import { ItemRO } from './readonlyInterfaces';
export declare const itemsReduce: <U>(id: string, init: U) => <T extends ItemRO>(items: readonly T[], reducer: (acc: U, item: T) => U) => U;
export declare const addPrices: (...prices: number[]) => number;
export declare const minusPrice: (a: number, b: number) => number;
export declare const itemPrice: <T extends import("./readonlyInterfaces").QtyRO & import("./readonlyInterfaces").PriceRO>({ price, qty }: T) => number;
export declare const enrichItem: <T extends import("./readonlyInterfaces").QtyRO & import("./readonlyInterfaces").PriceRO & {
    total?: number | undefined;
}>(item: T) => T & {
    total: number;
};
export declare const itemDiscount: <T extends import("./readonlyInterfaces").TotalRO & import("./readonlyInterfaces").QtyRO & import("./readonlyInterfaces").PriceRO>({ total, ...item }: T) => number;
export declare const divideTotal: <T extends import("./readonlyInterfaces").TotalRO & import("./readonlyInterfaces").QtyRO>(item: T) => T[];
export declare const itemsGroupReduce: <U, T extends ItemRO>(init: (item: T) => U) => (items: readonly T[], reducer: (acc: U, item: T) => U) => U[];
export declare const takeItem: (cheapest: boolean) => <T extends import("./readonlyInterfaces").QtyRO & import("./readonlyInterfaces").TotalRO, U extends import("./readonlyInterfaces").QtyRO>(from: readonly T[], item: U) => (U & T)[];
export declare const takeItems: (cheapest: boolean) => <T extends ItemRO & import("./readonlyInterfaces").QtyRO & import("./readonlyInterfaces").TotalRO, U extends import("./readonlyInterfaces").ItemQtyRO>(from: readonly T[], items: readonly U[]) => (U & T)[];
export declare const spreadAdjustment: <T extends import("./readonlyInterfaces").TotalRO & import("./readonlyInterfaces").QtyRO & import("./readonlyInterfaces").PriceRO>(amount: number, items: readonly T[]) => {
    amount: number;
    items: readonly T[];
    next: () => readonly T[];
};
export declare const minusItem: <T extends import("./readonlyInterfaces").QtyRO & import("./readonlyInterfaces").TotalRO & import("./readonlyInterfaces").PriceRO, U extends import("./readonlyInterfaces").QtyRO & import("./readonlyInterfaces").TotalRO>(item: U) => (from: readonly T[]) => T[];