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/** | |
* SomeUtilFile.tsx | |
* | |
* Generic wrapper for creating store reducer and connecting actions | |
*/ | |
export function useAsyncReducer<T>(initial: T, reducer: Reducer<T, ReducerAction<T>>, actions: AsyncActions<T>): [T, ConnectedActions<T>] { | |
let [state, dispatch] = useReducer<T>(reducer, initial) | |
let connectedActions = useMemo(() => connectActionsToDispatch(actions, dispatch), [dispatch, actions]) | |
let stateAndConnectedActions = useMemo(() => [state, connectedActions], [state, connectedActions]) | |
return stateAndConnectedActions | |
} | |
/** | |
* PatientListStore.tsx | |
* | |
* Declare and export store actions | |
*/ | |
export const actions = { | |
fetchPatients: () => PlatformProtected.fetchPatients().then(this.setPatients), | |
setPatients: (patients) => ({ type: ActionTypes.SetPatient, payload: patients }) | |
} | |
/** | |
* ParentAppProtected.tsx | |
* | |
* Create the store in some component and add to provider | |
*/ | |
import { PatientListContext, initial, reducer, actions } from 'PatientListStore' | |
// ... | |
let patientListStore = useAsyncReducer<PatientListData>(initial, patientListReducer, actions) | |
return ( | |
<PatientListContext.Provider value={patientListStore} /> | |
) | |
/** | |
* SomeConsumerComponent.tsx | |
* | |
* Use the hook in a component | |
*/ | |
import { actions, usePatientListStore } from 'PatientListStore' | |
// ... | |
let [state, { fetchPatients }] = usePatientListStore() // actions are already connected | |
fetchPatients() | |
// ... | |
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