import type { Commitment, Rpc, RpcSubscriptions, SolanaRpcApi, SolanaRpcSubscriptionsApi } from '@solana/kit';
import type { TpuClient, SendResult } from './tpu-client.js';
/** Dependencies injected into {@link sendAndConfirmTpuTransactionFactory}. */
export interface TpuConfirmFactoryCfg {
    /** The TPU client used to send the transaction. */
    tpu: TpuClient;
    /** JSON-RPC client for block-height polling. */
    rpc: Rpc<SolanaRpcApi>;
    /** WebSocket subscriptions client for signature-status streaming. */
    rpcSubscriptions: RpcSubscriptions<SolanaRpcSubscriptionsApi>;
}
/** Per-call options for the function returned by {@link sendAndConfirmTpuTransactionFactory}. */
export interface TpuConfirmOptions {
    /** Desired confirmation level (e.g. `'confirmed'` or `'finalized'`). */
    commitment: Commitment;
    /** Optional abort signal to cancel both the send and the confirmation wait. */
    abortSignal?: AbortSignal;
    /** Block height after which the blockhash is considered expired; obtained from `getLatestBlockhash`. */
    lastValidBlockHeight: bigint;
}
/** Extends {@link SendResult} with the commitment level used during confirmation. */
export interface TpuConfirmResult extends SendResult {
    /** Commitment level at which confirmation was obtained. */
    commitment: Commitment;
}
/**
 * Creates a `sendAndConfirmTpuTransaction` function that sends a raw
 * transaction via the TPU fast-path and then waits for on-chain confirmation
 * using kit's block-height + signature-status racing strategy.
 *
 * Throws when:
 *   - the blockhash's last-valid block height is exceeded
 *   - the caller's `abortSignal` fires
 *   - the transaction fails on-chain
 */
export declare function sendAndConfirmTpuTransactionFactory(cfg: TpuConfirmFactoryCfg): (tx: Uint8Array, opts: TpuConfirmOptions) => Promise<TpuConfirmResult>;
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