import { BlockhashWithExpiryBlockHeight } from "@solana/web3.js";
import type { ChainAPI } from "../network";
type BroadcastOptions = {
    recentBlockhash?: BlockhashWithExpiryBlockHeight;
};
/**
 *
 * @param api - The Solana API client
 * @param tx - The transaction to broadcast in base64 format
 * @param options - The broadcast options
 * @returns The transaction hash
 */
export declare function broadcast(api: ChainAPI, tx: string, options?: BroadcastOptions): Promise<string>;
export {};
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