import { BigNumber, BigNumberish } from '@ethersproject/bignumber';
export * from '@ethersproject/bignumber';
export { BigNumber as BN } from '@ethersproject/bignumber';
export type BNLike = BigNumberish | object | null | undefined;
export declare function toBigNumber(val: null | undefined): null | undefined;
export declare function toBigNumber(val: BigNumberish | object): BigNumber;