import { Instantiable, InstantiableConfig } from '../Instantiable.abstract';
import { Account } from '../nevermined';
import { ethers } from 'ethers';
export declare class ContractHandler extends Instantiable {
    protected static getContract(what: string, networkId: number, address?: string): ethers.Contract;
    protected static setContract(what: string, networkId: number, contractInstance: ethers.Contract, address?: string): void;
    protected static hasContract(what: string, networkId: number, address?: string): boolean;
    private static contracts;
    private static getHash;
    constructor(config: InstantiableConfig);
    get(what: string, optional: boolean, artifactsFolder: string, address?: string): Promise<ethers.Contract>;
    static getABI(contractName: string, artifactsFolder?: string, networkName?: string): Promise<any>;
    getVersion(contractName: string, artifactsFolder: string): Promise<string>;
    deployAbi(artifact: any, from: Account, args?: string[]): Promise<ethers.Contract>;
    private load;
    checkExists(address: string): Promise<boolean>;
    static getSignatureOfMethod(contractInstance: ethers.Contract, methodName: string, args: any[]): string;
    static fetchJson(path: any): Promise<any>;
}