cond.example.ts

const successNoContent = [
  (data: string) => data.length === 0,
  () => 204,
];

const successWithContent = [
  (data: string) => data.length > 0, 
  () => 200
];

const error = [
  (data: string) => data.includes("Error"),
  () => 400
];

const statusCode = _.cond([
  successNoContent,
  successWithContent,
  error
]);