import Web3 from 'web3';
import { NetworkId } from './enums';
/**
 * Set of utils and validators methods
 */
export interface Utils {
    /**
     * Checks if the given web3 instance has accounts to sign txs
     *
     * @param web3 - Web3 instance
     *
     * @returns
     * true if has accounts, false if not
     */
    hasAccounts(web3: Web3): Promise<boolean>;
    /**
     * Checks if the contract in the given address has the given method
     *
     * @param contractAddress - address of the contract to check
     * @param signatureHash - keccak256 of the method signature
     *
     * @returns
     * true if method exists, false if not
     */
    hasMethod(web3: Web3, contractAddress: string, signatureHash: string): Promise<boolean>;
    /**
     * Validates the given label
     *
     * @param label - label to validate
     *
     * @returns
     * true if valid, false if not
     */
    isValidLabel(label: string): boolean;
    /**
     * Validates the given domain syntax
     *
     * @param domain - domain to validate
     *
     * @returns
     * true if valid, false if not
     */
    isValidDomain(domain: string): boolean;
    /**
     * Validates the given domain TLD
     *
     * @param domain - domain to validate
     *
     * @returns
     * true if valid, false if not
     */
    isValidTld(domain: string): boolean;
    /**
     * Validates the given address syntax
     *
     * @param address
     *
     * @returns
     * true if valid, false if not
     */
    isValidAddress(address: string): boolean;
    /**
     * Validates the given checksum address for the given networkId
     *
     * @param address
     * @param networkId - chanetworkIdnId where checksummed address should be valid
     *
     * @returns
     * true if valid, false if not
     */
    isValidChecksumAddress(address: string, networkId?: NetworkId): boolean;
    /**
     * Generates checksum address
     *
     * @param address
     * @param networkId - networkId where checksummed address should be valid
     *
     * @returns
     * Checksummed address
     */
    toChecksumAddress(address: string, networkId?: NetworkId): string;
    /**
     * Returns namehash of the given domain
     *
     * @param domain - domain to apply namehash function
     *
     * @returns
     * namehash of the given domain
     */
    namehash(domain: string): string;
    /**
     * Returns '0x' + keccak256 of the given label
     *
     * @param label - label to apply keccak256 function
     *
     * @returns
     * '0x' + keccak256 of the given label
     */
    labelhash(label: string): string;
}