Type alias EventReducer<S, E, K>

EventReducer<S, E, K>: ((state, event) => Readonly<Patch<S>>)

Type Parameters

S extends State
E extends Messages
K extends keyof E

Type declaration

- (state, event): Readonly<Patch<S>>
- Event reducers apply events to a reduced state, and returns the new patch
  - state the current reduced state
  - event the event to be applied
  Parameters
  - state: Readonly<S>
  - event: CommittedEvent<Pick<E, K>>
  Returns Readonly<Patch<S>>

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