import { BigNumber, Contract, ContractTransaction } from 'ethers';
export declare type NAry<N> = N | N[];
export declare type PermissionAssertion = {
    name: string;
    roles: string[];
    account: NAry<{
        address: string;
    } | string>;
};
export declare function assertPermissions(target: Contract, assertions: PermissionAssertion[]): Promise<void>;
export declare function assertRelayedBaseCost(tx: ContractTransaction, redeemedCost: BigNumber, tolerance?: number): Promise<void>;