export declare const documents: {
    total: <T extends import("./readonlyInterfaces").TotalRO>(documents: readonly T[]) => number;
    shipping: <T_1 extends import("./readonlyInterfaces").ShippingRO>(documents: readonly T_1[]) => number;
    items: {
        total: <U extends import("./readonlyInterfaces").ItemTotalRO, T_2 extends import("./readonlyInterfaces").ItemsRO<U>>(documents: readonly T_2[]) => U[];
        qty: <U_1 extends import("./readonlyInterfaces").ItemQtyRO, T_3 extends import("./readonlyInterfaces").ItemsRO<U_1>>(documents: readonly T_3[]) => U_1[];
        minus: <I extends import("./readonlyInterfaces").ItemRO & import("./readonlyInterfaces").QtyRO & import("./readonlyInterfaces").TotalRO, S extends import("./readonlyInterfaces").ItemsRO<I>, P extends import("./readonlyInterfaces").ItemRO & import("./readonlyInterfaces").QtyRO & import("./readonlyInterfaces").TotalRO & import("./readonlyInterfaces").PriceRO, T_4 extends import("./readonlyInterfaces").ItemsRO<P>>(from: readonly T_4[], subtrahend: readonly S[]) => P[];
    };
};