Type Alias StartStopNotifier<T>

StartStopNotifier<T>: ((set: ((value: T) => void), update: ((fn: Updater<T>) => void)) => void | (() => void))

Start and stop notification callbacks. This function is called when the first subscriber subscribes.

Type Parameters

T

Type declaration

- (set, update): void | (() => void)
- Parameters
  - set: ((value: T) => void)
    Function that sets the value of the store.
    - (value): void
      Parameters
      value: T
      Returns void
  - update: ((fn: Updater<T>) => void)
    Function that sets the value of the store after passing the current value to the update function.
    - (fn): void
      Parameters
      fn: Updater<T>
      Returns void
  Returns void | (() => void)
  Optionally, a cleanup function that is called when the last remaining subscriber unsubscribes.