Function reason

reason<T>(
a: Refute<T>,
f?: (failure: Fail) => string,
): (value: unknown) => string | undefined
Combinator returning refute reason or undefined.
Type Parameters
- T
Parameters
- a: Refute<T>
- f: (failure: Fail) => string = reasonWithReceived
  - (failure: Fail): string
    
    Parameters
    
    failure: Fail
    
    Returns string
    failure reason with inspecting received value.
Returns (value: unknown) => string | undefined
- Defined in reason.ts:5