import { EoAccount } from "../models/TAccount";
import { Web3Client } from '../clients/Web3Client';
import { IToken } from '../models/IToken';
import { TAddress } from '../models/TAddress';
import { TxWriter } from '../txs/TxWriter';
export declare class TokenService {
    client: Web3Client;
    private tokensProvider;
    constructor(client: Web3Client);
    balanceOf(address: TAddress, token: string | IToken, params?: {
        forBlock?: number | bigint | Date;
    }): Promise<bigint>;
    hasToken(address: TAddress, token: string | IToken, amount: number): Promise<boolean>;
    ensureApproved(account: EoAccount, tokenMix: string | IToken, spender: TAddress, amount: bigint | number): Promise<TxWriter | null>;
    /**
     * @param amount Can be negative (wraps all with rest)
     */
    wrapNativeToERC20(account: EoAccount, amount: number): Promise<TxWriter>;
    /**
     *
     */
    unwrapNative(account: EoAccount, amount?: number | bigint): Promise<TxWriter>;
    protected getToken(mix: string | IToken): Promise<IToken>;
    protected getBlock(block: undefined | number | bigint | Date): Promise<number | bigint>;
}