import { Address, Log, BlockHeader } from '../types';
import { AsyncOrSync } from 'ts-essentials';
export interface EventSubscriber {
    readonly parentName: string;
    readonly name: string;
    isTracking: () => boolean;
    restart(blockNumber: number): void;
    update(logs: Readonly<Log>[], blockHeaders: Readonly<{
        [blockNumber: number]: Readonly<BlockHeader>;
    }>, blockNumberForMissingStateRegen?: number): AsyncOrSync<void>;
    rollback(blockNumber: number): void;
    invalidate(): void;
}
export interface IBlockManager {
    subscribeToLogs(subscriber: EventSubscriber, contractAddress: Address | Address[], afterBlockNumber: number): void;
    getLatestBlockNumber(): number;
    getActiveChainHead(): Readonly<BlockHeader> | undefined;
}