import { Abi } from 'eosjs/dist/eosjs-rpc-interfaces';
import fetch from 'node-fetch';
import { Redis } from 'ioredis';
import { IAbiProvider } from '../types/interfaces';
interface IAbiHistory {
    abi: Abi;
    block_num: number;
}
interface IHyperionAbiProviderParams {
    hyperionEndpoint: string;
    fetchApi: typeof fetch;
    contracts: string[];
    redis: Redis;
}
export declare class HyperionAbiProvider implements IAbiProvider {
    private readonly params;
    private readonly semaphore;
    private savedAbis;
    constructor(params: IHyperionAbiProviderParams);
    getAbi(contract: string, blockNum: number): Promise<Abi>;
    init(): Promise<void>;
    private fetchContractAbiAtBlock;
    fetchContractAbiHistory(contract: string): Promise<IAbiHistory[]>;
    getFromCache(contract: string, blockNum: number): Promise<IAbiHistory | null>;
    setAbi(contract: string, blockNum: number, abi: Abi): Promise<void>;
    private sortAbis;
}
export {};