Function makeBoth

packages/cli/src/internal/options.ts:976–985

(
  left: Options.Options<A>,
  right: Options.Options<B>
)

}

const makeBoth = <A, B>(
  left: Options.Options<A>,
  right: Options.Options<B>
): Options.Options<[A, B]> => {
  const op = Object.create(proto)
  op._tag = "Both"
  op.left = left
  op.right = right
  return op
}

const makeFullName = (str: string): [boolean, string] => str.length === 1 ? [true, `-${str}`] : [false, `--${str}`]