pub fn batch(cmds: List(Cmd(a))) -> Cmd(a)

pub fn from(cmd: fn(fn(a) -> Nil) -> Nil) -> Cmd(a)

pub fn map(cmd: Cmd(a), f: fn(a) -> b) -> Cmd(b)

pub fn none() -> Cmd(a)

pub fn to_list(cmd: Cmd(a)) -> List(fn(fn(a) -> Nil) -> Nil)