isNil

isNil<E, A>(state): state is Nil

Defined in: Core/Op.ts:635

Returns true if the state is Nil (the operation completed without a value or error).

Type Parameters

E

E

A

A

Parameters

state

State<E, A>

Returns

state is Nil

Example

manager.subscribe(state => {
  if (Op.isNil(state)) resetUI();
});