I'm glad JS is adding these methods to Array. It would be nice if iterables had similar methods for working with lazy sequences, similar to Rust, but this isn't

I'm glad JS is adding these methods to Array. It would be nice if iterables had similar methods for working with lazy sequences, similar to Rust, but this isn't practical since "iterable" is a protocol. Array can do it because it's a class. Perhaps JS could also adopt something similar to Rust's traits, such that implementing the protocol would make a set of related methods callable on that object.