import { Signer } from 'ethers';
import { ValueError, ValueErrorParams } from '../errors/Errors';
import { Provider } from 'ethers/providers';
/**
 * Thrown when an invalid address is given
 */
export declare class InvalidAddressError extends Error implements ValueError {
    readonly value: any;
    constructor({ message, value }?: ValueErrorParams);
}
/**
 * Check if a string is a valid address (and return it checksummed).
 * @param address
 * @throws InvalidAddressError
 */
export declare function normalizeAddress(address: string): string;
/**
 * Resolve a string with the Ethereum Naming Service.
 *
 * It will use the default Provider set for the SDK, or the optional provider in parameters.
 * @param ens
 * @param [provider] Override the default SDK provider.
 * @throws InvalidAddressError If the string could not be resolved to an address.
 * @throws InvalidProviderError If the provider is not a valid provider.
 */
export declare function resolveENS(ens: string, provider?: Provider | Signer): Promise<string>;