/**
 * TRON Chain Adapter
 *
 * Builds TRON transactions using Protobuf serialization (NOT EVM RLP),
 * attaches secp256k1 ECDSA signatures from the FROST threshold signing
 * network, and broadcasts via TRON full node HTTP API.
 *
 * Requires: npm install tronweb
 */
import { ChainAdapter, TronTransaction } from '../core/types';
export declare class TronAdapter implements ChainAdapter {
    private rpcUrl;
    private network;
    private tronWeb;
    constructor(network?: 'mainnet' | 'shasta' | 'nile', rpcUrl?: string);
    getRpcUrl(): string;
    /**
     * Build an unsigned TRON transaction.
     *
     * TRON uses Protobuf for TX serialization. The signing payload
     * is SHA-256 of the raw transaction data (returned as txID by TronWeb).
     */
    buildTransaction(tx: TronTransaction, fromAddress: string): Promise<string>;
    getSigningPayload(unsignedTx: string): string;
    /**
     * Attach a secp256k1 ECDSA signature to the TRON transaction.
     * TRON expects 65-byte signatures (r + s + v), same format as EVM.
     */
    attachSignature(unsignedTx: string, signature: string): Promise<string>;
    /**
     * Broadcast a signed TRON transaction
     */
    broadcast(signedTx: string): Promise<string>;
    /**
     * Get TRX balance in SUN
     */
    getBalance(address: string): Promise<string>;
}
export declare function createTronAdapter(rpcUrl?: string): TronAdapter;
export declare function createTronShastaAdapter(rpcUrl?: string): TronAdapter;
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