import { DataItemValueInterface, DataItemInterface } from "../..";
import { StateInterface } from "./types";
export declare function useItems(state: StateInterface): Record<string, DataItemInterface>;
export declare function useData(state: StateInterface): [boolean, Record<string, DataItemValueInterface[]>];
export declare function aggregate(aggregation: "mean" | "sum" | "min" | "max" | "count", values: number[]): number;
export declare function round(value: number, decimals: number): number;