character assassination, etc., abound.
As far as I know (GitHub is down, cannot confirm) Sails is still running Express 3 (the maintainers are supposedly upgrading to 5), has a variety of other major issues with respect to its ORM, Waterline, and is a bit lacking on the "contemporary best practices" front. Long story short, it's broadly (perhaps unfairly, perhaps not) considered dead or dying.
There aren't any viable Rails alternatives for Node. (Flask, Sinatra, on the other hand? — sure. You'll have no trouble finding a good micro-framework.)
ThinkJS, Adonis and Strapi are the only entries I've seen in the Rails/Laravel/Django space, but they all have problems too -- to wit, ThinkJS recommended hashing passwords with MD5 (!!!) on their front page until quite recently, Adonis is aggressively NIH, and Strapi uses Waterline, which is (by many accounts) bad at just about everything.
There's also Nodal, which I've heard good things about, but it's limited to APIs with Postgres.
