import { BigNumber } from 'ethers';
import { TypedDataDomain, TypedDataField } from '@ethersproject/abstract-signer';
import { Errored, FnGetExpectedPlanSync, ICreatePlanParams, IItem, IItemWithPrice, IPricerStep1, ISdkPricerStep1 } from './types';
export declare const createHashSHA256: (message: string) => Promise<string>;
export declare const calculateTotals: (items: {
    price: BigNumber;
    interestRate: number;
}[]) => {
    totalPrice: BigNumber;
    totalInterestRate: number;
};
export declare const getExpectedPlanSync: (plan: FnGetExpectedPlanSync['params']) => FnGetExpectedPlanSync['result'];
export declare const typedDataDomain: TypedDataDomain;
export declare const typedDataTypes: Record<string, TypedDataField[]>;
export declare const generateNonce: (paymentPlans: ICreatePlanParams[]) => Promise<string>;
export declare const generateBnplOptions: (result: IPricerStep1['response'], items: Array<IItem | IItemWithPrice>) => ISdkPricerStep1['result']['items'];
export declare const generatePawnOptions: (result: IPricerStep1['response'], items: Array<IItem | IItemWithPrice>) => ISdkPricerStep1['result']['items'];
export declare const getPaymentPlanError: (error: any) => string;
export declare const isNonErrored: <T>(item: Errored<T>) => item is T;