_template.jsx

            const itemsById = itemsWithFields.reduce(
                (accum, item) => {
                    const itemId = item.sys.id;
                    accum[itemId] = item;

                    return accum;
                }, []
            );

            console.log(itemsById);

            return {
                ...state,
                devices: itemsById,
                isFetching: false,
                contentful: action.contentful,
                lastUpdated: action.receivedAt
            }