isFailure

Callable

• isFailure(x: unknown): x is Error

---

• Checks if x is a Failure.

  Example

  isFailure("foobar")
  // => false
  
  isFailure(new Error())
  // => true

  ---

  Parameters

  • x: unknown

    The value to check.

  Returns x is Error

  true if x is a Failure, false otherwise.