redux-observable-epic-biolerplate-with-concat

redux-observable-epic-with-concat.js

export const settlementEpic = {
    fetchDocumentList: (action$) => {
        return action$.ofType(settlementAction.fetchDocumentList.getType())
            .map(action => action.payload)
            .switchMap(payload => {
                const userId = window.localStorage.getItem('userid');
                let path = `/api/v1/documents?ownerId=${userId}`;
                if (payload && payload.query && payload.query.settlementBuyer) {
                    path = path.concat(`&buyer=${payload.query.settlementBuyer}`);
                }
                return ajax$.getJSON(path).map(json =>
                    settlementAction.receiveDocumentList(json.documents)
                );
            })
            .switchMap(prevAction =>
                concat$(
                    of$(prevAction),
                    of$(push('/settlement/documents')),
                    of$(settlementAction.createSettlement({ created: true }))
                )
            );
    }
}