import Transaction from './Transaction';
import { ISigner, ITxJSON } from '../types';
export default class Sponsorship extends Transaction {
    static readonly TYPE = 18;
    recipient: string;
    constructor(recipient: string | ISigner);
    private toBinaryV1;
    private toBinaryV3;
    toBinary(): Uint8Array;
    toJSON(): ITxJSON;
    static from(data: ITxJSON): Sponsorship;
}