Functional Snake Game - Part 2 - eat crash

snake.js

const willEat = r.equals
const willCrash = (cols, rows, state) =>
  r.find(r.equals(nextHead(cols, rows, state)))(state.snake)

const nextHead = (cols, rows, { move, snake }) =>
  point(
    modulo(cols)(r.head(snake).x + move.x),
    modulo(rows)(r.head(snake).y + move.y)
  )