import { Web3Client } from '../../clients/Web3Client';
import { TEth } from '../../models/TEth';
export declare class TxQueueLoader {
    client: Web3Client;
    cb: (tx: TEth.Tx) => void;
    private opts;
    private status;
    private busy;
    private errors;
    private lastError;
    private queue;
    private seen;
    push(hash: TEth.Hex): void;
    constructor(client: Web3Client, cb: (tx: TEth.Tx) => void);
    stats(): {
        counts: {
            loading: number;
            pending: number;
            processed: number;
            errors: number;
        };
        errors: {
            date: Date;
            hash: TEth.Hex;
            error: Error;
        }[];
        error: string;
        avgLoadTime: number;
    };
    private tick;
    private onSuccess;
    private onCompleted;
    private onError;
}