/**
 * ERC-7754 Cross-Chain Mint — ERC-20 Lock on source, Mint on destination
 */
import { ethers } from 'ethers';
export interface CrossTransfer {
    sender: string;
    destChain: bigint;
    token: string;
    grossAmount: bigint;
    netAmount: bigint;
    recipient: string;
    attestationHash: string;
    status: number;
    mintedAt: number;
}
export interface InitiateTransferOptions {
    destChain: number;
    token: string;
    grossAmount: bigint;
    recipient: string;
    ttlSeconds?: number;
}
export declare class MintClient {
    private contract;
    constructor(address: string, signerOrProvider: ethers.Signer | ethers.Provider);
    /** Lock tokens on source chain. Returns transferId. */
    initiate(opts: InitiateTransferOptions): Promise<string>;
    /** Relayer attests the transfer with proof */
    attest(transferId: string, attestationHash: string): Promise<ethers.TransactionReceipt>;
    /** Minter mints wrapped tokens on destination chain */
    mint(transferId: string): Promise<ethers.TransactionReceipt>;
    /** Cancel transfer before attestation */
    cancel(transferId: string): Promise<ethers.TransactionReceipt>;
    getTransfer(transferId: string): Promise<CrossTransfer>;
}
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