import { BigNumber, BigNumberish } from 'ethers';
export declare const Zero: BigNumber;
export declare const One: BigNumber;
export declare function min(...xs: BigNumberish[]): BigNumber;
export declare function max(...xs: BigNumberish[]): BigNumber;
export declare function normalise(x: BigNumberish): BigNumber;
export declare function bnRange(start: BigNumber, length: BigNumberish): Generator<BigNumber, void, unknown>;