I won't win this argument, and ymmv. :) But personally, every identifier being a 'const' instead of a 'let' helps me reason about it much better, especially wh

I won't win this argument, and ymmv. :) But personally, every identifier being a 'const' instead of a 'let' helps me reason about it much better, especially when the code is purely algorithmic. An alternative might be to use something like Facebook's Reason, where such code can be concise and idiomatic.