application state

app_state.ts

// Application state is like a database. 
// Currently our 'database' comprises of a single table
// that can be modified by a certain reducer.
// The sub-state's name in IAppState corresponds to
// reducer's name in reducers object.
export interface IAppState {
    customerState: fromSubstates.ICustomerState
};

// and we have only a single reducer here
const reducers = {
  customerState: customerReducer
};