[dragonwriter]

it's a readable, maintainable composable functional pattern that unfortunately scales badly in JS because the methods are all eager methods; there are libraries with lazy versions that return generators so that chaining them produces a pipeline that does one loop rather than one per chained operation, though, which most sensible languages do, or at least support, out of the box.

Still, if you know you’ll have a small working set, and you don't what the extra deependency, there's lots of cases where bet readability, composability, and maintainability wins over efficiency.