import { Hash, Hex, PublicClient, TransactionSerializable } from "viem";
import { BaseTx, TransactionWithSignature } from "../types";
/**
 * Converts a message hash to a payload array
 *
 * @param msgHash - The message hash to convert
 * @returns Array of numbers representing the payload
 * @throws Error if the payload length is not 32 bytes
 */
export declare function toPayload(msgHash: Hex | Uint8Array): number[];
/**
 * Converts a payload array back to a hexadecimal string
 *
 * @param payload - The payload array to convert
 * @returns Hexadecimal string representation
 * @throws Error if the payload length is not 32 bytes
 */
export declare function fromPayload(payload: number[]): Hex;
/**
 * Builds a transaction payload from a serialized transaction
 *
 * @param serializedTx - The serialized transaction
 * @returns Array of numbers representing the transaction payload
 */
export declare function buildTxPayload(serializedTx: `0x${string}`): number[];
/**
 * Populates a transaction with necessary data
 *
 * @param tx - The base transaction data
 * @param from - The sender's address
 * @param client - Optional public client
 * @returns Complete transaction data
 * @throws Error if chain IDs don't match
 */
export declare function populateTx(tx: BaseTx, from: Hex, client?: PublicClient): Promise<TransactionSerializable>;
/**
 * Adds a signature to a transaction
 *
 * @param params - Object containing transaction and signature
 * @returns Serialized signed transaction
 */
export declare function addSignature({ transaction, signature, }: TransactionWithSignature): Hex;
/**
 * Relays a signed transaction to the Ethereum mempool
 *
 * @param serializedTransaction - The signed transaction to relay
 * @param wait - Whether to wait for confirmation
 * @returns Transaction hash
 */
export declare function relaySignedTransaction(serializedTransaction: Hex, wait?: boolean): Promise<Hash>;
/**
 * Broadcasts a signed transaction to the Ethereum mempool
 *
 * @param tx - The signed transaction to broadcast
 * @returns Transaction hash
 */
export declare function broadcastSignedTransaction(tx: TransactionWithSignature): Promise<Hash>;