Suggestion: function that split iterable into two at a given position

Split by Index

function splitAt (position, iter) {
  const [first, second] = tee(iter)
  return [
    slice({ end: position }, first),
    slice({ start: position }, second)
  ]
}

Split by Condition

…

[conartist6]

Yeah having had these discussions I like your splitAt proposal better now.

[sithmel]

fork is now on master @KSXGitHub

I like both splitAt and splitBy ideas 😉