$optional

Callable

• $optional<T>(literal: T | () => T): OptionalType<T>

---

• Create a new ThereforeNode instance with the given options.

  Example

  $object({
    foo: $optional($string)
  })

  ---

  Type parameters

  • T: Node

  Parameters

  • literal: T | () => T

    The schema to make an optional property.

  Returns OptionalType<T>