pub fn build(f: fn(a) -> List(String)) -> Builder(a)

pub fn col_sep(
  builder: Builder(a),
  col_sep: String,
) -> Builder(a)

pub fn headers(
  builder: Builder(a),
  headers: List(String),
) -> Builder(a)

pub fn row_sep(
  builder: Builder(a),
  row_sep: String,
) -> Builder(a)

pub fn string(
  builder: Builder(a),
  rows: yielder.Yielder(a),
) -> String

pub fn yielder(
  builder: Builder(a),
  rows: yielder.Yielder(a),
) -> yielder.Yielder(String)