Hey Mastodon JS engineers, how about you take part in the 2019 State of JS survey? Make sure you enter Mastodon on the "How did you find out about this survey" question, then hopefully next year there will be more of us on here: https://survey.stateofjs.com/
Also: woah, I just found out about Array.prototype.flat!
[1, 2, [3, 4]].flat() === [1, 2, 3, 4]
https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/flat