pub fn count(queue: Heap(a)) -> Int

pub fn from_list(list: List(a), compare: fn(a, a) -> Order) -> Heap(
  a,
)

pub fn is_empty(queue: Heap(a)) -> Bool

pub fn new(compare: fn(a, a) -> Order) -> Heap(a)

pub fn peek(from queue: Heap(a)) -> Result(a, Nil)

pub fn pop(from queue: Heap(a)) -> Result(#(a, Heap(a)), Nil)

pub fn push(onto queue: Heap(a), this item: a) -> Heap(a)

pub fn reorder(queue: Heap(a), compare: fn(a, a) -> Order) -> Heap(
  a,
)

pub fn to_list(queue: Heap(a)) -> List(a)